707.1-AIR-ENTRAINING ADMIXTURES FOR CONCRETE: 707.1.1-Acceptance Requirements for Air-Entraining Admixtures: 707.1.1.1-In the event that the Contractor elects to use an air -entraining admixture, evidence based on testing by NTPEP (National Transportation Product Evaluation Program) shall be submitted to the Division to show that the material conforms to the requirements of AASHTO M 154. Tests for bleeding, bond strength and volume change will not be required unless specifically called for in the Plans. 707.1.1.2-An exception to the requirements in the preceding paragraph is the case of air-entraining admixtures which are manufactured by neutralizing Vinsol resin with caustic soda (sodium hydroxide). When the Contractor proposes to use such an admixture, the Contractor shall submit a certificate concerning the admixture is the following form: "This is to certify that the product (trade name) as manufactured and sold by the (company) is an aqueous solution of Vinsol resin that has been neutralized with sodium hydroxide. The ratio of sodium hydroxide to Vinsol resin is one part of sodium hydroxide to (number) parts of Vins ol resin. The percentage of solids based on the residue dried at 221F is (number). No other additive or chemical agent is present in this solution." 707.1.1.3-When the Contractor proposes to use a air -entraining admixture which has been previously app roved, the Contractor shall submit a certification stating that the admixture is the same as that previously approved. If an admixture offered for use is essentially the same (with only minor differences in concentration) as another previously approved material, a certification will be required stating that the product is essentially the same as the approved admixture and that no other admixture or chemical agent is present. 707.1.2-Optional Acceptance Requirements for Air-Entraining Admixtures: 707.1.2.1-The Division may elect to approve air-entraining admixtures as satisfactorily meeting acceptance requirements as outlined. If the Division chooses to exercise this option, then the acceptance requirements specified in subsection 707.1.1 above shall be modified as noted. 707.1.2.2-The Division may develop a spectroscopic standard for an air -entraining admixture if such air-entraining admixture has previously been approved by the Division as satisfactorily meeting all the specification requirements as set forth in subsection 707.1.1. 707.1.2.3-When a Contractor proposes to use an air -entraining admixture for which a spectroscopic standard has been developed, then the air -entraining admixture may be approved without further certification being made if a special analysis made on a representative sample of the admixture proposed for use on the project compares satisfactorily with the standard related thereto. 707.1.3-Additional Test Requirements for Air-Entraining Admixtures (Optional): 707.1.3.1-Either prior to or at any time during construction, the Engineer may require that the admixture selected by the Contractor be further tested to determine its effect upon the strength of the concrete. When so tested, the seven -day compressive strength of concrete made with the cement and aggregates in the proportions to be used in the work and containing the admixture under test is an amount sufficient to produce from four to seven percent (4-7%) entrained air in the plastic concrete shall be not less than 88 percent (88%) of the strength of concrete made with the same materials and with the same cement content and consistency but without the admixture. 707.1.3.2-The percentage reduction in strength shall be calculated from the average strength of at least five (5) standard six (6) by twelve (12) inch cylinders of each type of concrete. Specimens shall be made and cured in the laboratory in accordance with the requirements of ASTM C192 and shall be tested in accordance with the requirements of ASTM C39. The percentage of entrained air shall be determined in accordance with the requirements of ASTM C231. 707.1.3.3-Admixtures failing to meet the above requirements will be rejected. 707.2-WATER-REDUCING AND RETARDING ADMIXTURES FOR CONCRETE: 707.2.1-Acceptance Requirements for Approval of Retarders: Water reducing and retarding admixtures for concrete shall be tested by NTPEP (National Transportation Product Evaluation Program). The NTPEP testing results shall meet the requirements of AASHTO M 194, Type D or Type G. 707.2.2-Performance Requirements for Concrete Retarders: 707.2.2.1-The retarding effect caused by water-reducing and retarding admixtures may vary widely with different types of cement, cement from different mills, aggregates from different sources and of different gradation, and changes in water-cement ratio. Therefore, no retarder shall be used until the concrete of the specified class, designed in accordance with the Specifications and made with the ingredients proposed for use by the Contractor, including Type D or Type G admixtures as specified or permitted under this specification, is shown to meet the requirements of AASHTO M 194 for water reduction and compressive strength increases at ages 3, 7 and 28 days. When a Type G admixture is used for the sole purpose of in creasing the slump of the subject concrete mix (no water is removed when this admixture is added), the requirements of AASHTO M 194 for water reduction and compressive strength increases will be waived. When a Type G admixture is used for the sole purpose of increasing the slump of the subject concrete mix (no water is removed when this admixture is added), the requirements of AASHTO M 194 for water reduction and compressive strength increases will be waived. 