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dc.contributor.authorShi, Caijun
dc.contributor.authorWang, Dehui
dc.contributor.authorHe, Fuqiang
dc.contributor.authorLiu, Meng
dc.date.accessioned2013-02-28T08:36:14Z
dc.date.available2013-02-28T08:36:14Z
dc.date.issued2012-08
dc.identifier.citationRESOURCES CONSERVATION AND RECYCLING,2012,65:11-17zh_CN
dc.identifier.issn0921-3449
dc.identifier.urihttp://dx.doi.org/10.1016/j.resconrec.2012.04.005
dc.identifier.uriWOS:000307156800002
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/15007
dc.description.abstractSteam curing of concrete blocks is an energy extensive process and contributes to a significant portion of the block production cost. CO2 curing of concrete blocks consumes CO2, reduces energy consumption and produces dimensionally more stable products. This study investigated the strength development and weathering properties of steam- and CO2-cured full size lightweight concrete blocks. Some freshly molded lightweight concrete blocks were taken from a block manufacture plant and cured in a CO2 curing tank in lab. Steam-cured lightweight concrete blocks were randomly taken from the same plant. Several hundreds of concrete blocks after steam and CO2 curing were stockpiled outside for winter exposure. The compressive strength of CO2-cured blocks was similar to that of steam-cured ones. It continued to increase when blocks were placed in a moist environment after steam and CO2 curing. However, steam-cured blocks showed faster strength development rate than CO2-cured ones did, and they behaved the same during the outdoor winter exposure, CO2-cured blocks demonstrated lower drying shrinkage and water absorption than steam-cured ones after 180 days of outdoor winter exposure. This indicated that CO2-cured concrete blocks had better dimensional stability, but similar weathering properties to steam-cured ones. (C) 2012 Elsevier B.V. All rights reserved.zh_CN
dc.description.sponsorshipNational Natural Science Foundation of China [50978093, 51072050]; Chinese National 973 Program [2009CB6231001]; New York State Energy Research and Development Authority (NYSERDA)zh_CN
dc.language.isoenzh_CN
dc.publisher0921-3449zh_CN
dc.subjectConcrete blockszh_CN
dc.subjectCO2 curingzh_CN
dc.subjectWeatheringzh_CN
dc.subjectCompressive strengthzh_CN
dc.subjectDrying shrinkagezh_CN
dc.titleWeathering properties of CO2-cured concrete blockszh_CN
dc.typeArticlezh_CN


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