| Summary: | 碩士 === 國立嘉義大學 === 土木與水資源工程學系研究所 === 100 === Abstract
Concrete is one of the largest consumption and wide use constructive material in the world nowadays. In every part of our daily life involve the concrete directly or indirectly. The concrete material has already become the foundation of modern engineering construction. The greatest shortcoming of ordinary concrete is its heavy dead weight and it made its usage to be limited. The adoption of lightweight aggregate concrete which use lightweight aggregate combining with cement paste was able to solve the heavy dead weight problem of ordinary concrete. Ceramsite concrete which use ceramsite to substitute coarse aggregate in ordinary concrete is one kind of lightweight aggregate concrete. Ceramsite concrete is light and has heat insulation efficiency and firing prevention. Nevertheless, the researches concerning heat insulation of ceramsite concrete was few.
Ceramsite concretes with 0%, 20%, 40%, 60%, 80%, 100% substituting rate of ceramsite were adopted to explore the variations of the substituting rate of ceramsite with the efficiency of heat insulation of ceramsite concrete and to determine the optimal substituting rate of ceramsite for ceramsite concrete under the consideration of compression strength, heat insulation and economy.
The test results show the efficiency of heat insulation of ceramsite concrete increases with the increase of the substituting rate of ceramsite. The usage of 40 percent of the substituting rate of ceramsite would be the best choice under the consideration of compression strength, heat insulation and economy.
Keywords: lightweight aggregate concrete, Ceramsite concrete, efficiency of heat insulation
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