1710 – GEOSYNTHETICS
1700-19 b. Manufacturers interested in prequalif ying material under this specification must provide, to the Engineer of
Tests, at least a 1 foot by 1 foot sample of the material, installation instructions for the material, certification that the properties of the type of material submitted meet the re quirements of this specification, current NTPEP testing results associated with the type of material submitted and any other information requested by the Engineer of Tests.
c.The submittals will be evaluated for compliance with th is specification, and the manufacturer will be notified of the results.
d.Approved materials will be placed on the prequalified list maintained by the Bureau of Construction and Materials. Products will remain on the prequalified list as long as the field performance and NTPEP test results of the product are satisfactory. 1710.5 BASIS OF ACCEPTANCE
a.Prequalification as specified in subsection 1710.4 .
b.Receipt and approval of a Type C certification as specified in DIVISION 2600 for each shipment. A shipment consists of all material arriving at the job site at substantially the same time but in no instance greater than 1 week. Each week will constitute a new time period requiring a new Type C certification even if the site has been supplied continuously from the previous week.
c.Visual inspection of the material at the job site for quality of workmanship and damage incurred during shipping or job site storage. 1711 – GABIONS
1700-20 Section 1711
GABIONS 1711.1 DESCRIPTION This specification covers gabion fabricated in accordance with this specification and as shown in the Contract Documents. Gabions manufactured from both twisted and welded wire are described here. Provide the type that is specified in the Contract Documents. If neither is specified, either may be provided. 1711.2 REQUIREMENTS
a.General . The following applies, regardless of the method of manufacture. Make the mesh openings with a maximum dimension less than 5 inches, and area less than 11 square inches, and a size less than the gabion or revet mattress rock to be used with the mesh.
b.Twisted Wire Mesh . Provide gabions and permanent fasteners, lacing, stiffeners and other assembly components that comply with ASTM A 975 with the following specific designations. (1) Provide Style 1 unless polyvinyl chloride (PVC) coating is specified.
2.If PVC coating is specified, provide Style 3.
c.Welded Wire Fabric . Provide gabions and permanent fasteners, lacing, stiffeners and other assembly components that comply with ASTM A 974 with the following specific designations.
1.Provide Style 2 (zinc coating after welding) unless polyvinyl chloride (PVC) coating is specified. (2) If PVC coating is specified, provide Style 5 made from Style 2 components. 1711.3 TEST METHODS Test gabion materials according to the ASTM’s cited in subsection 1711.2 . 1711.4 PREQUALIFICATION
a.All material provided under this specification must be prequalified.
b.Manufacturers interested in prequalifying material under this specification must provide 1 gabion that are galvanized and 1 gabion that is PVC coated to the En gineer of Tests for laboratory testing and evaluation. Include samples of all fasteners used to assemble the units a nd incorporate them into a stru cture. Include test reports for the same type of units being submitted, a copy of all technical data, and a complete set of installation recommendations and instructions.
c.The submittals will be evaluated for compliance with this specification, and the manufacturer will be notified of the results.