707.2.2.2-The mix shall contain the quantity of admixture recommended by the manufacturer at the prevailing temperature. 707.2.3-Optional Performance Requirements for Concrete Retarders: 707.2.3.1-The Division may elect to approve water-reducing and retarding admixtures as satisfactorily meeting performance requirements as outlined. If the Division chooses to exercise this option, then the performance tests specified in subsection 707.2.2 will be waived. 707.2.3.2-The Division's testing laboratory may design concrete mixes in which various types and gradings of aggregates and various types of cements are used and in which water-reducing and retarding admixtures are used, the admixtures first havi ng met the acceptance requirements for approval of concrete retarders as specified in subsection 707.2.1. The water-reducing and retarding admixtures used in laboratory design mixes may be subjected to a spectral analysis, and a spectroscopic standard or a standard spectrograph may be developed if the admixture in combination with the particular type and grading of aggregate and the particular type of cement has met the performance requirements for water-reducing admixtures as specified in subsection 707.2.2. 707.2.3.3-When a Contractor proposes to use a water-reducing and retarding admixture with a type of grading of aggregate and a type of cement which was previously used in a laboratory design mix and for which a special standard is available, the reta rder may be approved on the basis of a spectral analysis made on a representative sample of the admixture proposed for use on the project if:
i.The spectral analysis compares satisfactorily with the standard related thereto, and ii. The admixture met performance requirements in previous tests conducted in the Division's laboratory as outlined in subsection 707.2.3.2. 707.2.4-Certification of Water -Reducing and Retarding Admixtures: When a Contractor proposes to use an approved water -reducing and ret arding admixture, the Contractor shall submit a certificate stating that the admixture is identical in composition with the sample that was used for the acceptance tests. If the admixture varies in concentration from the acceptance sample, a certificate w ill be required stating that the product is essentially the same for chemical ingredients as the approved admixture, and that no other admixture or chemical has been added. 707.2.5-Additional Test Requirements for Water -Reducing and Retarding Admixtures (Optional): Either prior to or at any time during construction, the Engineer may require the selected admixture to be tested further to determine its effect on the strength of the concrete. When so tested the retarder shall meet the requirements specifi ed in subsection 707.2.2. 707.3-WATER-REDUCING ADMIXTURES FOR CONCRETE: 707.3.1-Acceptance Requirements for Approval of Water -Reducers: Water-reducing admixtures for concrete shall be tested by NTPEP (National Transportation Product Evaluation Program). The NTPEP testing results shall meet the requirements of AASHTO M 194, Type A or Type F. 707.3.2-Performance Requirements for Concrete Water-Reducers: 707.3.2.1-The effects of using water -reducing admixtures may vary widely with different types of cement, cement from different mills, aggregate proportions, aggregates from different sources and of different gradation, and changes in water -cement ratio. Therefore, no water-reducer shall be used until the concrete of the specified class, designed in accordance with these Specifications and made with the ingredients proposed for use by the Contractor, including Type A or Type F admixtures as specified or permitted under this Specification, is shown to meet the requirements of AASHTO M 194 for water reduction and compressive strength increases at ages 3, 7 and 28 days. When a Type F admixture is used for the sole purpose of increasing the slump of the subject concrete mix (no water is removed when this admixture is added), the requirements of AASHTO M 194 for water reduction and compressive strength increases will be waived. 707.3.2.2-The mix shall contain the quantity of admixture recommended by the manufacturer at the prevailing temperature. 707.3.3-Optional Performance Requirements for Concrete Water-Reducers: 707.3.3.1-The Division may elect to approve water -reducing ad mixtures as satisfactorily meeting performance requirements as outlined. If the Division chooses to exercise this option, then the performance tests specified in subsection 707.3.2 will be waived. 