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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Coarse and fine normal weight aggregates. 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. It is of high importance to design a reasonable combination of the different materials and their corresponding fractions in order to achieve x331 continuous combined grading curve.
Sieve size is identified by its standard designation in Specification E An aggregate mix can be produced without prior separation into coarse and fine aggregates or by combining coarse and fine aggregates sand.
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 zstm, 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 expanded clay, pumice, polystyrene for lightweight concrete, insulating concretes. This standard is very comprehensive and to give more details than in the list below would be outside the scope of this document. Important terms from the standard with additional notes: Fines Proportion of an aggregate passing the 0. Lightweight aggregates shall be tested, and c33 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.
This specification covers lightweight aggregates intended for use in concrete masonry units when a prime consideration is to reduce the density of the units. Such as barytes, iron ore, steel granulate for heavy concrete e. This abstract is a brief summary of the referenced standard. Link to Active This link will always route to the current Active version of the standard. The aggregates shall be composed predominately of lightweight-cellular and granular inorganic material.
Lightweight aggregates for structural concrete Lightweight aggregates for masonry concrete Lightweight aggregates for insulating concrete. The aggregates shall not contain excessive amounts of deleterious substances, as determined by organic impurities, staining, and loss on ignition tests.
Concrete aggregates, consisting of sand and gravel, represent the grain skeleton of the concrete. 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. Two general types of lightweight aggregates are covered by this specification: The particle size c31 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. Aggregate Mix Aggregate consisting of a mixture of coarse and fine aggregates sand. All cavities within this skeleton have to be filled with binder paste as complete qstm possible.
Coarse aggregate may consist of crushed ore, crushed stone, or synthetic products, or combinations or mixtures thereof.
ASTM C 331—05 Specification for Lightweight Aggregates for Concrete Masonry Units (PDF Download)
In Europe aggregates are defined in standard EN Natural mineral aggregates of either high density or high fixed water aetm, or both. Some values have only SI units because the inch-pound equivalents are not used in practice.
Aggregates covered by this specification include: From natural deposits, e. Optimum use of the aggregate size and quality improves the concrete quality. Material round or crushed e. Combining values from the two systems may result in non-conformance with the standard. 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.
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. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. Filler rock flour Aggregate predominantly passing the 0. ASTM C33 Standard Specification for Concrete Aggregates defines the requirements for grading and quality of fine and coarse aggregate for use in concrete. Historical Asrm s – view previous versions of standard.
Fine aggregate subjected asym five cycles of the soundness test shall have a required weighted average loss. 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.
ASTM C Lightweight Aggregates for Concrete Masonry Units | CTLGroup
Fine aggregate sand Designation for smaller size fractions with D not greater than 4 mm. From crushed old concrete etc. The alternative designation given in parentheses is for information only and does not represent a different standard sieve size.
Such as quartz, carborundum for granolithic concrete surfacing. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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. Three general types of lightweight aggregates are covered by this specification: