silikonil.blogg.se - Cone and crumb

When the incorporated rubber contents remained constant, the CRM increased its dynamic compressive strength and dynamic increase factor with the increase of strain rates. The CRM also showed an obvious strain rate effect. The CRM, when the incorporating crumb rubber increased in the mortar, presented a decrease in its static compressive strength and modulus of elasticity, but an increase in its critical strain and compressive toughness. The result shows that the fluidity of CRM decreases obviously with the addition of crumb rubber and the increase of fine particle rubber size.

In this paper, the CRM specimens containing four different contents of crumb rubber (5, 10, 15, 20%) and four different rubber particle sizes (0.595, 0.297, 0.250, 0.177 mm) were prepared to study the workability of fresh CRM and the stress-strain curve of hardened CRM under static compression and dynamic compression. To develop it, a systematic study of the stress-strain behavior of CRM under static and dynamic compression is therefore very important.

5School of Civil Engineering, Guangzhou University, Guangzhou, ChinaĬrumb rubber mortar (CRM) made from scrap tires can be used in highway, high-speed railways, and airport pavements as a structural material, which may help to solve the problems of raw material shortage and waste tire pollution at the same time.

4School of Civil Engineering, South China University of Technology, Guangzhou, China.

3School of Civil Engineering, Nanjing Forestry University, Nanjing, China.

2Research Institute of Highway Ministry of Transport, Beijing, China.

1Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai, China.

Manjuan Yang 1,2, Zhongyin Guo 1, Wenhua Zhang 3 *, Guangming Chen 4 and Liwen Zhang 5