707.3.3.2-The Division's testing laboratory may design c oncrete mixes in which various types and gradings of aggregates and various types of cement are used and in which water-reducing admixtures are used, the admixture first having met the acceptance requirements for approval of concrete water -reducers as spe cified in subsection 707.3.1. The water -reducing admixture used in laboratory design mixes may be subjected to a special analysis, and a spectroscopic standard or a standard spectrograph may be developed if the admixture in combination with the particular type and grading of aggregate and the particular type of cement has met the performance requirements for water -reducing admixtures as specified in subsection 707.3.2. 707.3.3.3-When a Contractor proposes to use a water -reducing admixture with a type and grading of aggregate and a type of cement which was previously used in a laboratory design mix and for which a spectral standard is available, the water -reducer may be approved on the basis of a spectral analysis made on a representative sample of the admixture proposed for use on the project if:
i.The spectral analysis compares satisfactorily with the standard related thereto, and ii. The admixture met performance requirements in previous tests conducted in the Division's laboratory as outlined in subsection 707.3.3.2. 707.3.4-Certification of Water-Reducing Admixtures: When a Contractor proposes to use an approved water-reducing admixture, the procedure set forth in subsection 707.2.4 shall apply. 707.3.5-Additional Test Requirements for Water -Reducing Admixtures (Optional): Either prior to or at any time during construction, the Engineer may require the selected admixture to be tested further to determine its effect on the strength of the concrete. When so tested the water-reducer shall meet the requirements specified in subsection 707.3.2. 707.4-SUPPLEMENTARY CEMENTITIOUS MATERIALS (SCMs) FOR USE IN PORTLAND CEMENT CONCRETE: All SCMs shall be approved in accordance with MP 707.04.10. 707.4.1-Fly Ash: Fly ash shall meet the requirements of ASTM C618, Class F or C when sampled and tested in accordance with the applicable Section of ASTM C311. Fly ash with an amount retained on the No. 325 (45 µm) sieve >34% but ≤40% shall be considered as meeting specification requirements provided either of the following criteria are met: ⅰ. 50% minimum reduction in mortar bar expansion when tested in accordance with ASTM C441. The alkali content of test mix shall be equal to or greater than the control mix. The weight of fly ash shall be 20-30 % of weight of cementitious materials. ⅱ. 0.1% maximum mortar bar expansion, at 16 days after casting, when tested in accordance with ASTM C1567. Very highly reactive aggregate (R3 Class from AASHTO R 80) shall be used as fine aggregate. The weight of fly ash shall be ≤ 35% of the weight of total cementitious materials. 707.4.2-Slag Cement : Slag cement shall conform to the requirements of AASHTO M 302. 707.4.3-Silica Fume Admixture: Silica Fume shall be supplied in the densified powder form and shall meet the requirements of AASHTO M 307. 707.4.4-Natural Pozzolans: Natural pozzolans shall conform to the requirements of ASTM C618, Class N. 707.5-LATEX ADMIXTURE: Formulated latex modifier shall be Dow Modifier A, Tylac 97 -314 (Thermoflex 8002), BASF Latex 1186 or Deco-Ray 4776. The manufacturer of these products shall certify that the latex being supplied is of equal formulati on to that supplied to the FHWA Turner -Fairbank Highway Research Station for initial approval. Other Styrene-Butadiene latex modifiers may be used provided they have been tested in accordance with and meet the acceptance criteria of the testing program outlined in Report No. FHWA-RD-78-35 of the Federal Highway Administration. The manufacturer shall certify that the latex being supplied meets the acceptance criteria used in the testing program. Only one brand shall be supplied. Samples taken at the job s ite shall contain a minimum of 46% solids in the latex when tested in accordance with MP 679.03.00. The latex admixture shall be agitated as necessary to prevent separation of the emulsion. It shall be maintained in storage within the temperature range of 35°F to 85°F. Admixture obtaining temperatures outside the foregoing limits shall be removed and replaced at no additional cost to the Division. 707.6-POLYETHYLENE COATED BURLAP FOR CURING CONCRETE: This material shall consist of burlap impregnated on one side with white opaque plastic film. The plastic film shall be securely bonded to the burlap. The film shall be clean and free o f imperfections. Acceptance will be based on visual inspection. 707.7-BURLAP CLOTH MADE FROM JUTE OR KENAF FOR CURING CONCRETE: The burlap cover shall be clean and free of defects. The cover shall provide a water retention blanket over the concrete. Acceptance will be based on visual inspection. 707.8-WATERPROOF PAPER FOR CURING CONCRETE: Waterproof paper shall consist of two sheets of kraft paper cemented together with bituminous material and reinforced with fiber. The top surface shall be white. Acceptance will be based on visual inspection. 707.9-LIQUID MEMBRANE-FORMING COMPOUNDS FOR CURING CONCRETE: Curing compounds shall conform to the requirements of ASTM C309, Type 2, Class A. All curing compound must be tested by NTPEP and shown to meet the specification listed in the paragraph above.
