作者机构：
[Xiaoming HE] School of Civil Engineering and Architecture, Wuhan Polytechnic University, P.O. Box430023, Wuhan, Hubei.E-mail:;[Jinyong LV] School of Civil Engineering and Architecture, Wuhan Polytechnic University, P.O. Box 430023, Wuhan, Hubei.E-mail:
会议名称：
ICCTP 2010
会议时间：
2010-08-04
会议地点：
Beijing(CN)
会议论文集名称：
10th international conference of Chinese transportation professionals 2010. vol. 5
摘要：
Fatigue cracking of asphalt mixtures is the main damage phenomena for asphalt pavement, which seriously affects the pavement performance. The main influencing factors of fatigue cracking are material properties and load condition. Sisal fiber is a new road material; fracture mechanics theory and finite element method are used to detect whether sisal fiber will enhance fatigue cracking stability of asphalt mixtures. The moving uniformly distributed load is used to simulate vehicle loadings. Gradation of the mixture is AC-13, adjusted synthesis in each group as follows: basalt 1#: basalt 2#: basalt 3# : basalt 4#: slag = 20%: 32%: 12%: 35%: 1%, dosage of sisal fiber is 0.2%. ABAQUS finite element software and singular element are utilized to build the sisal fiber asphalt mixture model with cracks, as well as the common asphalt mixture. The calculated results showed that stress intensity factors of cracks for sisal fiber are reduced. The main reason is due to sisal fiber improving the modulus of asphalt mixtures. Therefore, sisal fiber can improve performance by increasing resistance to fatigue cracking.
会议名称：
Global Conference on Civil, Structural and Environmental Engineering / 3rd International Symp on Multi-field Coupling Theory of Rock and Soil Media and its Applications
会议时间：
OCT 20-21, 2012
会议地点：
China Three Gorges Univ, Yichang, PEOPLES R CHINA
摘要：
The carbon fiber is applied to the bridge reinforcement as the intelligent material because of the electrocaloric effect, which can improve the bearing capacity and the deformation capacity of the bridge. This paper investigated the application of the carbon fiber concrete in the maintenance of Guan Yin Dang bridge. With the combination of the analytical and experimental methods, we can obtain the calibration coefficient for the structure. The maximum calibration coefficient of the stress at the mid-span is less than 1, and meets the requirement of the criterion. The results demonstrate that applying the carbon fiber concrete in the bridge reinforcement is an effective method, which may provide a basis for the bridge intelligence of reinforcement and health inspection.