d.The Bureau of Construction and Materials will maintain a list of qualified materials and a file of installation instructions. Products will remain on the prequa lified list as long as the field performance is satisfactory. 1711.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1711.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 for each shipment. A shipment consists of all material arriving at the job site at substantially the same time. Visual inspection at the job site for quality of workmanship and coatings, and for compliance to dimensions and dimensional tolerances. 1712 – PRE-FABRICATED VERTICAL DRAIN
1700-21 Section 1712
PRE-FABRICATED VERTICAL DRAIN 1712.1 DESCRIPTION This specification covers the requirement s for prefabricated vertical drains. 1712.2 REQUIREMENTS Provide a prefabricated polypropylene channeled core wrapped in a non-woven polypropylene continuous filament geotextile complying with the minimum, minimum average roll values in TABLES 1712-1 and 1712-2 . TABLE 1712-1: PREFABRICATED VERTICAL DRAIN FABRIC, MINIMUM AVERAGE ROLL VALUES Property Requirement Test Method Grab Tensile Strength 130 lbs ASTM D4632 Grab Elongation at Failure > 50% ASTM D4632 Trapezoidal Tear 60 lbs ASTM D4533 Permittivity 0.5 sec-1 ASTM D4491 Apparent Opening Size (AOS) ≤ 0.3 mm ASTM D4751 TABLE 1712-2: PREFABRICATED VERTICAL DRAIN COMPOSITE, MINIMUM AVERAGE ROLL VALUES Discharge Capacity Re quirement Test Method 1.5 gpm 1.5 psi ASTM D4716 1.5 gpm 43.5 psi ASTM D4716 1712.3 TEST METHODS Test in accordance with the requirements stated in subsection 1712.2 . 1712.4 PREQUALIFICATION None required. 1712.5 BASIS OF ACCEPTANCE The Engineer will accept the ge osynthetic material upon the basis of sa tisfactory test results for each lot. A lot is defined as 10,000 feet. If the material fails to co mply with the requirements, the entire lot will be rejected. Any geosynthetic material proposed for use must be evaluated by the Bureau of Structures and Geotechnical Services, Geotechni cal Unit, Soils Section. The entire lot of geosynthetic material must be on site before samples are taken and laboratory testing performed. Allow a minimum of 15 working days for the approval process. After sufficient data has been collected, the testing frequency may be modified upon approval by the Chief Geotechnical Engineer. 1713 – INERTIAL BARRIER SYS TEM AND REPLACEMENT MODULES
1700-22 Section 1713
INERTIAL BARRIER SYSTEM AND REPLACEMENT MODULES 1713.1 DESCRIPTION This specification covers inertial ba rrier systems and replacement modules. 1713.2 REQUIREMENTS Provide an inertial barrier system and replacement modules as shown in the Contract Documents. Inertial barrier systems may be previously used. 1713.3 TEST METHODS None specified. 1713.4 PREQUALIFICATION All inertial barrier systems must be prequalified as a unit. Manufacturers wishing to supply inertial barrier systems to KDOT projects must send a complete evalua tion package including the FHWA letter of acceptance and all design and testing information to the KDOT Bureau of Road Design. The information will be reviewed and the manufacturer will be notified of the re sults. Those systems that are satis factory for use will be placed on a prequalified list maintained by the Bureau of Construction and Materials. 1713.5 BASIS OF ACCEPTANCE Inertial barriers and repair modules will be accepted as a complete system or module on the basis of a prequalified brand name, a Type C certification and visual inspection of the completed installation. 1714 – CEMENTITIOUS GROUT
1700-23 Section 1714
CEMENTITIOUS GROUT 1714.1 DESCRIPTION This specification covers cementitious grouts used to bond anchor bolts and reinforcing steel to hardened concrete. This includes self-contained grouts, which are cementitious materials encapsulated in a water permeable layer. This includes the backfilling of CSL tubes. 1714.2 REQUIREMENTS
a.Provide material that complies with ASTM C 1107 or Corps of Engineers CRD-C 621.
b.For self-contained grouts, provide material complying with TABLE 1714-1 : TABLE 1714-1: SELF-C ONTAINED GROUTS Property Test Method Requirement Soaking Time 1 to 3 min. Initial Set Time, min. ASTM C 1102 20 min. Compressive Strength 28-day min. ASTM C 39 4,000 psi Shrinkage ASTM C 1090 0.00% Expansion ASTM C 1090 1.5% Pull Out Strength ASTM E 488 9,000 lbf Freeze-Thaw, min. ASTM C 666, 300 cycles 95% 1714.3 TEST METHODS Test as specified in subsection 1714.2 . 1714.4 PREQUALIFICATION
a.Manufacturers interested in prequalifying material under subsection 1714.2a . must submit the following to the Bureau of Construction and Materials:
1.A complete description, literature, and set of instructions and recommendations, (2) A copy of test results performed in accordance with ASTM C 1107 or CRD-C 621,
3.Certificate stating results comply with ASTM C 1107 or CRD-C 621, and
4.Material Safety Data Sheets (MSDS).
