1015.1 Scope. This specification covers bituminous material to be used in highway construction. 1015.2 Approval of Source. The contractor shall obtain approval of the source of bituminous material from the engineer before any shipments to the work site are made. 1015.3 Sampling, Testing and Acceptance Procedures .The supplier shall certify that the bituminous material complies with the specification requirements. 1015.3.1 Certification. The supplier shall furnish the truck driver a copy of the bill of lading, manifest or truck ticket to be available to MoDOT at the destination prior to unloading. The engineer at the source shall be furnished a copy. The bill of lading, manifest or truck ticket shall provide the following information regarding the shipment: type and grade of material, chemical additives, such as polyphosphoric acid (PPA), used in modification or for cross-linking, specific gravity at 60 F, net gallons, consignee, truck number, identification number, weight of truck before and after loading, destination, date loaded, name and location of the source, and a certification statement. The certification statement shall be signed by an authorized representative of the supplier and shall be substantially as follows: "This certifies that the bituminous material in this shipment is in accordance with MoDOT specifications for the grade specified and the weights (masses) shown hereon were obtained on MoDOT approved scales and are correct within the specified scale requirements." 1015.3.2 Sampling. The engineer will at random observe the sampling and testing of truck shipments and tanks, and will select representative samples of the material being supplied for testing in the field or in the Central Laboratory. When test results certified by the supplier are not representative of the material being shipped, the source approval will be withdrawn. A source may be reinstated when proof is furnished that the deficiency has been corrected and adequate controls are in effect to guarantee delivery of material meeting specifications. Sampling and test methods for asphalt shall be as follows: Property Method RCMCPG Sampling AASHTO T 40 X X X Water AASHTO T 55 X X X Flash Point (Tag Open Cup) AASHTO T 79 X X Flash Point (Cleveland Open Cup) AASHTO T 48 X Viscosity, Centistokes AASHTO T 201 X X Distillation AASHTO T 78 X X Penetration AASHTO T 49 X X Ductility AASHTO T 51 X X Solubility in Trichlorethylene AASHTO T 44 X X X Ash in Bituminous Material AASHTO T 111 Viscosity (Rotational) ASTM D 4402 X Dynamic Shear AASHTO T 315 X Rolling Thin Film Oven Test AASHTO T 240 X Pressure Aging Test AASHTO R28 X Creep Stiffness AASHTO T 313 X Direct Tension AASHTO T 314 1015.3.3 Sampling Equipment. The supplier shall furnish the required sampling equipment and shall sample the contents of the truck under the direction of the engineer. The supplier shall keep all sampling equipment clean and in good condition. Sampling devices on truck transports will be approved provided an adequately insulated valve is used with a pipe or nipple inserted a suitable distance into the tank. 1015.3.4 Truck Log. Each truck transport shall carry a log showing types of material and the dates hauled with respect to previous shipments, or the supplier shall furnish to the engineer such information with respect to the previous load. 1015.3.5 Intermediate Storage. Intermediate storage tanks for storage and transfer of material between the refinery or terminal and the point of acceptance shall be equipped for sealing and shall be reserved exclusively for MoDOT work. Use of any material from unsealed tanks will be subject to delay until material can be sampled, tested and approved. 1015.3.6 Other Transportation. At sources from which liquid bituminous material is being accepted by certification, the applicable requirements of the foregoing sections shall be followed for shipments of material in transportation units other than trucks. The certification and all information regarding each shipment shall be furnished to the engineer at the source. 