采用橡胶粉等体积代砂的方法,选择橡胶粉体积含量为5%、10%和12%,通过试验探讨了等抗压强度(40 MPa)条件下橡胶粉用量对碾压混凝土力学强度、抗裂性能和变形性能的影响及其变化规律.结果表明:橡胶粉的掺入使碾压混凝土的韧性得到改善,压缩破坏表现出明显的韧性破坏特征,碾压橡胶混凝土的立方体抗压强度、轴心抗压强度、抗拉强度和抗弯强度之间具有与普通混凝土相近的对应关系;等抗压强度条件下,碾压橡胶混凝土的抗弯强度、抗拉强度和极限拉伸值较不掺橡胶粉的碾压混凝土有所增大;橡胶粉的添加不会改善碾压混凝土的干缩性能,反而会使干缩变形速率和干缩变形量有所增大.
参考文献
| [1] | Siddique R,Naik T R.Properties of concrete containing scrap-tire rubber--An overview[J].Waste Management,2004,24(6):563-569. |
| [2] | Segrc N,Joekes I.Use of tire rubber particles as addition to cement paste[J].Cement and Concrete Research,2000,30(9):1421-1425. |
| [3] | Huang Baoshan,Li Guoqiang,Pang Su-Seng,John Eggers.Investigation into waste tire rubber-filled concrete[J].Journal of Materials in Civil Engineering,ASCE,2004,16(3):187-194. |
| [4] | 亢景付,韩春翠,张振利.碾压橡胶混凝土强度特性研究[J].天津大学学报,2008,41(7);763-768.Kang Jingfu,Han Chuncui,Zhang Zhenli.Experimental study on the strength characteristics of roller compacted rubcrete[J].Journal of Tianjin University,2008,41(7):763-768. |
| [5] | 亢景付,任海波,张甲祖.橡胶混凝土的抗裂性能和弯曲变形性能[J].复合材料学报,2006,23(6):158-162.Kang Jingfu,Ren Haibo,Zhang Pingzu.Cracking-resistance and flexural property of rubberized concrete[J].Acta Materiae Compositae Sinica,2006,23(6):158-162. |
| [6] | 熊杰,郑磊,袁勇.废橡胶混凝土抗压强度试验研究[J].混凝土,2004(12):40-42.Xiong Jie,Zheng Lei,Yuan Yong.Experimental study on compressive strength of rubberized concrete[J].Concrete,2004(12):40-42. |
| [7] | Olivares F H,Barluenga G,Bollati M,Witoszek B.Static and dynamic behavior of recycled tire rubber-filled concrete[J].Cement and Concrete Research,2002,32(10):1587-1596. |
| [8] | Topcu I B,Avcular N.Analysis of rubberized concrete as a composite materials[J].Cement and Concrete Research,1997,27(8):1135-1139. |
| [9] | Chung K H,Hong Y K.Introductory behavior of rubber concrete[J].Journal of Applied Polymer,1999,72(1):35-40. |
| [10] | Segre N,Joekes I.Rubber-mortar composite:Effect of composition on properties[J].Journal of Materials Science,2004,39(10):3319-3327. |
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