standards of grading aggregate of base and subbase in chile

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  • 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

  • Sub-base Aggregates - pavingexpert

    Grading Envelope for DTp1 / 803 aggregate. A variety of Primary (freshly quarried) and Secondary (recycled) aggregates can be used, but there are specific requirements about the quality of the aggregate, moisture content, and, most importantly, being non

  • (PDF) Utilization of cement treated recycled concrete ...

    Egyptian code standards requirements for aggregate mixtures. ... recycled aggregate used as base or subbase layer in Egypt. ... grading curves of LSA within the specification limits for.

  • Development of Design Guidelines for Proper Selection of ...

    The mechanical and drainage properties of graded aggregate base material are the level one input in mechanistic pavement design. Maryland State Highway Administration (SHA) is in need of guidelines for evaluation of stiffness and drainage characteristics of graded aggregate base (GAB) stone delivered at highly variable gradations to the

  • 02621-1 of 9 SECTION 02621 AGGREGATE BASE AND

    AGGREGATE BASE AND SUBBASE COURSES 02621-3 of 9 Published: 01/01 Revised: 3. Laboratory Tests Laboratory grading tests for graded aggregate for base courses shall be performed in accordance with AASHTO T 27 except that the portion larger than the No. 4 sieve will be tested omitting AASHTO T 11. Field gradation will be determined in

  • Crushing brick blends for sub-base applications Quarry

    Mar 19, 2020· VicRoads is a statutory authority responsible for managing the road network (roads and bridges) in Victoria, Australia. It classifies recycled crushed concrete for pavement sub-base and light duty base as Class CC2, Class CC3 and Class CC4 (VicRoads, 2006). This classification is based on the physical and mechanical properties of crushed concrete.

  • AASHTO M 147 - Engineering Standards

    Jan 01, 2017· scope: This specification covers the quality and grading of sand-clay mixtures; gravel, stone, or slag screenings; or sand, crusher run coarse aggregate consisting of gravel, crushed stone, or slag with or without soil mortar or any combination of these materials for use in the construction of subbase, base, and surface courses.

  • Standard Specification for Graded Aggregate Material for ...

    1.1 This specification covers quality-controlled graded aggregates that, when hauled to and properly spread and compacted on a prepared grade to appropriate density standards, may be expected to provide adequate stability and load support for use as highway or airport bases or subbases.

  • Road Aggregate 101: Important Stuff

    Aggregate a mixture of specific types and sizes of crushed rock or gravel. Generally used with a binder in pavements. Also used as road base and sub-base. Rip-Rap a loose assemblage of large stones (rubble). Often used for erosion control and stabilization of roadside features, or as road sub-base

  • 5 Aggregate Specifications and Requirements

    Aggregate Base Subbase Aggregate Pavement or Shoulders Summary of Gradation Requirements. 5-1 5 CHAPTER FIVE: AGGREGATES SPECIFICATIONS and REQUIREMENTS Specifications are generally clear, concise, quantitative descriptions of the significant characteristics of a construction material. The specifications

  • 5 Aggregate Specifications and Requirements

    Aggregate Base Subbase Aggregate Pavement or Shoulders Summary of Gradation Requirements. 5-1 5 CHAPTER FIVE: AGGREGATES SPECIFICATIONS and REQUIREMENTS Specifications are generally clear, concise, quantitative descriptions of the significant characteristics of a construction material. The specifications

  • Section 6F-1 - Pavement Subbase Design and Construction

    Mar 06, 2020· The subbase is the layer of aggregate material that lies immediately below the pavement and usually consists of crushed aggregate or gravel or recycled materials (see Section 6C-1 - Pavement Systems for more information). Although the terms base and subbase are sometimes used interchangeably to refer

  • Influence of PI and Dust Ratio on Aggregates in Subbase ...

    Sep 26, 2018· 1 There are 8 classes of coarse grading that for class 1 & 2 PI value is acceptable up to 13% & 10% respectively. 2 For classes 1 and 2 grading, dust ratio should be less than ¾. 3 For classes 1 and 2 grading, this value can be less than ¾. 4 Lower plastic material (<6) shall be used if crushed gravel, stone, or slag is used.

  • Division 6: Aggregate Base And Subbase Course

    Division 6: Aggregate Base And Subbase Course 6.01 SCOPE: Aggregate Base and Subbase Course shall consist of natural or artificial m ixtures of natural or crushed gravel, crushed stone or slag. 6.02 MATERIALS: Aggregate Base and Subbase Course will be designated as Type I and shall consist of crushed stone, crushed slag or crushed gravel, with

  • TS 1010 Aggregates Base, Subbase, Select Subgrade, and ...

