798 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 ft 2/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. 799 707.18 -FOAMING AGENT ADMIXTURES : The foaming agent admixtures shal l meet the requirements of ASTM C869. 800 SECTION 708 JOINT MATERIALS 708.1 -PREFORMED EXPANSION JOINT FILLER FOR CONCRETE : 708.1.1 -Nonextruding and Resilient Nonbituminous Type: The material shall conform to the requirements of AASHTO M 153. The sampling frequency shall be on the basis of one sample per each day of a manufacturers production for each thickness. 708.1.2 -Nonextruding and Resilient Bituminous Type: The material shall conform to the requirements of AASHTO M 213. The sampling frequency shall be on the basis of one sample per each day of a manufacturer s production for each thickness. 708.2 -PREFORMED ELASTOMERIC JOINT SEALS; LUBRICANT -ADHESIVES : 708.2.1 -Joint Seals for Concrete Pavements: This material shall meet th e requirements of AASHTO M 220. The lubricant -adhesive shall be of the type recommended by the seal manufacturer. 708.2.2 -Joint Seals for Bridges: Multiple web design and strip seals shall meet the requirements of AASHTO M 297. The compression -deflection and recovery tests for strip seals are deleted. The lubricant -adhesive shall be of the type recommended by the seal manufacturer. The strip se al gland shall be delivered to the jobsite in lengths suitable for continuous one piece installation for each individual expansion joint. Field splicing of a strip seal gland is not permitted. Special conditions such as doglegs, tees, and crosses shall b e shop fabricated in a mold under heat and pressure. 708.3 -JOINT AND CRACK SEALANT, HOT -POURED FOR CONCRETE AND ASPHALT PAVEMENTS : This material shall m eet the requirements of ASTM D6690 , and shall be evaluated by AASHTO National Transportation Product Evaluation Program ( NTPEP ). Unless otherwise specified, Type II sealant shall be used. 708.4 -SILICONE JOINT SEALANT; JOINT BACK -UP MATERIAL : 708.4.1 -Silicone Joint Sealant: 708.4.1.1 -General Requirements: Silicone sealant shall be furnished in a one part formulation. The compound shall be compatible with the surface to which it is applied. Acid cure sealants are not acceptable for use on concrete. Silicone sealants shall be of the following types: Type I-A low modulus non -sag silicone for use in sealing horizontal and sloping joints in Portland cement concrete pavements. Tooling is required. Type II -A very low modulus self-leveling silicone used to seal horizontal joints in Portland cement concrete pa vements. Type III -An ultra-low modulus self-leveling silicone used to seal horizontal joints in Portland cement concrete pavements. It can also be used to seal joints between Portland cement concrete pavement and asphalt concrete shoulders. 801 708.4.1.2 -Test Requirements: The sealant shall meet the following requirements , and shall be evaluated by AASHTO National Transportation Product Evaluation Program (NTPEP ). Test Method Test Type I Type II Type III ASTM D2202 Flow 0.3 In ch Max Self-Leveling Self-Leveling ASTM C679 Tack Free Time 1.5 Hours Max Manufacturer Note 1 Skin Over Time 2 Hours Max 2 Hours Max ASTM D412 Die C Notes 2 & 3 Modulus @ 150% Elongation 45 PSI Max 40 PSI Max 15 PSI Max ASTM D412 Die C Notes 2 & 3 Elongation 500% Min 500% Min 500% Min ASTM D3583 Notes 2, 3, 4, 5 Adhesion to Concrete No Failures @ 200% Elongation Min No Failures @ 200% Elongation Min No Failures @ 200% Elongation Min ASTM C719 Note 6 Movement Capability 10 Cycles @ ± 50% No Adhesive or Cohesive Failures No Adhesive or Cohesive Failures No Adhesive or Cohesive Failures ASTM C793 Notes 2 & 3 Accelerated Weathering 5,000 Hours No Cracking No Cracking No Cracking Note 1: The manufacturer shall verify that the sealant will have a skin over time within the time limitations under field conditions. Note 2: Cure Temperature 77° ± 3°F at 50 ± 5% Relative Humidity. Note 3: Cure Time 21 Days Maximum. Note 4: Specimens shall be 0.5 in ch x 0.5 in ch x 2.0 in ch Note 5: Type III material shall also dem onstrate adhesion to asphalt blocks. Note 6: Type I material shall have movement capability 10 cycles @ +100 -50%. 708.4.1.3 -Acceptance: Manufacturers of silicone joint sealants shall submit certified test data during the first calendar quarter of each year. The testing shall be performed by an independent testing laboratory. The test data must demonstrate that all requirements of the specifications are met. Only those sealants which have been evaluated and ap pear on the Division's approved list can be used on a project. Manufacturers are responsible for quality control of their product and the submission of test data in a timely manner in order to be considered for and/or continue to have their product on the approved list. 708.4.2 -Joint Back -Up Material: Joint back -up material shall be compatible with the sealant. The material shall be the correct size to fit tightly in the joint to resist movement and to prevent the sealant from moving past the back -up material to the bottom of the joint. 708.5 throug h 708.8: Blank 802 708.9 -BITUMEN SEALANT : Bitumen Sealant used as a joint sealer for concrete and masonry shall meet the requirements of ASTM C990.
708.10 Waterstops (Elastomer Material ):
All waterstops shall be produced by a molded or extrusion process such that, as supplied for use, they will be dense, homogenous, and free from holes an d other imperfections. The cross section of the waterstop shall be uniform along the length and shall be symmetrical transversely so that the thickness at any given distance from either edge of the waterstop will be uniform. One three (3) foot sample shall be furnished for each 1,000 f eet, or fraction thereof, of each size of waterstop material. The waterstops shall conform to the requirements in Table 708.10.1 for the polyvinyl chloride waterstops and Table 708.10.2 for rubber waterstops. TABLE 708.10.1 Polyvinyl Chloride Waterstops Property Value Test Method Tensile Strength, Die “C”, psi (Mpa) 1,400 (9.6) min. ASTM D412 Ultimate Elongation, Die “C”, percent 280 min. ASTM D412 Cold Bend Test No Cracking ** ** The cold bend test shall be made by subjecting three full -width, one -inch long sample specimens to a temperature of 20 °F for two hours. The specimen shall then be bent 180 ° around a ½ inch mandrel. TABLE 708.10.2 Rubber Waterstops Property Value Test Method Tensile Strength, Die “C”, psi 2,000 min. ASTM D412 Ultimate Elongation, Die “C”, percent 360 min. ASTM D412 Shore Durometer Hardness, Type A 60-85 ASTM D2240 Absorption of Water, by Weight, percent 5 max. ASTM D570 Weight per linear ft. 0.67 lb. min. --------
Source: West Virginia Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 820–824 of 1,006.