EXPERIMENTAL STUDY ON UNCONFINED COMPRESSIVE STRENGTH OF REUSED MUNICIPAL SOLID WASTES COMBUSTION

The slag used in experimental study got from a city of JiangSu Province municipal solid waste incinerator(MSWI)were sieved through standard analysis sieve to get particles smaller then 2mm in diameter. Some of the particles used in experiment were used before. First different moisture content of reused MSWI were got by mixing the particles of slag with water, then samples with sizes 80mm in height and 39.1mm in diameter of different dry density which were 1.4, 1.5 and 1.6 were made through hierarchical compaction. Unconfined strength test of samples with different dry density and different curing age of 3d, 7d, 14d, 28d, 45d and 60d were studied, and 5 experiments were done to a kind of dry density in a certain curing age in order to reduce the impact of discrete. Through a large number of experimental data, the unconfined compressive strength increases with dry density and moisture content despite of the discreteness but much smaller than the samples made by slag not used before. And the XRD analysis of the slag was done to get the main components of the slag in order to obtain a better understanding of the strength characteristics of the slag sample. The results obtained in this paper provide a reference for the better application of slag to concrete projects.