Coarse Aggregate. Coarse Aggregate for concrete blocks shall be good, hard, clean aggregate from approved quarries. It shall be free from all decomposed materials and shall be graded up to 10 mm and all as described for coarse aggregate in Concrete Work.
Coarse Aggregate. Coarse aggregate shall be washed, hard, tough and durable screened gravel or crushed stone conforming to the ASTM Standard Specifications for Concrete Aggregates, Designation C33 and the additional requirements specified herein. Coarse aggregate shall have not more than five percent by weight of deleterious substances and soft fragments. Unless otherwise approved, aggregate shall be well graded and shall conform to the grading requirements for coarse aggregates for nominal size 1 inch to No. 4. No coarse aggregate shall be used if it contains more than one percent of silt or which shows a color darker than Plate 1 when tested as above specified for fine aggregate. The weighted average loss when coarse aggregate is subjected to five cycles of the soundness test using magnesium sulfate shall not exceed 14 percent.
Coarse Aggregate a. Coarse aggregate for concrete, except as noted above, shall conform to I.S. 383. This shall consist of crushed stone and shall be clean. and free from elongated, flaky or laminated pieces, adhering coatings, clay lumps, coal residue, clinkers, slag, alkali, mica, organic matter or other deleterious matter.
Coarse Aggregate. The coarse aggregate for concrete shall be natural gravel or crushed stone. It shall consist of hard, dense, durable uncoated rock fragments and shall meet the requirements of B.S. 882. Coarse aggregate for reinforced concrete shall be either graded aggregate or made up of a number of single size aggregates, with the largest particles not exceeding the following sizes:
Coarse Aggregate. The required grading shall be obtained by using 100 percent 3/8” coarse aggregate.
Coarse Aggregate. Unless, otherwise specified or ordered, only ¾” (20 mm) nominal size crushed aggregate shall be used as coarse aggregate for concreting purpose in slabs, beams, columns, in superstructure and foundations as per IS: 383 – 19
Coarse Aggregate. Coarse aggregate for all cement concrete work shall be graded broken / crushed trap stone / basalt / granite stone obtained from approved quarries as specified in Clause 4.4 of MES Schedule. Mixture of the two types of aggregates will not be allowed.
Coarse Aggregate. Coarse aggregate stockpiles must have no more than 20% material passing the No. 8 sieve. Aggregates from sources listed in the Department’s Bituminous Rated Source Quality Catalog (BRSQC) are preapproved for use. Use only the rated values for hot-mix listed in the BRSQC. Rated values for surface treatment (ST) do not apply to coarse aggregate sources used in hot-mix asphalt. For sources not listed on the Department’s BRSQC: build an individual stockpile for each material; request the Department test the stockpile for specification compliance; and once approved, do not add material to the stockpile unless otherwise approved. Provide aggregate from non-listed sources only when tested by the Engineer and approved before use. Allow 30 calendar days for the Engineer to sample, test, and report results for non-listed sources. Provide coarse aggregate with at least the minimum SAC shown on the plans. SAC requirements only apply to aggregates used on the surface of travel lanes. SAC requirements apply to aggregates used on surfaces other than travel lanes when shown on the plans. The SAC for sources on the Department’s Aggregate Quality Monitoring Program (AQMP) (Tex-499-A) is listed in the BRSQC.
Coarse Aggregate. (a) The Contractor shall be responsible for testing the coarse aggregates to establish conformance to these specifications, and the results of these tests shall be provided to the Contract Administrator if requested. All aggregates shall comply with CAN/CSA A23.1.
Coarse Aggregate. (a) The maximum nominal size of coarse aggregate shall be sized to suit the Contractor‟s mix design. Gradation shall be in accordance with CAN/CSA A23.1, Table 11, Group
