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dc.contributor.authorWu, DSen_US
dc.contributor.authorPeng, YNen_US
dc.date.accessioned2014-12-08T15:40:21Z-
dc.date.available2014-12-08T15:40:21Z-
dc.date.issued2003-09-01en_US
dc.identifier.issn0008-8846en_US
dc.identifier.urihttp://dx.doi.org/10.1016/S0008-8846(03)00059-0en_US
dc.identifier.urihttp://hdl.handle.net/11536/27553-
dc.description.abstractThis research used cement pastes with a low water/blaine ratio (W/b = 0.27). Rice husk ashes (REA) burned at 700 and 850 degreesC, silica fume, silica sand (Ottawa standard sand), etc., were the added ingredients. Wet-mixed steam injection (WMSI) was at five different temperatures: 65, 80, 120, 150 and 180 degreesC. We investigated cement pastes with added silica-rich materials. For different WMSI temperatures and times, we explored the relations between compressive strength, hydration products, and pozzolanic reaction mechanism. From scanning electron microscopy (SEM) and EDS, we know that hydration products become very complicated, depending on the WMSI temperatures and times. It is difficult to determine the direct effects on the strength based on changes in the products. Experimental results, however, clearly showed that the compressive strength was worst for 80 degreesC and best for 180 degreesC. High-temperature WMSI is best with 4-h presteaming period and 8-h retention time. Curing in saturated limewater for 28 days did not increase the strength. The three types of silica-rich materials used in this research all participated in the reaction during high-temperature WMSI; they helped to increase the strength. Addition of Ottawa standard sand resulted in the best strength, followed by addition of RHA, while addition of silica fume was worse than the others. Specimens treated with high-temperature WMSI would swell slightly if they were placed in air. This was different from normal-temperature curing. (C) 2003 Elsevier Science Ltd. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectcuringen_US
dc.subjecthydrationen_US
dc.subjectmicrostructureen_US
dc.subjectshrinkageen_US
dc.titleThe macro- and micro properties of cement pastes with silica-rich materials cured by wet-mixed steaming injectionen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/S0008-8846(03)00059-0en_US
dc.identifier.journalCEMENT AND CONCRETE RESEARCHen_US
dc.citation.volume33en_US
dc.citation.issue9en_US
dc.citation.spage1331en_US
dc.citation.epage1345en_US
dc.contributor.department土木工程學系zh_TW
dc.contributor.departmentDepartment of Civil Engineeringen_US
dc.identifier.wosnumberWOS:000220484700006-
dc.citation.woscount4-
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