b.Manufacturers interested in prequalifying material under subsection 1714.2b . must submit the following to the Bureau of Construction and Materials: (1) A complete description, literature, and set of instructions and recommendations,
2.A copy of test results performed as outlined in subsection 1714.2b. ,
3.Certificate stating results comply with the values outlined in subsection 1714.2b. , and
4.Material Safety Data Sheets (MSDS).
c.The Bureau of Construction and Materials will mainta in a list of qualified materials. Products will remain on the list as long as field performance is satisfactory. 1714.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1714.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . Visual inspection by the Field Engineer. 1715 – CONCRETE MASONRY COATING
1700-24 Section 1715
CONCRETE MASONRY COATING 1715.1 DESCRIPTION This specification covers cement based polymer or acry lic polymer water seal for use in coating and sealing the exterior face of exterior prestressed concrete beams, joints between concrete ov erlays, bridge curb faces, masonry and other applications as stated in the Contract Documents. 1715. 2 REQUIREMENTS Provide materials with the following properties: Coats and waterproofs concrete and masonry. Does not produce a vapor barrier (breathes). Is thermally compatible with portland cement mortar and concrete. Exhibits no chalking, checking, cracking, scaling, blistering or other deleterious effects after 5000 hours in a Xenon Arc Light Apparatus. (ASTM G 155). Color is to be gray to retain a natural concrete appearance, unless otherwise specified in the Contract Documents. 1715.3 TEST METHODS As specified in ASTM G 155 for the Xenon Arc Light Apparatus only. 1715.4 PREQUALIFICATION All concrete masonry coatings must be prequalified. Manufacturers interested in prequalifying material under this specification must submit the following to the Bureau of Construction and Materials: A complete description, technical data, and set of instructions and recommendations. A copy of test results from an independent laboratory regularly inspected by a national reference organization (CCRL, AMRL, etc) confirming the various properties outlined above. Material Safety Data Sheets (MSDS). The Bureau of Construction and Materials will maintain a list of qualified materials. Products will remain on the list as long as field performance is satisfactory. 1715.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1715.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . Visual inspection by the Field Engineer. 1716 – RAPID-SET CONCRETE PATCHING MATERIAL
1700-25 Section 1716
RAPID-SET CONCRETE PATCHING MATERIAL 1716.1 DESCRIPTION This specification covers requirements for rapid setting cementitious materials for concrete repairs. 1716.2 REQUIREMENTS
a.Provide material that complies with ASTM C 928.
b.Freeze-thaw durability will be determined using ASTM C 666, Procedure B. At the end of 300 freeze- thaw cycles, acceptable products must e xhibit expansion of less than 0.10%, and a calculated durability factor of 90.0% minimum.
c.When allowed in the Contract Do cuments, extender aggregate may be combined with the neat rapid setting material according to the manufact urer's recommendations. The resulting co mbined material is subject to the foregoing requirements. Products will be tested neat as received, and also extended to the full amount allowed by the manufacturer, and will be classified as Rapid Harden ing (R1), Very Rapid Harden ing (R2) or Ultra Rapid Hardening (R3) based on the results. A product may be cla ssified in one category when te sted neat as received, and another when tested extended the maximum amount. All extender aggregate used on Contracts must be from a source that has a current Official Quality approval status for Mixed Aggregate per SECTION 1102 .
d.Provide material classified as Rapid Hardening, Very Rapid Hardening or Ultra Rapid Hardening as specified in the Contract Documents. Any prequalified higher class of material may be substituted for a lower class specified at no additional cost. If no class is specified, any prequalified product may be supplied.
