790 Page 510790 WATER FOR USE IN PORTLAND CEMENT CONCRETE PORTLAND CEMENT CONCRETE Water used in Portland Cement concrete and cement stabilization will be clean and free of oil, salt, acid, alkali, sugar, vegetation, effluent from a sewage disposal plant, and other substances detrimental to the finished product. Water containing suspended matter will be checked for total solids. The total solids will not exceed 50,000 parts per million. Water will be tested for pH and dissolved solids. The pH will be no less than 6.0 or more than 8.6. Maximum dissolved solids will be no more than 2,500 parts per million. Testing: Total Solids ............................................................................................. ASTM C1603 Dissolved Solids ............................................................................................... SD 415 pH.................................................................... Manufacturer’s instructions with meter 800 Page 511800 FINE AGGREGATE FOR USE IN PORTLAND CEMENT CONCRETE
800.1GENERAL REQUIREMENTS
The fine aggregate will consist of natural sand or, subject to approval, other inert materials with similar characteristics; or combinations having hard, strong, durable particles. Fine aggregate from different sources will not be mixed or stored in the same pile or used alternately in the same class of construction or mix, without permission from the Engineer.
800.2SPECIFIC REQUIREMENTS
A.Deleterious Substances: The amount of deleterious substances will not exceed the following limits by dry weight: Clay lumps ..................................................................................................... 0.5% Coal and lignite .............................................................................................. 0.3% Particles Less Than 1.95 Specific Gravity ..................................................... 1.0% Other deleterious substances (such as alkali, mica, coated grains, soft and flaky particles) ..................................................... 1.0% The maximum amount of all deleterious substances listed above will not exceed 2.0% by dry weight. B.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. When Class M concrete fine aggregate is subjected to 5 cycles of the sodium sulfate soundness test, the weighted loss will not exceed 12% by weight. C.Organic Impurities: The fine aggregate will be free from injurious amounts of organic impurities. Aggregates subjected to the colorimetric test for organic impurities and producing a color darker than the standard number 3 will be rejected. Should the aggregate show a darker color than samples originally approved for the work, the aggregate will not be used until tests have been made to determine whether the increased color is indicative of an injurious amount of deleterious substances. D.Alkali-Silica Reactivity (ASR) Requirements: When specified in the plans, the following items will apply. Fine aggregates from sources that have not been tested by the Department will be submitted to the Department’s Materials and Surfacing Central Materials Laboratory for ASR testing 30 days prior to performing the concrete mix design. ASR testing will be performed in accordance with ASTM C1260, except that the gradation of the material used for testing will be as produced from the source. The fine aggregate will only be sampled at the source by a Department representative or in the presence of a Department representative.