1015.3.7 Railroad Shipments. For railroad shipments from refineries where inspection is not maintained by MoDOT, the supplier shall sample each car load at the source and submit the sample promptly to the Central Laboratory. A bill of lading or identification sheet shall accompany each sample and contain the following information: car number, type and grade of material, chemical additives, such as PPA, used in modification or for cross-linking, quantity represented, including gross gallons, temperature and net gallons at 60 F, destination of shipment, project number and consignee. A certification statement as specified in Sec 1015.3.1 shall accompany each sample. Approval of the source may be withdrawn if samples submitted are not representative of the material shipped in the car. 1015.4 Proportioning and Blending Bituminous Material Constituents. All material shall be properly proportioned and thoroughly blended in suitable tanks prior to delivery to transportation equipment, or material may be proportioned and blended by use of automatic proportioning equipment. All automatic-proportioning blenders shall meet the approval of the engineer and shall be equipped with precision instruments, including electrically interlocked motors and automatic meters. 1015.5 Application Temperatures for Bituminous Material. Bituminous Material Temperature, Degrees Fahrenheit Spraying Mixing Min Max Min Max Asphalt Binder PG 46-28 260 325 ---- ---- All Other Grades 285 350 275 350 Liquid Asphalt RC-MC Grade 30 70 150 50 110 70 100 180 90 140 250 150 220 130 170 800 180 260 170 210 3000 210 290 200 240 Asphalt Emulsions RS-1 120 140 ---- ---- RS-2 125 185 ---- ---- SS-1 120 160 70 160 SS-1h 120 160 70 160 SS-1vh 160 180 140 160 CRS-1 125 185 ---- ---- CRS-2 125 185 ---- ---- CSS-1 120 160 70 160 CSS-1h 120 160 70 160 EA-90P 130 180 ---- ---- CRS-2P 130 180 ---- ---- CHFRS-2P 130 180 ---- ---- a The minimum mixing temperature shall be lowered to 200 when a warm mix technology, as approved by the engineer, is used. 1015.5.1 Application temperatures of other grades of emulsions shall be as specified in the contract. 1015.5.2 The spraying temperature for non-modified PG 46-28 asphalt binder shall be 260 - 325 F, and for all other higher temperature non-modified performance grades, the spraying temperature shall be 285 - 350 F. The mixing and compaction temperatures for performance graded asphalt binder shall be determined by rotational viscosity testing as defined in ASTM D 4402. 1015.5.3 When material to be applied by pressure distributor is, due to refining or blending procedures, delivered at a temperature above the specified limits, the material may be applied at the higher temperature provided satisfactory application can be obtained at the specified rate and provided sufficient precaution is exercised with respect to the fire hazard. 1015.6 Measurement of Bituminous Material. Field weight or field volumetric determinations of the material actually incorporated into the work will be used for measurement of the quantity of bituminous material for payment. The volume of material supplied from intermediate storage tanks will be determined from the net weight of the material. The net weight will be determined from the gross weight of the loaded transport vehicle used to deliver the material to the project less the empty transport vehicle weight. The volume correction methods specified below will be used for determining the volume of bituminous material. Scales for determining the weight of bituminous material shall be in accordance with Sec 310. 1015.6.1 Liquid Bituminous Material and Asphalt Binder - Volumetric Determination. Measurement of the material will be based on the volume at 60 F. The volume correction factors of ASTM D 4311, Table 2, will be used for converting the material from the volume at the observed temperature to the volume at 60 F. The volume of uncalibrated distributors and tank trucks will be determined from the net weight of the material. The net weight will be determined from the gross weight of the loaded delivery vehicle less the empty delivery vehicle weight. For computing the volume in gallons from weight, the following formula will be used: G = W SG x 8.328 where: G = Volume in gallons at 60 F. W = Weight of material in pounds. SG = Specific Gravity of material at 60 F. 1015.6.2 Emulsified Asphalt. Measurement of the material will be based on the volume at 60 F using a coefficient of expansion of 0.0003 per degree F for converting the material from the volume at the observed temperature to the volume at 60 F. SECTION 1015.10 PERFORMANCE GRADED ASPHALT BINDER.
1015.10.1 General. Performance graded asphalt binder shall be an asphalt-based binder produced from
petroleum residue either with or without the addition of non-particulate organic modifiers, except Re-refined Engine Oil Bottoms (REOB) and Vacuum Tower Asphalt Extenders (VTAE) shall not be used as modifiers. Polyphosphoric Acid (PPA) may be used at a maximum dosage of 0.25 percent by weight of binder to promote polymer cross-linking and interaction. Higher PPA dosages or other types of modifiers used for cross-linking shall be approved by the engineer. The asphalt binder grade shall be as specified in the contract.
