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钢纤维替代自密实混凝土梁箍筋的试验研究 被引量:6
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作者 尤志国 丁一宁 王宝民 《建筑材料学报》 EI CAS CSCD 北大核心 2010年第5期595-600,共6页
研究了用钢纤维替代箍筋时,集中荷载作用对自密实混凝土梁破坏形态的不同影响,同时分析了钢纤维部分或全部替代箍筋的可行性.主要试验参数包括纤维掺量(0,25,50 kg/m3)和配箍率(0,0.13%,0.22%).利用普通钢纤维混凝土梁的截面平均极限剪... 研究了用钢纤维替代箍筋时,集中荷载作用对自密实混凝土梁破坏形态的不同影响,同时分析了钢纤维部分或全部替代箍筋的可行性.主要试验参数包括纤维掺量(0,25,50 kg/m3)和配箍率(0,0.13%,0.22%).利用普通钢纤维混凝土梁的截面平均极限剪应力经验公式对试验结果进行分析,并与ACI 318—02,Eurocode 2,GB 50010—2002,CECS 38:2004等国内外标准进行了对比.结果表明:掺入钢纤维能显著提高梁的截面平均极限剪应力,当钢纤维掺量和箍筋含量达到一定值时,它们的共同作用可使梁的破坏形态从脆性转变为延性,因而钢纤维能够部分替代箍筋. 展开更多
关键词 钢纤维自密实混凝土 截面平均极限剪应力 箍筋 破坏形态
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Semi-flowable self-consolidating concrete using industrial wastes for construction of rigid pavements in India:An overview 被引量:1
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作者 Bhupati Kannur Hemant Sharad Chore 《Journal of Traffic and Transportation Engineering(English Edition)》 EI CSCD 2023年第2期243-257,共15页
The construction of rigid pavements using conventionally vibrated concrete consumes a significant amount of energy as it requires rigorous vibrations.This also requires a high number of laborers and creates noise duri... The construction of rigid pavements using conventionally vibrated concrete consumes a significant amount of energy as it requires rigorous vibrations.This also requires a high number of laborers and creates noise during construction.Thus,a new kind of concrete called semi-flowable self-consolidating concrete(SFSCC)for pavement construction using slip-form paving technology is reviewed in this article.The SFSCC requires no energy for compaction as it gets compacted under its self weight.It also renders shape stability in the fresh state which is critical to expedite the construction in slip form concreting.The review focuses on the need,evolution,and requirement of the ingredient materials,mix design,and methods for testing the properties of SFSCC.Further,the utilization of industrial wastes in the construction industry and the production of self-consolidating concrete are discussed.The literature on the effect of different materials on the properties of such concrete and field studies in this context are discussed.Lastly,its suitability as pavement construction material either in normal rural roads or in low-volume village roads is discussed in the Indian context.The review reveals that relatively less amount of study on SFSCC in general and as a pavement material in particular is available in the literature and pursuant to this,creates a wide scope of research. 展开更多
关键词 sfscc SCC Industrial waste materials Concrete pavement Pavement construction
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