Effective with the November 2023 Letting 120 2024 Standard Specifications [3] Required as specified for the individual component materials defined in columns 2 - 6 of the table before blending. [4] For base placed between old and new pavements, use crushed stone, crushed gravel, or crushed concrete with a plasticity index of 3 or less. [5] >=75 …
Aggregate Base Course (ABC) Under Asphalt Crushed Gravel Base; Material: Crushed Aggregate: Crushed Gravel: Gradation: Well-graded with a range of sizes: Well-graded with a range of sizes: Particle Size Distribution: Typically 1.5 inches down to fines: Typically 1.5 inches down to fines: Compaction Requirement: 95% …
Revised 08/2015 SECTION 32 11 23 AGGREGATE BASE COURSE PART 1 GENERAL 1.01 SECTION INCLUDES A. The WORK to be performed includes the preparation of the aggregate base course foundation; and the production, stockpiling, hauling, placing, and compacting of aggregate base course. ... g. T99, Standard Specification for the …
302.3.1.1 Aggregate base course shall be coarse aggregate of either crushed stone, or crushed gravel, or crushed asphalt concrete, or crushed Portland cement concrete, or any combination, and natural sand, the combination of materials conforming to the requirements of ASTM D2940 and the plans and specifications, as authorized by the ENGINEER.
Manufactured aggregate works well—crushed recycled concrete aggregate can also work well. Tolerances on the base course are +0 inches and minus 1 inch for Class 1 through 3 floors (typical low tolerance floors) or +0 inches and minus ¾ inches for higher tolerance floors.
equivalent to P-209 Crushed Aggregate Base Course. b. Chemical Stabilization. Provide the specific chemical stabilization material designated in the ... Each area will be accepted for density when the field density is at least 98 percent of the density standard of the FDR base course in accordance with ATM 412. The inplace field density will be -
regardless of the maximum aggregate size specified in this method. U, for example, the minus No. 4 fraction of a given material is found to have a maximum laboratory density of 135 pcf and the plus No. 4 fraction a bulk specific gravity of 2.64, a plot of the theoretical maximum density "D" of the entire sample for various percentages of
Section 304—Aggregate Base or Surface Course Description 304.01 Work. Furnish, haul, and place aggregate base or surface course on the ... INGS; except, if crushed aggregate products are being produced and mineral filler, binder, or additives are required, uniformly blend during crushing. ... Compact each layer of aggregate to a density of at ...
208–3.6 ACCEPTANCE SAMPLING AND TESTING FOR DENSITY. Aggregate base course will be accepted for density on a lot basis. A lot will consist of one day's …
Crushed Aggregate Base Course . 1. Description. Construct a foundation course for a surface course or for other base courses, composed of crushed aggregate materials as described in this specification, in one or more courses, in conformity with the typical sections shown on the plans, and to the lines and grades as established by the …
3.1 Design of Aggregate Composition of CSRM. The brick-concrete construction waste is crushed and screened to form recycled masonry aggregates (RMA) with continuous gradation. The particle composition of RMA is shown in Table 1.The liquid limit W L of fine-grained soil below 0.6 mm is 27.3%, the plastic limit W P is 19.8%, and …
1.5.2.3 Moisture-Density Determinations 1.5.2.4 Field Density Tests 1.5.2.5 Wear Test 1.5.2.6 Flat and Elongated Pieces 1.5.2.7 Soundness 1.5.2.8 Fractured Faces ... [AGGREGATE BASE COURSE] [AND/OR][GRADED CRUSHED AGGREGATE BASE COURSE] FOR FLEXIBLE PAVING 05/22 ***** NOTE: This guide specification covers …
the Soils & Aggregates Sectionof the Materials & Tests Division . For q uestions or comments, please call 512 -506-5907. FLEXIBLE BASE . Flexible base is a granular, unbound material placed as a base course in the pavement structure. The base course serves multiple functions, including :
item 202 – crushed aggregate base course 202.1 Description This Item shall consist of furnishing, placing and compacting crushed gravel, crushed stone or crushed rock on a prepared subgrade/subbase in one or more layers in accordance with this Specification and lines, grades, thickness and typical cross-sections shown on the Plans or as ...
Promote rapid drainage and resistance to frost action for base and subbase courses. Therefore, although it may not be the "best" aggregate gradation, a maximum density gradation does provide a common reference. A widely used equation to describe a maximum density gradation was developed by Fuller and Thompson in 1907. Their …
If any density test is below requirements, two additional tests will be taken within 5 ft. of the failing test location and the average of the three tests will be used as the value for the …
Base course – Layer of crushed stone aggregate. Asphalt base course – Optional lower asphalt layer, often omitted. ... What is the optimal density for compacted asphalt base course layers? Shoot for 92-96% density compared to lab-molded specimens. At least 92% ensures suitable strength to reinforce wearing courses against …
Crushed Surfacing Base Course 2,950 1.48 3,700 1.85 Screened Gravel Surfacing 3,700 1.85 *Gravel Base 3,400 – 3,800 1.70 – 1.90 Permeable Ballast 2,800 1.40 ... The specific gravity of the aggregate will affect the weight of aggregate in the completed mix. [2] Quantities shown do not provide for widening, waste from stockpile, or thickened ...
Asphalt concrete base (ACB), also called asphalt treated base (ATB), is a dense-graded HMA with a larger nominal maximum aggregate size (1 inch) intended for use as a base course or binder course (see Figure 1).
Does any one have scientific data to use for the density of aggregate base rock? Several sources state that "most natural" aggregates have particle densities between 150 and 181 (lb/ft^3).
Aggregate Base Course (ABC) is a construction material used in road, highways, pavements and various other infrastructure projects. ... ABC is typically made up of a mixture of crushed stone, …
GRADED AGGREGATE BASE 204-1 Description. Construct a base course composed of graded aggregate. 204-2 Materials. Use graded aggregate material, produced from Department approved sources, which yields a satisfactory mixture meeting all the requirements of these Specifications after it has been crushed and processed as a part …
Installing the Base; Using the two open-graded aggregates that were discussed earlier in this post, we will prepare the base of our project by installing a 6″ to 8″ minimum of compacted ASTM #57 (3/4″ Crushed …
Structural Uses of Aggregate Base. 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 …
Crusher run gravel, also known as crusher run, crush 'n run, or graded aggregate base (GAB), refers to a type of crushed stone aggregate material that provides foundational support and drainage for …
Acme Sand & Gravel 7777 E 22nd Street Building 3 Tucson, Arizona 85710-6434 (520) 296-six two three one sales Store hours: Monday - Friday 7:00 - 4:00
aggregate. This will result in a material that is uniform both in gradation and water content ... Testing for density in the top surfacing course shall be ... SS 4-04 .3(6) Keystone Keystone may be used as needed to provide a tight surface for ballast, gravel base, crushed surfacing base course, or any other surfacing. If the Contractor's ...
200-6.1.2 Multiple Course Base: Clean the first course of foreign material, then blade and bring it to a surface cross-section approximately parallel to the finished base. Before spreading any material for the upper courses, allow the Engineer to make density tests for the lower courses to determine that the required compaction has been obtained.
