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Minimum aggregate impact value requirement for aggregate base course

  • FM 5-430-00-1 Chptr 5 Subgrades and Base Courses

    In addition to the gradation requirement, a base-course material must meet the same PI and LL requirements for a subbase material as indicated in Table 5-1. Material with a LL greater than 25 or a

  • CBR value for base-course in roadworks - Soil testing

    Nov 16, 2006· I would like to find out if an unsoaked CBR value can exceed for a base-course material: maximum size aggregate 37.5mmm and having a continuous grading curve, sourced from a borrow pit. Technical specifications impose a value of minimum 80% for base-course

  • SCHEDULE OF MINIMUM TEST REQUIREMENTS

    PART D - SUBBASE AND BASE COURSE . ITEMS OF WORK MINIMUM TEST REQUIREMENTS. Item 202 - Crush Aggregate Base Course Same tests as for Item 201 For every 1500 cu.m. or fraction thereof: 1-F, Fractured Face Item 203 - Lime Stabilized Road Mix Base Course

  • Aggregate Quality Requirements for Pavements

    Table 4-15. Aggregate gradation and quality requirements for a Class 2 aggregate material used as a base course material by California DOT (Caltrans). 56 Aggregate Quality Requirements for Pavements Texas DOT and Washington State DOT allow a maximum of 20% RAP by weight in unbound aggregate bases.

  • SECTION 02621 AGGREGATE BASE AND SUBBASE COURSES

    2. Graded Aggregate for Base Course Graded aggregate for base course shall meet the gradation and other requirements of ASTM D 2940 for bases with the following modifications. The liquid limit and plasticity index values shall not be greater than 30 and 6, respectively. Soil fines passing the No. 200 sieve may be tolerated.

  • Aggregates for Concrete

    amount of air, water, cement, and fine aggregate (that is, the mortar fraction) should be about 50% to 65% by absolute volume (45% to 60% by mass). Rounded aggre-gate, such as gravel, requires slightly lower values, while crushed aggregate requires slightly higher values. Fine aggregate content is usually 35% to 45% by mass or

  • ITEM P-208 AGGREGATE SURFACE COURSE

    The aggregate shall be free from vegetation, lumps, or excessive amounts of clay and other objectionable substances. The coarse aggregate shall have a minimum degradation value of 45 when tested according to ATM 313. The aggregate shall have a percent of wear not more than 50 at 500 revolutions as determined by

  • SECTION 301 AGGREGATE SURFACING

    301.03.4 Crushed Aggregate Course . When crushed aggregate course is a bid item, construct the aggregate surfacing section to the specified typical cross section and profile grade. Select one of the following two options to construct the aggregate section: 1. Full depth crushed base course. 2.

  • 32 11 23 - Aggregate Base Course

    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.

  • Determination of Aggregate Impact Value - CivilArc

    Jan 12, 2017· The aggregate impact value is a calculation of the resistance to abrupt impact, bang or shock, which may vary from its resistance to steadily, applied compressive weight. Procedure: The test specimen includes the aggregates of size

  • 32 11 23 Aggregate Base Course - MHFD

    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.

  • ITEM P-209 CRUSHED AGGREGATE BASE COURSE

    ITEM P-209 CRUSHED AGGREGATE BASE COURSE . DESCRIPTION . 209-1.1. This item consists of a base course composed of crushed aggregate constructed on a prepared course in accordance with these Specifications and to the dimensions and typical cross -sections shown on the Plans. MATERIALS . 209-2.1 CRUSHED AGGREGATE BASE.

  • BASE MATERIALS SPECIFICATIONS - Kerbstones

    Physical requirements of Coarse Aggregates for Wet Mix Macadam for Sub-base / Base Course: 1. Los Angeles Abrasion Value: 40 % (Maximum) or Aggregate Impact Value: 30 % (Maximum) 2. Combined Flakiness and Elongation Indices (Total): 30 % (Maximum)

  • 32 11 23 - Aggregate Base Course

    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.

  • NORTH CAROLINA DEPARTMENT OF TRANSPORTATION

    Aggregate Base Course (ABC) - When ABC is placed on the roadway as part of the pavement structure it is defined in the Standard Specifications as a base composed of an approved aggregate material hauled to the road, placed on the road, mixed, compacted, and shaped to conform to the lines, grades, depths, and

  • 321123 - Aggregate Base Course

    Density of in-place compacted aggregate base course will be measured in accordance with ASTM D2922. Surface Tolerance: The finished top of base course, when tested with a Contractor furnished 12 foot straightedge, shall not vary from the testing edge by more than 0.04 foot at any point, and shall be within 0.04 foot of specified grade.

