DURABLE PAVEMENT WITH ECC
While jointed plain concrete pavement (JPCP) has been extensively used in highwayconstruction due to the wide availability of concrete materials, brittle fracture failure due torepeated loadings remains the major limitation to its durability and service life. The use ofductile concrete named Engineered Cementitious Composite (ECC) as an alternate pavementmaterial should arrest such failure mode and greatly enhance its long term durabilityperformance. In this paper, we introduce and demonstrate this concept via experimental studyof the fatigue performance of ECC beam and FEM analysis of pavement structures. The ECCspecimens totally eliminate the single fracture mode in concrete by developing extensivemicro-cracks under flexural fatigue loading, in addition to a much enhanced modulus ofrupture compared to controlled concrete specimen. Based on FEM analysis of the ECCpavement and fatigue performance of the ECC beam, a simplified design chart for ECCpavement is presented to facilitate the implementation of the proposed technology.
Jointed plain concrete pavement (JPCP) Brittle fracture failure Engineered Cementitious Composites (ECC) Micro-cracks Durability service life
Shunzhi Qian V.C.Li
The Advanced Civil Engineering Materials Research Laboratory,Department of Civil and Environmental Engineering,University of Michigan,Ann Arbor,Michigan,48109,USA;Microlab,Faculty of Civil Engineering and Geosciences,Delft University of Technology,2600 GA
国际会议
南京
英文
535-543
2008-10-13（万方平台首次上网日期，不代表论文的发表时间）