1015.10.2 Basis of Acceptance. Suppliers furnishing performance graded asphalt binders to MoDOT projects
by certification shall be in accordance with AASHTO R 26, except as noted herein. To become pre-qualified to furnish material, a written request shall be sent to Construction and Materials, along with a copy of the supplier's QC plan. Split samples may be required. Changes in formulation, base stock or methods of manufacture of qualified performance graded binders shall be noted and may require requalification.
1015.10.2 1 Quality Control Plan Requirements. The QC plan shall be in accordance with AASHTO R 26
with the following exceptions and modifications:
a.The plan shall be written to cover multiple terminals or shipping facilities, in addition to the primary manufacturing facility, provided specific requirements for each location are clearly stated.
b.The plan shall state the lot size used to designate the frequency of QC and specification compliance testing for each performance grade to be supplied. The lot size will depend upon the method of manufacture and may be designated on a tank basis, or on a time basis in the case of binders that are blended into trucks or tanks or that are continually blended into "live" tanks.
c.For terminals or manufacturing facilities, the minimum reduced frequency of testing for QC or specification compliance shall be one series of tests every two weeks for "live" tanks or blenders and one series of tests every four weeks for "static" tanks that have had no material added between testing, per lot per grade of binder shipped.
d.Quality Control testing may be used to determine that binders being shipped from terminals or manufacturing facilities have not been contaminated, provided that such testing is shown to be of sufficient accuracy to detect contamination and to assure that material meets required specifications. Surrogate tests may be used for QC testing of non-modified performance graded binders.
e.Terminals or shipping facilities that blend performance graded binders from different sources, that blend to produce a different performance grade, or that blend to modify the properties of an existing performance grade shall perform complete AASHTO M 320 specification compliance testing.
f.The shipping facility shall document that each transport vessel was inspected prior to loading and was found to be acceptable for the material being shipped. The inspection shall be documented by a statement on the bill of lading or truck ticket, or by maintaining a record of transport vessel inspections at the shipping facility, which shall be available for review by MoDOT.
1015.10.2 2 Quality Control Plan Test Data. The facility shall retain test data of specification compliance and
QC testing for five years. At a minimum, the name of the facility, the dates of testing activity, results of individual specification compliance and QC tests identified by blender or tank number, and the mean, minimum and maximum test result for each specification compliance and QC test performed shall be readily available to MoDOT upon request.
1015.10.2 3 Approval of Laboratories. The supplier's primary testing laboratory shall be approved by MoDOT.
The approval process will include split sample testing, and may include an on-site visit by department personnel. The primary testing laboratory shall be regularly inspected by the AASHTO Materials Reference Laboratory (AMRL). Any satellite testing laboratory operated by a supplier shall be inspected at the same frequency by the supplier's primary AMRL inspected laboratory staff, and a copy of the inspection report shall be forwarded to MoDOT.
1015.10.2 4 Failure to Comply. Failure to fulfill any of these requirements may result in disqualification of the
performance graded binder supplier. If a primary manufacturing facility is disqualified, all terminals shipping performance graded binder manufactured at the primary facility and who are not performing AASHTO M 320 specification compliance testing will automatically be disqualified. In cases of dispute, test results obtained by MoDOT will be considered final.
1015.10.3 Characteristics. Performance graded asphalt binder shall be in accordance with AASHTO M 320 for
the grade specified, except as follows. AASHTO T 111, Inorganic Matter or Ash in Bituminous Materials, may be substituted for AASHTO T 44, Solubility of Bituminous Materials, at the specification value indicated prior to the addition of ground tire rubber (GTR.) All blends containing GTR shall include 4.5 percent transpolyoctenamer rubber (TOR) by weight of the GTR. The direct tension test will be waived. The following additional requirements will apply: Binder Characteristics Absolute Temperature Spread Between Upper and Lower Temperature for PG Binder Gradea Elastic Recoveryb, Percent, Minimum, AASHTO T 301 Separation Testc, Percent Difference, Maximum, ASTM D 5976 86 C - - 92 C 55 10 98 C 65 10 104 C 75 10 aTemperature Spread = Upper PG Temperature minus Lower PG Temperature. bElastic recovery test to be performed on the residue from the Rolling Thin Film Oven Test at 25 C and 10 cm elongation. cSeparation test to be performed in accordance with ASTM D 5976, except test upper and lower portions as original binder for G* value according to AASHTO T 315 except for GTR binders that require continuous agitation.
