The structure, paving techniques and the future of some type of polyurethane plastic playgrounds, such as the coiled plastic course with surface embossing, the plastic course with granular surface which sprayed by mixture of rubber pellet and polyurethane prepolymer, low cost two layer plastic course, and special paving material were introduced.

By the improvement of grinding process of the component A of two component polyurethane paving materials, the production cycle is shortened, and the energy consume is reduced.

A low cost polyurethane paving materials were produced by studying compositions and ratio of polyurethane elastomer admixture.

Based on the property and suitability of pavement materials, pavement materials selected properly is one of most important steps in the design of pavement.

A review of elastic constitutive model for rubber materials;

Finite element analysis of the rubber material's shear and torsion;

Finite element analysis of super-elastic rubber materials based on the Mooney-Rivlin and Yeoh model;

The constructive law of rubber-like material is complicated and few experimental researches have been carried out on it.

This paper investigates the plane strain crack-tip field in a homogeneous and isotropic rubber-like material under tension by means of the fully non-linear elastic theory.