e.Provide the same product as prequalified un der the AASHTO National Transportation Product Evaluation Program (NTPEP), including water/cement ratio an d proportion of aggregate (i f applicable). If the product was prequalified using a manufacturer-provided aggr egate, then the aggregate may be substituted by using an approved local source at the same proportioning established during prequalification. 1716.3 TEST METHODS Test material in accordance with the applicable parts of ASTM C 928 and ASTM C 666, Procedure B. 1716.4 PREQUALIFICATION Supply samples for prequalification to the AASHTO National Transportation Product Evaluation Program (NTPEP). Forward an official copy of the test report to the Bureau Chief of Construction and Materials for evaluation. Include information regarding the soluble chloride content of the material, and the mandatory statement from ASTM C 928 if it exceeds 1 lb/cu yd. Include the metallic iron content and the mandatory statement from ASTM C 928 if it exceeds 1% by mass. Prequalification w ill be based on satisfactory compliance of NTPEP results with this specification. Products will be classified as Rapid Hardening, Very Rapi d Hardening or Ultra Rapid Hardening in both the neat and extended mixes based on the NTPEP results. If the NTPEP laboratory results comply with subsection 1716.2 and if, after 300 freeze-thaw cycles, the laboratory test specimens exhibit no cracking and only very slight scaling or spalling (minimum 1/8 inch depth) with no coarse aggregate visible, the name of the product will be placed on a list of prequalified products maintained by the Bureau of Construction and Materials. No rapid setting concrete patch material will be used on KDOT projects unless it has been prequalified. Manufacturers are required to resubmit their products fo r testing at intervals stipulated by NTPEP. Failure to resubmit products may be cause for removal from the prequalified listing. 1716.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1716.4 . Receipt and acceptance of a Type C certification as specified in
Division 2600
1717 – PRECAST PAN EL BEDDING MATERIALS
1700-26 Section 1717
PRECAST PANEL BEDDING MATERIALS 1717.1 DESCRIPTION This specification covers material for bedding prestressed concrete panels used as a slab in bridge construction. 1717.2 REQUIREMENTS
a.Provide bedding material for precast units that complies with TABLE 1717-1 for expanded or extruded polystyrene. TABLE 1717-1: BEDDING MA TERIAL FOR PR ECAST UNITS Property Test Method Compressive Strength, 60 psi, min. ASTM D 1621 Water Absorption, 2% by vol. max. ASTM D 2842 Oxygen Index, 24 min. ASTM D 2863
b.Use a type of glue recommended by the bedding material manufacturer to secure the bedding material to the girder. 1717.3 TEST METHODS ASTM tests as specified above. 1717.4 PREQUALIFICATION Manufacturers desiring to provide material under this specification are to submit a 2 x 2 ft prequalification sample of each product which they wish to prequalify. Provide complete instructions on the use of the mate rial and a Material Safety Data Sheet (MSDS). State the type of glue which is accept able for use with the material. Provide a test report from an independent laboratory for the properties cited above. Forward the prequalification samples and information to the Engineer of Tests. The Material will be tested as necessary to verify the information on the independent la boratory test report. Manufacturers will be notified of the test results. If the prequalification samples comply with subsection 1716.2 , the name of the product, along with the allowable type of glue to be used, will be placed on a lis t of prequalified products ma intained by the Bureau of Construction and Materials. No precast bedding material may be used on KDOT projects unless it has been prequalified. 1717.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1717.4 . Receipt of a Type C certification as specified in DIVISION 2600 . Observation of performance in the field. 1718 – BOND-BREAKER FOR PORTLAND CEMENT CONCRETE PAVEMENT DOWEL BARS
1700-27 Section 1718
BOND-BREAKER FOR PORTLAND CEMENT CONCRETE PAVEMENT DOWEL BARS 1718.1 DESCRIPTION Bond-breaker is applied to dowel ba rs to be placed in contraction joints in rigid pavement before placement of the concrete. The material serves to prevent the concrete from bonding to the dowel bars, thus preserving the joint as a working one. 1718.2 REQUIREMENTS
a.Bond-breaker must have an average pu ll out resistance less than 3400 lbs.
