The aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Crushing value is a ... 1 Water bound macadam, sub-base course 50 2 Cement concrete, base course 45 3 i) WBM base coarse with bitumen surfacing
Aggregate for Surface and Base Courses. 3138.1 SCOPE. This Specification covers the quality of aggregates used in construction of aggregate surfaced roads, shoulders and dense graded base courses. 3138.2 REQUIREMENTS . A Aggregate Composition . The source of supply and quality of the material is subject to approval by the Engineer in accordance ...
CRUSHED AGGREGATE AND OTHER BASE COURSES PART 1 GENERAL 1.1 DESCRIPTION OF WORK A. This item shall consist of constructing a dense compacted base …
roads are the upper ones, primarily the base course, which distributes the loads applied by traffic to avoid overstressing of the weaker materials beneath it. In most cases the base course consists of a high quality aggregate produced by quarrying and crushing selected rock material.
CRUSHER RUN AGGREGATE Where either No. 25 or 26 aggregate is recommended, both gradations shall be shown on the plans and summaries. AGGREGATE BASE MATERIAL . Whenever a material usually used as a base course is used in the subbase position (reference Section 101 of VDOT's. Road and Bridge Specifications. for definitions of "Base
Aggregates: Aggregates for bases shall be crushed stone, crushed slag, crushed gravel or natural gravel that conforms to the quality requirements of AASHTO M147, except that the …
Base course Aggregate - Free download as PDF File (.pdf), Text File (.txt) or read online for free. This document provides specifications for basecourse aggregate used in road construction. It outlines testing requirements for source properties and production properties to ensure the aggregate meets standards. Source properties like crushing resistance, weathering quality and …
P-208, Aggregate Base Course Page 3 of 5 The base material shall be stockpiled, either at the plant or on the worksite, prior to placing and spreading on the prepared underlying course. (b) Materials of Proper Gradation. When the entire base course material from coarse to fine is secured in a uniform and well-graded condition and contains
A complete suite of characterization tests were conducted on 16 aggregate materials with laboratory samples consistently prepared for a mid-range dense-graded base course gradation. The tests included imaging-based aggregate particle shape analyses, moisture-density, resilient modulus, shear strength, and permanent deformation.
AGGREGATE BASE COURSE DESCRIPTION . 304.01 This work consists of furnishing and placing one or more courses of aggregate and additives, if required, on a prepared subgrade. MATERIALS . 304.02 Aggregate. The aggregates shall meet the requirements of subsection 703.03. Acceptance will be based on random samples taken from each lift.
A. Aggregate Base Course shall be a minimum of 3" thick compacted Class 6 Base Course as Specified in Section 32 11 23, installed at 95% relative compaction on top of subgrade. B. …
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 …
This document discusses material requirements and construction process for a base course using crushed rocks (CRR) and crushed stones (CRS). CRR and CRS are suitable aggregate materials that must meet certain strength and composition standards. The base course is constructed by spreading, compacting, and finishing the aggregate material to specified densities on top of a …
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.
The aggregate crushing value test is performed on coarse aggregates to determine their resistance to crushing under a gradually applied compressive load. ... These items include a steel cylinder that is 15 cm in diameter, along with a plunger and base plate. The cylinder is likely used to compact materials, such as soil or concrete, to a ...
PDF | On Dec 16, 2019, Ashebir Alyew Mamo published Determining the Physical Properties of Aggregate Products and its Suitability for Road Base Construction, Ethiopia | Find, read and cite all the ...
Aggregate Crushing Value = (B/A) X 100 Where A = weight of oven-dried sample B = weight in 'g' of fraction passing through 2.36 mm IS sieve. 6. Results The mean of the two results shall be reported 7. Video Aggregate Crushing Value Test 8. Download Download PDF
Construct a foundation course for a surface course or for other base courses, composed of crushed aggregate materials as described in this specification, in one or more courses, in …
The asphalt aggregate base course shall be maintained in a satisfactory condition until the work is accepted by the Engineer. Equipment used in the construction of an adjoining ... Fine aggregate passing the No. 4 sieve shall consist of fines from the coarse aggregate crushing operation. If necessary, fine aggregate may be added to produce the ...
