Abstract:This article addresses the issue of the influence law of mud content on the performance of artificial blocks and conducts studies of the influence of different mud contents (98%,62%,52%,28%,18%,13.3%,5.3%,and 1.3%) on the mechanical properties of artificial blocks prepared by replacing ordinary sand and gravel with dredged soil based on semi-dry compression molding and it also investigates the effects of parameters such as compression strength,molding moisture,and curing conditions on the mechanical properties of dredged soil blocks.The results show that within the range of 13.3%-98.0% clay content,the strength of the specimens increase first and then decrease with the increase of clay content,and the maximum strength is reached when the clay content is 52% and its 28-day compressive strength and splitting tensile strength are 65.5 and 7.13 MPa respectively.Increasing the compressive strength within a certain range has a significant effect on improving the strength of the specimen and the maximum strength of the specimen is achieved when the moisture content is 13%.Temperature and humidity have a significant impact on the strength of specimens,and standard curing has higher strength compared to regular watering and natural curing.The softening coefficients of the standard curing and regular watering curing of the compacted specimens of dredged soil with a mud content of 52% reach 0.94 and 0.92,respectively,so that it has good characteristics of resisting water erosion.The research results can provide reference and guidance for the preparation of artificial blocks from different types of dredged soils such as silt,silty soil and silty sand.
