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thread337-482048. A contractor wants to use a slab on grade, atop three or four feet of gravel fill. I have heard recommendations to use anywhere from 3/8" to 3/4" consolidated crushed rock.. I have heard recommendations to use well graded and compacted base 3/8" minus.... and even ASTM C-33 sand. Can't seem to find any …
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o Dense-graded aggregate base. o Open-graded aggregate drainage layer. • Stabilized bases: o Cement-stabilized bases: Cement-treated base. Lean concrete base. Cement …
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1.1 This specification covers quality-controlled graded ag-gregates that, when hauled to and properly spread and com-pacted on a prepared grade to appropriate …
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ASTM C 125 defines the maximum aggregate size in one of two ways: Maximum size. The smallest sieve through which 100 percent of the aggregate sample particles pass. Superpave defines the maximum …
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Vapor retarders are materials that will minimize the transmission of water vapor from the sub-slab support system into a concrete slab. Vapor retarders are typically specified according to ASTM E 1745 and have a permeance of less than 0.3 US perms (0.2 metric perms), when tested by ASTM E 96. Low-density polyethylene film is commonly used …
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TABLE 301-2 AGGREGATE BASE PHYSICAL PROPERTIES PROPERTY CRUSHED STONE CRUSHED GRAVEL CRUSHED CONCRETE RECLAIMED ASPHALT REPROCESSED MATERIAL BLENDED MATERIAL Gradation WTM T27 dense 305.2.2.1 305.2.2.1 305.2.2.1 305.2.2.2 305.2.2.1 305.2.2.1[1] open-graded 310.2 310.2 not …
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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. …
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8" Graded aggregate or crusher run base course for main line pavement. 10" Graded aggregate or crusher run base course for cul-de-sacs. Base shall be compacted to 98% maximum dry density per standard proctor test ASTM D698. Subgrade stabilized with stone, unless material in place weighs at least 95-lbs./cu. ft. Or . b.
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The Engineer will specify the percentage of Portland cement to use. Gradation Grade the graded aggregate base, subbase, or shoulder material as follows: NOTE 1: Group I aggregates having less than 37% passing the No. 10 (2 mm) sieve, shall have at least 9 percent passing the No. 200 (75 μm) sieve. NOTE 2: For graded aggregate stabilized …
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Grade 5 Grade 5 base is a modification of a Grade 1 –2 base and has most of its characteristics, except for the unconfined compressi ve strength requirement . Grade 5 base material allows the use of a harder aggregate with a lower fines content. Fines may be less cohesive than those found in Grade 1 –2.
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A. Preparation of sub grade under slabs is specified in Section 31 00 00 - Earthwork. ... The sub grade or sub base to receive aggregate drainage fill shall conform to the compaction and ... Provide for relative density of 75 percent as determined by ASTM D4253, Dry Method, and ASTM D4254, Method A.
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The open-graded base is installed using two different types of aggregates: 1. ASTM #57. This is ¾ inch open-graded crushed rock with no fines that is used for a recommended minimum of 6 to 8 inches after installing a geotextile fabric to separate the subsoil from your base. It has a high compaction rate, so more can be laid in lifts before ...
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Use graded aggregate base material of uniform quality throughout, substantially free from vegetable matter, shale, lumps and clay balls, and having a Limerock Bearing Ratio value ... 204-6.1 General: Meet the requirements of 200-7.1 with density requirements of 204-6.3. 204-6.1.1 Single-Course Base: Construct as specified in 200-6.1.1.
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Scope. 1.1 This specification defines the requirements for grading and quality of fine and coarse aggregate (other than lightweight or heavyweight aggregate) for use in concrete. 1.2 This specification is for use by a contractor, concrete supplier, or other purchaser as part of the purchase document describing the material to be furnished. …
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INTENDED USE OF AGGREGATE SIZES 53, 53B, 63 AND 73. Aggregate size No. 53, as specified in the Indiana State High way Commission's 1960 standard specifications, was …
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5 6 3 The dense graded bituminous mixes shall be rolled in the longitudinal direction, with the roller as close as possible to the paver, The overlap on successive passes should be at least one- third of the width of the rear roll or in the case of pneumatic wheeled rollers, at least the nominal width of 300 mm.