b.Bond-breaker must not have any detrimental effects on portland cement concrete or the epoxy coating on the dowel bars.
c.Apply bond-breaker accordin g to the manufacturer's instructions. Do not a pply bond-breaker with a thickness value greater than 24 mils. The thickness value is the average of 3 measurements taken at ¼, ½ and ¾ bar length spaced 120 degrees apart. No measur ements are permitted to exceed 24 mils.
d.Dowels that have bond-breaker applied in the plant by the dowel supplier must be stored in such a way as to prevent dust, dirt or any other contaminant that would impair the bond-breaking action, from accumulating on the treated surface. Pre-coated dowels th at have been stored in the field for any length of time will be inspected to verify that the coating is still ac tive and will perform as required. 1718.3 TEST METHODS Test pull out resistance using KDOT Test Method KT MR-16, Testing of Dowel Bars Placed in Concrete for Resistance to Removal (Pull Out). 1718.4 PREQUALIFICATION
a.All bond-breakers intended for use under this specification must be prequalified before use. Submit a written request to the Bureau Chief of Construction and Mate rials with the following information for each type and brand name:
1.Name, address and telephone number of the manuf acturer. Include the name of the preferred contact person.
2.Brand name of the material.
3.Information regarding recommended usage and application instructions.
4.Material Safety Data Sheets.
b.Submit three smooth 1 1/8 inch diameter (No. 9) epoxy coated dowel bars and sufficient bond-breaker material to coat the bars before sample preparation and tes ting. Send the samples to the Engineer of Tests. The bars will be coated, then cast in concrete and the bond tested. Submit one additional No. 9 bar for the noncoated comparison test. All sample bars should be a minimum of 24 inches in length.
c.The information and test reports will be reviewed by the Bureau Chief of Construction and Materials. The manufacturer will be advised as to whether or not the product is prequalified.
d.The Bureau of Construction and Materials will mainta in a list of prequalified bond-breakers. Products will remain prequalified as long as the formulation and manufacturing processes remain unchanged, and field experience indicates that the material functions appropriately. Changes in formulation or manufacturing processes will require new prequalification testing. Failure of the mate rial to function appropriately in the field will be cause for removal of the product from prequalified status. Pr oducts removed from prequalified status will be again 1718 – BOND-BREAKER FOR PORTLAND CEMENT CONCRETE PAVEMENT DOWEL BARS
1700-28 considered for prequalification if the manufacturer can provi de evidence that the cause of failure has been positively
identified, and necessary formulation changes and quality control measures have been implemented to eliminate that cause. Complete prequalification testing will be required for products which have been removed from prequalified status. 1718.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1718.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . 1719 - RELEASE COMPOUND FOR ASPHALT MIXES
1700-29 Section 1719
RELEASE COMPOUND FOR ASPHALT MIXES 1719.1 DESCRIPTION This specification covers releas e compounds for asphalt mixes. 1719.2 REQUIREMENTS Provide a concentrated liquid release compound contai ning no petroleum solvents (diesel fuel, kerosene, etc.) that complies with the following: Deleterious Effects: The percentage of coating on the aggregate-binder mixt ure containing the release compound is equal to that of the mixture without the release agent. Release Capabilities: A hot aggregate-binder mixt ure slides freely in a shallow pan wetted with the release compound. Effect on Asphalt Penetration: No more than 7 units difference between a sample in water and one placed in the release compound. 1719.3 TEST METHODS Test the material in accordance with KTMR-19. 1719.4 PREQALIFICATION
a.Each release compound must be prequalified. Submit a written request to be evaluated for prequalification to the Bureau Chief of Construction and Materials. Provide the following for each brand an d type of material to be evaluated:
1.Name, address, and telephone number of th e manufacturer and the preferred contact person.
2.Name of product and manufacturers dilution recommendation.
3.Material Safety Data Sheets.
