plication (e.g., free-draining vs. dense-graded) and to minimize production of materials that cannot be used. In addition, good dense-graded unbound base materials typically have a plasticity index (PI) of 6.0 or less, with no more than 12% to 15% pass-ing through the No. 200 sieve (ACPA 2007, ASTM 2015).
When using a thicker aggregate subbase, it is important to watch the fines content in the aggregate. Even though some state transportation departments allow up to 15% fines for typical dense-graded aggregate, many aggregates become sensitive to moisture and traffic when the fines content is above 10%.
Aggregates for use as granular base tend to be dense-graded with a maximum size of 50 mm (2 in) or less, while granular subbase can have a nominal maximum size commonly up to 100 mm (4 in). The percentage of fines (minus 0.075 mm (No. 200 sieve)) in the granular base is limited, for drainage and frost-susceptibility purposes, to a maximum of 8 ...
Jun 30, 2011· The hardened concrete is crushed and graded to ASTM C33 #67. The mix used for the Green Mile Project is composed of 30% CCA and 70% limestone aggregate. The mix includes a 40% replacement of portland cement with SCMs and uses …
When using a thicker aggregate subbase, it is important to watch the fines content in the aggregate. Even though some state transportation departments allow up to 15% fines for typical dense-graded aggregate, many aggregates become sensitive to moisture and traffic when the …
Recent research at the University of Illinois 1 11 21 1 4 2 1 1 0 5 10 15 20 25 N um be r o f A ge nc ie s Maximum Allowable Aggregate Particle Size FIGURE 10 Base layer dense-graded unbound aggregate: maximum aggregate particle size allowed by agencies. 1 1 1 11 1 8 1 5 2 1 1 2 0 2 4 6 8 10 12 14 N um be r o f A ge nc ie s Maximum Allowable ...
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.
Dense Graded Aggregate Dga Crusher Run. dense graded aggregate dga crusher run. crusher run is the common name for dense graded aggregate or dga, a grade of stone generally used as a base under asphalt, roads, and concrete or interlocking walls. get price. crusher run stone under driveway . Crusher Run / Graded Aggregate Base for Sale - DIRT ...
GRADED Aggregates should range in size so that they fit together well. This gives a stronger and denser concrete. Rounded aggregates give a more workable mix. Angular aggregates make concrete harder to place, work and compact, but can make concrete stronger. STORAGE Aggregates should be stored where they will stay clean, separated from other
Uses for dense graded aggregate: Typical base material under ___ pavements. Compacts to a dense mass that is relatively impermeable to water. __-10% voids in mass after compaction. The material ranges in size from less than 200 sieve to 1" or more.
Aggregate shall not be placed when the air temperature is less than 35°F. Aggregate shall not be placed on a frozen subgrade. Frozen aggregate shall not be placed. 301.05 Spreading The moisture content of dense graded aggregate shall be between 4% and the 30 optimum moisture content prior to placement when the aggregate is delivered to the ...
SECTION 321123 – DENSE GRADED AGGREGATE BASE COURSE PART 1 – GENERAL 1.1 DESCRIPTION A. This item shall include the placement of a layer of ¾-inch Dense Graded Aggregate (DGA), to the thick-nesses specified on the plans, incl uding all necessary excavation and removal of all earth, rock, boulders,
Note: As an alternative test method, in-place density of the base aggregate may be checked per ASTM D 4254. Compacted density should be 95% of the laboratory index density established for the base layer. E. Bedding layer Moisten, spread and screed the No. 8 stone bedding material. Fill voids left by removed screed rails with No. 8 stone.
D946 Specification for Penetration-Graded Asphalt Cement for Use in Pavement Construction. D2041 Test Method for Theoretical Maximum Specific Gravity and Density of Bituminous Paving Mixtures. D2419 Test Method for Sand Equivalent Value of Soils and Fine Aggregate. D3203 Test Method for Percent Air Voids in Compacted Dense and Open Bituminous ...
50/70 penetration grade bitumen to form a dense graded mixture. The shape characteristics of the aggregate have been determined by ASTM C1252, modified ASTM C1252, EN 933-6, ASTM
The subbase is the finely graded compactable material between the subgrade and the concrete. Geotechnical engineers typically are contracted by owners to evaluate soil conditions on a construction site and sometimes they specify the subbase fill materials to be used and how they should be placed.
1/6/2009· Are capillary breaks really needed if there is a vapor barrier? ... he analyzed a "dense-graded aggregate (i.e., minus 3/4-in with about 5 percent passing the 200 sieve - D10 of about 0.15 mm) for the "capillary break" [typically used] beneath industrial floor slabs". ... So if you're specifying a slab on grade that has a base that is in ...
ASTM's road and paving standards provide the specifications and test methods pertinent to the material, physical, mechanical, performance, and application requirements of road surfaces and pavements. These geotechnical surfaces are laid down on specified areas intended …
DIVISION 300 - AGGREGATE BASE COURSES . 301 Traffic-Bound Base . 302 Dense Graded Aggregate Base (DGA) and Crushed Stone Base (CSB) 303 Pavement Drainage Blanket . 304 Geogrid Reinforcement for Subgrade and Aggregate Base Courses
Bases and Subbases for Concrete Pavements . ... ranges achieved by the subgrade and the base layers. The PCC slabs provide most of the ... Subbase Types The base and subbase types commonly used for rigid pavements include the f ollowing: • Granular bases: o Dense-graded aggregate base. o Open-graded aggregate drainage layer. • Stabilized bases:
Preparing subgrades for foundations, slabs-on-grade, walks, pavements, lawns and grasses. 2. Excavation and backfilling for buildings and structures. ... (ASTM): 1. ASTM D1556, Density of Soil In Place by the Sand-Cone Method. ... Dense Graded Aggregate, Granular/Structural Fill or Base Course Sand and Gravel Fill, provided that these soils are ...
SP/SM10:140905 SPECIFICATION FOR DENSE GRADED AND STONE MASTIC ASPHALTS Page 6 of 30 2.1.2 Coarse Aggregate Coarse aggregate is comprised of particles that are retained on the 4.75 mm sieve. Coarse aggregate shall comply with Table 2.1 or Table 2.2 as …
8/31/2018· ASTM C33, with less than 1% passing the No. 200 (0.075 mm) sieve, or ASTM C144. C. Use dense-graded gravel base material meeting the requirements of the local transportation agency. Material should be a mixture of hard, durable fragments of crushed stone. …
Open-Graded Base Courses for Slabs-on-Ground ASCC Position Statement #37 S ome specifications for concrete slabs-on-ground call for concrete to be placed on a layer of granular solidated. This penetration into the subbase [base] restricts material containing very few fines. ASTM No. 57 and No. 67 coarse aggregates are examples of such materials.
7/7/2014· According to size coarse aggregate is described as graded aggregate of its nominal size i.e. 40 mm, 20 mm, 16 mm and 12.5 mm etc. for example a graded aggregate of nominal size 20 mm means an aggregate most of which passes 20 mm IS sieve. A coarse aggregate which has the sizes of particles mainly belonging to a single sieve size is known as ...