Investigation on Properties and Flow Degree of Rubberized Mortar under Dynamic Load in Metro

Abstract:

It is one of focus topics that metro vibration affects foundations and environments. Assumed that crumb rubber mortar can be injected into foundations to form separate vibration layerbecause crumb rubber mortar is with better ductility and properties of vibration resistance,the layer decreases the effect of transportation load on foundation. Different diameters and volumes of rubber power were joined into the mortar to form rubber mortar by experiments. Then their flow degree and strenghth were measured and compared with ordinary mortar. The result shows that the rubber with smaller diameters can improve flow properties of mortar. When the volume inserting is ten percent of total sand volume, the flow property is best. The rubber mortar with best flow property was conserved for twenty-eight days. The damp property and impact resistant were determined under metro dynamic load. The experiment found that when the volume inserting is twenty percent of total volume, the damp value was improved twenty percent with twenty-five percent of absorbing energy and better separate vibration property. Therefore, the separate vibration layer can largely reduce the effect of vibration from metro and decrease the settlement of foundations of metro.

• Periodical: Advanced Materials Research (Volumes 1061-1062)
• Pages: 382-385
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1061-1062.382
• Online since: December 2014
• Authors: Jun Yu*, Hai Bin Zhu, Ke Zhong Wang
• Keywords: Crumb Rubber Mortar, Dynamic Load, Dynamic Property, Flow Degree, Settlement

References

[1] SEGRE N， MONTEIRO P J， SPOSITO G． Surface Characterization of Recycled Tire Rubber to Be Used in Cement Paste Matrix[J]．Journal of Colloid and Interface Science, 2002, 248 ( 2) : 521-523.

DOI: 10.1006/jcis.2002.8217

[2] ILKER BEKIR TOPCU，N AVCULAR．The behaviors of rubberized concrete[J]．Cement and Concrete Research, 1997, 27(12): 1893-1898.

DOI: 10.1016/s0008-8846(97)00204-4

[3] DIMITRION G．GOULIAS and A1-HOSAIN Ali．Non-Destructive Evaluation of Rubber Modified Concrete[J]. In Proceedings of a Special Conference, New York, 1997, 111-120.

[4] HUANG Zhenyu, JIANG Fu, XIAO Yan. Experimental study of dynamic compressive strenghth properties of rubber concrete[J]. Journal of natural disaster, 2007, 16(5): 135-142.

[5] WANF Rui, LIN Zhenrong, XIE Yongliang. Experimental study of rubber concrete toughness with SHPB[J]. Concrete and products, 2010(2): 13-20.

[6] Chen Zhenfu, Ke Guojun, HU Shaoquan. Study on little deformation damping of rubber concrete[J]. Noise and vibration control, 2004(3): 32-34.