4.Results of tests from the AASHTO National Tran sportation Product Evaluation Program (NTPEP). Include the most recent NTPEP test report along with eviden ce that the product being offe red is identical to the one reported in the NTPEP report.
b.A one quart sample will be accepted in lieu of the NT PEP test report until June 1, 2016. Submit the sample in addition to the documentation requested above for prequalification to the Engineer of Tests. The manufacturer will be a dvised of the results.
c.The Bureau of Construction and Materials will maintain a list of prequalified release compounds. Any prequalified product that does not have a NTPEP test report on file as of January 1, 2017 will be removed from the list of prequalified release compounds. Changes in the formulation, manufacturing process, or failure of the release compound to function appropriately will require a new prequalification. 1719.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1719.4 . Satisfactory performance in the field. 1720 - MODULAR EXPANSION DEVICES
1700-30 Section 1720
MODULAR EXPANSION DEVICES 1720.1 DESCRIPTION This specification covers providing a prefabricated modular expansion device on bridges in accordance with these specifications. The device includes the entire ma nufactured product (multiple sealing elements, steel edge beams and separation beams, joint armoring and attachments, support bars, support boxes and all parts) as well as all attached components. When shown in the Contract Documents, drains at the ends of the devices are subsidiary to the modular expansion devices. 1720.2 REQUIREMENTS
a.Unless shown otherwise in the Contract Documents, provide one of the prequalified brands and models that will accommodate the total design movement shown in the Contract Documents. All modular expansion devices for any single structure must be provided by one supplier.
b.Shape the device to comply closely to the cross slope. Field cutting of the device will not be permitted.
c.Use steel for all major metal components.
d.Use neoprene (Polychloroprene) complying with ASTM D 2628 for the elastomeric sealing units/elements unless modified otherwise by the supplier on the shop drawings. Make the elements one-piece full length of the expansion device, including curbs, and as detailed in the Contract Documents.
e.After installation, there may be no appreciable change in the surface of the modular expansion device when the bridge expands and contracts.
f.Submit shop drawings as specified in DIVISION 700 . 1720.3 TEST METHODS Compliance with approved shop drawings for the assembly. Use ASTM D 2628 for the neoprene. 1720.4 PREQUALIFICATION All modular expansion devices must be prequalified as a unit. Manufacturers wishing to supply modular expansion devices to KDOT projects must send a comple te evaluation package including all design and testing information to the KDOT Bureau of Structural and Geot echnical Services. The information will be reviewed and the manufacturer will be notified of th e results. Those systems that are sa tisfactory for use will be placed on a prequalified list maintained by the Bureau of Construction and Materials. 1720.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1720.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . Visual inspection for condition and dimensional requirements shown on the shop drawings. 1721 - FABRIC TROUGH
1700-31 Section 1721
FABRIC TROUGH 1721.1 DESCRIPTION This specification covers a material to be installed as a trough below the finger type and sliding plate type expansion joints (or for other applications as shown in the Contract Documents) to carry drainage off the bridge, and prevent saltwater and debris from r unning down on other bridge members. 1721.2 REQUIREMENTS Provide fabric trough material composed of one or two ply tightly woven nylon fabric bonded to, laminated, or covered on both sides with a high density neoprene, ethylene-propylene-diene-monomer (EPDM), or buna-nitrile PVC, that complies with TABLE 1721-1 . TABLE 1721-1: REQUIREMEN TS FOR FABRIC TROUGH Property Requirement Test Method Thickness (mm) 3 to 5 Mass (g/sq m minimum) 3560 Durometer Hardness (Shore A) 50A to 75A ASTM D 2240 Low Temperature Brittleness (22 hrs. @ -29ºC, then wrapped around a 75 mm diameter mandrel) No Cracks Tensile Strength, kg/25 mm minimum, both directions 363 ASTM D 412 Elongation, %, maximum 35 ASTM D 412 Tear (Die C), kg/25 mm minimum 55 ASTM D 624 Ozone Resistance (100 hours of exposure of 20% elongated samples @ 38ºC and 100 PPHM ozone.) No Cracks ASTM D 1149 Provide material that is resistant to abrasion, sunlight, oils, and saltwater. 1721.3 TEST METHODS Use the ASTM methods cited above. 1721.4 PREQUALIFICATION None required. 1721.5 BASIS OF ACCEPTANCE Receipt and approval of a Type B certification as specified in DIVISION 2600 , and visual inspection for condition. 1722 - FIBROUS REINFORCEMENT FOR CONCRETE
1700-32 Section 1722
FIBROUS REINFORCEMENT FOR CONCRETE 1722.1 DESCRIPTION This specification covers both micro and macro fibers for use as reinforcement in concrete. Micro fibers are used to control plastic shrinkage cracks in concrete wh ile macro fibers control cracking in hardened concrete and are often used as a substitute for traditional crack control st eel reinforcing bars or mesh. In addition, macro fibers add toughness, and impact and fatigue resistance to hardened concrete. 1722.2 REQUIREMENTS
a.Micro fibers.
