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Study on the Mix Design of High-performance Liquid Cement Grouting Materials and Performance for Semi-flexible Pavement

Author: ChenXiangFeng
Tutor: PeiJianZhong
School: Chang'an University
Course: Road and Railway Engineering
Keywords: Semi - flexible pavement High - performance cement paste Maternal asphalt mixture Target porosity The groutability parameters Mix Proportion Design Road performance
CLC: U414
Type: Master's thesis
Year: 2010
Downloads: 164
Quote: 2
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Abstract


At present, many countries in order to meet the development needs of road transport , to overcome the lack of asphalt pavement and cement pavement , put forward the concept of semi - flexible pavement , hybrid composite pavement material formed by the cement paste and porous asphalt . Semi-flexible cement concrete pavement both rigid and flexible asphalt concrete can be applied to urban roads, intersections , parking , toll stations and ports . On the basis of the consolidated domestic and foreign research results , we use volume method designed maternal asphalt mixture ; nearly orthogonal test method , the orthogonal test method is designed to meet current performance , the strength requirements of ordinary cement paste and mortar mix . On this basis , the design of high-performance liquid cement paste mixture ratio, and a comparative analysis of the flow properties , shrinkage and strength properties of ordinary cement paste ; through the different mix than the slurry poured into the gap the rate of the parent asphalt mixture test , high-performance liquid cement grout material groutability ; composite filling material way through a series of indoor performance test system performance . By comparing current performance, strength and shrinkage properties of cement paste and mortar , net pulp was found more suitable as a semi - flexible pavement grout slurry . Compared to ordinary paste , high - performance cement paste flow , shrinkage and strength has greatly improved and more stable performance and liquidity . High-performance cement paste with the H2, H3 with the ratio G has better than ordinary paste groutability . On this basis , the maximum density calculation method proposed the slurry grouting groutability parameters and more reasonable theory of composite materials . Laboratory tests show that poured slurry H2 , H3 of composites are superior road performance composite material poured into the ordinary paste . Compared to hot mix asphalt , the obvious advantages of filling composites at high temperature stability , low temperature performance decreased slightly, the water stable performance in line with ordinary asphalt mixture standard requirements . The results of this study to improve the level of semi - flexible pavement design reference value.

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