Abstract
Taiwan is gifted with special geothermal resources, such as hot springs. In recent years, due to rapid development of the hot spring tourism and medical industry, massive constructions at the side slopes in hot spring areas are requiring the large amount of concrete material. Thus, the engineering properties of concrete material in the hot spring environment are an important research subject. Taiwan yields a large output of fly ash, slag and waste LCD glass annually. If these recycled materials can be added into concrete materials as mineral admixture, the construction quality will be improved, while contributing to waste reduction. Therefore, this study used the concrete without and with different recycled materials (e.g., slag, fly ash and glass waste powder) respectively to make specimens in fixed water-binder ratio W/B=0.44, and tested the compressive strength, splitting strength, ultrasonic pulse velocity and rate of volume change in general water curing and hot spring water curing conditions. The results showed that the strength deterioration and volume expansion of the concrete with recycled materials could be postponed in the hot spring water environment, and the glass waste powder had the best effect.
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