707.10 White Polyethylene Sheeting (Film) for Curing Concrete:
The sheeting shall be opaque white plastic film. The film shall be clean and free of imperfections. Acceptance will be based on visual inspection.
707.11 Epoxy Resin Protective Coating:
The material shall conform to the requirements of ASTM C881, Type III, Grades 1 or 2, Class B or C. Pigmentation shall be required in the sy stem so the cured coating shall conform to Federal Color Standard 595, No. 16357.
707.12 Concrete Sealer:
707.12.1 General: The material shall be a one component, water repellant penetrating
sealer, meeting the criteria listed in section 707.12.2. The material shall be capable of meeting the criteria with a single coat and shall not alter the color of the treated surfaces.
707.12.2 Acceptance: The Contractor shall furnish certified laboratory test data showing
the material meets the following performance requirements:
1.Absorption-ASTM C64 2 (non -air entrained concrete). Concrete should be proportioned and mixed in accordance with ASTM C672. Sealed concrete, under total immersion, will not exceed 1.0% absorption after 48 hours or 2.0% absorption after 50 days.
2.Scaling Resistance-ASTM C672. A rating of "No Scaling" after 100 cycles on the sealed concrete (non -air entrained concrete) a s compared to "Severe Scaling" on untreated concrete.
3.NCHRP 244, Series II-Cube Test 3.1 Weight Gain-not to exceed 25% of untreated cube. 3.2 Absorbed Chloride-not to exceed 25% of untreated cube.
4.NCHRP 244, Series IV-Southern Exposure 4.1 Absorbed Chloride-not to exceed 10% of untreated concrete.
707.13 Accelerating Admixtures for Concrete:
707.13.1 Acceptance Requirements for Approval of Accelerators: Accelerating
admixtures for concrete shall be non -chloride and shall be tested by NTPEP (National Transportation Product Evaluation Program). The NTPEP testing results shall meet the requirements of AASHTO M 194, Type C.
707.13.2 Performance Requirements for Concrete Accelerators:
707.13.2 1-The effects of using accelerating admixtures may vary widely with different
types of cement, cement from different mills, aggregate proportions, aggr egates from different sources and of different gradation, and changes in water-cement ratio. Therefore, no accelerator shall be used until the concrete of the specified class, designed in accordance with these Specifications and made with the ingredients proposed for use by the Contractor, including Type C admixtures as specified or permitted under this Specification, is shown to meet the requirements of AASHTO M 194 for compressive strength at ages 3, 7, and 28 days.
707.13.2 2-The mix shall contain the quantity of admixture recommended by the
manufacturer at the prevailing temperature.
707.13.3 Certification of Accelerating Admixtures: When a Contractor proposes to use
an approved accelerating admixture, the procedure set forth in subsection 707.2.4 shall apply.
707.13.4 Additional Test Requirements for Accelerating Admixtures (Optional):
Either prior to or at any time during construction, the Engineer may require the selected admixture to be tested further to determine its effect on the strength of the concrete. When so tested, the accelerator shall meet the requirements specified in subsection 707.13.2.
707.14 Water-Reducingand Accelerating Admixtures for Concrete:
707.14.1 Acceptance Requirements for Approval of Water -Reducing and
Accelerating Admixtures: Water-reducing and accelerating admixtures for concrete shall be tested by NTPEP (National Transportation Product Evaluation Program). The NTPEP testing results shall meet the requirements of AASHTO M 194, Type E.
707.14.2 Performance Requirements for Concrete Water-Reducing and Accelerating
Admixtures:
707.14.2 1-The effects of using water-reducing and accelerating admixtures may vary
widely with different types of cement, cement from different mills, aggregate proportions, aggregates from different sources and of different gradation, and changes in water-cement ratio. Therefore, no water -reducing accelerator shall be used until the concrete of the specified class, designed in accordance with these Specifications and made with the ingredients proposed for use by the Contractor, including Type E admixtures as specified or permitted under thi s Specification, is shown to meet the requirements of AASHTO M 194 for water reduction and compressive strength increases at ages 3, 7, and 28 days.
707.14.2 2-The mix shall contain the quantity of admixture recommended by the
manufacturer at the prevailing temperature.
707.14.3 Certification of Water -Reducing and Accelerating Admixtures: When a
Contractor proposes to use an approved water -reducing and accelerating admixture, the procedure set forth in 707.2.4 shall apply.