1.Provide fibers that are 100% virgin polypropylene, fibrillated, rough textured, interconnected fibers containing no reprocessed olefin materials and sp ecifically manufactured as concrete reinforcement.
2.Provide fibers that are graded with a maximum length of 2 inches and a minimum tensile strength of 32 ksi.
b.Macro fibers.
1.Provide macro synthetic fibers as defined in ASTM C 1116, Type III, and ASTM D 7508.
2.Provide fibers having a minimum length of 1.25 inches, a maximum length of 2.0 inches, and an aspect ratio (length divided by equivalent diameter) between 70 and 100, inclusive.
3.Provide fibers with a minimum tensile strength of 50 ksi.
4.Provide fibers, which when tested using the procedure described in subsection 1722.4b . , r e s u l t i n a minimum strength ratio (R e,3) of 25%. 1722.3 TEST METHODS – MICRO FIBERS None specified. 1722.4 TEST METHODS – MACRO FIBERS
a.Determine the tensile strength of macro fibers using ASTM D 7508.
b.Determine equivalent flexural strength ratio (R e,3) using ASTM C 1609 with the following modifications:
1.Utilize 6 x 6 x 20 inch (150 x 150 x 500 mm) beam specimens tested using an 18 inch (450 mm) span. (2) Test at least three beam specimens using the concrete mixture described below.
3.Test beam specimens when the concrete compressive strength is between 3,000 and 5,000 psi. Test three 6 x 12 inch cylinders to verify concrete compressive st rength of beam specimens at testing. No single cylinder break shall deviate from the other breaks by more than 10% . Provided the average of th e three breaks is within the test limits described above, beam testing can proceed.
4.In addition to the strength requirements , use test concrete satisfying the following: 0.35 to 0.50 water cement ratio by weight no supplementary cementitious materials air-entraining admixtures only 50% coarse – 50% fine aggregate by weight maximum aggregate size: ¾” fine aggregate: naturally occurring (uncrushed) sand - no manufactured sand percent air by volume: 6.5±1.5% minimum fiber dosage: 4.0 lbs per cubic yard of concrete
c.Testing shall be performed by a laboratory regularly inspected by the Cement and Concrete Reference Laboratory (CCRL) of the National Institute of Standards and Technology, or other approved reference laboratory. 1722 - FIBROUS REINFORCEMENT FOR CONCRETE
1700-33 1722.5 Prequalification
a.Manufacturers wishing to provide fibrous reinfo rcement for concrete for KDOT projects must be prequalified.
b.Submit a small sample to the Bureau of Construction and Materials for prequalification. Include the following information:
1.Name, address and telephone number of the manufacturer and the preferred contact person. (2) Name of product and manufacturer’s recommended dosage rate or rates.
3.Technical data sheets.
4.Material Safety Data Sheets. In addition, submit either of the following:
5.For micro fibers - Test reports substantiating the requirements of subsection 1722.2a .
