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中文摘要：
我国北方地区的混凝土工程是受冻害最严重的地区。采用正交试验法分析矿渣粉、粉煤灰、引气剂、聚丙烯纤维和再生粗骨料对再生混凝土抗冻性的影响规律，即：对比再生混凝土冻融循环次数0、200次的质量损失、相对动弹模量、抗压强度，找出对再生混凝土的相对动弹模量和抗压强度影响最大的因素，并对影响机理进行分析。
英文摘要：
The concrete engineering is worst affected by frost damage in north area of China.analysis of five factors （slag powder,fly ash,air-entraining agent,polypropylene fiber and recycled coarse aggregate） on the influence law of recycled concrete frost resistance by orthogonal test.Find out the most important influence factors on relative loss modulus and compressive strength of recycled concrete ,by compare the recycled concrete freeze-thaw cycle 0 times and 200 times,loss modulus and compressive strength,then analysis of the mech-anism of recycled concrete.
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The influence of the air-entraining water reducing agent on themechanical properties of the recycled
Analysis of hydraulicfracturing in concrete dam considering fluid–structure interaction usingXFEM-FV
Calculation of the Derivative of Interpolation Shape Function forThree-dimensional Natural Element M
Interface Stress Element Method and Its Application in Analysis of anti-sliding stability of gravity
The Numerical Simulation of the Crack Elastoplastic Extension Based on the Extended Finite Element M
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