1015.10.3 1 In lieu of AASHTO M 320, AASHTO M 332 may be substituted eliminating the elastic recovery
requirement, except for use with Sec 413.30, Ultrathin Bonded Asphalt Wearing Surface. The equivalent grading of PG 64-22 is as follows: Grade S for PG 64-22, Grade H for PG 70-22 and Grade V for PG 76-22. Specialty grades will be tested at the grade temperature for the desired characteristics, i.e. PG 58-28 for RAS mixtures.
1015.10.4 Characteristics for GTR. Ground tire rubber shall be ambient ground, free of wire or other
contaminating materials and not contain more than 0.1 percent fabric. Cryogenically ground rubber may be used by demonstrating that the GTR is satisfactorily suspended during all phases of production and storage. The gradation of the GTR shall be as follows: Ground Tire Rubber Sieve SizePercent Passing by Weight No. 8 100 No. 16 100-96 No. 30 100-90 No. 50 20 min.
1015.10.4 1 Modification Process. The percentage by weight of binder shall be included with each lot of
material. Ground tire rubber modified asphalt binder shall be tested and certified in accordance with Sec
1015.10.2 and may be incorporated by any of the following methods:
1015.10.4 1.1 Blending at HMA Plant. All sampling and testing shall be performed in accordance the
requirements for terminal blending including high and low temperature testing.
1015.10.4 1.2 Terminal Blending. Blending and certification shall be in accordance with Sec 1015.
1015.10.5 Storage. Performance graded asphalt binder shall be furnished as a uniform mixture shipped directly
to the project site from the asphalt binder supplier's permanent plant address or intermediate storage facility, suitable for direct use. Asphalt binder shall be capable of being stored at the project site without separation or settling. Automatic blending will be allowed at the terminal. Intermediate blending of asphalt binder and additives will not be allowed at the project site, unless the asphalt binder is sampled at a point in the operation which captures the final blended binder with all additives incorporated. SECTION 1015.20 LIQUID BITUMINOUS MATERIAL.
1015.20.1 Basis of Acceptance. Suppliers electing to furnish liquid bituminous material to MoDOT projects by
QC/QA certification shall furnish material in accordance with Sec 1015.20.2. To become pre-qualified to furnish material, a written request shall be submitted to Construction and Materials, along with a copy of the supplier's QC plan. For source approval for any supplier of liquid bituminous material, split samples and an on-site laboratory inspection may be required. A manufacturer may forgo a formal QC plan and elect to perform full compliance testing, and certify each batch of material. If a manufacturer elects to forgo a formal QC Plan, all truck shipments shall be loaded from approved storage tanks that have been sampled, tested and certified by the supplier. If a manufacturer so elects, and automatic blending equipment is used, blender material will be approved for use provided the finished product is in accordance with this specification. At least one complete specification compliance test shall be conducted every two weeks on each grade of material furnished for MoDOT work from the blender. A certified copy of the test results shall be furnished to the engineer. For all liquid bituminous material, AASHTO T 111, Inorganic Matter or Ash in Bituminous Materials, may be substituted for AASHTO T 44, Solubility of Bituminous Materials, at the specification value indicated.
1015.20.2 Quality Control Plan Requirements. The QC plan shall be in accordance with the following:
a.The plan may be written to cover multiple terminals, shipping facilities, blending or manufacturing facilities.
b.The plan shall state the location, organization and responsible personnel for each facility, including the physical address and telephone contact information. In general, following the guidelines in AASHTO R 26 will be acceptable.