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The test method is ASTM approved (ASTM D 6780). Field testing was conducted on five sites that consisted of dense graded aggregates base layer as well as on some NJDOT designated I-9 porous fill materials. Limited testing was also done using an Electric Density Gauge (EDG) manufactured by EDG, LLC. The results on the field testing are
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Columbus. #67 Stone. 3/8" to 3/4". Primarily used for Ready- Mix applications & general road construction. GDOT & ALDOT, ASTM C33 Spec. Columbus. Graded Aggregate Base. Clean granite material, also referred to as ALDOT 825B. Roadways, concrete foundation material, driveways, railroad sub base, airfield base.
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Types of Grading7•Dense-or well-graded aggregate–Has gradiationclose to the FWHA maximum density grading curve.•Gap-graded aggregate–Has only a small percentage of particles in the mid-size range.•Uniformly graded aggregate–Composed mostly of particles of the same size.•Open-graded aggregate–Contains only a small …
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Summary of Adopted Changes 2011 Jersey Department of Transportation's Standard Specifications for Road and Bridge Construction. 3Thicknesses may have to be constructed in multiple lifts, based on equipment capabilities. 4The [granular] dense graded aggregate base shall [be dense graded aggregate conforming] conform to Section 302 of the New …
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When properly designed and constructed, a dense-graded mix is relatively impermeable. Dense-graded mixes are generally referred to by their nominal maximum aggregate size and can further be classified as either fine-graded or coarse-graded. Fine-graded mixes have more fine and sand sized particles than coarse-graded mixes. Figure 1: Dense ...
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Well-graded aggregate blends optimize properties using less cement or asphalt. However, workability can suffer from a wide range of sizes. Gradations may need adjustment to improve placement and consolidation based on the application. Gap-Graded Aggregate. Gap-graded aggregates are missing certain intermediate particle sizes, creating a gap …
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to limit moisture migration into the slab. ASCC contrac-tors believe that a dense-graded base covered by a 10 mil vapor retarder (as recommended in ACI 302.1R-04) is the best …
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CHAPTER 1—INTRODUCTION. Hydraulic cement concrete is a cement and water paste in which aggregate particles are embedded. Aggregate is granular material such as sand, …
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Recommended aggregate nominal maximum aggregate sizes for dense-graded HMA mixtures. Aggregate NMAS (mm) Minimum VMAa (%) Maximum VMAa (%) 16 18 15 17 14 16 13 15 12 14 4.75 9.5 12.5 19.0 25.0 37.5 11 13 aThe specifying agency may increase the minimum and maximum values for VMA by up to 1% to obtain mixtures with increased …
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ABCM Aggregate Base Coarse is a hard pack sub-base compaction material. Contains a mix of crushed stone, topsoil and dust. Cross-Section layers that make up a mortar-less or "dry-laid" pavement. A. Sub-Grade or undisturbed soil B. Aggregate Base Course C. Sub-Base Crushed Fines D. Paver Sand base bed E. Pavers F. Polymeric Sand. Aggregate ...
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used dense-graded aggregate base in conjunction with a sand setting ... Residential; and 2) Commercial. Open-grade d aggregate base can be used for most single-family residential applications including driveways, patios, and pool decks. ... The open-graded base should conform to ASTM C33 size No. 57 as shown below or similar gradation:
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recycled concrete aggregate, cement-treated, lean Summary/Overview 1 Introduction 2 Design Principles 3 Subgrades 4 Subbases 5 References Appendices Index * The use highly open-graded or permeable subbases for concrete pavement is not recommended. This conclusion was reached through experiences with poorly performing pavements …
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A base serves two main purposes: It provides uniform support for the slab It serves as a capillary cutoff that prevents moisture from wicking up through the subgrade and collecting beneath the slab, A granular base also may be easier to fine-grade before placing the concrete. If the subgrade is difficult to grade, slab thickness may vary.
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302.1 GENERAL. The work provided under this specification shall include the furnishing, placement and compaction of aggregate base course (ABC) to the lines, grades, dimensions, moisture, density and typical sections as specified in the plans and specifications, and or as directed by the ENGINEER. The CONTRACTOR shall be solely …
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