703. 03 Aggregate for Hot Mix Asphalt Base Course. Aggregate for HMA base course shall conform to Subsection 703.09 - Aggregate for Hot Mix Asphalt Pavement, except grading shall conform to Table 703.03-1 - HMA Base Course ... SECTION 703 - AGGREGATES ...
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
Aug 14, 2009· An aggregate base course is the layer of soil installed between the surface pavement layer and subgrade (foundation soils) of either flexible or rigid pavement.Their purpose is to help transition surface loads from the pavement to the subgrade, evenly support the pavement surface profile, and protect the overall pavement system from water intrusion and deformation.
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 ... 32 11 23 Aggregate Base Course ...
DIVISION 300 BASES SECTION 304 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.
Aug 14, 2009· The main objective of concrete base courses is to regulate moisture, preventing the types of damage common to rigid pavement systems. Load transfer concerns, which can necessitate some base course applications, is less of an issue for rigid pavement. Aggregate base courses for rigid and flexible pavements are discussed in article 32.11.23.
aggregate base course indicated in the Bid Schedule of the Bid Form. B. Lump Sum: If the Bid Schedule indicates a lump sum for aggregate base course, the Lump-sum method of measurement and payment will be in accordance with Section 01 20 00 - Price and Payment Procedures, Article 1.03. ... 32 11 23 - Aggregate Base Course
Aug 14, 2009· Portland cement concrete paving is also referred to as rigid paving. Concrete pavement is supported by a base layer of compacted aggregates or treated soils, which is in turn placed upon the foundational subgrade soils of the prepared roadbed.If two base layers are utilized, they are referred to as the base and sub-base layers (or courses).
Aggregate Base Courses - Buildipedia. An aggregate base course is the layer of soil installed between the surface pavement layer and subgrade (foundation soils) of either flexible (asphalt) or rigid (concrete) pavement.
The base course or basecourse in pavements is a layer of material in an asphalt roadway, race track, riding arena, or sporting field.It is located under the surface layer consisting of the wearing course and sometimes an extra binder course.. If there is a sub-base course, the base course is constructed directly above this layer.
Contractor's expense before the base course is placed thereon. Material shall not be placed on frozen material. To protect the existing layers and to ensure proper drainage, the spreading of the recycled concrete aggregate base course shall begin along the centerline of the pavement on a crowned
completion date for the HMA Base Crushing, Modified is October 25th, 2019. The completion date for Furnish, Haul, and Tailgate MDOT 22A Aggregate Base Course is November 29th, 2019. The low bidder(s) for the work covered by this proposal will be required to meet with Road Department representatives to work out a detailed Progress Schedule.
UNIFIED FACILITIES GUIDE SPECIFICATIONS References are in agreement with UMRL dated July 2019 ***** SECTION 32 11 23 AGGREGATE BASE COURSES 08/17 ***** NOTE: This guide specification covers the requirements for base course to be used directly under bituminous pavement courses. Adhere to UFC 1-300-02 Unified Facilities Guide
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
Strength is a measure of the ability of an aggregate particle to stand up to pulling or crushing forces. Elasticity measures the "stretch" in a particle. High strength and elasticity are desirable in aggregate base and surface courses. These qualities minimize the rate of disi ntegration and maximize the stability of the compacted material.
Aggregate Base Course | Acme Sand & Gravel. Crushed Aggregate Base Coarse (Compaction Gravel) shall consist of one or more courses or layers of coarse aggregate, either crushed gravel or crushed stone, fine aggregate and binder or filler blended as necessary to produce an intimate mixture of the required gradation and stability.
The main objective of concrete base courses is to regulate moisture, preventing the types of damage common to rigid pavement systems. Load transfer concerns, which can necessitate some base course applications, is less of an issue for rigid pavement. Aggregate base courses for rigid and flexible pavements are discussed in article 32.11.23.
AGGREGATE BASE COURSES RELEASE - R1.2 SECTION 32 11 23 BART FACILITIES STANDARDS SAVE DATE: 8/19/2004 9:06 AM PAGE 5 OF 5 STANDARD SPECIFICATIONS D. Aggregate base course 6 inches and less in thickness may be spread and compacted in one layer. For thickness greater than 6 inches, the base course aggregate shall be spread and compacted in
Item 247 Flexible Base 1. DESCRIPTION Construct a foundation course composed of flexible base. 2. MATERIALS ... Aggregate. Furnish aggregate of the type and grade shown on the plans and meeting the requirements of ... Place successive base courses and finish courses using the same construction methods required for the first course. 4.3.
Aggregate Base Course Page 28-6 b. The aggregate base material that has been processed in a traveling plant, or mixed and blended inplace, shall be spread in a uniform layer of - required depth and width and to the typical cross section.The spreading shall be by a self-powered blade grader, mechanical spreader, or other approved method.
SECTION 02621 AGGREGATE BASE AND SUBBASE COURSES 02621.01 GENERAL A. Description Aggregate base and subbase courses shall include, but not necessarily be limited to, furnishing and placing one or more courses of aggregate, including additives when required, on a surface prepared in accordance with the Contract Documents. B. Related Work ...
ANALYSIS OF USING RECLAIMED ASPHALT PAVEMENT (RAP) AS A BASE COURSE MATERIAL by Robert Locander, P.E. Pavement Design Program Report No. CDOT-2009-5 Sponsored by Colorado Department of Transportation In Cooperation with the U.S. Department of Transportation Federal Highway Administration February 2009 Colorado Department of Transportation
The design should be done so that to meet the above requirements for considerable number of years (need proper design and construction supervision). Pavement meeting all the requirements above have been product if six distinctly different construction processes as follows. Heat a viscous bituminous binder to make it fluid, then in a plant mix it with heated
Section 301 Base, Subbase, and Subgrade Aggregate. Revise 301.2.2(1) to add crushed gravel, add natural material, and clarify crushed ..... of recycled/reclaimed materials under zenith aggregate base course …
SECTION 304 DIVISION 300-- BASE COURSES SECTION 304 -- AGGREGATE BASE COURSE Description 1.1 This work shall consist of furnishing and placing base courses on a previously prepared subgrade or course as shown on the plans or as ordered. 1.2 This work shall also include raising the grade of the edge of the roadway shoulders with crushed aggregate as shown
SECTION 3.01 MATERIALS FOR SUB-BASE AND BASE COURSES 3.01.01 SCOPE A. This section covers the requirements for the characteristics, source, supply and storage of sub base and base course pavement materials B. Materials specified for use in the construction of sub-base and base courses for flexible and rigid pavements include the following:
An aggregate base course is the layer of soil installed between the surface pavement layer and subgrade (foundation soils) of either flexible or rigid pavement.Their purpose is to help transition surface loads from the pavement to the subgrade, evenly support the pavement surface profile, and protect the overall pavement system from water intrusion and deformation.
Aggregate base is a construction aggregate typically composed of crushed rock capable of passing through a 20 millimetres (3 ⁄ 4 in) rock screen.The component particles will vary in size from 20 mm down to dust. The material can be made of (newly mined) rock, or of recycled asphalt and concrete.
Crushed Surfacing Base Course 2,950 1.48 3,700 1.85 Screened Gravel Surfacing 3,700 1.85 ... The specific gravity of the aggregate will affect the weight of aggregate in the completed mix.  Quantities shown do not provide for widening, waste from stockpile, or thickened edges. Chapter 620 Design of Pavement Structure WSDOT Design Manual M 22 ...