  • 250+ TOP MCQs on Testing of Aggregates and Answers

    Clarification: The aggregate crushing value provides a relative measure of a maximum value of 40%age is allowed for WBM base course in Indian conditions. 7. Aggregates to be used for wearing course, the impact value shouldnt exceed _____ percent. a) 30 b) 35 c) 40 d) 25 Answer: a

  • Determination of Aggregate Impact Value - CivilArc

    Jan 12, 2017· The aggregate impact value is a calculation of the resistance to abrupt impact, bang or shock, which may vary from its resistance to steadily, applied compressive weight. Procedure: The test specimen includes the aggregates of size ranging from 10.0 mm 12.5 mm. Aggregates can be dehydrated by warming them at temperatue of 100-110° C for a

  • Question is If aggregate impact value is 20 to 30

    Question is If aggregate impact value is 20 to 30 percent, then it is classified as, Options are (A) exceptionally strong, (B) strong, (C) satisfactory for road surfacing, (D) unsuitable for road surfacing, (E) , Leave your comments or Download question paper.

  • AGGREGATE BASE AND SURFACE COURSE ITEMS

    This item consists of a recycled asphalt aggregate base course resulting from the inplace full - depth reclamation (FDR) of the existing pavement section (asphalt wearing surface and aggregate base), plus mechanical stabilization with additional aggregate or chemical stabilization with Portland cement, or asphalt emulsion, when shown on the plans.

  • IS 6579 (1981): Coarse Aggregate for Water Bound Macadam

    construction of sub-base course also. The requirement of abrasion value, impact value and flakiness index ofsuch aggregates for use as sub­ base.hal been added and the size and grading of the WBM ag~rf'gatel modified, depending on the sieve designation of IS: 460 ( Part I )_ 1978·. A requirement for water absorption has also been included.

  • Aggregate Impact Value Test, Procedure, Result & Standards

    May 21, 2020· Aggregate impact value is the ratio of the weight of the fraction passing through 2.36 mm (weight W2) by the total weight of the sample (weight W1 + W2). Aggregate Impact Value = (W2/ (W1+W2)) * 100 = 80 gm / 300 gm = 26.67 (Impact Value)

  • Aggregate impact and - SlideShare

    Feb 08, 2012· AGGREGATE IMPACT TEST TABLE 12.1 Maximom Allowable Impact Value of Aggregate in Different Types of Pavement Material/Layers Aggregate impact value, maximum, % Water bound macadam (WBM). sub-base course Cement concrete, base course (as per 151) (i) WBM base course with bitumen surfacing (ij) Built-up spray grout, base course Bituminous macadam

  • GRADED AGGREGATE BASE

    GRADED AGGREGATE BASE. 2041 Description. Construct a base course composed of graded aggregate. 2042 Materials. Use graded aggregate material, produced from Department approved sources, which yields a satisfactory mixture meeting all the requirements of these Specifications after it has been crushed and processed as a part of the mining operations.

  • 02/21 Materials and Testing Section Qualification

    Samples of aggregate for source approval shall be taken from the finished product in accordance with AASHTO Designation T_2. For coarse aggregate, a sample weighing a minimum 200 lb. will be required for the laboratory evaluation. For fine aggregate a 100 lb. sample will be required. Samples should be graded to

  • SIEVE ANALYSIS OF FINE AND COARSE AGGREGATE

    Requirements, identifies the basic appropriate test method. When materials are not listed in Table 1, Base Course Aggregate TR 112 & TR 113 Method B Stone Base Course Aggregate TR 112 & TR 113 Method C aggregate, multiply the values shown in Table 1 by 0.5. DOTD TR 113-15 Rev. 12/15 Page 6 of 19 Method A TABLE 1 representative

  • 02621-1 of 9 SECTION 02621 AGGREGATE BASE AND

    2. Graded Aggregate for Base Course Graded aggregate for base course shall meet the gradation and other requirements of ASTM D 2940 for bases with the following modifications. The liquid limit and plasticity index values shall not be greater than 30 and 6, respectively. Soil fines passing the No. 200 sieve may be tolerated.

