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[1]童格军,庞建勇,姜平伟,等.复掺轻骨料纤维喷射混凝土力学及导热性能试验研究*[J].中国安全生产科学技术,2021,17(10):92-98.[doi:10.11731/j.issn.1673-193x.2021.10.014]
　TONG Gejun,PANG Jianyong,JIANG Pingwei,et al.Experimental study on mechanical and thermal conductivity properties of compound lightweight aggregate fiber shotcrete[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(10):92-98.[doi:10.11731/j.issn.1673-193x.2021.10.014]
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复掺轻骨料纤维喷射混凝土力学及导热性能试验研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年10期
页码:
92-98
栏目:
职业安全卫生管理与技术
出版日期:
2021-10-31

文章信息/Info

Title:
Experimental study on mechanical and thermal conductivity properties of compound lightweight aggregate fiber shotcrete
文章编号:
1673-193X(2021)-10-0092-07
作者:
童格军; 庞建勇; 姜平伟; 黄金坤
（1.安徽理工大学 土木建筑学院，安徽 淮南 232001；
2.淮河能源集团，安徽 淮南 232001）
Author(s):
TONG Gejun;  PANG Jianyong;  JIANG Pingwei;  HUANG Jinkun
(1.School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan Anhui 232001,China;
2.Huai He Energy Group,Huainan Anhui 232001,China)
关键词:
轻骨料纤维喷射混凝土; 陶粒; 陶砂; 聚丙烯纤维; 性能
Keywords:
sprayed concrete compounding with lightweight aggregate fiber;  ceramsite;  ceramic sand;  polypropylene fiber;  properties
分类号:
X947；TU528
DOI:
10.11731/j.issn.1673-193x.2021.10.014
文献标志码:
A
摘要:
为有效隔绝高地温公路隧道、深部高温巷道施工过程中的围岩散热，利用正交试验方法，以不同复合陶粒、陶砂掺量、聚丙烯纤维为影响因素，设计出1种隔热效应的轻骨料纤维喷射混凝土（Lightweight Aggregate Fiber Shotcrete，LAFS），进行含水率、抗压、劈裂抗拉及导热性能试验，并借助X射线衍射、扫描电镜对LAFS进行机理分析。结果表明：3种因素对LAFS力学及导热性能的影响程度均为陶粒掺量>陶砂掺量>聚丙烯纤维掺量，本试验条件下，复合双掺陶粒、陶砂分别取代石子、砂子的最佳体积率为12%，6%，聚丙烯纤维的最佳掺量范围为0.2%~0.3%。建立的LAFS各性能预测模型可为工程应用LAFS确定其配比时提供试验依据。
Abstract:
In order to effectively isolate the heat dissipation of surrounding rock during the construction of high ground temperature highway tunnel and deep high temperature roadway,a lightweight aggregate fiber shotcrete (LAFS) with the heat insulation effect was designed by using the orthogonal test method with different composite ceramsite,ceramic sand content and polypropylene fiber as influencing factors.The tests of water content,compressive strength,splitting tensile strength and thermal conductivity were carried out,and the mechanism of LAFS was analyzed by using the X-ray diffraction and scanning electron microscope.The results showed that all the influence degree of three factors on the mechanical and thermal conductivity propertied of LAFS was ceramsite content > ceramsite sand content > polypropylene fiber content.Under the experimental conditions,the optimal volume ratio of compound double-doped ceramsite and ceramsite sand to replace stone and sand was 12% and 6%,respectively,and the optimal content range of polypropylene fiber was 0.2%~0.3%.The established property prediction model of LAFS can provide experimental basis for the engineering application of LAFS and the determination of its ratio.

参考文献/References:

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相似文献/References:

备注/Memo

备注/Memo:
收稿日期： 2021-01-07
* 基金项目： 国家安全监管总局安全生产重大事故防治关键技术科技项目(Anhui-003-016AQ);安徽省高校自然科学研究重大项目(KJ2015ZD20);2015年度矿山地下工程教育部工程研究中心开放基金课题(2015KF05)；淮南市科技计划重大创新平台及创新人才团队专项（2017A055）
作者简介： 童格军，硕士研究生，工程师，主要研究方向为矿建技术和管理。
通信作者： 庞建勇，博士，教授，主要研究方向为地下工程支护技术。
更新日期/Last Update: 2021-11-03