Experimental Study on Creep Mechanical Properties of Silty Loam in Dongyu River Embankment
In order to study the creep mechanical characteristics of silty loam in Jining section of Dongyu River embankment,the creep experiments of silty loam under the influence of moisture content,compactness and geopolymer content were designed and carried out,and the creep mechanical characteristics were analyzed based on the creep experiment results.The results showed that the creep curves under various loads were"inverted L"and not affected by the three factors;the larger the creep load,the larger the creep value and the initial increment time of the load.The larger the moisture content,the smaller the creep characteristic value of the specimen,and the weaker the creep damage resistance.When the compactness of the specimen was increased,the creep characteristic values including the creep rate and the initial increasing time were reduced.Controlling the compactness of the specimen was helpful to enhance the resistance to constant load damage.The creep value and creep rate decreased with increasing the content of modifier,especially when the content was 0.5%～1%,the effect was more significant,while the effect was gradually weakened when the content was 1.25%～1.5%;the experiment showed that it was more reasonable to control the content of modifier at about 1%.This paper can provide reference for the study of creep mechanics and experiment design of silty loam.
国家科技期刊平台
NSTL
万方数据
维普