  • Chapter 4: Construction Details, Section 26: Aggregate

    Section 26 Aggregate Bases 4-2601 General. This section provides guidelines for inspecting aggregate bases for work specified under Section 26, Aggregate Bases, of the Standard Specifications.. Aggregate base is designated as Class 2 or Class 3.

  • AGGREGATE IMPACT VALUE TEST-10+ IMPORTANT NOTES TO

    Jul 16, 2014· Aggregate impact value test gives an indication of aggregates toughness property (i.e. property of a material to resist impact) Aggregate impact values are used to classify the stone aggregates with respect to toughness property as given below. Aggregate impact value (%) Toughness Properties <10 Exceptionally tough / Strong 10 20 Very tough / Strong []

  • 4 Aggregate Specifications and Requirements

    The total blended aggregate from the fine and coarse aggregates, and recycled materials used in HMA are required to meet the fine aggregate angularity (FAA) requirements of Section 904.02(b). The procedure for determining the FAA value is described in Method A of AASHTO T 304.

  • 7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR USE IN

    Sep 12, 2015· Aggregate impact value = (W1/W2)*100. Aggregates to be used for wearing course, the impact value shouldnt exceed 30 percent. For bituminous macadam the maximum permissible value is 35 percent. For Water bound macadam base courses the maximum permissible value defined by IRC is 40 percent. Also read: Impact Value Test Procedure of Aggregates. 4.

  • Standard Specification for Concrete Aggregates1

    portions of fine and coarse aggregate and the addition of blending aggregate sizes if required or approved. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 The text of this standard references notes and footnotes which provide explanatory material.

  • SECTION 300 AGGREGATE PAVEMENT AND BASES

    301.07 Checking and Correcting Base The top of each aggregate course shall be checked transversely to the cross 80 section and all deviations in excess of 1/2 in. shall be corrected. If additional aggregate is required, the course shall be remixed and re-compacted. 301.08 Priming A prime coat, when required, shall be in accordance with 405.

  • MICHIGAN DEPARTMENT OF TRANSPORTATION BUREAU OF

    Crushed Aggregate Base Course DESCRIPTION fine aggregate shall have a minimum sand equivalent value of 35 when tested in accordance with ASTM D2419. P-209, Crushed Aggregate Base Course Page 2 of 5 TABLE 1. REQUIREMENTS FOR GRADATION OF AGGREGATE Sieve Size

  • 32 11 17 - Aggregate Subbase Courses

    A Aggregate base course for pavements is specified in Section 32 11 23 - Aggregate Base Courses. 1.03 CLASSIFICATION A. Aggregate subbases are designated as Class 1, Class 2, or Class 3. The class of aggregate subbase shall be indicated. 1.04 MEASUREMENT AND PAYMENT

  • Cement Stabilized Aggregate Base

    4.1.2.1 Use water meeting the requirements as specified in Subsection 701.2.11. 4.1.3. Aggregate 4.1.3.1 Use aggregate meeting the requirements of Macadam Base Course or Marine Limestone Base Course as specified in Subsection 305.2with one exception. Ensure that the gradation for each material meets the following requirements.

  • AASHTO Pavement Thickness Design Guide

    Asphalt Treated Base Class I 0.34 4 Bituminous Treated Aggregate Base 0.23 6 Asphalt Treated Base Class II 0.26 4 ColdLaid Bituminous Concrete Base 0.23 6 Cement Treated Granular (Aggregate) Base. 0.20 6 SoilCement Base 0.15 6 Crushed (Graded) Stone Base 0.14 6 Macadam Stone Base 0.12 6

  • compaction for aggregate basecourse/sub-base

    Feb 03, 2012· Have seen required for aggregate basecourses, and due to frequency of testing and overall quality control of material it is not difficult to acheive with the regional quarries we have in this area. I agree 98% is reasonable for crushed aggr. base courses that are with-in a pretty rigid spec. base.

  • SECTION 02621 AGGREGATE BASE AND SUBBASE

    2. Graded Aggregate for Base Course Graded aggregate for base course shall meet the gradation and other requirements of ASTM D 2940 for bases with the following modifications. The liquid limit and plasticity index values shall not be greater than 30 and 6, respectively. Soil fines passing the No. 200 sieve may be tolerated.