双铺层不锈钢纤维导电混凝土力学性能及导电性能研究-《混凝土与水泥制品》杂志社

双铺层不锈钢纤维导电混凝土力学性能及导电性能研究

Study on Mechanical Performance and Conductive Property of Electrically Conductive Concrete with Double-layered Stainless Steel

浏览量:

关键词：

导电混凝土；双铺层不锈钢纤维；抗压强度；抗弯拉强度；电阻率；石墨

Key words：

Electrically conductive concrete; Double-layered stainless steel fiber; Compressive strength; Bending tensile strength; Resistiv

刊期：

２０16年第8期

DOI：

文章编号：

1000-4637（2016）08-55-03

基金项目：

作者：

白应华1，涂锐1，陈伟2

单位：

1.湖北工业大学土木工程与建筑学院，武汉 430064；2.武汉理工大学材料科学与工程学院，430070）

摘要

摘要：设计研发了一种新型的双层不锈钢纤维（DSSF）导电混凝土，该新型混凝土是一种多层结构，在2个不同的层中放置不锈钢纤维，用石墨颗粒或钢纤维对混凝土基体进行改性，并对其进行了抗压、抗弯拉及导电性能试验。结果表明，不锈钢纤维体积掺量为0.5%时，DSSF混凝土的抗压强度相对于素混凝土提高12%左右，抗弯拉强度相对于素混凝土提高26.92%。掺入不锈钢纤维及适量石墨颗粒后的DSSF混凝土其电阻率较素混凝土有数量级的减小。

Abstract: A new type of electrically conductive concrete with double-layered stainless steel fiber (DSSF) has been designed and developed. The concrete is designed as a multi-layer structure consists of two separate layers in stainless steel fibers. Graphite particles or steel fibers are used to modify the concrete matrix, compressive strength, bending tensile strength and conductive property are carried out on it. The results show that, compressive strength of DSSF concrete is increased by about 12% compared with that of plain concrete when volume content of stainless steel fiber is 0.5%, and the bending tensile strength of concrete is increased by 26.92% compared with that of plain concrete. The resistivity of DSSF concrete with stainless steel fiber and the amount of graphite particles is reduced by an order of magnitude compared with that of plain concrete.

结论

（1）不锈钢纤维掺量为0.5%时，双铺层不锈钢纤维混凝土的抗压强度较素混凝土提高12%左右，达到41.1MPa；抗弯拉强度较素混凝土提高26.92%，达到6.6MPa。

（2）双铺层不锈钢纤维导电混凝土可以以相对较少的纤维掺量获得良好的导电性能，在与基体导电材料（石墨、不锈钢纤维）复合后，可以使电阻率降至0.1～1Ω·m的范围内，满足路面融雪除冰功能要求。

（3）石墨较不锈钢纤维可更为有效地降低混凝土的电阻率。

参考文献

[1] 高平,陈伟,曹海琳.双铺层不锈钢纤维导电混凝土及其应用研究[D].武汉:武汉理工大学,2012.

[2] 回国臣,吴献.三向受压导电混凝土物理力学性能试验研究[J].混凝土,2014(1):24-27.

[3] 王凤池,张满园,宋文,等.钢渣混凝土导电及力学性能的试验研究[J].济南大学学报:自然科学版,2014(4):306-310.

[4] 卢珍,吴献,杨昆.炭黑碳纤维复相导电混凝土的导电性能研究[J].混凝土,2014(11):81-83.

[5] 徐令娜,赵庆新,李炜,等.碳纤维炭黑导电混凝土的接地特性研究[J].硅酸盐通报,2014(12):3366-3371.

[6] 张苡铭,俞乐华.钢纤维－石墨烯导电混凝土受弯过程的力－电效应试验研究[J].混凝土,2016(2):52-55.

[7] Chen, W. and Gao, P. Performances of Electrically Conductive Concrete with Layered Stainless Steel Fibers[C]. Proc. Sustainable Construction Materials,2012:164-172.

[8] Chen, W. and Li, Y.. Percolation of phases in hydrating cement paste at early ages: an experimental and numerical study.In: Palomo, A.,Zatagoza A., and Agui,et al. The Ⅻ International Congress on Cement Chemistry, Madrid, Editado por el Institute de Ciencias de la Construction Eduardo Torroja,2011:356.

[9] He, L. and Tjong S.-C.. Nonlinear electrical conduction in percolating systems induced by internal field emission[J].Synthetic Metals,2011,161(5-6):540-543.

[10] Lu, Z. and Fan, X.. Mechanical properties of layered steel fiber and hybrid fiber reinforced concrete[J]. Journal of Wuhan University of Technology-Materials Science Edition,2008,23(5): 733-736.

引用本文

上一个：劲性环梁式钢管混凝土节点恢复力模型

下一个：端锚CFRP-混凝土黏结界面受剪性能试验研究