Special Finishes
1011.01 Curing Materials.
1011.01.1 Liquid Membrane-Forming Compounds: This
material shall comply with ASTM C309 and shall be from the Approved Materials List. Allowable types are Type 2 white-pigmented or Type 1-D, clear or translucent with a fugitive dye, as specified.
1011.01.2 Moist Cure Materials:
1011.01.2 1 Sheet Material: Use sheet materials for curing
concrete meeting the physical and performance requirements of ASTM C171.
1011.01.2 2 Burlap Cloth: Use burlap cloth made from Jute or
Kenaf complying with AASHTO M 182, Class 3.
1011.02 Admixtures.
1011.02.1 Physical Requirements: Use concrete admixtures from
the Approved Materials List, which comply with Table 1011-2 when tested in accordance with DOTD TR 224.
1011.02.2 Chemical Requirements: The contribution of chloride
ion resulting from the addition of admixtures to the concrete shall not exceed 0.02 pound per cubic yard of concrete, when tested in accordance with DOTD TR 643.
1011.02.3 Acceptance Testing: The admixture shall be tested by
analytical infrared (IR) spectroscopy in accordance with DOTD TR 610. The IR spectrum shall compare favorably to the standard IR spectrum of the original material tested and on file at the Materials and Testing Section. The percent solids by weight, determined in accordance with DOTD TR 524, shall not deviate more than ±10 percent from that of the original approved material and shall not exceed the manufacturer’s stated limits. Tests to determine rate of hardening, compressive strength or other properties may be made at any time during the work to ensure continued compliance with these specifications.
1011.03 SPECIAL FINISH FOR CONCRETE. Use material from the
Approved Materials List. The material shall provide a uniform-textured finish complying with these specifications. Follow the manufacturer’s recommendation for method of mixing, method of application, and rate of application, except that the rate shall not exceed 60 square feet per mixed gallon. Modifications to the manufacturer’s recommendations will not be permitted. Use a one -component coating system containing pigments, sand and resins. The coating shall contain fungicides to prevent the growth of mildew, mold, etc. Color and texture of the material when applied to the test panel shall closely match that of the standard "Louisiana Gray" color chip on file (similar to federal colo r # 36440 from Federal Standard 595C) at the Materials and Testing Section. For project samples, comply with Table 1011-1. Table 1011-1 Special Finish Sample Acceptance PROPERTY TEST METHOD SPECIFICATIONS ACCEPTANCE1 Density ASTM D1475 Target Value ±0.25 lbs/gal Viscosity ASTM D562 Target Value ±5 KU Dry to Touch ASTM D1640 Target Value ±10% Dry Through ASTM D1640 Target Value ±10% Solids percent ASTM D2369 Target Value ±2% Volatile percent ASTM D2369 Target Value ±2% Infrared Spectrum DOTD TR 610 2 1Target Values shall be established by the Materials Section upon qualification of the paint system. 2Standards for infrared spectrum shall be kept on file and compared to project samples for acceptance purposes. For source approval, comply with the following:
1.The average number of cycles to failure shall be not less than 50 cycles when tested in accordance with ASTM C666, Method A. Test specimens shall show no flaking, cracking, spalling or loss of bond.
2.The material shall be unaffected except fo r slight chalking or discoloration when exposed to 1000 hours of accelerated weathering using UV-B lamps in accordance with ASTM G154. Table 1011-2 Physical Requirements for Admixtures Property Test Method Water-Reducing High Range Water Reducing Set Accelerating Specific Performance Air Entraining Normal Set Set Retarding Normal Set Set Retarding Unit Water Content, Max. % of Control Min. % of Control Air Content, %, Total DOTD TR — 5 1 0 to 3 0 to 3 --- 0 to 3 --- 0 to 3 --- --- 0 to 3 --- --- --- Time of Setting, allowable deviation from control, hr:min. Initial: at least not more than Final: at least not more than Compressive Strength, Min. % of Control 1 Day 3 Days 7 Days 28 Days 6 Months 1 year Flexural Strength, Min. % of Control 3 Days 7 Days 28 Days Relative Durability Factor, Min. % of Control AASHTO T 197 DOTD TR AASHTO T 97 AASHTO T 161 — — — — — — — — — — — — — 1:00 earlier nor 1:30 later — 1:00 earlier or 1:30 later — — — — — — — — 1:30 later 3:30 later — 3:30 later — — — — — — — — — 1:00 earlier nor 1:30 later — 1:00 earlier or 1:30 later 1:30 later 3:30 later — 3:30 later 1:00 earlier 3:30 earlier 1:00 earlier — — — — 1:00 earlier 1:30 later 1:00 earlier 1:30 later — Section 1012 Vacant
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Source: Standard Specifications for Roads and Bridges, 2016 Edition. Pages 1060–1063 of 1,145. View official source ↗