805 Page 514805 MATERIALS FOR POLYMER CHIP SEALS
805.1POLYMER
Polymer will be a two component polymer consisting of a base component and a hardener. Both components will be supplied in tightly sealed undamaged containers. The containers will be marked to identify each component and will be clearly labeled with product name, mixing instructions and proportions, recommended storage temperature, lot number, batch number, date of manufacture and quantity contained. The polymer will be one of the polymers from the Department’s Approved Products List or as approved by the Department’s Bridge Construction Engineer.
805.2COVER AGGREGATE
The cover aggregate will be processed washed and dried dark grey or black colored aggregate. Washing will remove dust covering the aggregate. Recycled cover aggregate will not be used. Cover aggregate will conform to the following: A.The Mohs hardness must be 6.0 minimum. B.The gradation will conform to the following: Sieve Size Percent Passing #4 100 #8 30 – 75 #16 0 – 5 #30 0 – 1 C.The maximum aggregate moisture at the time of application will not exceed 0.5%. D.The aggregate will be supplied in waterproof bags and will be stored in a dry, moisture-free atmosphere. The aggregate will be fully protected from any contaminants on the job site and will be stored so as not to be exposed to rain or other moisture sources. Materials will remain adequately covered and protected from contamination throughout the project. Any material not adequately covered or found to be contaminated will not be used. E.The Contractor will submit a sieve analysis for the processed washed and dried aggregate and documentation of the Mohs hardness with the certified test reports. No field samples for sieve analysis or hardness will be required. 810 Page 515810 MASONRY MORTAR SAND AND EPOXY RESIN MORTAR SAND
810.1MASONRY MORTAR SAND
A.General: Aggregate for use in masonry mortar will consist of natural sand or manufactured sand. Manufactured sand is the product obtained by crushing stone, gravel, or air cooled iron blast furnace slag specially processed to assure suitable particle shape as well as gradation. B.Gradation: Percent Passing Sieve Size Natural Sand Manufactured Sand #4 100 100 #8 95 to 100 95 to 100 #16 70 to 100 70 to 100 #30 40 to 75 40 to 75 #50 10 to 35 20 to 40 #100 2 to 15 10 to 25 #200 - - - 0 to 25.0 Note: Not more than 50% may be retained between any two consecutive sieves listed. Not more than 25% may be retained between the #50 and #100 sieves. C.Deleterious Substances: The amount of deleterious substances will not exceed the following limits by dry weight: 1.Clay lumps and friable particles ........................................................................... 1.0% 2.Lightweight particles having a specific gravity of less than 1.95.......................... 0.5% D.Soundness: When the fine aggregate is subjected to 5 cycles of the sodium sulfate soundness test, the weighted loss will not exceed 10% by weight. E.Organic Impurities: The aggregate will be free of injurious amounts of organic impurities. Except as herein provided, aggregates subjected to the test for organic impurities and producing a color darker than the standard will be rejected. Aggregate failing in the test may be used provided that the principally due to the presence of small quantities of coal lignite, or similar discrete particles. Aggregate failing the colorimetric test may be used provided that, when tested for the effect of organic impurities on strength of mortar, the relative strength at 7 and 28 days (when calculated in accordance with Section 10 of AASHTO T 71, the Organic Impurities in Fine Aggregate on Strength of Mortar), is not less than 95%.
810.2EPOXY RESIN MORTAR SAND
A.General: The aggregate will be silica sand.