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class 2 aggregate base gradation notes example

Gradation Test - Pavement Interactive

1. Obtain an aggregate sample of adequate mass from one of the following locations: aggregate stockpiles, bins, dump trucks, conveyor belt, or the roadway. 2. Mix and reduce the sample (Figure 6) to an amount suitable for testing. This process of reducing a sample size is often referred to as "splitting" the sample (Video 1).

5 Aggregate Specifications and Requirements

as noted on the Classification of Aggregates table. Class AP is the highest class and is assigned to aggregates which meet the requirements for all INDOT uses. Some INDOT contracts specify type AP aggregates for use in on-grade application of portland cement concrete. Parameters concerning type AP aggregate are contained in ITM 210. Aggregates

Standard Specification for Concrete Aggregates1

4.2.5 When the order is for coarse aggregate: The grading (size number) (see 10.1 and Table 2), or alternate grading as agreed between the purchaser and aggre-gate supplier. The class designation (see 11.1 and Table 3), Whether the restriction on reactive materials in 11.2 applies,


Feb 21, 2018 · GRADING & BASE MANUAL (Note: Use with the 2018 standard specifications. Use the 2016 Grading and Base Manual with the 2016 and prior standard specifications.) Published by Geotechnical Section Grading & Base Unit February 21, 2018

Inspection & Sampling Procedures for Fine & Coarse Aggregates

The weight of the sample depends on the maximum particle size of the material being inspected. As a rule, a larger top size material the larger the sample. A 25 lb sample of No. 2 coarse aggregate would not be as representative of the material as a 25 lb sample of natural sand. TWO IMPORTANT DEFINITIONS TO REMEMBER


May 07, 2020 · the laboratory evaluation. For fine aggregate a 100 lb. sample will be required. Samples should be graded to approximate the gradation specification for the intended use. Samples of coarse aggregate should have sufficient 12.5 mm (1/2") and 9.5 mm (3/8") material in the sample to ensure enough material to perform the

703 AGGREGATE - Pages

Supplement on file in the Office of the Director. E. Steel Slag Aggregate. Provide open-hearth (OH), basic oxygen furnace (BOF,) and electric arc furnace (EAF) steel slag aggregate (known as steel slag) conforming to the following requirements when 703.04 aggregate for asphalt concrete base or when any 703.05 aggregate is specified.


The gradation requirements in Table 701-2 are the outer acceptance limits for use from all supply sources. The gradation must be uniform from any one source and not change from the low to the high gradation limits. The fineness modulus of samples taken from proposed sources must be a minimum 2.50 and a maximum 3.10 when tested under AASHTO M 6.

Caltrans Specifications for Aggregate Base and Subbase

In February 2007, Sections 25 and 26 of the 2006 Standard Specifications were amended to allow, for Class 1, 2, 3, or 4 aggregate subbase and Class 2 or 3 aggregate base, up to 100 percent of any combination of: Processed asphalt concrete; Portland cement concrete; Lean concrete base ; Cement treated base

Chapter 4: Construction Details, Section 26: Aggregate Bases ...

Sample the aggregate base at the time it is deposited on the roadbed. Observe delivered aggregate base to ensure that it is clean of debris and other harmful materials. For requirements related to material quality, perform the tests at the frequencies shown in Section 6-1, "Sample Types and Frequencies," of this manual.

21 Spec - 301 Base, Subbase, and Subgrade Aggregate

TABLE 301-2 AGGREGATE BASE PHYSICAL PROPERTIES PROPERTY CRUSHED STONE CRUSHED GRAVEL CRUSHED CONCRETE RECLAIMED ASPHALT REPROCESSED MATERIAL BLENDED MATERIAL Gradation AASHTO 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 allowed not allowed not allowed not allowed Wear AASHTO T96 loss by weight

Section III: Surface Gravel

more controversy in aggregate testing than any other factor. Every effort must be made to make sure that the sample brought to a lab is truly representative of the material in the field.It is wise to follow national standards such as The Benefit of Testing Aggregates 41 Figure 9: Stack of sieves used for testing the gradation of aggregate.

305 Dense-Graded Base

305.2 Materials 305.2.1 General (1) Provide aggregate conforming to 301.2 for crushed stone, crushed gravel, crushed concrete, reclaimed asphalt, reprocessed material, or blended material. Provide QMP for dense-graded base as specified in 730. (2) Where the contract specifies or allows 1 1/4-inch base, do not place reclaimed asphalt, reprocessed


compacted sample • AASHTO T 304 ... Superpave Aggregate Gradation 100 0.075 .3 2.36 12.5 19.0 ... PTC.04.Physical Properties of Aggregates_class_2 Author: mehta


CLASS I BASE COURSE - Section 301 Class I Base Courses will be placed on a subgrade layer built in accordance with Specification Section 305. This design feature is the primary difference between Class I and Class II Base Courses. Class I Base Courses that are stabilized with cement must always be produced in a central mix plant.