707.14.4 Additional Test Requirements for Water -Reducing and Accelerating
Admixtures (Optional): Either prior to or at any time during construction, the Engineer may require the selected admixture to be tested further to determine its effect on the strength of the concrete. When so tested, the water-reducing accelerator shall meet the requirements specified in 707.14.2.
707.15 Hydration Control Stabilizing Admixtures for Concrete:
707.15.1 Acceptance Requirements for Approval of Hydration Control Stabilizing
Admixtures: Water-reducing and accelerating admixtures for concrete shall be tested by NTPEP (National Trans portation Product Evaluation Program). The NTPEP testing results shall meet the requirements of AASHTO M 194, Type B or D.
707.15.2 Performance Requirements for Concrete Hydration Control Stabilizing
Admixtures:
707.15.2 1-The effects of using hydrat ion control stabilizing admixtures may vary
widely with different types of cement, cement from different mills, aggregate proportions, aggregates from different sources and of different gradation, and changes in water-cement ratio. Therefore, no hydration control stabilizing admixture shall be used until the concrete of the specified class, designed in accordance with these Specifications and made with the ingredients proposed for use by the Contractor, including hydration control stabilizing admixtures as specified or permitted under this Specification, is shown to meet the requirements of AASHTO M 194 for water reduction and compressive strength increases at ages 3, 7, and 28 days.
707.15.2 2-In order for a concrete mix design, containing a hydration control stabilizing
admixture, to be considered for the allowable concrete discharge time extension for excessive haul time, as outlined in Section 601.7, the additional following extended discharge time testing is required in that subject mix design. Upon completion of the mixing of at least one of the trial batches at the minimum cement factor, for the subject mix design, as required in MP 711.03.23, air content and slump tests in accordance wi th Section 601.4.1 shall be performed on that trial batch of plastic concrete. A test to establish the initial and final times of setting of the concrete mix shall also be performed, in accordance with ASTM C403. The air content and slump tests shall then be repeated at 45-minute intervals, until a period of 3-hours after the completion of mixing has elapsed. The value obtained by any of the air content tests during the 3 -hour period shall not vary, from the value obtained by the initial air content tes t, by more than 2.5 percentage points. The value obtained by any of the slump tests during the 3 -hour period shall not vary, from the value obtained by the initial slump test, by more than 1.75 inches. The results of all these tests shall be included, al ong with all the other information required in MP 711.03.23, when the subject mix design is submitted for approval. When more than one mix design, for the same Producer/Supplier, is submitted for approval on the same day, only one set of extended discharg e time tests, as outlined in paragraphs two through five of this sub -section, will be required for that entire group of mix designs. That one set of extended discharge time tests, for the subject group of mix designs, shall be performed on the mix design, in that group of mix designs, which has the highest cementitious material content. If the results of that set of extended discharge time tests meet the requirements of this sub-section, then all of the mix designs, in that group of mix designs submitted on that same day for that Producer/Supplier, shall be approved for use with the extended discharge time.
707.15.2 3-The subject concrete mix design, and the concrete mix used during
construction, shall contain the quantity of admixture recommended by the manufacturer at the prevailing temperature.
707.15.3 Certification of Hydration Control Stabilizing Admixtures: When a
Contractor proposes to use an approved hydration control stabilizing admixture, the procedure set forth in 707.2.4 shall apply.
707.15.4 Additional Test Requirements for Hydration Control Stabilizing
Admixtures (Optional): Either prior to or at any time during construction, the Engineer may require the selected admixture to be tested further to determine its effect on the strength of the concrete. When so tested, the hydration control stabilizing admixture shall meet the requirements specified in subsection 707.15.2.
707.16 Concrete Protective Coating Materials:
707.16.1 Acceptance: For initial approval, the manufacturer shall submit representative
samples, colors chip(s) and certified laboratory test data along with the Material Data Sheets on the batch of material that is going to be used on WVDOH’s projects to the Division of Materials for review, approval and placing on the Department’s List of Approved Materials. In addition, the Materials Division may require that a representative from the manufacturer of the product be present at the project site during the application of the concrete protective coating to provide guidance on the mixing (if any), application of the product, and surface preparation. If the initially accepted product has not been used on a WVDOH’s project for a period of two consecutive years, the product shall be removed from the Department’s List of Approved Materials. Any re-approval of a removed product shall comply with Subsection 707.16.1 Subsequent approval of an initially accepted product shall be based on the manufacturer’s submittal of a certification to the Materials Division on each batch of the product that is going to be used on WVDOH’s projects. Such a certification shall be stating that the said product passes the laboratory test requirements listed in this subsection. Tests listed herein ar e the minimum testing requirements to be met. When requested in writing, the Engineer may accept materials based on conformance to the same type of test but differing on minor procedural points. Attach copies of test procedures which differ from those st ated herein. In addition to the material, provide brochures or booklets containing detailed instructions and explanatory remarks about surface preparation, application procedures, and operations.
