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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Fines Proportion of an aggregate passing the 0. Material round or crushed e. 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.

Aggregate Mix Aggregate consisting of a mixture of coarse and fine aggregates sand. Link to Active This link will always route to the current Active version of the standard. The alternative designation given in parentheses is for information only and does not represent a different standard sieve size. Coarse aggregate shall consist of gravel, crushed gravel, crushed stone, air-cooled blast furnace slag, or crushed hydraulic-cement concrete, or a combination thereof.

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 natural deposits, e. Two general types of lightweight aggregates are covered by this specification: Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Optimum use of the aggregate size and quality improves the concrete quality.

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

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

Fine aggregate subjected to atm cycles of the soundness test shall have a required weighted average loss. 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.


Coarse aggregate may consist of crushed ore, crushed stone, or synthetic products, or combinations or mixtures thereof. These include aggregates that contain or consist predominately of materials such as barite, magnetite, hematite, ilmenite, and serpentine.

Filler rock flour Aggregate predominantly passing the 0. Fine aggregate sand Designation for smaller size fractions with D aatm greater than 4 mm. Aggregates covered by this specification include: It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for x331 use and application.

This specification covers lightweight aggregates intended for use in concrete masonry units when a prime consideration is to reduce the density of the units. The aggregates shall be composed predominately of lightweight-cellular and granular inorganic material. This standard is very comprehensive and to give more details than in the list below would be outside the scope of this document.

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. Cc331 composition Particle size distribution, expressed as the passing fraction in percent by weight through a defined number of sieves. Lightweight aggregates for structural concrete Lightweight aggregates for masonry concrete Lightweight aggregates for insulating concrete.

Such as quartz, carborundum for granolithic aastm surfacing. All cavities within this skeleton have asgm be filled with binder paste as complete as possible. Recycled aggregate Aggregate made from mechanically processed inorganic material previously used as a building material i. Coarse and fine normal weight aggregates.

Concrete Aggregates

The particle size is expressed by the hole size of the test sieves just passed by the particle concerned. In Europe aggregates are defined in standard EN These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard.


Coarse aggregate Name description for larger size fractions with D not less than 4 mm and d not less than 2 mm. Natural mineral aggregates of either high density or high fixed water content, or both.

The aggregates shall not contain excessive amounts of deleterious substances, as determined by organic impurities, staining, and loss on ignition tests. This abstract is a brief summary of the referenced astj. Sieve size is identified by its standard designation in Specification E Fine aggregate shall be free of injurious amounts of organic impurities.

For high-quality concrete they are cleaned and graded in industrial facilities by mechanical processes such as crushing, washing, screening and mixing together. Historical Version s – view previous versions of standard.

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

It is of high importance to design a reasonable combination of the different materials and their corresponding fractions in order to achieve a continuous combined grading curve.

Fine aggregate shall consist of natural sand, manufactured sand, or a combination thereof. 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.

Concrete aggregates, consisting of sand and gravel, represent the grain skeleton of the concrete. Synthetic aggregates such as iron, steel, v331 and boron frit or other boron compounds see Descriptive Nomenclature C An aggregate mix can be produced without prior separation into coarse and fine aggregates or by combining coarse and fine aggregates sand.