Physical and mechanical properties of Crumb Rubber Mortar(CRM)with interfacial modifiers

Abstract

Eight interfacial modifiers were used to improve the interfacial bonding strength between the crumb rubber and matrix of Crumb Rubber Mortar (CRM), and the physical and mechanical properties and microstructure of CRM were also studied. The results show that, the interfacial modifiers obviously improve the interface bonding strength between the crumb rubber and matrix and the whole strength of CRM, and silicone modified styrene-acryl ate-emulsion has the best effect. The rubber-cement matrix interface was proved by SEM that the interfacial modifiers treated rubber showed good adhesion to the matrix.

Keywords

crumb rubber mortar / mechanical properties / modification / functions / mechanisms

References

[1] Li Y., Wang L. The Research Progress of Portland Cement Concrete Containing Crumb Rubber[J]. Concrete, 2006, 4: 91-93.

[2] D P Pan, F Liu, L J li, et al. The Application and Research Survey of Crumb Rubber Concrete[J]. Rubber Industry, 2007, (3): 182–185 (in Chinese)

[3] Segre N., Joekes I. Use of Tire Rubber Particles as Addition to Cement Paste[J]. Cement and Concrete Research, 2000, 30(9): 1 421-1 425.

[4] H Rostami, J Lepore, T Silverstraim, et al. Use of Recycled Rubber Tires in Concrete[C]. Proceedings of the International Conference on Concrete 2000, Scotland, 1993

[5] S W Huang, Y H Xu. Influence of Scrap Tire Rubber Powder on the Mechanical Properties of Cement Mortar[J]. Journal of Nanchang University, 2004 (4): 53–55 (in Chinese)

[6] Rao G. A., Prasad B. K. R. Influence of the Roughness of Aggregate Surface on the Interface Bond Strength[J]. Cement and Concrete Research., 2002, 32(2): 253-257.

[7] Yan A., Wu K.R., Zhang D., . Influence of Concrete Composition on the Characterization of Fracture Surface[J]. Cement and Concrete Composites, 2003, 25: 153-157.

[8] Ohama Y. Polymer-based Admixtures[J]. Cement and Concrete Composites, 1998, 20: 189-212.