산업부산물을 이용한 비소성 고화제 혼합토의 역학적 특성
Engineering Characteristics of Non-sintering Binder-stabilized Mixture using Industrial By-Products
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초록
This study investigated the engineering characteristics of non-sintering binder-stabilized mixtures consisting of different ratios of ahardening agent(3%, 6%, 9%, 12%) for recycling industrial by-products through several series of laboratory tests. The hardening agents consistedof two kinds of non-sintering binders(NSB-1, NSB-2), which were developed by using inter-chemical reactions among blast furnace slag,phospho-gypsum, and an alkali activator. In addition, ordinary Portland cement(OPC) was used to compare the engineering characteristics of thestabilized mixture. An unconfined compressive test showed that the unconfined compressive strength increased with the curing time and mixingratio. Experimental test results indicated that the 7-day strength of the NSB-1 mixture was similar to that of the OPC mixture. However, its28-day strength was higher than that of the OPC mixture. The secant module of elasticity showed a range of E50=(42–109)qu regardless of theagents. Based on the results of triaxial tests, the cohesion and friction angle increased with the mixing ratio.
Abstract
This study investigated the engineering characteristics of non-sintering binder-stabilized mixtures consisting of different ratios of ahardening agent(3%, 6%, 9%, 12%) for recycling industrial by-products through several series of laboratory tests. The hardening agents consistedof two kinds of non-sintering binders(NSB-1, NSB-2), which were developed by using inter-chemical reactions among blast furnace slag,phospho-gypsum, and an alkali activator. In addition, ordinary Portland cement(OPC) was used to compare the engineering characteristics of thestabilized mixture. An unconfined compressive test showed that the unconfined compressive strength increased with the curing time and mixingratio. Experimental test results indicated that the 7-day strength of the NSB-1 mixture was similar to that of the OPC mixture. However, its28-day strength was higher than that of the OPC mixture. The secant module of elasticity showed a range of E50=(42–109)qu regardless of theagents. Based on the results of triaxial tests, the cohesion and friction angle increased with the mixing ratio.
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