纤维水泥及制品_2021_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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纤维水泥及制品

海水冻融侵蚀下PVA-纳米SiO2混凝土性能试验研究

孔令康1,2，孙敏1,2

2021年第1期

摘要

引用本文

摘要：采用快冻法研究了海水冻融环境下PVA纤维和纳米SiO2对混凝土抗冻性能的影响。结果表明：每25次冻融循环结束后，不同类型混凝土的相对动弹性模量和抗压强度剩余比都有不同程度的下降；PVA纤维和纳米SiO2均能提升混凝土的抗冻性能；单掺PVA纤维或纳米SiO2试验组的抗冻性普遍低于PVA-纳米SiO2混掺试验组；混掺0.1% PVA纤维和1.0%纳米SiO2试验组的抗冻性最好。 Abstract: The effect of PVA fiber and nano-SiO2 on the frost resistance of concrete under the seawater freeze-thaw erosion was studied by the rapid freezing method. The results show that after every 25 freeze-thaw cycles, the relative dynamic elastic modulus and compressive strength residual ratio of various types of concrete decrease to varying degrees. Both PVA fiber and nano-SiO2 can improve the frost resistance of concrete. The frost resistance of the PVA fiber or nano-SiO2 test group is generally lower than that of the PVA-nano-SiO2 mixed test group. The frost resistance of the test group mixed with 0.1% PVA fiber and 1.0% nano-SiO2 is the best.

孔令康,孙敏.海水冻融侵蚀下PVA-纳米SiO2混凝土性能试验研究[J].混凝土与水泥制品,2021(1):50-53. KONG L K,SUN M.Experimental Study on the Performance of PVA-nano-SiO2 Concrete Under the Seawater Freeze-thaw Erosion[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):50-53.

竹叶纤维混凝土工作性和力学性能试验研究

王贵忠

2021年第1期

摘要

引用本文

摘要：研究了不同掺量（0、0.3%、0.5%、0.7%、0.9%和1.1%）的竹叶纤维对混凝土工作性和力学性能的影响。结果表明：随着竹叶纤维掺量的增加，混凝土的坍落度逐渐降低；混凝土吸水率随着竹叶纤维掺量增加而增加；竹叶纤维的掺入对混凝土抗压强度不利，但有利于提高混凝土的劈裂抗拉强度和抗折强度；综合考虑各种因素，建议竹叶纤维的最佳掺量取0.7%。 Abstract: The effects of bamboo leaf fiber with different content(0, 0.3%, 0.5%, 0.7%, 0.9% and 1.1%) on the workability and mechanical properties of concrete were studied. The results show that with the increase of bamboo leaf fiber content, the slump of concrete gradually decreases. The water absorption rate of concrete increases with the increase of bamboo leaf fiber content. The incorporation of bamboo leaf fiber is unfavorable to the compressive strength of concrete, but it can improve the splitting tensile strength and flexural strength of concrete. Considering various factors, it is recommended that the optimal content of bamboo leaf fiber is 0.7%.

王贵忠.竹叶纤维混凝土工作性和力学性能试验研究[J].混凝土与水泥制品,2021(1):54-56. WANG G Z.Experimental Research on Workability and Mechanical Properties of Bamboo Leaf Fiber Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):54-56.

玄武岩纤维水泥固化风积砂材料温缩系数影响因素研究

闫景晨，王贵来，张欣

2021年第1期

摘要

引用本文

闫景晨,王贵来,张欣.玄武岩纤维水泥固化风积砂材料温缩系数影响因素研究[J].混凝土与水泥制品,2021(1):57-60. YAN J C,WANG G L,ZHANG X.Study on Influencing Factors of Temperature Shrinkage Coefficient of Basalt Fiber Cement-solidified Aeolian Sand Materials[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):57-60.

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