| The reinforcement of Geotechnical Engineering has been one of the most important subjects in engineering. The application of new materials and its reinforce techniques have brought new theories and ways and developed Geotechnical Engineering. In recent years, the invention and application of new materials have developed rapidly, and the researches of new materials have entered a new era.But the broad application of new materials needs a lot of tests theories of practices. This thesis has done many researches indoor or in the open with the materials-solidified materials SH and LZU, cultural relic reinforced materials PS, road and bridge reinforced materials cemented material of carbon fiber, based on multi-disciplinary view from sand-control engineering, cultural relic conservation and road and bridge engineering by general ideas and ways of researches. Through lots of experiments with the sand, earth and concrete reinforced by new materials, we drew the conclusion of capabilities and put forward further advice for the application of the new materials.Firstly, we have done many researches in the capabilities of antifreeze, preventing wind erosion, resisting aging, intensity and viscosity etc. In order to prove the results of tests indoor and put the theory into practice, we have done many tests in Shapotou Ningxia, opened many test fields, combined the biology with engineering, and have got good results.Second, we have done researches on the earth from old Great Wall and old cities reinforced by PS, tested the capabilities of intensity, antifreeze, preventing wind erosion, resisting aging etc, offered basis of theory for the application of PS in cultural relic conservation.At last, we have done researches on the sand and concrete reinforced by cemented material of carbon fiber, tested its capabilities of intensity and persistence etc. According to its practice in road and bridge engineering, we have tested its capabilities of reinforced concrete.
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