    TS 1010 September 2017 Page 2 of 8 Amendment to OPSS.MUNI 1010 (Apr 2013) Material Specification for Aggregates Base, Subbase, Select Subgrade, and Backfill Material OPSS.MUNI 1010 is amended by the addition of the following subsection:

  • CW 3110 R21 SUB-GRADE, SUB-BASE AND BASE COURSE

    2.2.1.1 Base course and sub-base materials will be of a type approved by the Contract Administrator. 2.2.1.2 Base course and sub-base materials shall be sound, durable particles produced by crushing, screening and grading of recovered materials. 2.2.1.3 Base course and sub-base materials shall conform to the grading requirements in

  • (PDF) The effect of grading on the performance of ...

    the surfacing is thin, so that the granular material with a uniform grading (a range of. aggregate sizes from large to small in the right proportions to form a tightly packed dense. material) in ...

  • Chapter 4: Construction Details, Section 26: Aggregate ...

    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. The Bid Item List and plans specify the class and unit of measurement, and the Standard Specifications and special ...

  • Division 6: Aggregate Base And Subbase Course

    Division 6: Aggregate Base And Subbase Course 6.01 SCOPE: Aggregate Base and Subbase Course shall consist of natural or artificial m ixtures of natural or crushed gravel, crushed stone or slag. 6.02 MATERIALS: Aggregate Base and Subbase Course will be designated as Type I and shall consist of crushed stone, crushed slag or crushed gravel, with or without soil mortar or

  • Standard Specification for Materials for Soil-Aggregate ...

    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 ...

  • ULTIFLOW - Tarmac

    ULTIFLOW aggregate meets the relevant environmental and quality standards. High quality drainage aggregate Our network of UK quarries and specialist production facilities give us exceptional control over production and grading of aggregate, ensuring consistent quality

  • Division 6: Aggregate Base And Subbase Course

    Division 6: Aggregate Base And Subbase Course 6.01 SCOPE: Aggregate Base and Subbase Course shall consist of natural or artificial m ixtures of natural or crushed gravel, crushed stone or slag. 6.02 MATERIALS: Aggregate Base and Subbase Course will be designated as Type I and shall consist of crushed stone, crushed slag or crushed gravel, with or without soil mortar or other adm ixtures.

  • (PDF) Comparison of Specifications for Recycled Concrete ...

    tralia for 20 mm RCA for base and subbase materials, respectively. The target grading specifications from The Netherlands and France for basecourse are provided in Fig. 3 .

  • BASE CONSTRUCTION GUIDELINES - Piedmont Unified

    Grading Layer to provide final planarity. In some cases, this layer performs its job too well. 2 ... Construction of permeable aggregate base layer. Modifications to the design criteria described herein may become necessary depending on the geographical location, soil conditions, and county and state specifications and design practices. ...

  • Section 815 Graded Aggregate

    815.2.01 Graded Aggregate A. Requirements 1. Type Use graded aggregate base, subbase, or shoulder course material of uniform quality. a. Obtain the graded aggregate from an approved source or deposit that will yield a satisfactory mixture meeting all requirements of this Specification. b.

  • Bases/Subbases for Concrete Pavements: State-of-the ...

    Base/subbase provides improved protection of the subgrade, a stronger support to the PCC The the design thickness of the PCC is not significantly affected by the k-value as the PCC modulus (stiffness) has a high relative stiffness: PCC ~ 5.000,000 psi Base/subbase ~ 30,000 psi Subgrade ~ 3,000 to 20,000 psi

  • SECTION 704 BASE AGGREGATES 704.01.01 MATERIALS

    B. Type II Plantmix Aggregate as specified in Subsection 705.03.01, "Plantmix and Roadmix Bituminous Base and Surface Aggregate, Types Two Fine and Coarse and Three," may be used in lieu of Type II Base Aggregate as specified above. 704.03.05 TYPE III AGGREGATE A. The soluble sulfate content shall not exceed 0.3 percent by dry weight of soil.

  • R40 P avement Base and Subbase Dat e: July 2014 Editi on 1 ...

    appendix r40.a materials & construction standards 14 appendix r40.a.1 base class a 14 appendix r40.a.2 base class b 16 appendix r40.a.3 subbase 1 18 appendix r40.a.4 subbase 2 20 appendix r40.a.5 unsealed road and unsealed shoulders wearing surface 22 appendix r40.a.6 frost resistant base 24 appendix r40.b.1 -

  • SECTION 903-AGGREGATES

    903.04-Aggregate for Lean Concrete Base. Aggregate for Lean Concrete Base shall consist of crushed limestone, crushed slag, crushed or uncrushed gravel meeting the requirements of Subsection 903.05, for Class B, Grading D. The aggregate may be a "crusher or pit run" or may be sized into two or more sizes.

