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This paper comparatively study on fluidity, flexural strength, compressive strength and other mechanical properties of sisal fiber cement mortar and the base mortar. The results show that fluidity of sisal fiber makes sisal fiber cement mortar than that of the base group decreased about by 11.1%;When sisal fiber content is 4.5 kg/m3, water reducing agent is 2.78 kg/m3, the best mixing proportion of sisal fiber cement mortar for water: glue: sand = 0.45:1.:2.5, flexural strength improved by 52.4%, 54.3%, 20.1% respectively, compressive strength increased by-1.5%, 6.5% and-2.1%.And analyzed the mechanism of flexural and compressive from the chemistry of sisal fiber and cement.

Asphalt concrete is a typical complex of viscous, elastic and plastic.So the raw materials should be fully considered, such as asphalt, aggregate, filler, etc, when research to viscoelastic. Viscoelastic can influence various properties, even to service life of the road and its performance. Therefore, if can improve the viscoelastic properties, it will have a lot of influence to asphalt concrete. Through to add 0.2% sisal fibre to common concrete to study the viscoelastic properties, this article seek to improve the viscoelastic method, in order to play the role of asphalt concrete better.

Fatigue crack is one of the main road damage forms of asphalt pavement structure, and serious impact the asphalt pavement performance and service life. Asphalt mixture has typical viscoelastic,and can get Burgers model and viscoelastic parameters form creep test. Using finite element method of fracture mechanics, simulation under dynamic loading, research crack extending behavior of common asphalt concrete pavement and mixed with 0.2% of sisal fiber asphalt concrete pavement. From the results, it can find out that when mixed with sisal fiber, the anti-fatigue cracking performance is obvious enhancement.