FUNDAMENTAL STUDY ON DEVELOPMENT OF PRECAST CONCRETE PRODUCT UTILIZING WASTE GLASS

• Published in: Cement Science and Concrete Technology Vol. 67; no. 1; pp. 224 - 230
• Main Authors: UCHIDA, Mika, TAKATA, Ryuichi, NONAKA, Tsuguhiro, SATO, Shushi
• Format: Journal Article
• Language: Japanese
• Published: Japan Cement Association 25.02.2014
• Subjects: ASR; Expansion property; Mortar bar method; Pessimum; Primary curing conditions; Waste glass
• ISSN: 0916-3182; 2187-3313
• DOI: 10.14250/cement.67.224

This study evaluated the Alkali Silica Reaction（call ASR, here after）expansion property of waste glass from the viewpoint of replacement ratio, particle distributions, and initial curing conditions assumed to utilize the waste glass for precast concrete product. As a result, the particle size pessimum on ASR was confirmed when fine aggregate was replaced with homogeneous particle size of waste glass. As for the influence on replacement amount of waste glass to the characteristic of ASR expansion, the expansive reaction due to ASR was not confirmed while the replacement ratios of waste glass against fine aggregate were less than 40％, and it was confirmed that replacement ratio pessimum existed around 80％ replacement of waste glass against fine aggregate. As for the effect on initial curing condition to the ASR expansion, it was confirmed that steam curing could not inhibit the ASR expansion. On the contrary, pressure curing showed significant suppression effect against ASR expansion. Moreover, pressure curing affected a little to the mechanical properties of mortar rather than the results of steam curing. It was also clarified that curing time of pressure curing influenced to the strength development of mortar, therefore, it was concluded that pressure curing could be applicable for the utilization of waste glass to the concrete.