Influence of Aggregate Moisture Content on the Mechanical Properties of Resin Mineral Composite

摘要

As a result of resin mineral composite (RMC) possesses excellent vibration alleviating properties, it has attracted much attention in the field of elementary machine components. However, applications of RMC are restricted due to its limited mechanical properties. In this paper, the effects of baking time on the aggregate moisture content and the effects of aggregate moisture content on the mechanical strength of RMC were investigated. Experimental results show that the aggregate moisture content decreases with the aggregate baking time increases. And mechanical strength of RMC decreases with the increase of aggregate moisture content, which was attributed to the interface bond, uniaxial compressive strength and curing degree decreases as the aggregate moisture content increases. The best mechanical strength is obtained when the baking time of aggregate at 105°C exceeds 6 h. Compressive strength of RMC decreased from 130.25 MPa to 109.65 MPa and flexural strength of RMC decreased from 35.68 MPa to 32.07 MPa when the aggregate moisture content increased from 0% to 0.0741%.