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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Two general types of lightweight aggregates are covered by this specification: Aggregates covered by this specification include: Lightweight aggregates for structural concrete Lightweight aggregates for masonry concrete Lightweight aggregates for insulating concrete.

ASTM C Lightweight Aggregates for Concrete Masonry Units | CTLGroup

Recycled aggregate Aggregate made from mechanically processed inorganic material previously used as a building material i. Fine aggregate subjected to five cycles of the soundness test shall have a required weighted average loss. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard.

All cavities within this skeleton have to be filled with binder paste as complete as possible. Sieve size is identified by its standard designation in Specification E Fine aggregate shall consist of natural sand, manufactured sand, or a combination thereof. Such as barytes, iron ore, steel granulate for heavy concrete e. Synthetic aggregates such as iron, steel, ferrophosphorus and boron frit or other boron compounds see Descriptive Nomenclature C Such as expanded clay, pumice, polystyrene for lightweight concrete, insulating concretes.

Aggregate Mix Aggregate consisting of a mixture of coarse and fine aggregates sand. 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. Fine aggregate consisting of natural or manufactured sand including high-density minerals. Filler rock flour Aggregate predominantly passing the 0. Material round or crushed e. 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.


Link to Active This link will always route to the current Active version of the standard. From natural deposits, e. Coarse and fine normal weight aggregates. Natural mineral aggregates of either high density or high fixed water content, or both. Granulometric composition Particle size distribution, expressed as the passing fraction in percent by weight through a defined number of sieves.

For high-quality concrete they are cleaned and graded in industrial facilities by mechanical processes such as crushing, washing, screening and mixing together. 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 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.

Concrete Aggregates

In Europe aggregates are defined in standard EN This abstract is a brief summary of the referenced standard. This standard is very comprehensive and to give more details than in the list below would be outside the scope of this document.

From crushed old concrete etc. Some values have only SI units because the inch-pound equivalents are not used in practice.

This specification covers lightweight aggregates intended for use in concrete masonry units when a prime consideration is to reduce the density of the units. Coarse aggregate shall consist of gravel, crushed gravel, crushed stone, air-cooled blast furnace slag, or crushed hydraulic-cement concrete, or a combination thereof. Coarse aggregate Name description for larger size fractions with D not less than 4 mm and d not less than 2 mm.

The particle size is expressed by the hole size of the test sieves just passed by the particle concerned.

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

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. These include aggregates that contain or consist predominately of materials such as barite, magnetite, hematite, ilmenite, and serpentine.


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

Important terms from the standard with additional notes: Concrete aggregates, consisting of sand and gravel, represent the grain skeleton of the concrete. The aggregates shall not contain excessive amounts of deleterious substances, as determined by organic atm, staining, and loss on ignition tests.

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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 aggregates shall be composed predominately of lightweight-cellular and granular inorganic material. Combining values from the two systems may result in non-conformance with the standard.

Coarse aggregate may consist of crushed ore, crushed stone, or synthetic products, or combinations or mixtures thereof. 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. 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.

Such as quartz, carborundum for granolithic concrete surfacing. ASTM C33 Standard Specification for Concrete Aggregates defines the requirements for grading and quality of fine and coarse aggregate for use in concrete. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

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