撒布式混杂钢纤维再生混凝土力学性能
|
摘要
为了研究撒布式混杂钢纤维再生混凝土的力学性能,以混杂钢纤维撒布层数和掺量为参数,对混凝土试块进行抗压、劈拉及弹性模量试验。结果表明:随着混杂钢纤维撒布层数的增加,抗压强度整体变化不大,劈拉强度逐渐呈现上升趋势,弹性模量、拉压比、弹强比随层数变化规律不明显;但弹性模量均较普通再生混凝土降低,拉压比均较普通再生混凝土增大,弹强比有增大也有减小;随着混杂钢纤维掺量的增加,抗压强度先增大后减小,劈拉强度、弹性模量逐渐增大,拉压比、弹强比先减小后增大。撒布混杂钢纤维层后,再生混凝土的破坏由脆性转变为具有一定的塑性。
In order to study the mechanical properties of layer hybrid steel fiber recycled aggregate concrete,the compression,splitting and modulus of elasticity of concrete blocks were tested with the number of layers and the content of hybrid steel fiber as parameters. The results show that with the increase of layers of hybrid steel fibers,the overall compressive strength does not change much,the splitting tensile strength increases,and the elastic modulus,tension-compression ratio and modulus-strength ratio do not change obviously with layers,but the elastic modulus decreases,the tension-compression ratio increases and the elastic strength ratio increases or decreases as compared with the ordinary recycled aggregate concrete. With the increase of hybrid steel fiber content,the compressive strength first increases and then decreases,the splitting tensile strength and elastic modulus gradually increase,and the tension-compression ratio and modulus-strength ratio first decreases and then increases. After spraying hybrid steel fiber layer,the failure of recycled aggregate concrete changes from brittleness to plasticity.
In order to study the mechanical properties of layer hybrid steel fiber recycled aggregate concrete,the compression,splitting and modulus of elasticity of concrete blocks were tested with the number of layers and the content of hybrid steel fiber as parameters. The results show that with the increase of layers of hybrid steel fibers,the overall compressive strength does not change much,the splitting tensile strength increases,and the elastic modulus,tension-compression ratio and modulus-strength ratio do not change obviously with layers,but the elastic modulus decreases,the tension-compression ratio increases and the elastic strength ratio increases or decreases as compared with the ordinary recycled aggregate concrete. With the increase of hybrid steel fiber content,the compressive strength first increases and then decreases,the splitting tensile strength and elastic modulus gradually increase,and the tension-compression ratio and modulus-strength ratio first decreases and then increases. After spraying hybrid steel fiber layer,the failure of recycled aggregate concrete changes from brittleness to plasticity.
引文
1 Gao D Y,Zhang L J.Flexural performance and evaluation method of steel fiber reinforced recycled coarse aggregate concrete[J].Construction and Building Materials,2018(159):126-136
2章文姣,鲍成成,孔祥清,等.混杂纤维掺量对再生混凝土力学性能的影响研究[J].科学技术与工程,2016,16(13):106-112,123Zhang Wenjiao,Bao Chengcheng,Kong Xiangqing,et al.Experimental study on mechanical properties of hybrid fiber basic of recycled concrete[J].Science Technology and Engineering,2016,16(13):106-112,123
3张学兵,匡成钢,方志,等.钢纤维粉煤灰再生混凝土强度正交试验研究[J].建筑材料学报,2014,17(4):677-684,694Zhang Xuebing,Kuang Chenggang,Fang Zhi,et al.Orthogonal experimental study on strength of steel fiber reinforced fly ash recycled concrete[J].Journal of Building Materials,2014,17(4):677-684,694
4海然,李丹丹,惠存,等.流动性高强再生混凝土工作性和力学性能试验研究[J].科学技术与工程,2018,18(19):256-260Hai Ran,Li Dandan,Hui Cun,et al.Experimental study on workability and mechanical performance of liquid high strength recycled concrete[J].Science Technology and Engineering,2018,18(19):256-260
5朱梦良,孔泽仁,王佳.层布式钢纤维混凝土力学性能[J].交通科学与工程,2009,25(1):14-20Zhu Mengliang,Kong Zeren,Wang Jia.Mechanics character for the concrete reinforced by layered steel fiber[J].Journal of Transport Science and Engineering,2009,25(1):14-20
6蒋品.撒布式钢纤维混凝土研究[J].公路交通科技(应用技术版),2007(7):149-151Jiang Pin.Study on concrete reinforced by layered steel fiber[J].Highway Transportation Technology(Applied Technology Edition),2007(7):149-151
7 Zhang H L,Pei C C.Flexural properties of steel fiber types and reinforcement ratio for high-strength recycled concrete beams[J].Advances in Structural Engineering,2017,20(10):1512-1522
