Crushed stone aggregates are produced by crushing quarried rock, then screening it to sizes appropriate for the intended use. Production of crushed stone has three stages: Primary crushing to break down the stone to a manageable size; secondary and tertiary crushing to render the rocks into sizes specific to their applications; and screening to separate the crushed stone for further processing
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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.
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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.
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Washington Yes up to 100% as base (9-03.21) Wisconsin >= 90% crushed concrete that is free of steel reinforcement. And include
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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
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outlined in Item 230.5, of "Crushed Aggregate Base Course". 231.6 Measurement. "Cement Stabilized Crushed Aggregate Base", will be measured by the square yard of material, furnished and compacted in place and to the thickness specified, or as shown on the plans.
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Washington Yes up to 100% as base (9-03.21) Wisconsin >= 90% crushed concrete that is free of steel reinforcement. And include
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Aggregate Base 5-6 Aggregate Subbase 7-8 Asphalt Cement (PG XX-XX) 30 Mineral Aggregate for Asphaltic Concrete Friction Course (ACFC) 12 Mineral Aggregate for Asphaltic Concrete Friction Course 15 (Asphalt-Rubber) [AR-ACFC] Crusher Belt or Stockpile At start of production, then as material changes. Optimum
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aggregate base, should get similar layer thickness. –Typical minimum thickness = 4 inches (constructability, stability) –Typical maximum thickness = 6 inches for PCC pavement •Greater thickness for frost protection, if necessary –Blend with aggregate if designed base requirements exceed volume of recoverable RCA base.
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* Glass must meet certification requirements on the Grading and Base website. Combine glass with other aggregates during the crushing operation. † If material ≥ 20% RAP and/or Concrete, Class 5 crushing requirement is met.] † If material ≥ 60% RAP and/or Concrete, Class 5Q crushing requirement is met.
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2.4 Base course Material specifications as per ERA Manual The particle size distribution recommended by [3] for crushed stone base course materials (GB1) is shown in table 2.1 Table 2.1: Grading Limits for Graded Crushed Stone Base Course Materials (GB1) [3] Test sieve (mm) Nominal maximum particle size 37.5
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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.
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aggregate 6A prior to crushing. The Engineer will only allow stone sand in concrete base course or structural concrete not exposed to vehicular traffic. Soft Particles. Structurally weak particles or particles experiencing environmental deterioration, including shale, siltstone, friable sandstone, ochre, coal, and clay-ironstone. Crushed Particles.
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* Glass must meet certification requirements on the Grading and Base website. Combine glass with other aggregates during the crushing operation. † If material ≥ 20% RAP and/or Concrete, Class 5 crushing requirement is met.] † If material ≥ 60% RAP and/or Concrete, Class 5Q crushing requirement is met.
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* Glass must meet certification requirements on the Grading and Base website. Combine glass with other aggregates during the crushing operation. † If material ≥ 20% RAP and/or Concrete, Class 5 crushing requirement is met.] † If material ≥ 60% RAP and/or Concrete, Class 5Q crushing requirement is met.
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Reclaimed stabilized base material shall be mixed with loam as specified in 2.6. 3.1.5.1 Reclaimed stabilized base material shall not be substituted for crushed aggregate for shoulders in areas contiguous to residences and other existing landscaped areas where the growth of grass is desired. 3.2 Aggregate Crushing Plant.
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DIVISION 300 -- BASE COURSES SECTION 304 -- AGGREGATE BASE COURSE SECTION 306 -- RECLAIMED STABILIZED BASE SECTION 304 -- AGGREGATE BASE COURSE Description Materials 2.1 General. Construction Requirements 3.1 General. 3.2 Aggregate Crushing Plant. 3.3 Stockpile Construction. 3.4 Placing. 3.5 Testing For Gradation. 3.6 Compaction.
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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
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Grading D. The aggregate may be a "crusher or pit run" or may be sized into 2 or more sizes. If the material is "crusher or pit run", care shall be taken to prevent segregation during stockpiling and handling. 903.05-Aggregate for Mineral Aggregate Base and Surface Courses. Aggregates for Mineral Aggregate Base and Surface Courses shall be
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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.
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AGGREGATE BASE COURSE PART 1
Inspection of Aggregate Production In the production of subbase and base course aggregates, if for any reason it is deemed advisable to depart from the requirements of the Standard Specifications or Special Provisions, a supplemental agreement shall be submitted.
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The work will consist of crushing and stockpiling or crushing and delivery of crushed aggregate base course material conforming to the specifications for Base Aggregate in the latest edition of “Wisconsin DOT Standard Specifications for Road & Bridge Construction” and any attached supplemental specification.
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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
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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.
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asphalt and mineral aggregate and a base course. The base course is generally com posed of granular material such as crushed aggregate, gravel, selected soil, or a mix ture of selected soil and aggregate. Since the cost of the surface course per ton is sev eral times that of the base course, its thickness is generally just a fraction of
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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.
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aggregate 6A prior to crushing. The Engineer will only allow stone sand in concrete base course or structural concrete not exposed to vehicular traffic. Soft Particles. Structurally weak particles or particles experiencing environmental deterioration, including shale, siltstone, friable sandstone, ochre, coal, and clay-ironstone. Crushed Particles.
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asphalt and mineral aggregate and a base course. The base course is generally com posed of granular material such as crushed aggregate, gravel, selected soil, or a mix ture of selected soil and aggregate. Since the cost of the surface course per ton is sev eral times that of the base course, its thickness is generally just a fraction of
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hma base crushing, modified and aggregate base course
* Glass must meet certification requirements on the Grading and Base website. Combine glass with other aggregates during the crushing operation. † If material ≥ 20% RAP and/or Concrete, Class 5 crushing requirement is met.] † If material ≥ 60% RAP and/or Concrete, Class 5Q crushing requirement is met.
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Aggregate Base 5-6 Aggregate Subbase 7-8 Asphalt Cement (PG XX-XX) 30 Mineral Aggregate for Asphaltic Concrete Friction Course (ACFC) 12 Mineral Aggregate for Asphaltic Concrete Friction Course 15 (Asphalt-Rubber) [AR-ACFC] Crusher Belt or Stockpile At start of production, then as material changes. Optimum
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