碩士 / 義守大學 / 土木與生態工程學系 / 105 / Sand is an important bulk material for construction. Sand is excavated from river, land, sea, or imported from other countries. Shape, strength and other physical characteristics of sea sand are similar to those of land and river sand, but sea sand, when not washed, has high Chloride ion contents that will result in fast rebar corrosion in reinforced concrete. In the 70s and 80s of Taiwan, some real estate developers built houses with unwashed sea sand and greatly endangered the structural safety of the houses. Taiwan has since prohibited sea sand applications in construction. Nevertheless, many other countries have allowed washed (de-chloride) sea sand applications for concrete to cope with the diminishing supply of river and land based sand. To ensure sustainable supply of sand, Taiwan should consider sea sand a valuable material and use it for construction with careful administration. Aiming at perceiving cognition and attitude of general public and the industry towards the new policy to prevent disputes and doubts, this study examined current international sea sand applications, and investigate current sea sand status in Taiwan.
Study results show that industry has sufficient understanding of the characteristics of sea sand and have positive attitude toward its use, while general public still lacks correct perception and appears to be more conservative. Making people recognize current applications of sea sand in construction around the world and improving environmental awareness could result in better acceptance of sea sand utilization in construction.
| Identifer | oai:union.ndltd.org:TW/105ISU05731004 |
| Date | January 2017 |
| Creators | Chin-Chun Lin, 林晉群 |
| Contributors | Kuo-Liang Lin, 林國良 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 81 |
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