specifications - FAACO - Federal Aviation Administration Contract ...

E. WATER:FTWIC-2235June, 20091. Clean and free from injurious amounts of oil, acid, alkali, salt, organic matter, orother deleterious substances. Water suitable for drinking or for ordinaryhousehold use shall be accepted for use without testing.2. Water for concrete from shallow, muddy, or marshy sources shall not be used.3. When comparative tests are made with water of known, satisfactory quality, inaccordance with ASTM C-87, any indication of unsoundness, marked change inthe time of set, or reduction of more than five (5%) percent in mortar strengthshall be cause for rejection.F. FINE AGGREGATE:1. Washed and screened natural sands or sands conforming to ASTM C-33. Thegradation in ASTM C-33 for air entrained concrete is:SIEVE SIZE PERCENT RETAINED PERCENT PASSING3/8" 0 100#4 0 - 5 95 - 100#8 0 - 20 80 - 100#16 15 - 50 50 - 85#30 40 - 75 25 - 60#50 70 - 90 10 - 30#100 90 - 98 2 - 102. Fine aggregate shall have not more than 45% percent retained between any two(2) consecutive sieves. Its fineness modulus, as defined in ASTM C-125, shallbe not less than 2.3 nor more than 3.1.G. COARSE AGGREGATE:1. Crushed stone or gravel conforming to ASTM C-33, in the gradation sizespecified.2. For gradation size number 467, a maximum aggregate size of 1-1/2" is:SIEVE SIZE PERCENT PERCENTSQUARE OPENING RETAINED PASSING2" 0 1001-1/2" 0 - 5 95 - 1003/4" 30 - 65 35 - 703/8" 70 - 90 10 - 30No. 4 95 - 100 0 - 503300-13