prepared sub grade or sub base before proceeding with the placement of aggregate base course. B. The sub grade or sub base to receive aggregate base course, immediately prior to spreading, shall conform to the compaction and elevation tolerances indicated for the material involved and shall be free of standing water and loose or extraneous ...
Finally, click on the Calculate button. The calculated number of tons of aggregate will be returned. As with all Earth materials, densities will vary somewhat between different loads, but the default values assigned for Base Rock and Drain Rock are reasonable averages. You …
BASE COURSES Revised 2-00 3.01 AGGREGATE BASE COURSE (Cont'd.) 3.01.07 Placing and Compacting New Material (Cont'd.) The aggregate shall be compacted to at least 98 percent of the maximum unit weight. The moisture content shall be maintained within a tolerance of plus or minus one percent of optimum until the prescribed unit weight is obtained.
Estimated Aggregate Base Course (ABC) Cost Per Cubic Yard (CY) Material Description Cost (SY) 3) HMA Unit Weight of 0.055 Tons per Square Yard Inch (of thickness) Subgrade Preparation Subtotal = Grand Total = Estimated Subgrade Preparation Cost Per Square Yard (SY) Notes: Pavement Cost Calculator Department of Public Works, Engineering Division
Glossary. The terms and nomenclature used in the Aggregate Producer's database are as follows: % Abs - Absorption in percent. %Carb - Percent of gravel that is derived from carbonate rock sources.. ASR - Alkalai Silica Reactivity value as determined by AASHTO T 303.. baghse fines - Mineral filler collected in the baghouse of a particular asphalt plant, permitted for use after approval testing ...
Construction Aggregate Calculator. Enter the width, length, thickness, and product density and hit the "Calculate" button to calculate your estimate. If you do not know the product density, use the optional density estimator* or contact a local sales representative.
P-208, Aggregate Base Course Page 3 of 5 The base material shall be stockpiled, either at the plant or on the worksite, prior to placing and spreading on the prepared underlying course. (b) Materials of Proper Gradation. When the entire base course material from coarse to fine is secured in a uniform and well-graded condition and contains
Aggregate Base Course . 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.
base materials, such as dense-graded ag-gregates and asphalt concrete, creates a ... base. Coarse aggregate makes up 86% of the batch and the remaining 4% is w a t e r. Wa t e r -cement ratio is 0.39. When ... determine the unit weight of the concrete in the hardened state. Next, fill the cylin-
Section 815—Graded Aggregate 815.1 General Description This section includes the requirements for material to be used for base, subbase, or shoulder course material, and includes graded aggregate, unconsolidated limerock base, and crushed concrete base. 815.1.01 Related References A. Standard Specifications Section 800—Coarse Aggregate
Jun 09, 2005· I am converting (CY) of aggregate (for a road construction project) to (TONS). 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).
To coat and bond loose material particles on the surface of the base. To harden or toughen the base surface to provide a work platform for construction equipment. To plug capillary voids in the base course surface to prevent migration of moisture. To provide adhesion between the base course and the succeeding course.
1. If the Bid Schedule indicates a unit price for aggregate base course, the unit price method of measurement and payment will be as follows: a. Measurement: Aggregate base course will be measured for payment by the ton or cubic yard, as designated in the contract item, for each class of aggregate placed in the Work.
a PN, processed natural material; N, natural material; S, synthetic material b Natural aggregate listed for comparison. Heavyweight aggregates: Heavyweight concrete contains aggregates that are natural or synthetic which typically weigh more than 2,080 kg/m 3 and can range up to 4,485 kg/m 3.Heavy weight aggregate is most commonly used for radiation shielding, counterweights and other ...
Weight of Coarse Aggregate. The normal weight of stone aggregate in loose state is= 1400 to 1600 kg per cum, but for illustration an average value 1500 kg per cum is considered. Grading of coarse aggregate. Proper graded material should be used for achieving good bond stress.
