ASTM C331 PDF

ASTM C Standard Specification for Lightweight Aggregates for Concrete Masonry Units. Lab ID: Use Evaluate lightweight materials intended for use in. ASTM C/CM: Standard Specification for Lightweight Aggregates for Concrete Masonry Units. ASTM C/CM Standard Specification for Lightweight Aggregates for Concrete Masonry Units. standard by ASTM International, 06/15/.

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Material round or crushed e. ASTM C Standard Specification for Aggregates for Radiation-Sielding Concrete covers special aggregates for use in radiation-shielding concretes in which composition or high specific gravity, or both, are of prime consideration.

For high-quality concrete they are cleaned and graded adtm industrial facilities by mechanical processes such as crushing, washing, screening and mixing together. Fine aggregate consisting of natural or manufactured sand including high-density minerals.

Concrete Aggregates

Sieve size is identified by its standard designation in Specification E ASTM C33 Standard Specification for C31 Aggregates defines the requirements for grading and quality of fine and coarse atm for use in concrete.

The alternative designation given in parentheses is for information only and does not represent a different asmt sieve size. Aggregates can occur naturally fluvial or glacialindustrially produced like lightweight aggregates as well as recycled aggregates. The aggregates shall be composed predominately of lightweight-cellular and granular inorganic material. An aggregate mix can be produced without prior separation into coarse and fine aggregates or by combining coarse and fine aggregates sand.

Filler rock flour Aggregate predominantly passing the 0. Concrete aggregates should have a strong bond with the hardened cement paste, should not interfere with the cement hardening, and should not have negative effect on concrete durability.

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Two general types of lightweight aggregates are covered by this specification: Granulometric composition Particle size distribution, expressed as the passing fraction in percent by weight through a defined number of sieves. Coarse aggregate shall consist of gravel, crushed gravel, crushed stone, air-cooled blast furnace slag, or crushed hydraulic-cement concrete, or a combination thereof.

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Lightweight aggregate under test shall meet requirements for clay lumps and friable particles, uniformity of grading, loose bulk density, uniformity of loose bulk density, popouts, resistance to freezing and thawing, and drying shrinkage. Lightweight aggregates for structural concrete Lightweight aggregates for masonry concrete Lightweight aggregates for insulating concrete. Recycled aggregate Aggregate made from mechanically processed inorganic material previously used as a building material i.

This standard is very comprehensive and to give more details than in the list below would be outside the scope of this document. This specification covers lightweight aggregates intended for use in concrete masonry units when a prime consideration is to reduce the density of the units. Fines Proportion of an aggregate passing the 0.

Such as quartz, carborundum for granolithic concrete surfacing. Lightweight aggregates shall be tested, and should not contain excessive amounts of deleterious substances; and should conform to the specified values of organic impurities, aggregate staining, aggregate loss of ignition, clay lumps and friable particles, loose bulk density, compressive strength, drying shrinkage, pop-outs, and resistance to freezing and thawing.

Link to Active This link will always route to the current Active version of the standard. Aggregate Mix Aggregate consisting of a mixture of coarse and fine aggregates sand. Coarse aggregate Name description for larger size fractions with D not less than 4 mm and d not less than ast, mm. Passing fraction, particle size distribution curves The particle size is expressed by the hole size of the test sieves just passed by the particle concerned.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided aetm part of the standard. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. It is informational only and not an official part of c31 standard; the full text of the standard itself must be referred to for asttm use and application. Aggregates covered by this specification include: Important terms from the standard with additional notes: These include aggregates that contain or consist predominately of materials such as barite, magnetite, hematite, ilmenite, and serpentine.

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Fine aggregate for use in concrete that will be subject to wetting, extended exposure to humid atmosphere, or contact with moist ground shall not contain any materials that are deleteriously reactive with the alkalis in the cement in amount sufficient to cause excessive expansion of mortar or concrete.

From crushed old concrete etc. Natural mineral aggregates of either high density or high fixed water content, or both. Aggregates prepared by expanding, pelletizing, or sintering products such as blast-furnace slag, clay, diatomite, fly ash, shale, or slate; and Aggregates prepared by processing natural materials, such as pumice, scoria, or tuff The aggregates shall be composed predominately of lightweight-cellular and granular inorganic material. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

In Europe aggregates are defined in standard EN Concrete aggregates, consisting of sand and gravel, represent the grain skeleton of the concrete. The aggregates shall be composed predominately of lightweight-cellular and granular inorganic material.

Fine aggregate sand Designation for smaller size fractions with D not greater than 4 mm.