c.The plan shall state the minimum testing frequency for all material supplied. At a minimum, each grade of material supplied to MoDOT shall have complete specification compliance testing conducted monthly. Polymer modified material shall have complete specification compliance testing conducted every two weeks. The manufacturer’s internal QC testing frequency shall be approved by MoDOT prior to implementation. The manufacturer shall perform sufficient tests and at a frequency to ensure specification compliant material is being supplied to MoDOT at all times. For emulsified asphalt, QC testing on each batch, at a minimum, shall consist of viscosity, sieve test, determination of residue by either distillation or evaporation and an identifier test, if applicable, for that particular grade, either cement mixing, particle charge or demusibility. The manufacturer may elect to perform additional QC tests. For cutback material, QC testing shall be a minimum of the viscosity on a daily basis when material is being shipped to MoDOT work.
d.In the event of a failing sample, the manufacturer shall follow the steps outlined in AASHTO R 26, Sec. 9.2. If a sample fails to comply with any specification requirement at the Central Laboratory, the manufacturer may only ship new material of that grade after full specification compliance testing. After the manufacturer has certified through specification compliance testing that three consecutive batches are in accordance with the material specification, the manufacturer may return to the testing frequency outlined in the QC/QA plan. If a second sample of the same grade from the same facility fails to comply with any specification requirement within the same calendar year, approval of that facility to supply that grade under QC/QA may be withdrawn. If approval for a grade is withdrawn, that material may only be supplied to MoDOT work after full certification compliance testing has been performed at the Central Laboratory. Re-approval to supply under the supplier’s QC/QA Plan will occur only after three consecutive batches meet specifications after testing at the Central Laboratory. Failure of multiple grades from a single facility tested at the Central Laboratory may result in that facility being removed from approval to supply material to MoDOT. Reinstatement will occur only after all materials in question have been tested at the Central Laboratory and have met all specifications, and documentation from the supplier outlining the reason for the failures and what corrective measures have been taken are to the satisfaction of MoDOT.
e.The shipping facility shall document that each transport vessel was inspected prior to loading and was found to be acceptable for the material shipped. The inspection shall be documented by a statement on the bill of lading or truck ticket, or by maintaining a record of transport vessel inspections at the shipping facility, which shall be available for review by MoDOT. The results of QC/QA testing shall be retained by the supplier for a period of three years. A report containing all test results for any material shall be available to MoDOT upon request.
1015.20.3 Type RC Liquid Asphalt. Type RC liquid asphalt shall be produced by fluxing an asphaltic base
with suitable petroleum distillates. The material shall show no separation or curdling prior to use and shall not foam when heated to the application temperature. The material shall be in accordance with AASHTO M 81, invoking Note 3 using penetration in lieu of viscosity for the grade specified in the contract.
1015.20.4 Type MC Liquid Asphalt. Type MC liquid asphalt shall be produced by fluxing an asphaltic base
with suitable petroleum distillates. The material shall show no separation or curdling prior to use and shall not foam when heated to the application temperature. The material shall be in accordance with AASHTO M 82, invoking Note 4 using penetration in lieu of viscosity for the grade specified in the contract.
1015.20.5 Emulsified Asphalt. Non-polymer emulsified asphalt shall be in accordance with AASHTO M 140
or AASHTO M 208, for the type and grade specified in the contract.