Use an all-in-run aggregate/granular base course, mixed with the fine fraction, at the optimum moisture content (OMC). Ensure the sub-grade or sub-base reaches the desired compaction level before starting base course construction. Base Course and Specification and Construction and Method (1) Placing and Spreading
Include the aggregate types that are more susceptible to crushing such as limestone, dolostone, and recycled concrete aggregates. Select the materials to cover the upper and lower boundaries of gradation ranges covered by the National Road Research Alliance (NRRA) member states for base course and subbase materials.
The aggregate crushing value is defined as a ratio of the weight of fines passing the specified IS sieve ... However, as the stresses at the base and sub-base courses are low aggregates with lesser crushing strength may be used at the lower layers of the pavement. Indian Roads Congress and ISI have specified that the aggregate crushing value of ...
Crushing For grading other than Grading C, the following multipliers should be applied to crushing costs shown below for pit rock or quarry rock.
304 - AGGREGATE BASE COURSE (OP SPECIAL) 304.1 DESCRIPTION . This work shall consist of furnishing and placing aggregate base course in accordance with the following specifications and as shown on the plans. 304.2 MATERIALS a. Compaction Compaction requirements shall be based on the results of a test section constructed by the
A. Aggregate Base Course shall be a minimum of 3" thick compacted Class 6 Base Course as Specified in Section 32 11 23, installed at 95% relative compaction on top of subgrade. B. Make any corrections necessary to base furnished and installed under Section 31 23 00, Earthwork and Trenching and Section 32 11 23 Aggregate Base Course to bring ...
A. The aggregate base course shall be constructed to the width and section sho wn in the DRAWINGS. If the required compacted depth of base course exceeds six (6) inches, the base shall be constructed in two (2) or more layers of approximate equal thickness. The maximum compacted thickness of any one (1) layer shall not exceed six (6) inches. B.
AGGREGATE BASE COURSE PART 1 GENERAL 1.01 SECTION INCLUDES A. The WORK to be performed includes the preparation of the aggregate base course foundation; and the production, stockpiling, hauling, placing, and compacting of aggregate base course. 1.02 RELATED SECTIONS A. The following is a list of SPECIFICATIONS which may be related to …
Secondary aggregate base courses. Anticipated revisions to specifications. Preferred Aggregate Base Courses . Aggregate Description . Tables 1 and 2, which begin on page 5, compare the material characteristics of MnDOT's lass 5 aggregate and the preferred base course aggregate from eight of the nine responding states.
DPWH STANDARD SPECIFICATION Item 200 - Aggregate Sub-base Course Item Log in Join. 8.1 ITEM 200 and 201 - Aggregate Subbase and Base... Pages 75. Total views 100 ... CIEN-30073_BUILDING-SYSTEM-DESIGN.pdf. Solutions Available. Polytechnic University of the Philippines. CE 1001. ... Hard aggregates gives low crushing value, ...
Item 00250, for the full width of the base course, in lieu of removing and replacing deficient base course. The thickness of the supplemental layer of asphaltic concrete shall be as follows: BASE COURSE THICKNESS CORRECTION 1-3/4 to 2 2-1/4 to 2-1/2 1-1/2 230.6 Measurement. Crushed Aggregate Base shall be measured by the square yard of material,
SPECIFICATIONS FOR AGGREGATE FOR GRANULAR BASE COURSE . 900. 1 SCOPE . These Specifications govern all operations necessary for and pertaining to the production of aggregate for granular base course. 900. 3 MATERIALS . 3.1 Source of Supply . The Contractor shall provide the Engineer with at least six days advance notice of;