预处理椰壳纤维对水泥基材料性能的影响研究

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发布时间：2020-01-06 00:00:00

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预处理椰壳纤维对水泥基材料性能的影响研究

Study on the Influence of Pretreated Coir Fiber on the Properties of Cement-based Materials

2022年第5期

椰壳纤维；煮沸处理；碱处理；水泥基材料；拉伸性能；弯曲性能

Coir fiber; Boiling treatment; Alkali treatment; Cement-based material; Tensile property; Bending property

2022年第5期

10.19761/j.1000-4637.2022.05.061.06

国家自然科学基金青年基金项目（51902068）。

潘宜健1,2，王政1，刘雨时1

1.哈尔滨工业大学土木工程学院，黑龙江哈尔滨 150090；2.安徽省建筑设计研究总院有限责任公司，安徽合肥 230002

潘宜健1,2，王政1，刘雨时1

潘宜健,王政,刘雨时.预处理椰壳纤维对水泥基材料性能的影响研究[J].混凝土与水泥制品,2022(5):61-66.

PAN Y J,WANG Z,LIU Y S.Study on the Influence of Pretreated Coir Fiber on the Properties of Cement-based Materials[J].China Concrete and Cement Products,2022(5):61-66.

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摘要：采用碱溶液浸泡和煮沸对椰壳纤维进行预处理，研究了处理时长对椰壳纤维吸水率、表面形貌、拉伸强度、弹性模量和表面静摩擦力的影响，并将预处理椰壳纤维掺入到水泥基材料中，研究了预处理椰壳纤维对水泥基材料拉伸性能和弯曲性能的影响。结果表明：与未处理椰壳纤维相比，煮沸处理2 h或碱处理5 h后，椰壳纤维的吸水率分别降低了40.25%、48.56%，拉伸强度分别降低了3.26%、5.54%，弹性模量分别降低了8.71%、3.32%，表面静摩擦力分别提高了209.41%、262.35%；采用浓度为15%的有机硅烷溶液浸泡预处理椰壳纤维后，再将预处理椰壳纤维分别按质量比m碱处理∶m煮沸处理=3∶1、m碱处理∶m煮沸处理=1∶1混掺时，水泥基材料的拉伸强度、弯曲强度较空白组分别提高了76.08%、68.04%。 Abstract: The coir fiber was pretreated by soaking and boiling in alkali solution, and the effects of treatment time on water absorption, surface morphology, tensile strength, elastic modulus and surface static friction of coir fiber were studied. The pretreated coir fiber was incorporated into cement-based material, and the effect of the pretreated coir fiber on the tensile and bending properties of cement-based material was studied. The results show that compared with the untreated coir fiber, after boiling for 2 h or alkali treatment for 5 h, the water absorption of coir fiber decreases by 40.25% and 48.56%, the tensile strength decreases by 3.26% and 5.54%, the elastic modulus decreases by 8.71% and 3.32%, and the surface static friction increases by 209.41% and 262.35% respectively. After the pretreated coir fiber is soaked in organosilane solution with the concentration of 15%, and then the pretreated coir fiber is blended according to the mass ratio of malkali treatmen∶mboiling treatment=3∶1 and malkali treatmen∶mboiling treatment=1∶1, the tensile strength and flexural strength of the cement-based material is increased by 76.08% and 68.04% respectively compared with the blank group.

英文名 : Study on the Influence of Pretreated Coir Fiber on the Properties of Cement-based Materials

刊期 : 2022年第5期

关键词 : 椰壳纤维；煮沸处理；碱处理；水泥基材料；拉伸性能；弯曲性能

Key words : Coir fiber; Boiling treatment; Alkali treatment; Cement-based material; Tensile property; Bending property

刊期 : 2022年第5期

DOI : 10.19761/j.1000-4637.2022.05.061.06

文章编号 :

基金项目 : 国家自然科学基金青年基金项目（51902068）。

作者 : 潘宜健1,2，王政1，刘雨时1

单位 : 1.哈尔滨工业大学土木工程学院，黑龙江哈尔滨 150090；2.安徽省建筑设计研究总院有限责任公司，安徽合肥 230002

潘宜健1,2，王政1，刘雨时1

潘宜健,王政,刘雨时.预处理椰壳纤维对水泥基材料性能的影响研究[J].混凝土与水泥制品,2022(5):61-66.

PAN Y J,WANG Z,LIU Y S.Study on the Influence of Pretreated Coir Fiber on the Properties of Cement-based Materials[J].China Concrete and Cement Products,2022(5):61-66.

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摘要

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结论

参考文献

引用本文

Abstract: The coir fiber was pretreated by soaking and boiling in alkali solution, and the effects of treatment time on water absorption, surface morphology, tensile strength, elastic modulus and surface static friction of coir fiber were studied. The pretreated coir fiber was incorporated into cement-based material, and the effect of the pretreated coir fiber on the tensile and bending properties of cement-based material was studied. The results show that compared with the untreated coir fiber, after boiling for 2 h or alkali treatment for 5 h, the water absorption of coir fiber decreases by 40.25% and 48.56%, the tensile strength decreases by 3.26% and 5.54%, the elastic modulus decreases by 8.71% and 3.32%, and the surface static friction increases by 209.41% and 262.35% respectively. After the pretreated coir fiber is soaked in organosilane solution with the concentration of 15%, and then the pretreated coir fiber is blended according to the mass ratio of m_{alkali treatmen}∶m_{boiling treatment}=3∶1 and m_{alkali treatmen}∶m_{boiling treatment}=1∶1, the tensile strength and flexural strength of the cement-based material is increased by 76.08% and 68.04% respectively compared with the blank group.

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