  • Road Aggregate 101: Important Stuff

    Aggregate a mixture of specific types and sizes of crushed rock or gravel. Generally used with a binder in pavements. Also used as road base and sub-base. Rip-Rap a loose assemblage of large stones (rubble). Often used for erosion control and stabilization of roadside features, or as road sub-base on soft ground.

  • SECTION 300 AGGREGATE PAVEMENT AND BASES SECTION

    SECTION 302 SUBBASE 302.01 Description This work shall consist of a foundation course of selected materials, placed and compacted on a prepared subgrade in accordance with 105.03. Subbase for PCCP shall consist of 3 in. of coarse aggregate No. 8 as the aggregate drainage layer placed over a 6 in. coarse aggregate No. 53 as the separation layer.

  • Caltrans Specifications for Aggregate Base and Subbase

    The following specifications can be found on the Caltrans Construction Contract Standards webpage: 2010 Standard Specifications allowed up to 100 percent use of recycled aggregate for both base and subbase. 2006 Standard Specifications originally only allowed up to 50 percent use of recycled aggregate for subbase or base, but were amended in ...

  • DENSITY STANDARDS FOR FIELD COMPACTION OF

    for the setting of density standards to control compaction during construction of granular base and subbase courses, and to develop more appropriate new or revised procedures and criteria. Major emphasis during the early stages of the research was placed on accumu-lation and analysis of information on current practices of state highway depart ...

  • (PDF) The effect of grading on the performance of ...

    aggregates (base and sub-base materials) with a focus on gradation ranges (Bennert and Maher 2003). Resilient modulus and permanent strain RLT tests were conducted and

  • Standard Specification for Graded Aggregate Material For ...

    Aggregate Specifications. Current edition approved July 10, 1998. Published February 1999. Originally published as D 2940 71 T. Last previous edition D 2940 92. 2 Annual Book of ASTM Standards, Vol 04.02. 3 Annual Book of ASTM Standards, Vol 04.03. 4 Annual Book of ASTM Standards, Vol 04.08. 5 Annual Book of ASTM Standards, Vol 14.02. 1

  • Aggregate Testing Standards EnviroMINE, Inc.

    Dec 01, 2014· Standard Sizes of Coarse Aggregate: Aggregate Base, Subbase, & Soil Aggregate: AASHTO M-283: Coarse Aggregates for Highway and Airport Construction: ASTM D 2940: Graded Aggregate for Bases or Subbases: AASHTO M-147: ASTM D 1241: Materials for Aggregate and Soil-Aggregate Subbase, Base and Surface Courses: AASHTO M-155

  • SECTION 300 AGGREGATE PAVEMENT AND BASES

    SECTION 302 SUBBASE 302.01 Description This work shall consist of a foundation course of selected materials, placed and compacted on a prepared subgrade in accordance with 105.03. Subbase for PCCP shall consist of 3 in. of coarse aggregate No. 8 as the aggregate drainage layer placed over a 6 in. coarse aggregate No. 53 as the separation layer.

  • compaction for aggregate basecourse/sub-base ...

    Feb 03, 2012· RE: compaction for aggregate basecourse/sub-base? Drumchaser (Civil/Environmental) 18 May 11 19:27 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.

  • Subgrades & Subbases for Concrete Slabs - The Concrete Network

    Jul 31, 2018· A flat base course will also allow the slab to slide easily as it shrinks, reducing restraint and the risk of cracks as the concrete contracts after placement (drying shrinkage). The entire subbase and base system should be at least 4 inches thickthicker if the engineer feels it is needed for proper support.

  • Grading Requirement - an overview | ScienceDirect Topics

    AASHTO Standard Specification, M147-65, Materials for Aggregate and Soil-Aggregate Subbase, Base, and Surface Courses (AASHTO, 2012a, 2012b) covers the quality and gradation of sandclay mixtures; gravel, stone, or slag screenings; or sand, crusher run coarse aggregate consisting of gravel, crushed stone, or slag with or without soil mortar ...

  • Aggregates for Concrete as per American Standards - ASTM

    Fig 1: Aggregates used in production of concrete. The aggregates are broadly classified into two types based on the size, namely- fine aggregate and coarse aggregate. In this article, we discuss the properties of the standard aggregates used in the production of concrete as per the American Standards (ASTM- C33/C33M).

  • Standard Classification for Sizes of Aggregate for Road

    4.1 Some contract documents specify certain aggregate sizes for specific uses or may suggest one or more of these sizes as appropriate for the preparation of various end-product mixtures. In some cases, closer limits on variability of the aggregate grading are required. 5. Manufacture 5.1 The standard sizes of aggregate described in this clas-

  • ASTM International - ASTM D1241-00 - Standard ...

    Nov 10, 2000· scope: 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.