ANALYSIS OF USING RECLAIMED ASPHALT PAVEMENT (RAP) AS A BASE COURSE MATERIAL by Robert Locander, P.E. Pavement Design Program Report No. CDOT-2009-5 Sponsored by Colorado Department of Transportation In Cooperation with the U.S. Department of Transportation Federal Highway Administration February 2009 Colorado Department of Transportation
1 SPECIFIC GRAVITY OF COARSE AGGREGATE AASHTO T 85 GLOSSARY Absorption: The increase in weight due to water contained in the pores of the material. Bulk Specific Gravity (also known as Bulk Dry Specific Gravity): The ratio of the weight in air of a unit volume of aggregate at a stated temperature to the weight in air of an equal volume
weight of rollers to compact the material to the required density. Compact the aggregate base course in-place to a field target density of at least 100 percent and a lower specification limit (L) of at least 97.0 percent of the maximum density of laboratory specimens prepared from samples of base course material delivered to the job site.
drawings should be referred to as "aggregate base course (ABC)" whenever a base course material with a California Bearing Ratio (CBR) of 80 is required. "Aggregate Base Course" should be retained in the title and the rest of the specification should be edited accordingly to retain the information necessary for this material. b.
Most of Harmony Sand & Gravel's products will weight approximately 2,840 pounds per cubic yard or about 1.42 tons per cubic yard. For estimating purposes, most Contractor's consider the yield to be 3,000 pounds per cubic yard or 1.5 tons per cubic yard.
Aggregate base course is an engineered mixture of coarse and fine aggregate designed to support heavy loads and is used in many applications such as foundations for highways and buildings as well as support of equipment on unpaved surfaces such as job site roads and oil well pads.
The unit weight of milled or processed RAP depends on the type of aggregate in the reclaimed pavement and the moisture content of the stockpiled material. Although available literature on RAP contains limited data pertaining to unit weight, the unit weight of milled or processed RAP has been found to range from 1940 to 2300 kg/m 3 (120 to 140 ...
FLEXIBLE BASE 247.1. Description. Construct a foundation course composed of flexible base. 247.2. Materials. Furnish uncontaminated materials of uniform quality that meet the requirements of the plans and specifications. Notify the Engineer of the proposed material sources and of changes to material …
Provide coarse aggregate free of coatings of clay and silt. Do not add soil materials such as clay, loam, or silt to compensate for a lack of fines in the aggregate. Do not blend overburden soil into the aggregate. Feed each material or size of material from an individual storage unit at a uniform rate.
(1) The department will pay for measured quantities at the contract unit price under the following bid items: ITEM NUMBER DESCRIPTION UNIT 310.0110 Base Aggregate Open-Graded TON 310.0115 Base Aggregate Open-Graded CY (2) Payment for Base Aggregate Open-Graded is full compensation for preparing the foundation; and for
Chapter 620 Design of Pavement Structure 620.01 General. 620.02 Estimating Tables. ... Consider the inclusion of crushed surfacing top course material for keystone when estimating quantities for projects having ballast course. Unit Dry Weight – Gravel Base and Surfacing Type of Material
The most recent Aggregate Base Course (ABC) unit weight test results performed by the NCDOT M&T Soils lab can be queried using this page. Use the drop down boxes to select the company and/or quarry submitting the sample. To see the results of all tests, click on the "Search" button without specifying a company or quarry.
Sep 24, 2017· The unit weight if different civil engineering materials including brick, cement, concrete and aggregate are as follows : Material Unit Weight Water 1000 Kg/ m3 Bricks (broken) 1420 Kg/ m3 Bricks(common) 1600 Kg/ m3 Cement(ordinary) 1440 Kg/ m3 Ce...
aggregate is the weight required to fill a contained or a specified unit volume, after it has been rodded to attain maximum packing. ASTM C29 gives the common methods of determining the Dry-Rodded Unit Weight that is also sometimes called the "bulk unit weight of aggregates" since the voids between the particles are included. It is ...