Fine Aggregate Requirements

Fine Aggregate Requirements


Jun 23, 2014 · Aggregate should have the following qualities Quality Requirements of Aggregate Aggregates should be strong, hard, dense, durable, clear and free from veins and adherent coating. Aggregates should be free from injurious amounts of disintegrated pieces, alkalis, vegetable matter and other deleterious substances.

Specification of Fine Aggregate | Quality and Grading of ...

Fine Aggregate Fine aggregate/ coarse sand consists of natural sand, crushed stone sand or crushed gravel stone dust. It should be hard, durable chemically inert, clean and free from organic matter, not containing any appreciable amount of clay balls or pellets and other harmful impurities i. e. alkaline, salt, mica, decayed vegetation, lumps etc.

Grading Requirements of Fine Aggregates - Parameters every ...

Oct 04, 2019 · Fine aggregates, one of the principal constituents of concrete, are generally natural sand or crushed stone particles that pass through 4.75mm sieve (Sieve#4). The grading which is also known as sieve analysis is simply an exploration of particle size distribution and represented as % passing from each sieve of fine aggregate.

Aggregate Quality Requirements for Pavements

38 Aggregate Quality Requirements for Pavements recycled coarse and fine aggregates, these limits are 10 kg/m3 for impurities such as plasters, clay lumps and other impurities of densities less than 1,950 kg/m3, and 2 kg/m3 for asphalt, plastics, paints, cloth, paper, wood, and similar material particles retained on 1.2 mm sieve, as well as other impurities of densities less than …

Section 902 AGGREGATES -

Coarse Aggregate Requirements. a. Coarse aggregate includes all aggregate particles greater than or retained on the ½-inch sieve. b. The physical requirements for coarse aggregate are as specified in Table 902-2 for Class 6AAA and the following: i. Maximum 24 hour soak absorption of 2.50 percent; ii.

Aggregates for Concrete - University of Memphis

For adequate consolidation of concrete, the desirable amount of air, water, cement, and fine aggregate (that is, the mortar fraction) should be about 50% to 65% by absolute volume (45…

4 Aggregate Specifications and Requirements

There are two general types of requirements for aggregate: quality and gradation. Physical quality requirements are all specification provisions other than gradation or usage requireme nts. Section 904.02 defines the acceptable limits for all uses of fine aggregates. Fine aggregates are not divided into classes.

Aggregate in Concrete - The Concrete Network

Fine aggregate should fall within gradation limits provided in ASTM C 33, Section 6. If there is a deficiency in a locally available fine aggregate, concrete may benefit from the addition of air entrainment, additional cement, or a supplemental cementitious material (SCM) to …

5 Aggregate Specifications and Requirements

The specifications for aggregates are detailed in Section 904 and other sections for the various types of construction. These specifications are to be followed when inspecting aggregates. There are two general types of requirements for aggregate: quality and gradation.


The nominal maximum aggregate size shall be 13.2 mm for concrete patches, refacing and overlays 100 , mm or less in thickness. When the thickness of the repair exceeds 100 mm, the nominal maximum aggregate size shall be 19 mm. Grading of the coarse aggregate shall be within the limits shownin Table 4.

Standard Specification for Fine Aggregate for Asphalt ...

This specification covers fine aggregate for use in bituminous paving mixtures. The aggregate shall be sampled to meet the requirements prescribed. Grading, fineness modulus and plasticity index shall be tested to meet the requirements prescribed. This abstract is a brief summary of the referenced standard.

Is ASTM C33 The Right Sand for My Project?

The standard addresses both fine aggregates (including natural sand, manufactured sand or a combination of these) and course aggregates (gravel, crushed gravel, crushed stone and similar items.) The aggregate materials must be screened down to the appropriate sizes, which range from 4.75 mm to a #200 sieve.

Use of recycled fine aggregate in concretes with durable ...

Highlights Recycled fine aggregate obtained from crushed waste concrete. Recycled concrete with variable content of recycled fine aggregate. Mechanical and durable behaviour. The compressive strengths of recycled and conventional concretes are similar. The durable behaviour of recycled concretes is as good as that of conventional one.

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volume of fine aggregate will be acceptable, provided fine aggregate meets minimum insoluble residue of 60 percent; and processing or manufacturing of calcareous sand removes deleterious coatings and unsound materials.

4.5.2 Porosity and Absorption of Aggregates. • The porosity of aggregate, its permeability, and absorption influence the bonding between aggregate and cement paste, the resistance of …

Grading Requirements of Fine Aggregates - Iamcivilengineer

Sep 21, 2019 · The fine aggregates shall have not more than 45% passing any sieve and retained on the next consecutive sieve of those shown in the aforementioned table. Concrete with fine aggregate grading near the minimums for percent passing the Sieve No.50 and Sieve No.100 sometimes have difficulties with workability, pumping or excessive bleeding.

Aggregate Bulletin Test Data

Aggregate Bulletin Test Data Soils and Aggregate Technology Division 7450 Traffic Drive Hanover, Maryland 21076 ... Test Frequency and Sample Quantity Requirements Aggregate Category Use Required Tests Specifications Test Frequency[1] Material Quantity/Type Coarse General ... and Absorption of Fine Aggregate . Maryland State Highway ...

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