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Shrinkage and Expansive Strain of Concrete with Fly Ash and Expansive Agent 被引量:15

Shrinkage and Expansive Strain of Concrete with Fly Ash and Expansive Agent
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摘要 The effects of fly ash and MgO-type expansive agent on the shrinkage and expan-sive strain of concrete with high magnesia cement were investigated. The results show that high volumes of fly ash may reduce the shrinkage strain of concrete and inhibit the expansive strain of concrete with MgO-type expansive agent, but can not eliminate the shrinkage of concrete. MgO-type expansive agent may produce expansive strain and compensate the shrinkage strain of concrete, re-lieve the cracking risk, but the hydration product of magnesia tends to get together in paste and pro-duce expansive cracking of concrete with high magnesia content according to SEM observation. The effects of fly ash and MgO-type expansive agent on the shrinkage and expan-sive strain of concrete with high magnesia cement were investigated. The results show that high volumes of fly ash may reduce the shrinkage strain of concrete and inhibit the expansive strain of concrete with MgO-type expansive agent, but can not eliminate the shrinkage of concrete. MgO-type expansive agent may produce expansive strain and compensate the shrinkage strain of concrete, re-lieve the cracking risk, but the hydration product of magnesia tends to get together in paste and pro-duce expansive cracking of concrete with high magnesia content according to SEM observation.
作者 高培伟
出处 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2009年第1期150-153,共4页 武汉理工大学学报(材料科学英文版)
基金 Funded by the National Natural Science Foundation of China (No. 60672166) the Bureau of Water Resources & Hydropower Research of China (No. SPKJ006-13-01-01)
关键词 high volumes of fly ash MgO-bearing expansive agent high magnesia cement volume stability high volumes of fly ash MgO-bearing expansive agent high magnesia cement volume stability
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  • 1王甲春,阎培渝.早龄期复合胶凝材料的裂纹扩展阻力分析[J].材料科学与工程学报,2005,23(5):478-482. 被引量:2
  • 2高培伟,卢小琳,唐明述.膨胀剂对混凝土变形性能的影响[J].南京航空航天大学学报,2006,38(2):251-255. 被引量:45
  • 3Spingenschmid R.Prevention of thermal cracking in concrete at early ages[M].London:E&FN Spon,1998:1-5.
  • 4ACI Committee 224.Control of cracking in concrete structures[M].Detroit:ACI Committee,2000:1-17.
  • 5Mehta P K.Durability-critical issues for the future[J].Concrete International,1997:4.
  • 6李明顺.混凝土结构裂缝问题[J].建筑科学,2000,19(3):42-42.
  • 7ACI Committee 207.Mass concrete for dams andother massive structures[J].ACI Journal,1970(67):273-309.
  • 8Emmors W F,Laoik O L,Hornby P L.Control of cracking in T.V.A.concrete gravity dams[J].Proc ASCE,1960(1):48-55.
  • 9Bouny V B,Aitcin P C.Shrinkage of concrete-shrinkage 2000[M].Bagneux,France:RILEM Publications S.A.R.L,2000:18-62.
  • 10Kovler K,Bentur A.International RILEM conference on early age cracking in cementitious systems[M].Bagneux,France:RILEM Publications S.A.R.L,2001:26-48.

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