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- W2368981635 abstract "This paper summarizes the calculation and evaluation model of anti-cracking ability of concrete at home and abroad.Through synthesizing the relevant factors,analysis model of anti-cracking ability of concrete is established for the first time,and meanwhile,considering the time-change of concrete,evaluation model of anti-cracking of concrete and its structure are es-tablished,and adopting Kac as mathematical parameter on anti-cracking performance of concrete.Choose representative con-crete mixture proportions,such as flying ash,blast furnace slag,silica fume,expansion agent,shrinkage-reducing agent,Polypropylene fibre etc.Kac of them are calculated respectively.It is concluded that FA,slag,fibre,SRA and SRA+EA can improve anti-cracking performance,but silica fume can decrease anti-cracking performance by comparison on Kac,and among them,whiling to use shrinkage-reducing agent and expansion agent with combination can promote effectively anti-cracking performance of concrete.The calculation results of Ka c are in according with that of restraint-cracking experiments such as big-small steel rings,flat-restraint.However,if the early curing of concrete is inadequate by using expansion agents,the trend of Kac maybe reduced." @default.
- W2368981635 created "2016-06-24" @default.
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- W2368981635 date "2009-01-01" @default.
- W2368981635 modified "2023-09-25" @default.
- W2368981635 title "Analysis on the Evaluation Model of Anti-Cracking Ability of Concrete" @default.
- W2368981635 hasPublicationYear "2009" @default.
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