Evaluation of Taber Type Abrasion Test as Alternative Method for Abrasion Test Using Water Jet with Sand

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  • テーバー式摩耗試験による水砂噴流摩耗試験の代替性
  • テーバーシキ マモウ シケン ニ ヨル ミズ サ フンリュウ マモウ シケン ノ ダイタイセイ

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Abstract

The abrasion test using water jet with sand is now considered as a standard material test for construction and repair materials for agricultural water channels. Since the only one tester for this method is available and a test needs more than 10 hours, the Taber type abrasion test, which is widely used and needs only 20 minutes for a test, is examined as an alternative testing method. Mortar specimens with different particle sizes of aggregate, as well as specimens of hardened cement paste without aggregate, are tested by abrasion tests using water jet with sand and tests of Taber type. With abrasion tests using water jet with sand specimens with smaller size of aggregate are abraded more, but little difference in abrasion depth is observed by Taber type abrasion tests. Abraded surfaces of specimens show different mechanisms of abrasion in two kinds of tests, separations of aggregate in tests using water jet with sand, and scraping of aggregate in Taber type tests. Since abrasion in agricultural water channels consists of separation of aggregate, it is concluded that Taber type abrasion tests are not suitable especially to construction and repair materials for water channels.

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