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碩士 === 國立中央大學 === 土木工程學系 === 105 === ASTM C1778 was introduced in 2014 to reduce the risk of deleterious alkali-aggregate reaction in Concrete. Two types of approaches, performance-based and prescriptive, are used for selecting appropriate preventive measures. In this thesis, ASTM C1293 and ASTM C12...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2017
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| Online Access: | http://ndltd.ncl.edu.tw/handle/f2vj9e |
| Summary: | 碩士 === 國立中央大學 === 土木工程學系 === 105 === ASTM C1778 was introduced in 2014 to reduce the risk of deleterious alkali-aggregate reaction in Concrete. Two types of approaches, performance-based and prescriptive, are used for selecting appropriate preventive measures.
In this thesis, ASTM C1293 and ASTM C1260 are conducted with aggregates from major basins in Taiwan to validate if ASTM C1567 is applicable to evaluate the SCM replacement amount under the requirement of performance-based approach in ASTM C1778. Three types of aggregates are evaluated with ASTM C1778 to get the requied amounts of SCM replacement with both performance-based and prescriptive approaches.
Results show that ASTM C1567 can be applied with most aggregates in Taiwan and conservative mitigating measures are suggested. For common types of SCM in Taiwan, the suggested value from prescriptive approach gives higher values than performance-based approach. Therefore, prescriptive approach is effective and applicable in Taiwan for AAR mitigation.
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