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Hot Mix Asphalt with Type B Aggregate 0.40 2 Base Course 3. Type B Hot Mix Asphalt Crushed (Graded) Stone Base 0.14 6 Macadam Stone Base 0.12 6 Portland Cement Concrete Base (New) 0.50 Old Portland Cement Concrete 0.40 Crack and Seated PCC 0.25 – 0.30 Rubblized PCC 0.20 Cold in Place Recycled 0.22 – 0.27 Subbase Course Soil‐Cement Subbase 0.10 6 Soil‐Lime Subbase 0.10 6
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Traditionally, base course aggregate mixtures have been designed using larger aggregate size than surface course aggregate mixtures—the maximum aggregate size had tended to be in the range 0.75–1.5 inches (19–37.5 mm) which helps to produce a lean mixture with low asphalt binder content thereby reducing the cost of such mixtures but this must not be at the expense of efficiency. More
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Sand Clay Gravel – Base Course Aggregate TR 112 & TR 113 Method C Sand – Base Course Aggregate TR 112 & TR 113 Method B Stone – Base Course Aggregate TR 112 & TR 113 Method C Recycled PCC – Base Course Aggregate TR 112 & TR 113 Method C ---continued--- DOTD TR 113-15 Rev. 12/15 Page 2 of 19 Introduction TABLE 1 Testing Requirements continued Crushed Slag – Base Course Aggregate
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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.
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Figures 2-6 and 2-7 show the approximate design air freezing indices for the lower United States and Alaska, Aggregate Base Course Crushed Aggregate Base Course Lime Rock Base Course Cement Treated Base Course Econocrete Subbase Course Plant Mix Bituminous Pavements Materials of higher quality than P-154 and/or greater thicknesses of subbase are considered in the design
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A. 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 requirements for the ratio for the minus No. 200 sieve fraction to the minus No. 40 sieve fraction shall not apply. The requirements for the Los Angeles wear test shall not apply to Class 1, 2, and 3. Aggregates for
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PART III -- BASE COURSES Section No. Page No. 301 Class I Base Course.. 132 302 Class II Base Course.. 150 303 In-Place Cement Stabilized Base Course.. 163 304 Lime Treatment.. 173 305 Subgrade Layer.. 181 306 Scarifying and Compacting Roadbed.. 185 307 Permeable Bases.. 187 308 In-Place Cement Treated Base Course.. 191 131. Section 301 Class I Base Course
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HL 2, HL 3, HL 3F, HL 4, HL 4F, Superpave 4.75, 9.5, 12.5 surface course mixes; HL 4, HL 8, Medium Duty Binder Course (MDBC) and Heavy Duty Binder Course (HDBC), Superpave 19.0, 25.0 & 37.5 binder course do not require the use of designated source aggregates, but, in some cases, do require that minimum crushed aggregate percentage and source type requirements are met. As well, other
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Crushed Aggregate Usage. From the roads we drive on to the buildings we live and work in, each person in the United States utilizes more than 10 tons of aggregate annually according to United States Geological Survey estimates. Our crushing division has been in the aggregate crushing business for 50 years. We provide quality crushed stone, sand
Get PriceWhen 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. Top 0.15 foot (45 mm) crushed top surfacing, remaining depth crushed base course. Indicate the selected option and the grade of crushed
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209-4.1 The quantity of crushed aggregate base course to be paid for will be determined by measurement of the number of square yards of material actually constructed and accepted by the Engineer as complying with the plans and specifications. BASIS OF PAYMENT. 209-5.1 Payment shall be made at the contract unit price per square yard for crushed aggregate base course. This price
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08.08.2018· When doing structural foundations or base course under concrete slabs and asphalt pavement roadways, Aggregate Base is in use. It can be placed by attentive spreading then compacting. The sub-base if formed by dust and small chipped aggregate layers, typically Crushed Fines. The crushed aggregate base lays on heavy traffic or driveways areas.
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HL 2, HL 3, HL 3F, HL 4, HL 4F, Superpave 4.75, 9.5, 12.5 surface course mixes; HL 4, HL 8, Medium Duty Binder Course (MDBC) and Heavy Duty Binder Course (HDBC), Superpave 19.0, 25.0 & 37.5 binder course do not require the use of designated source aggregates, but, in some cases, do require that minimum crushed aggregate percentage and source type requirements are met. As well, other
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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. Crushed aggregate shall consist of clean, sound, durable particles of crushed stone or crushed gravel and shall be free from excess
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Aggregate Base Course often referred simply as ABC, has certain desirable properties. Base Course in pavements refers to the sub-layer material of an asphalt roadway and is placed directly on top of the undisturbed soil (Sub-Grade) so as to provide a foundation to support the top layers of the pavement. It is typically made of a recipe of different sizes of aggregate
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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.
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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. Top 0.15 foot (45 mm) crushed top surfacing, remaining depth crushed base course. Indicate the selected option and the grade of crushed
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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 with the dimensions and typical cross section shown on the Plans. MATERIALS
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AGGREGATE BASE COURSES RELEASE – R2.1.1 SECTION 32 11 23 BART FACILITIES STANDARDS Issued: 10/01/2010 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
Get PriceHL 2, HL 3, HL 3F, HL 4, HL 4F, Superpave 4.75, 9.5, 12.5 surface course mixes; HL 4, HL 8, Medium Duty Binder Course (MDBC) and Heavy Duty Binder Course (HDBC), Superpave 19.0, 25.0 & 37.5 binder course do not require the use of designated source aggregates, but, in some cases, do require that minimum crushed aggregate percentage and source type requirements are met. As well, other
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