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PVA-ECC的最优配比及力学性能试验研究

Yu-guo ZHENG, Yuan-dong CUI, Wei-nan WANG,Yong ZHANG, Si-min LIU

湖南工程学院学报(自然科学版)(2014)

Cited 6|Views5
Abstract
考虑影响纤维增强水泥基复合材料(ECC)力学性能的关键因素,从抗压强度入手,基于水胶比、粉煤灰掺量、减水剂掺量等的变化,制作各批次的ECC立方体试件并进行抗压强度试验,探索ECC的力学性能随材料配比而变化的规律.研究结果表明,在其它因素都相同的条件下,PVA-ECC的立方体抗压强度随水胶比的增大而减小、随粉煤灰掺量的增加而减小、随减水剂掺量的增加先增大后减小.在普遍意义上,当水胶比为0.25、粉煤灰掺量为45%、减水剂掺量为0.5%时,PVA-ECC达到最优配比,此时立方体抗压强度达到最大.
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要点】:研究探讨了PVA-ECC立方体抗压强度随水胶比、粉煤灰掺量和减水剂掺量变化的规律,确定了最优材料配比,创新点在于明确了各因素对ECC力学性能的影响及其相互作用。

方法】:通过改变水胶比、粉煤灰掺量和减水剂掺量,制作不同配比的ECC立方体试件,并进行抗压强度试验。

实验】:实验使用了不同配比的ECC立方体试件,通过抗压强度试验得出结论,当水胶比为0.25、粉煤灰掺量为45%、减水剂掺量为0.5%时,PVA-ECC立方体抗压强度达到最大。