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DTI-BPS adopts standard specification for aggregates for radiation-shielding concrete as a Philippine National Standard

DTI-BPS adopts standard specification for aggregates for radiation-shielding concrete as a Philippine National Standard

The Department of Trade and Industry’s Bureau of Philippine Standards (DTI-BPS) adopted the ASTM C637:2018 Standard specification for aggregates for radiation-shielding concrete as a Philippine National Standard (PNS).

PNS ASTM C637:2018 was approved for adoption upon the recommendation of the Bureau of Philippine Standards Technical Committee on Reinforced Concrete, Concrete and Pre-Stressed Concrete (BPS/TC 5). BPS/TC5 is composed of representatives from ACI-Philippines/Republic Cement Corp., Philippine Concrete Industry Association, University of the Philippines – Building Research Service, Technological University of the Philippines, Philippine Concrete Industry Association, ACS Manufacturing Corporation, Nippon Tech Builders, Omnico Consortium Inc., Makati Development Corporation, Department of Science and Technology - Industrial Technology Development Institute, Philippine GeoAnalytics Inc., Department of Public Works and Highways - Bureau of Research and Standards, National Housing Authority, and the Construction Industry Authority of the Philippines.

Published by ASTM in 2014, DTI-BPS adopted the standard in December 2018. PNS ASTM C637:2018 covers special aggregates for use in radiation-shielding concretes in which composition or high specific gravity, or both, are of prime consideration. Aggregates covered by specifications include the natural mineral aggregates of either high density or high fixed water content, or both. These include aggregates that consist predominately of materials such as barite, magnetite, hematite, ilmenite, and serpentine. Also included are synthetic aggregates such as iron, steel, ferrophosphorus and boron frit or other boron compounds, fine aggregate consisting of natural or manufactured sand including high-density materials. Coarse aggregate may consist of crushed ore, crushed stone, or synthetic products, or combinations or mixture thereof. Aggregates must meet the required uniformity of specific gravity and fixed water content. The materials must also meet the required chemical composition for serpentine, limonite, goethite, barite, ilmenite, hematite, magnetite, iron, ferrophosphorus, boron frit, boron carbide and calcium carbide (ASTM C637-14, Standard Specification for Aggregates for Radiation-Shielding Concrete, ASTM International, West Conshohocken, PA, 2014, www.astm.org). It is adopted as a PNS under the existing Memorandum of Understanding between the ASTM International and the BPS.

This standard will promote common understanding among stakeholders of the concrete industry.

The DTI-BPS is the National Standards Body of the Philippines. It is the country’s member to the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC).

The PNS ASTM C637:2018 may be secured for a minimal fee from the Standards Data Centre at (02) 791.3127 or 507.7307 and through This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

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