Road Aggregate 101: Important Stuff

Road Aggregate 101: Nominal maximum and/or minimum sized stone in mix The nominal size distribution of an aggregate specification is defined as the range of sieve openings through which 100% of the aggregate can pass. Road Aggregate 101: Gradation or distribution of different sized stones Open graded aggregate vs. well graded aggregate.


Oct 19, 2006 · 2.1 Material Specifications Aggregate base course (Class 6) is one of seven classes of unbound aggregate bases that may be used. ABC Class 6 is the prevalent base type that is used through out the state. Specifications for aggregate bases are specified in Section 703.03 Aggregate for Bases in CDOT 2007 Standard

Section 815 Graded Aggregate

5. Gradation Grade the graded aggregate base, subbase, or shoulder material as follows: Sieve Size Percent Passing By Weight Group I Aggregates 2 in (50 mm) 100 1-1/2 in (37.5 mm) 97-100 3/4 in (19.0 mm) 60-95 No. 10 (2 mm) 25-50 (Note 1, 2 and 3) No. 60 (250 µm) 10-35

Graniterock: Technical Reports

Caltrans identifies five different Subbase types (Class 1 thru Class 5) in Section 25 and three different Aggregate Base types (¾″ & 1 ½″ Class 2, Class 3) in Section 26. Each of these materials is differentiated by variations of Gradation, R-Value, and Sand Equivalent.

Gradation Of Aggregates | Types of Aggregate Grading

Gradation of Aggregates Definition. The particle size distribution of an aggregate as determined by sieve analysis is termed as gradation of aggregates. If all the particles of an aggregate are of uniform size, the compacted mass will contain more voids whereas aggregate comprising particles of various sizes will give a mass with lesser voids.The particle size distribution of a mass of ...

Aggregate Gradation: Testing Tips and Tricks - Gilson Co.

The C136 test method notes that an accurate minus 75µm (No. 200) fraction cannot be determined unless the ASTM C117 practice is incorporated into the gradation test. These two tests work together when needed, and the removal of the fines from the total mass of the sample is mathematically corrected when calculating results.

02310 Aggregate Base Courses - Caltrain

Caltrans Standard Specifications, Section 26, Class 2 Aggregate Base, 3/4 inch maximum gradation. B. Aggregate Base used as sub-ballast: Aggregate shall conform to Caltrans Standard Specifications, Section 26, Class 2 Aggregate Base, 3/4 inch maximum gradation. In addition, the aggregate shall meet the following additional requirements: 1.

Specifications For CRUSHED AGGREGATE BASE COARSE #2 & #3 ...

Gradation No. 2 and Gradation No. 3 (Compaction Gravel). Reference Standards State of Wisconsin Department of Transportation Standard Specifications shall be used for reference when deemed necessary. Description Crushed Aggregate Base Coarse (Compaction Gravel) shall consist of one or more courses or layers of coarse aggregate, either

West Virginia Division of Highways

the Division of Highways has other sizes categorized as 'Classes'. Table 704.6.2 (Appendix IV, page 76) lists the gradation and quality requirements of the various classes of aggregate sizes. This table is read essentially the same as the AASHTO table. Gradation - Gradation is the particle size distribution of aggregates determined

A. ITEM - AGGREGATE BASE (Class 1 or 2)

A. ITEM - AGGREGATE BASE (Class 1 or 2) The Aggregate Base shall be Class **, and shall be as specified in Section 303 of the Standard Specifications. The estimated haul distance for the Aggregate Base is * miles. Please refer to the DESIGNER NOTES and consult with the Pavement Design Engineer prior to using either Items B or C below. B. ITEM ...

Grading and Base Home Page - Minnesota Department of ...

Grading and Base Manual and Guides. Grading & Base Manual; MnDOT Reclamation Inspector's Guide; Videos. Videos; Test Methods and Procedures. Speedy Moisture Test Safety Procedure: Transporting Calcium Carbide; Miscellaneous. Class 5/6 Glass Certification Example (2/27/2020) Glass Debris Examples (4/12/2001) DCP Suppliers; SCB FIVE Procedure (7 ...

Aggregate Testing Standards — EnviroMINE, Inc.

Dec 24, 2015 · Note: Concrete with fine aggregate near the 0.30 mm (No. 50) and below can have workability, pumping, and bleeding problems. To alleviate these issues admixtures may be added to the mix. The amounts of allowable deleterious substances in fine aggregate are described in Table 2. 3. Table 2 3 Limits for Deleterious Substances in Fine Aggregate for Concrete


2) Aggregate layer compaction; and 3) Loading. Specifically, a crushed limestone having low plasticity fines and compacted to 95% of the maximum laboratory density was identified as a best practice and can be used at