1015.20.5 1 Polymer Modified Asphalt Emulsion - Seal Coat. Bituminous material for polymer modified
asphalt shall be in accordance with the following: Polymer Modified Asphalt Emulsion Testa CRS-2P EA-90P Min Max Min Max Viscosity, SSF @ 50 C 100 400 100 400 Storage Stability Testb, 24 hour, percent ---- 1 ---- 1 Classification Test Pass ---- ---- ---- Particle Charge Test Positive ---- ---- ---- Sieve Test,percent ---- 0.3 ---- 0.3 Demulsibility, 0.02 N CaC12, percent ---- ---- 30 ---- Distillation: Oil distillate by volume of emulsion, percent Residue from distillationc , percent ---- ---- ---- ---- Tests on Residue from Distillation: Penetration,25 C, 100 g, 5 sec Ductility, 4 C, 5 cm/minute, cm Ashd, percent Float Test at 60 C, sec Elastic Recoverye, percent ---- ---- ---- ---- ---- ---- ---- ---- ---- aAll tests shall be performed in accordance with AASHTO T 59 except as noted. bIn addition to AASHTO T 59, upon examination of the test cylinder, and after standing undisturbed for 24 hours, the surface shall show no appreciable white, milky colored substance and shall be a homogeneous brown color throughout. cAASHTO T 59 shall be modified to maintain a 399 F ± 10 F maximum temperature for 15 minutes. dPercent ash shall be determined in accordance with AASHTO T 111, Ash in Bituminous Material. eElastic recovery shall be determined as follows. Condition the ductilometer and samples to be treated at 50 F. Prepare the brass plate, mold and briquet specimen in accordance with AASHTO T 51. Keep the specimen at the specified test temperature of 50 F for 85 to 95 minutes. Immediately after conditioning, place the specimen in the ductilometer and proceed to elongate the sample to 20 cm at a rate of pull of 5 cm/min. After the 20 cm elongation has been reached, stop the ductilometer and hold the sample in the elongated position for 5 minutes. After 5 minutes, clip the sample approximately in half by means of scissors or other suitable cutting devices. Let the sample remain in the ductilometer in an undisturbed condition for one hour. At the end of this time period, retract the half sample specimen until the two broken ends touch. At this point note the elongation (x) in cm. Calculate the percent recovery by the following formula: % Recovery = 20 - X x 100 Polymer Modified Asphalt Emulsion Testa CHFRS-2P Min. Max. Viscosity, SFS @ 50 C 100 400 Storage Stability Test, 24 hour, percent --- 1.0 Demulsibility, 35 ml 0.8% dioctyl sodium sulfosuccinate, percent 60 --- Sieve Test, percent --- 0.10 Particle Charge Test Positive Distillationb Oil Distillate, by volume of emulsion, percent Residue from distillation, percent --- 0.5 --- Tests on Residue from Distillation: Polymer content, weight, percent (solids based) Softening Point, C Float test at 60 C, s Penetration, 25 C, 100 g, 5 s Viscosity @ 60 C, Poise Solubility in Trichloroethylene, percent Elastic Recoveryc @ 10 C , percent 3.0 --- --- --- --- --- aAll tests shall be performed in accordance with AASHTO T-59 except as noted. bAASHTO T59 shall be modified to maintain a 177 ± 5 C maximum temperature to be held for 20 minutes. Complete the total distillation in 60 ± 5 minutes from the first application of heat. cElastic recovery shall be determined as follows. Condition the ductilometer and samples to be treated at 10 C. Prepare the brass plate, mold, and briquet specimen in accordance with AASHTO T 51. Keep the specimen at the specified test temperature of 10 C for 85 to 95 minutes. Immediately after conditioning, place the specimen in the ductilometer and proceed to elongate the sample to 20 cm at a rate of pull of 5 cm/min. After the 20 cm elongation has been reached, stop the ductilometer and hold the sample in the elongated position for 5 minutes. After the 5 minutes, clip the sample approximately in half by means of scissors or other suitable cutting devices. Let the sample remain in the ductilometer in an undisturbed condition for one hour. At the end of this time period, retract the half sample specimen until the two broken ends touch. At this point note the elongation recovery (X) in cm. Calculate the percent recovery by the following formula: % Recovery = 20 - X x 100
1015.20.5 1.1 Polymer Modified Asphalt Emulsion - Tack Coat. Bituminous material for polymer modified
asphalt shall be in accordance with the following: Slow Setting Polymer Modified Asphalt Emulsiona SS-1HP CSS-1HP Test on Emulsion Method MinMaxMinMax Viscosity, Saybolt Furol @ 25°C (77°F), s AASHTO T 59 20 100 20 100 Particle Charge Test Negative Positive Storage Stability Testb, 24 hr, percent AASHTO T 59 -- 1 -- 1 Sieve Test, percent AASHTO T 59 -- 0.50 -- 0.50 Residue by Distillationc, percent AASHTO T 59 57 57 Oil Distillate by Distillation, percent AASHTO T 59 -- -- -- -- Test on Residue from Distillation Penetration 25°C, 100 g, 5 s AASHTO T 49 40 90 40 90 Elastic Recoveryd, 20 cm, 5 cm/min, 60 min, %AASHTO T 301 30 -- 30 -- Solubility in Trichloroethylenee, % AASHTO T 44 97.5 -- 97.5 -- a The emulsified asphalt shall be in accordance with Sec 1015.20.5 of the 2011 Missouri Standard Specifications for Highway Construction, except as indicated above, and shall be modified with a styrene-butadiene diblock or triblock copolymer or a styrene butadiene rubber. b In addition to AASHTO T 59, upon examination of the test cylinder, and after standing undisturbed for 24 hours, the surface shall show no appreciable white, milky colored substance and shall be homogeneous brown color throughout. The storage stability test may be waved provided the asphalt emulsion storage tank at the project site has adequate provisions for circulating the entire contents of the tank, provided satisfactory field results are obtained. c AASHTO T 59 shall be modified to use a lower distillation temperature of 177° C (350° F). d AASHTO T 301 shall be modified to allow the residue to be obtained from distillation as long as the distillation temperature is modified as stated above. The test on residue shall be conducted at a temperature of 10° C (50° F). e In lieu of performing AASHTO T 44, AASHTO T 111, Ash in Bituminous Material, may be performed with a maximum allowable percent ash of 1.0 percent.
