An Experimental Study on ConsolidationProperties of SHI-MEN Mud-Sand

• Main Authors: Hsiang-Tzu Wei, 魏子翔
• Other Authors: Tao -Wei Feng
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/842g76

碩士 === 中原大學 === 土木工程研究所 === 93 === Abstract In recent years, the growing of economics in Taiwan causes saturated states of the land so that in the coast,the construction of reclamation has been done.On the other hand,Soil and water conservation wasn’t good in the upper watershed of reservoirs in Taiwan,and surface soils were scour -ed for a long time resulting in silting problem in the reservoirs.In order to solving the possibility of reclamation by using SHI-MEN Reservoir mud. In this study,the consolidation properties of composite soils and the reclamation ways of mud content are investigated by using SHI-MEN Reservoir mud, Mai-Liao sands,and Ottawa sands samples. Firstly, the basic physi - properties test ,and SEM test were conducted on the samples Secondly, the different proportion of SHI - MEN mud - sand were made in distilled water and seawater in one - dimensional consolidation test. The results of this study show (1) When mud content 30%,all the consolidation curves exhibit the typical S-shape ; (2) the void ratio of composite soils increases with the increasing mud comtent ; (3) the compression index(cc),secondary compression index(cα) of composite soils increases with the increasing consolidation pressure, cc/cα increases with the increasing mud content,the compressibility of SHI-MEN mud-Mai-Liao sand samples are higher than SHI-MEN mud-Ottawa sand samples; (4) the cosolidation coefficient(cv) of composite soils increases with the icreasing consolidation pressure,decreases with the increasing mud content,in seawater is faster than in distilled water; (5) the permeability coefficient(kv) of composite soils decreases with the decreasing void ratio(e50) and the increasing mud content ; (6) when mud content 20%,the consolidation properties of composite soils is similar to sand,when mud content 40%,it is similar to clay; (7)when the foundation is continuous footing(R.C.),Mai-Liao sands can be added 17% SHI-MEN mud at most, Ottawa sands can be added 22% SHI-MEN mud at most. ; when the foundation is mat foundation(R.C.),Mai-Liao sands can be added 26% SHI-MEN mud at most, Ottawa sands can be added 31% SHI-MEN mud at most.