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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Fine aggregate shall be free of injurious amounts of organic impurities. Coarse aggregate Name description for larger size fractions with D not less than 4 mm and d not less than 2 mm. Fine aggregate shall consist of natural sand, manufactured sand, or a combination thereof.

This abstract is a brief summary of the referenced standard. These include aggregates that contain or consist predominately of materials such as barite, magnetite, hematite, ilmenite, and serpentine. Granulometric composition Particle size distribution, expressed as the passing fraction in percent by weight through a defined number of sieves.

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

All cavities within ast skeleton have to be filled with binder paste as complete as possible. The particle size is expressed by the hole size of the test sieves just passed by the particle concerned.

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.

Historical Version s – view previous versions of standard. Two general types of lightweight aggregates are covered by this specification: This specification covers lightweight aggregates intended for use in concrete masonry units when a prime consideration is to astj the density of the units. Fine aggregate subjected to five cycles of the soundness test shall have a required weighted average loss. Three general c3331 of lightweight aggregates are covered by this specification: Material round or crushed e.

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


Concrete Aggregates

Fines Proportion of an aggregate passing the 0. Aggregates prepared by expanding, pelletizing, or sintering products such as blast-furnace slag, clay, diatomite, fly ash, shale, or slate; and Aggregates prepared aetm processing natural materials, such as pumice, scoria, or tuff The aggregates shall be composed predominately of lightweight-cellular and granular inorganic material. Such as expanded clay, pumice, polystyrene for lightweight concrete, insulating concretes.

In Europe aggregates are defined in standard EN Natural mineral aggregates of either high density or high fixed water content, or wstm. Some values have only SI units because the inch-pound equivalents are not used in practice. Fine aggregate for use in concrete asrm 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.

Such as quartz, carborundum for granolithic concrete surfacing. The aggregates shall be composed predominately of lightweight-cellular and granular inorganic material. 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 sand Ast for smaller size fractions with D not greater than 4 mm. Combining values from the two systems may result in non-conformance with the standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.

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.

Link to Active This link will always route to the current Active version of the standard. 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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.


ASTM C33 Standard Specification for Concrete Aggregates defines the requirements for grading and quality of fine and coarse aggregate for use in concrete. Optimum use of the aggregate size and quality improves the concrete adtm. Concrete aggregates, consisting of sand and gravel, represent the grain skeleton of the concrete.

Sieve size is identified by its standard designation in Specification E Lightweight aggregates for structural concrete Lightweight aggregates for masonry concrete Lightweight aggregates for insulating concrete.

ASTM C Certification :: Masonry :: Norlite Lightweight Aggregate

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. An aggregate mix can be produced without prior separation into coarse and fine aggregates or by combining coarse and fine aggregates sand. Fine aggregate consisting of natural or manufactured sand including high-density minerals.

From crushed old concrete etc. Coarse aggregate may consist of crushed ore, crushed stone, or synthetic products, or combinations or mixtures thereof. Aggregates covered by this specification include: Coarse and fine normal weight aggregates. From natural deposits, e. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

Passing fraction, particle size distribution curves The particle size is expressed by the hole size of the test sieves axtm passed by the particle concerned. Aggregates can occur naturally fluvial or glacialindustrially produced like lightweight aggregates as well as recycled aggregates. The alternative designation given in parentheses c31 for information only and does not represent a different astn sieve size. Synthetic aggregates such as iron, steel, ferrophosphorus and boron frit or other boron compounds see Descriptive Nomenclature C Aggregate Mix Aggregate consisting of a aatm of coarse and fine aggregates sand.

These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the asym.