关键词: 有机纤维, 抗裂性, 收缩

Abstract: With the demand of the engineering project and the development of the technology, concretes have been developed to get the high strength, high durability, and high mobility with physical volume stability. However because of the initial weakness of concrete, especially when strength is high, cracks will easily be developed because of its brittleness, which is the main reason resulting in many project prohlems.Putting the organism fiber into concrete can lower concrete' s brittleness, control the shrinkage defornation of concrete, increase concrete' s perfonnance of preventing crack, and improve the whole perfonnances of the high performance concrete.

Key words: organic fiber, crack resistance, shrinkage