1015.20.5 2 Asphalt Emulsion for Micro-Surfacing. Bituminous material for micro-surfacing shall be a
polymer modified asphalt emulsion, grade CSS-lh, in accordance with the following table. The bituminous material shall show no separation after mixing. A minimum of 3.0 percent polymer content, by mass, of an approved polymer shall be milled into the asphalt emulsion at the time of manufacture of the emulsion. The emulsion shall be sampled in accordance with AASHTO T 40. Micro-Surfacing Emulsion (MSE-1) Min. Max. Test Method Viscosity, Saybolt Furol at 77 F, s 20 100 AASHTO T 59 Storage stability test, 24 hr, percent - - 1a AASHTO T 59 Particle charge test positiveb AASHTO T 59 Sieve test, percent - - 0.50 AASHTO T 59 Residue, percent 62 - - AASHTO T 59 Tests on Residue from Distillation Min. Max. Test Method Penetration, 77 F, 100 g, 5 s, 40 90 AASHTO T49 Ductility, 25 C, 5cm/min, cm, 40 - - AASHTO T 51 Solubility in Trichloroethylene, % 97.50 - - AASHTO T 44 aThe storage stability test may be waived provided the asphalt emulsion storage tank at the project site has adequate provisions for circulating the entire contents of the tank, and provided satisfactory field results are obtained. bIf the particle charge test is inconclusive, material having a maximum pH value of 6.7 will be acceptable.
1015.20.5 3 Scrub Seal Emulsion. Scrub seal emulsion shall be smooth and homogeneous, polymer modified,
shall contain an asphalt rejuvenator and shall be in accordance with the following: Scrub Seal Emulsion (SSE-1) Min. Max. Test Method Saybolt Furol Viscosity, SFS @ 77 F 30 100 AASHTO T 59 Storage Stability Testa , 24 hr., % -- 1a AASHTO T 59 Demulsibility, 35 ml of 0.02N, CACl2, % -- 60 AASHTO T 59 Sieve Testb, percent -- 0.3 AASHTO T 59 Residue by Distillation(c) @ 401 ± 10 F, % 60 -- AASHTO T 59 Oil Distillate by Volume, percent -- 3 AASHTO T 59 Tests on Residue from Distillation Min. Max. Test Method Penetration @ 77 F, 5 s, 100 g, dmm 100 300 AASHTO T 49 Float Test @ 140 F, s 1200 -- AASHTO T 50 Ash, percent -- 1 AASHTO T 111 Elastic Recovery, 10 C, 200 mm elongation, 60 min. recovery, percent 30 -- ASTM D 5976 Saturatesd, percent - - 20 ASTM D 4124 aUpon examination of the test cylinder after standing undisturbed for 24 hours, the surface shall show no white, milky colored substance and shall be a homogeneous brown color throughout. bA percentage of 0.30 will be acceptable for samples taken at the point of use or shipped to the Central Laboratory for testing. cASTM D 244 shall be modified to include a 205 ± 5 C maximum temperature to be held for 15 minutes. dASTM D 4124 shall be modified to use Alumina, CG - 20 Grade, available from Aluminum Company of America, Pittsburgh, PA.