A.Freeze-Thaw Test. Cast and cure three concrete specimens no less than 4 by 6 by 6 inches. Moist cure specimens for 14 days and then dry in room air at 60° to 80°F for three (3) hours and remove. 1.) Immerse in water at room temperature 60° to 80°F for three (3) hours and remove. 2.) Place in cold storage at 5°F for one (1) hour and remove. 3.) Thaw at room temperature 60° to 80°F for one (1) hour. 4.) Repeat steps 1, 2, and 3 to complete a total of 50 cycles. At the end of 50 cycles of the Freeze/Thaw Test, ensure that the coated specimens show no visible defects.
B.Accelerated Weathering. Test according to ASTM G153. Apply at an application rate of 50± 10 ft2/gal. Test for 5,000 hours in an Enclosed Carbon Arc Weatherometer. Perform the test in 120 minutes cycles consisting of 102 minutes of light and 18 minutes of light and demineralized water. At the end of the exposure test, ensure that there are no checking, cracking, or loss of film integrity, and no oth er firm defects. The color difference after 5,000 hours shall be no more than five ΔE units.
C.Salt Spray Resistance. Apply the masonry coating to concrete at a rate of 50± 10 ft2/gal, and test the coating according to ASTM B117. Expose the coating to a f ive percent (5%) sodium coating chloride (salt) solution for 300 hours, and maintain it at 95°F during the period of exposure. Ensure that it shows no loss of adhesion or deterioration at the end of the 300 hours.
D.Fungus Growth Resistance . Ensure that th e protective coatings pass a fungus resistance test as described by the ASTM D3273. At the end of four weeks exposure there shall be no growth on the coatings.
707.17 Specific Performance Admixtures for Concrete:
707.17.1 Acceptance Requirements for Approval of Specific Performance
Admixtures: Specific performance admixtures for concrete shall be tested by NTPEP (National Transportation Product Evaluation Program). The NTPEP testing results shall meet the requirements of AASHTO M 194, Type S.
707.17.2 Performance Requirements for Concrete Accelerators:
707.17.2 1-The effects of using specific performance admixtures may vary widely with
different types of cement, cement from different mills, aggregate proportions, aggregates from different sources and of different gradation, and changes in water -cement ratio. Therefore, no specific performance admixture shall be used unt il the concrete of the specified class, designed in accordance with these Specifications and made with the ingredients proposed for use by the Contractor, including Type S admixtures as specified or permitted under this Specification, is shown to meet the requirements of AASHTO M 194 for compressive strength at ages 3, 7, and 28 days.
707.17.2 2-The mix shall contain the quantity of admixture recommended by the
manufacturer at the prevailing temperature.
707.17.3 Certification of Specific Performance Admixtures: When a Contractor
proposes to use an approved specific performance admixture, the procedure set forth in subsection 707.2.4 shall apply.
707.17.4 Additional Test Requirements for Accelerating Admixtures (Optional):
Either prior to or at any time during construction, the Engineer may require the selected admixture to be tested further to determine its effect on the strength of the concrete. When so tested, the accelerator shall meet the requirements specified in subsection 707.17.2.
707.18 Foaming Agent Admixtures:
The foaming agent admixtures shall meet the requirements of ASTM C869.
Referenced in this section
Sections that cite this one
- 707.3Water-Reducing Admixtures for Concrete
- 601Structural Concrete
- 707.15Hydration Control Stabilizing Admixtures for Concrete
- 707.14Water-Reducingand Accelerating Admixtures for Concrete
- 707.17Specific Performance Admixtures for Concrete
- 603Prestressed Concrete Members
- 623Pneumatically Applied Mortar Or Concrete (Shotcrete)
- 679Overlaying of Portland Cement Concrete Bridge Decks
Get an email when 707 changes
West Virginia revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: Standard Specifications for Roads and Bridges, 2023 Edition. Pages 811–822 of 1,006. View official source ↗