6.For macro fibers - Test reports substantiating the requirements of subsection 1722.2b . For the C 1609 requirements, include both the mix design of the test concrete, the compressive strength data of the test concrete at the time of beam testing, and the fiber dosage used during testing to satisfy the R e,3 requirements of subsection 1722.2b .
c.The submittal will be reviewed and the manufacturer will be notified of the results. The Bureau of Construction and Materials will maintain a list of prequa lified fibrous reinforcement. For each prequalified macro fiber, a minimum fiber dosage, reported from subsection 1722.5b.(6) , will be shown for each product. 1722.6 BASIS OF ACCEPTANCE Prequalification as required by subsection 1722.5 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . In addition, when macro fibers are being used as a substitute for 6 X 6 – W4 X W4 welded wire reinforcement in valley gutters and entrance pavement, provide a copy of the approved mix design with the prequalified fiber manufacturer, product name, and dosage clearly identified. Use a fiber dosage that is not less than the product’s value shown on the prequalified list. 1723 - NON-METALLIC OFFS ET BLOCKS FOR GUARDRAIL
1700-34 Section 1723
NON-METALLIC OFFSET BLOCKS FOR GUARDRAIL 1723.1 DESCRIPTION This specification governs non-metallic offset blocks for guardrail that are not covered under the wood post specification in DIVISION 2300 . Substitution for the wood offset blocks is permitted for line and bullnose guardrail sections as shown on the Contract Documents. Substitution within the end terminal sections is only permitted when specified by the manufacturer of the end terminal. 1723.2 REQUIREMENTS
a.General.
1.Any manufacturer producing non-metallic offset blocks for guardrail under this specification must be currently prequalified. Procedures for prequalification are outlined in subsection 1723.4 .
2.Unless shown otherwise in the Contract Documents, manufacture all offset blocks provided under this specification that comply with the applicable subsections.
b.Material Specifications. Provide offset blocks of the sa me chemical composition and physical properties as those accepted under the NCHRP 350 crash test. Provide offset bl ocks that comply with TABLE
1723-1 .
TABLE 1723-1, REQUIREMENTS FO R NON-METALLIC OFFSET BLOCKS Property Test Method Requirement UV Protection ASTM G 155 No visible change to the block. Compressive Strength See subsection 1723.3 To become prequalified ≥ 450 psi. Verification Samples not to exceed ± 20% of prequalification results. Water Absorption ASTM D 2842 % Absorption ≤ 20% Solvent Resistance KTMR-31 No evidence of softening, blistering, crinkling, dissolving, or change in color or appearance. Defects and Voids Visual Not to exceed ½ inch diameter.
c.Dimensions . Provide offset blocks that comply with the dimensions and details shown in the Contract Documents. 1723.3 TEST METHODS Test the ultraviolet (UV) protection of the block using ASTM G 155, “Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-metallic Materials. ” Utilize Cycle #1 for 500 hours following Table X3. Use a sample size of 1 inch by 4 inch by 4 inch. Perform KTMR-31, “Solvent Resistance of Non-metallic Materials.” Obtain a copy of this test by contacting KDOT’s Quality Assurance Secti on in the Materials and Research Center. Determine the strength of 1 complete block in this manner: Apply the compressive force along the entire length and in the direction that is perpendicular to both the guardrail and post. Support the post track so no force is applied to edges. Blocks are required to have a minimum compressive stress of 450 psi. Calculate the pressure by using the average longitudinal cross section area. Use a properly calib rated compression machine as defined in ASTM E 4. Determine the water absorption of the block using ASTM D 2842, Procedure B, with the following exceptions: Use the actual width and thickness of the specime n instead of the specified 6 inch by 6 inch dimensions. Under 9. Conditioning, delete 9.2 and 9.3. Add 9.2 Cool to room temperature and weigh to the nearest 0.1 g. Change 9.4 to 9.3. Under 10. 2 Procedure B, maintain a water bath temperature of 77 + 2ºF.
Source: Kansas Standard Specifications for State Road and Bridge Construction, 2015 Edition. Pages 809–824 of 978.