日本建築学会技術報告集
Online ISSN : 1881-8188
Print ISSN : 1341-9463
ISSN-L : 1341-9463
材料施工
コンクリート用砂利・砂に含まれる有害物の試験方法の変遷に関する調査
阿部 道彦鹿毛 忠継真野 孝次
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ジャーナル フリー

2023 年 29 巻 72 号 p. 573-578

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Percentage of gravel and sand to all aggregates for concrete is decreasing, but yet large amount of them has been used in Japan. In this report, the history of test methods for fines, organic impurities, lightweight particles, clay lumps and soft pebbles as deleterious substances in gravel and sand was investigated. As the result of survey, it was confirmed that above test methods of Japan were established on the basis of ASTM test methods and then they developed in their own way in detail. The test methods for lightweight particles and soft pebbles in JIS were discontinued in 2015.

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