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Creep Property of Solidifying Backfill Body of High-Water Material

International Journal of Mining Science and Technology 1999年第2期20卷 140-143页

作者：杨宝贵孙恒虎

On the basis of the creep test of bigh-water materisl solidifying backfill body(abb. HW body), This paper discusses its creep properties- The visco-elasto-plastic model, which shows the creep properties of HW body, is developed, and the creep contitutive equations are deduced. The visco-elastoplastic model is proved by the experiments and practice.

关键词： high-water material solidifying backfill body creep property visco-elastic-plastic property

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Rutting Resistance of Asphalt Pavement Mixes by Finite Element Modelling and Optimisation

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Journal of Construction Research 2019年第2期1卷 1-7页

作者： Chau Phuong Ngo Van Bac Nguyen Thanh Phong Nguyen Ngoc Bay Pham Van Phuc Le Van Hung Nguyen Faculty of Civil Engineering University of Transport and CommunicationsCampus in Ho Chi Minh CityVietnam College of Engineering and Technology University of DerbyDerbyUnited Kingdom

Asphalt pavement rtting is a major safety concem and is one of the main distress modes of asphalt *** into asphalt pavement mixes that provide strong resistance for nutting is considered of great significance as it can help provide extended pavement life and significant cost savings in pavement maintenance and *** objectives of this study are to develop numernical models to investigate the ntting of asphalt concrete pavements and to find optimal design of asphalt pave-ment mix for nutting ***-dimensional Finite Element mod-els were first developed to simulate both the axial compression and wheel track testing in which a visco elastic-plastic material model was used to predict the ntting of the asphalt concrete pavements.A strain hardening creep model with the material parameters developed from experimental testing was employed to model the time-dependent characteristics of the asphalt concrete *** results were validated against the pre-vious experimental wheel track test results of different pavement ***,optimisation techniques using the Design Of Experiments method were applied to the simulation rutting results by varying creep parameters to identify their effects on rutting resistance in order to obtain an optimal asphalt pavements *** results of this paper clearly demonstrate an efficient and effective experimental-numerical method and tool set towards optimal design for asphalt concrete pavements for rutting resis-tance.

关键词： visco-elastic-plastic Creep Asphalt pavement Rutting Wheel track testing Finite Element modelling Design of experiments Optimisation

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