1015.20.5 4 Hard Penetration Asphalt Emulsions (SS-1vh). The hard penetration asphalt emulsions shall be
in accordance with the following: Emulsion Properties of Hard Penetration Asphalt Emulsions (SS-1vh) Test on Emulsion Method Min. Max. Viscosity, Saybolt Furol @ 25º C (77º F), s AASHTO T 59 20 100 Storage Stability Testa, 24 hr., percent AASHTO T 59 -- 1.0 Sieve Test, percent AASHTO T 59 -- 0.30 Residue by Distillation, percent AASHTO T 59 50 -- Oil Distillate by Distillation, percent AASHTO T 59 -- 1 Tests on Residue from Distillation Method Min. Max. Softening Point, º F AASHTO T 53 149 200 Penetration 25º C (77º F), 100 g, 5 s AASHTO T 49 -- 40 G* / sin delta @ 76º C – 10 rad/sec, kPa AASHTO T 315 1.0 -- Solubility in Trichloroethyleneb, % AASHTO T 44 97.5 -- aIn addition to AASHTO T 59, upon examination of the test cylinder, and after standing undisturbed for 24 hours, the surface shall show no appreciable white, milky colored substance and shall be homogeneous brown color throughout. The storage stability test may be waved provided the asphalt emulsion storage tank at the project site has adequate provisions for circulating the entire contents of the tank, provided satisfactory field results are obtained. bIn lieu of performing AASHTO T 44, AASHTO T 111, Ash in Bituminous Material, may be performed with a maximum allowable percent ash of 1.0 percent.
1015.20.6 Ultrathin Bonded Wearing Surface. Bituminous material for ultrathin bonded wearing surface shall
be in accordance with the following.
1015.20.6 1 Asphalt Binder. The asphalt binder shall be in accordance with Sec 1015.10, and specifically as
follows: Tests Method Min. Max. Separation Test, % AASHTO PP-5 10 Elastic Recovery Test, %ASTM D 6084 65
1015.20.6 2 Polymer Modified Emulsion Membrane. The anionic or cationic emulsion shall be polymer
modified and shall be in accordance with one of the following: Anionic Polymer Modified Emulsion Membrane (PEM-1) Tests on Emulsion Method Min. Max. Viscosity, Saybolt Furol @122°F, s AASHTO T 59 25 125 Storage Stability Testa, 24 h, percent AASHTO T 59 1 Sieve Testb, percent AASHTO T 59 0.3 Residue by Distillationc, percent AASHTO T 59 63 Oil Distillate by Distillation, percent AASHTO T 59 2 Demulsibilty, %35 ml, 0.02 N CaCl2 AASHTO T 59 60 Tests on Residue From Distillation Penetration AASHTO T 49 90 150 Elastic Recovery, percent AASHTO T 301 60 Cationic Polymer Modified Emulsion Membrane (CPEM-1) Tests on Emulsion Method Min. Max. Viscosity, Saybolt Furol @122°F, s AASHTO T 59 25 125 Storage Stability Testa, 24 h, percent AASHTO T 59 1 Sieve Testb, percent AASHTO T 59 0.3 Residue by Distillationc, percent AASHTO T 59 63 Oil Distillate by Distillation, percent AASHTO T 59 2 Demulsibility, %35 ml, 0.8% dioctyl sodium sulfosuccinate AASHTO T 59 60 Tests on Residue From Distillation Penetration AASHTO T 49 90 150 Elastic Recovery, % AASHTO T 301 60 aAfter standing undisturbed for 24 hours, the surface shall show no white, milky colored substance, but shall be a smooth homogeneous color throughout. bThe sieve test will be waived if successful application of the material has been achieved in the field. cAASHTO T 59 shall be modified to include a 400 F ± 10 F maximum temperature to be held for a period of 15 minutes.
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Source: Missouri Standard Specifications for Highway Construction, 2026 (Oct) Edition. Pages 572–582 of 874. View official source ↗