Basalt fiber is a new inorganic fiber material with good ductility,high tensile strength,low density and outstanding economical advantages in building construction.It provides a new idea for the improvement of the mechanical properties of recycled concrete.For C30 strength grade of concrete,the compressive strength and splitting tensile strength of basalt fiber reinforced recycled aggregate concrete(RAC)with fiber dosage of 0.1%,0.2% and 0.3% were tested.Results show that the basalt fiber will reduce the fluidity of recycled concrete,and increase the friction between the cement matrices.Furthermore,it can also enhance the compressive strength and tensile strength of the recycled concrete.In particular,when the dosage of basalt fiber was 0.3% and the replacement ratio of coarse aggregate was 40%,the compressive strength reached the maximum for C30 strength grade of concrete.When the fiber dosage is 0.1%,the growth trend of the tensile strength of recycled concrete is stable.The study can provide- guidance and reference for the application of recycled aggregate in concrete engineering practice.
LI Xiaolu
,
JIN Baohong
,
YAO Yufeng
,
GUO Hongwei
. Mechanical properties of basalt fiber reinforced recycled aggregate concrete[J]. Journal of Hebei University(Natural Science Edition), 2017
, 37(3)
: 225
-230
.
DOI: 10.3969/j.issn.1000-1565.2017.03.001
[1] 董江峰,侯敏,王清远,等.碳纤维布加固薄壁钢管再生混凝土短柱的力学性能[J].四川大学学报(工程科学版),2012,44(S1):255-260.DOI:10.15961/j.jsuese.2012.s1.055. DONG J F,HOU M,WANG Q Y,et al.Structural behaviour of steel tube short columns filled with recycled aggregate concrete and externally strengthened with CFRP sheets[J].Journal of Sichuan University(Engineering Science Edition),2012,44(S1):255-260.DOI:10.15961/j.jsuese.2012.s1.055.
[2] 侯敏,董江峰,袁书成,等.玄武岩纤维再生混凝土及其轴压短柱力学性能分析[J].华北水利水电学院学报,2013,34(1):41-45.DOI:10.3969/j.issn.1002-5634.2013.01.010. HOU M,DONG J F,YUAN S C,et al.Experimental research of mechanical properties of basalt fiber aggregate concreteand its short columns under axial compression[J].Journal of North China Institute of Water Conservancy and Hydroelectric Power,2013,34(1):41-45.DOI:10.3969/j.issn.1002-5634.2013.01.010.
[3] 肖建庄,李佳彬,孙振平,等.再生混凝土的抗压强度研究[J].同济大学学报(自然科学版),2004,32(12):1558-1561. XIAO J Z,LI J B,SUN Z P,et al.Study on compressive strength of recycled aggregate concrete[J].Journal of Tongji University(Natural Science Edition),2004,32(12):1558-1561.
[4] 周静海,何海进,孟宪宏,等.再生混凝土基本力学性能试验[J].沈阳建筑大学学报(自然科学版),2010,26(3):464-468. ZHOU J H,HE H J,MENG X H,et al.Basic mechanical properties of recycled concrete experimental study[J].Journal of Shenyang Jianzhu University(Natural Science Edition),2010,26(3):464-468.
[5] ER T,JT S.Basalt fibers as new material for reinforcement and confinement ofconcrete[J].Solid State Phenomena,2016,249:79-84.
[6] JOHN B,SREEKANTA D,SARA YK,et al.Mechanical behavior of basalt fiber reinforced concrete[J].Construction and Building Materials,2016,124:878-886.
[7] LI W,XU J.Mechanical properties of basalt fiber reinforcedgeopolymeric concrete under impact loading[J].Materials Science & Engineering A,2009,505(1-2):178-186.
[8] 董江峰,侯敏,王清远,等.玄武岩纤维再生混凝土的基本力学性能[J].四川大学学报(工程科学版),2012,44(S2):9-12.DOI:10.15961/j.jsuese.2012.s2.022. DONG J F,HOU M,WANG Q Y,et al.Mechanical properties of basalt fiber reinforced recycledaggregate concrete[J].Journal of Sichuan University(Engineering Science Edition),2012,44(S2):9-12.DOI:10.15961/j.jsuese.2012.s2.022.
[9] 何松华.玄武岩纤维粉煤灰混凝土性能的研究[D].南昌:华东交通大学,2009.
[10] 吴钊贤,袁海庆,卢哲安,等.玄武岩纤维混凝土力学性能试验研究[J].混凝土,2009(9):76-78.DOI:10.3969/j.issn.1002-3550.2009.09.021. WU Z X,YUAN H Q,LU Z A,et al.Experimental research on mechanical properties of basalt fiberreinforced concrete[J].Concrete,2009(9):76-78.DOI:10.3969/j.issn.1002-3550.2009.09.021.
[11] 中华人民共和国行业标准.普通混凝土配合比设计规程( JGJ55—2011)[S].北京:中国建筑工业出版社,2011.
[12] 中华人民共和国行业标准.普通混凝土力学性能试验方法标准(GB/T50081—2002)[S].北京:中国建筑工业出版社,2003.
[13] 黄根来,孙志杰,王明超,等.玄武岩纤维及其复合材料基本力学性能试验研究[J].玻璃钢/复合材料,2006(1):24-27. HUANG G L,SUN Z J,WANG M C,et al.Experimental research on mechanical propertiesof basalt fiberandcomposites[J].Fiber Reinforced Plastics/Composites,2006(1):24-27.
[14] 何军拥,黄小清,田承宇.玄武岩纤维增强、阻裂性能的试验研究[J].混凝土与水泥制品,2011(3):36-39.
[15] 沈刘军,许金余,李为民,等.玄武岩纤维增强混凝土静、动力性能试验研究[J].混凝土,2008(4):66-69. SHEN L J,XU J Y,LI W M,et al.Experimental investigation on the static and dynamic behaviour of basalt fibers reinforced concrete[J].Concrete,2008(4):66-69.