8刘慈,邓佳卓,崔佳伟,等.不同组合钢纤维再生砂浆力学性能试验研究[J].四川建材,2016,42(5):8-10Liu Ci,Deng Jiazhuo,Cui Jiawei,et al.Experimental study on mechanical properties of different composite steel fiber recycled mortar[J].Sichuan Building Materials,2016,42(5):8-10
9中华人民共和国建设部.普通混凝土力学性能试验方法标准:GB/T 50081-2002[S].北京:中国建筑工业出版社,2003Ministry of Construction of the People's Republic of China.Standard for test method of mechanical properties on ordinary concrete:GB/T50081-2002[S].Beijing:China Architecture&Building Press,2003
10陈爱玖,王静,杨粉.钢纤维再生混凝土抗压强度试验研究[J].混凝土,2012(4):64-66Chen Aijiu,Wang Jing,Yang Fen.Experiments of compressive strength mechanical properties of steel fiber recycled concrete[J].Concrete,2012(4):64-66
11周静海,李婷婷,杨国志.废弃纤维再生混凝土强度的试验研究[J].混凝土,2013(3):1-4Zhou Jinghai,Li Tingting,Yang Guozhi.Experimental research on mechanical properties of waste fiber recycled concrete[J].Concrete,2013(3):1-4
12朱彦鹏,邵永健.混凝土结构基本原理[M].北京:中国建筑工业出版社,2012Zhu Yanpeng,Shao Yongjian.Basic principles of concrete structures[M].Beijing:China Architecture&Building Press,2012
13杨粉,陈爱玖,王静,等.钢纤维再生混凝土劈拉、抗折强度试验研究[J].混凝土,2012(12):11-14Yang Fen,Chen Aijiu,Wang Jing,et al.Experiments of splitting tensile and flexural strength mechanical properties of steel fiber recycled concrete[J].Concrete,2012(12):11-14
2章文姣,鲍成成,孔祥清,等.混杂纤维掺量对再生混凝土力学性能的影响研究[J].科学技术与工程,2016,16(13):106-112,123Zhang Wenjiao,Bao Chengcheng,Kong Xiangqing,et al.Experimental study on mechanical properties of hybrid fiber basic of recycled concrete[J].Science Technology and Engineering,2016,16(13):106-112,123
3张学兵,匡成钢,方志,等.钢纤维粉煤灰再生混凝土强度正交试验研究[J].建筑材料学报,2014,17(4):677-684,694Zhang Xuebing,Kuang Chenggang,Fang Zhi,et al.Orthogonal experimental study on strength of steel fiber reinforced fly ash recycled concrete[J].Journal of Building Materials,2014,17(4):677-684,694
4海然,李丹丹,惠存,等.流动性高强再生混凝土工作性和力学性能试验研究[J].科学技术与工程,2018,18(19):256-260Hai Ran,Li Dandan,Hui Cun,et al.Experimental study on workability and mechanical performance of liquid high strength recycled concrete[J].Science Technology and Engineering,2018,18(19):256-260
5朱梦良,孔泽仁,王佳.层布式钢纤维混凝土力学性能[J].交通科学与工程,2009,25(1):14-20Zhu Mengliang,Kong Zeren,Wang Jia.Mechanics character for the concrete reinforced by layered steel fiber[J].Journal of Transport Science and Engineering,2009,25(1):14-20
6蒋品.撒布式钢纤维混凝土研究[J].公路交通科技(应用技术版),2007(7):149-151Jiang Pin.Study on concrete reinforced by layered steel fiber[J].Highway Transportation Technology(Applied Technology Edition),2007(7):149-151
7 Zhang H L,Pei C C.Flexural properties of steel fiber types and reinforcement ratio for high-strength recycled concrete beams[J].Advances in Structural Engineering,2017,20(10):1512-1522
8刘慈,邓佳卓,崔佳伟,等.不同组合钢纤维再生砂浆力学性能试验研究[J].四川建材,2016,42(5):8-10Liu Ci,Deng Jiazhuo,Cui Jiawei,et al.Experimental study on mechanical properties of different composite steel fiber recycled mortar[J].Sichuan Building Materials,2016,42(5):8-10
9中华人民共和国建设部.普通混凝土力学性能试验方法标准:GB/T 50081-2002[S].北京:中国建筑工业出版社,2003Ministry of Construction of the People's Republic of China.Standard for test method of mechanical properties on ordinary concrete:GB/T50081-2002[S].Beijing:China Architecture&Building Press,2003
10陈爱玖,王静,杨粉.钢纤维再生混凝土抗压强度试验研究[J].混凝土,2012(4):64-66Chen Aijiu,Wang Jing,Yang Fen.Experiments of compressive strength mechanical properties of steel fiber recycled concrete[J].Concrete,2012(4):64-66
11周静海,李婷婷,杨国志.废弃纤维再生混凝土强度的试验研究[J].混凝土,2013(3):1-4Zhou Jinghai,Li Tingting,Yang Guozhi.Experimental research on mechanical properties of waste fiber recycled concrete[J].Concrete,2013(3):1-4
12朱彦鹏,邵永健.混凝土结构基本原理[M].北京:中国建筑工业出版社,2012Zhu Yanpeng,Shao Yongjian.Basic principles of concrete structures[M].Beijing:China Architecture&Building Press,2012
13杨粉,陈爱玖,王静,等.钢纤维再生混凝土劈拉、抗折强度试验研究[J].混凝土,2012(12):11-14Yang Fen,Chen Aijiu,Wang Jing,et al.Experiments of splitting tensile and flexural strength mechanical properties of steel fiber recycled concrete[J].Concrete,2012(12):11-14
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |