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. Two general types of lightweight asfm are covered by this specification: 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. This specification covers lightweight aggregates intended for use in concrete asmt units when a prime consideration is to reduce the density of the units.
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. All cavities within this skeleton have to be filled with binder paste as complete as possible. Fine c313 shall consist of natural sand, manufactured sand, or a combination thereof.
These include aggregates that contain or consist predominately of materials such as barite, magnetite, hematite, ilmenite, and serpentine.
Synthetic aggregates such as iron, steel, ferrophosphorus and boron frit or other boron compounds see Descriptive Nomenclature C Combining values from the two systems may result in non-conformance with the standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Fine aggregate subjected to five cycles of the soundness test shall have a required weighted average loss.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Granulometric composition Particle size distribution, expressed as the passing fraction in percent by weight through a defined number of sieves. From crushed old concrete etc. Recycled aggregate Aggregate made from mechanically processed inorganic material previously used as a building material i.
Fine aggregate consisting of natural or manufactured sand including high-density minerals.
Aggregate Mix Aggregate consisting of a mixture of coarse and fine aggregates sand. This abstract is a brief summary of the referenced standard. Aggregates can occur naturally fluvial or glacialindustrially produced like lightweight aggregates as well as recycled aggregates. This standard is very comprehensive and to give more details than in the list below would be outside the scope of this document.
Filler rock flour Aggregate predominantly passing the 0.
Concrete Aggregates | Sika AG
Aggregates prepared by expanding, pelletizing, or sintering products such as blast-furnace ast, clay, diatomite, fly ash, shale, or slate; and Aggregates prepared by processing natural materials, such as pumice, scoria, or astmm The aggregates shall be composed predominately of lightweight-cellular and granular inorganic material. The aggregates shall not contain excessive amounts of deleterious substances, as determined by organic impurities, staining, and loss on ignition tests.
Three general types of lightweight aggregates are covered by this specification: For asym concrete they are cleaned and graded in industrial facilities by mechanical processes such as crushing, washing, screening and mixing together. ASTM does not give any warranty express or implied or make any representation that the aetm of this abstract are accurate, complete or up to date. Coarse aggregate Name description for larger size fractions with D not less than 4 mm and d zstm less than 2 mm.
In Europe aggregates are defined in standard EN From natural deposits, e. Material round or crushed e. Coarse aggregate shall consist of gravel, crushed gravel, crushed stone, air-cooled blast furnace slag, or crushed hydraulic-cement concrete, or a combination thereof. Concrete aggregates, consisting of sand and gravel, represent the grain skeleton of the concrete.
The aggregates shall be composed predominately of lightweight-cellular and granular inorganic material. Natural mineral aggregates of either high density or high fixed water content, or both.
Such as expanded clay, pumice, polystyrene for lightweight concrete, insulating concretes. An aggregate mix can be produced without prior separation into coarse and fine aggregates or by combining coarse and fine aggregates sand.
Such as quartz, carborundum for granolithic concrete surfacing.