Base Course Mix.....Type 2 (type 1 if approved by Engineer) ... percent by weight of crushed aggregate. The job- mix formula shall be within the limits specified above. The maximum permissible ... 200 Sieve (75 um) in Mineral Aggregates by Washing" and ASTM C 136, "Standard Method for Sieve Analysis of Fine and Coarse
2. Crushed aggregate base coarse (Compaction Gravel) shall be purchased per standard ton with a standard ton to weight 2,000 pounds for the purpose of this contract. Material shall be ordered in full truck load lots. 3. Contractor shall proceed with delivery of crushed aggregate base coarse (Compaction Gravel) upon 12 hour notice. 4.
ITEM P-209 CRUSHED AGGREGATE BASE COURSE. DESCRIPTION. 209-1.1 This item consists of a base course composed of crushed aggregates constructed on a prepared course in accordance with these specifications and in conformity to the dimensions and typical cross sections shown on the plans. MATERIALS. 209-2.1 . AGGREGATE.
2.04 HOT MIX ASPHALT BASE COURSE (BLACK BASE) A. Coarse Aggregate: Gravel or crushed stone, or combination thereof that is retained on No. 10 sieve, uniform in quality throughout and free from dirt, organic, or other injurious matter occurring either free or as coating on aggregate. Aggregate shall conform to ASTM C 33 except for gradation.
Consequently, the surface course (pavement or a well-graded crushed aggregate) and base course are the most seriously affected by high tire pressures.CE 55 may also be designated for ASTM 1557, the American Society of Testing and Materials code for density-moisture curves. Read more.
A. Aggregate base course shall be applied over the prepared sub grade or sub base and compacted in accordance with Section 26 of the Caltrans Standard Specifications. B. Aggregate base course shall have minimum uniform thickness after compaction of dimensions indicated. Where not indicated, compacted thickness shall be 6 inches. C.
209-5.1 Payment shall be made at the contract unit price per square yard for crushed aggregate base course. This price shall be full compensation for furnishing all materials, for preparing and placing these materials, and for all labor, equipment tools, and incidentals necessary to complete the item.
1.1 This specification covers the quality and grading of the following materials for use in the construction of subbase, base, and surface courses: sand-clay mixtures; gravel; stone or slag screenings; sand; crusher-run coarse aggregate consisting of gravel, crushed stone, or slag combined with soil mortar; or any combination of these materials. . The requirements are intended to cover ...
1.1 This specification covers crushed aggregate suitable for use in the construction of dry- or water-bound macadam base courses and bituminous penetration macadam base and surface courses of pavements. 1.2 The values stated in inch-pound units are to be regarded as standard. The SI equivalents shown in parentheses may be approximate. Keywords
Facility Item Code Name Standards Application Specifications Aggregates 3562 BALLAST AREMA GR 4 ASTM C33/C33M-13 Railroad ballast, vehicle traction control, leach fields, stabilization, dewatering, landscaping Appendix A-Image 1 4531 CDOT CLASS 6 BASE D2940/D2940M-15 Base course for roadways, gravel roadway surfacing, parking lot
30 June 2001. CHAPTER 8. AGGREGATE BASE COURSES. 1. USE OF AGGREGATE BASE COURSES. Aggregate base courses may be required for one or. more of the following reasons: distribution of load, provide drainage, protect from frost, provide uniform. bearing surface for the pavement surfacing, replace unsuitable soils, provide working platform, increase.
P-208 SPECIFICATION P–208. AGGREGATE BASE COURSE DESCRIPTION 208–1.1 This Work consists of a base course composed of hard, durable particles or fragments of crushed coarse aggregate blended with either binder and fine aggregate or filler. Construct it on a prepared underlying course in accordance with these Specifications and in conformance
Item P-209 crushed aggregate base course63 Кб. The fine aggregate shall have a minimum sand equivalent value of 35 when tested in accordance with ASTM D 2419. Sampling and Testing.The crushed aggregate base material shall be placed on the moistened subgrade in layers of uniform thickness with a mechanical spreader.