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<br /> • <br />Grade 3: Retained on 3/4" sieve. .0 <br />Retained on 5/8" sieve. .0-2 <br />Retained on 1/2" sieve. .20-35 <br />Retained on 3/8" sieve. 85-100 <br />Retained on 1/4" sieve. 95-100 <br />Retained on No. 10 sieve 99-1-0 <br />Grade 4: Retained on 5/8" sieve. 0 <br />Retained on 1/2" sieve. 0-2 <br />Retained on 3/8" sieve. 20-35 <br />Retained on No. 4 sieve .95-100 <br />Retained on No. 10 sieve. .99-100 <br />Grade 5: Retained on 3/8" sieve. 0 <br />Retained on I/4'-' sieve. 0-2 <br />Retained on No. 10 sieve. .99-100 <br />The aggregate shall not contain more than 1.0 percent by weight of <br />fine dust, clay-like particles and/or silt present when tested in <br />accordance with Test Method Tex-217-F, part 2. <br />Measurement and Payment. Aggregates will be measured and paid for <br />in accordance with the governing specifications for the items of <br />construction in which these materials are used. <br />ITEM 303 - <br />U <br /> <br />AGGREGATE FOR SURFACE TREATMENTS <br />(Lightweight) <br />Description. This item establishes the requirements for lightweight <br />aggregates to be used in the construction of surface treatments. <br />Materials. Aggregates shall be composed predominantly of lightweight <br />cellular and granular inorganic material produced by fuzing raw shale <br />or clay in a rotary kiln under intense heat into predominantly amorp- <br />hous silicate. All aggregate for use on this project shall be pro- <br />duced from the same plant and source. <br />The dry loose unit weight of coarse lightweight aggregates shall not <br />be less than 35 nad shall not exceed 55 poungd per cubic foot unless <br />otherwise specified on the plans. If the unit weight of any shipment <br />of lightweight aggregate differs by more than 4 percent from that of <br />the sample 'submitted for acceptance tests, the aggregates in the ship- <br />ment may be rejected. Tests shall be in accordance with Test Method <br />Tex-404-A, Part C. Ttie percent of wear, as determined by Test Method <br />Tex-410-A shall not exceed 35 percent. <br />Ttie aggregate Freeze Thaw Loss shall not exceed 7 percent when tested <br />in accordance with Texas Test Method Tex-432-A (Tentative). <br />The Pressure Slalcing Value shall not exceed 4 percent when tested in <br />accordance with Test Method Tex-431-A, (Tentative). <br />(11) <br />