• June 24, 2019

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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ASTM C 331—05 Specification for Lightweight Aggregates for Concrete Masonry Units (PDF Download)

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Such as expanded clay, pumice, polystyrene for lightweight concrete, insulating concretes.

Fines Proportion of an aggregate passing the 0. 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.

Three general types of lightweight aggregates are covered by this specification: Such as quartz, carborundum for granolithic concrete surfacing. This standard is very comprehensive and to give more details than in the list below would be outside the scope of this document. These notes and footnotes excluding those in tables and figures ast, not be considered as requirements of the standard. Aggregate Mix Aggregate consisting of a mixture of coarse and fine aggregates sand.

Concrete Aggregates

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. Combining values from the zstm systems may result in non-conformance with the standard.


All cavities within this skeleton have to be filled with binder paste as complete as possible. 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.

Lightweight aggregates for structural concrete Lightweight aggregates for masonry concrete Lightweight aggregates for insulating concrete. Coarse aggregate Name description for larger size fractions with D not less than 4 mm and d not less than 2 mm. The aggregates shall not contain excessive amounts of deleterious substances, as determined by organic impurities, staining, and loss on ignition tests.

For high-quality concrete they are cleaned and graded in industrial facilities by mechanical processes such as crushing, washing, screening and mixing together. Fine aggregate c33 Designation for smaller size fractions with D not greater than 4 mm.

Aggregates can occur naturally fluvial or glacialindustrially produced like lightweight aggregates as well as recycled aggregates. Important terms from the standard with additional notes: Historical Version s – view previous versions of standard. Filler rock flour Aggregate predominantly passing the 0. This specification covers lightweight aggregates intended for use in concrete masonry units when a prime consideration is to reduce the density of the units.

Concrete aggregates, consisting of sand and gravel, represent the grain skeleton asstm the concrete. In Europe aggregates are defined in standard EN Coarse aggregate may consist of crushed ore, crushed stone, or synthetic products, or combinations or mixtures thereof.

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.


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. The alternative designation given in parentheses is for information only and does not represent a different standard sieve size. Some values have only SI units because the inch-pound equivalents are not used in practice. This abstract is a brief summary of the referenced standard.

Sieve size is identified by its standard designation in Specification 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. Fine aggregate consisting of natural or manufactured sand including high-density minerals. Fine aggregate subjected to five cycles of the soundness test shall have a required weighted average loss.

ASTM C —05 Specification for Lightweight Aggregates for Concrete Masonry Units (PDF Download)

Astj and fine normal weight aggregates. Recycled aggregate Aggregate made from mechanically processed inorganic material previously used as a building material i. 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.