Abstract
Overexploitation of natural resources like sand and stone aggregates for construction purposes, and on the other hand, the generation of huge quantities of different industrial wastes in recent years pose a threat to the environment. One of the promising solutions to both of these problems could be bulk utilization of industrial waste aggregates in civil and construction industries. In order to check the utilization prospects of any industrial waste aggregate, its crushing characteristics is one of the important parameters that needs to be evaluated. This is due to the fact that the engineering behaviour and integrity of any granular media is highly dependent on the breakage potential or the crushing characteristics of the materials. In the present study, some of the industrial waste aggregates viz., Blast furnace slag (BFS), Quarry waste (Q-Waste), Marble waste (M−Waste), and Overburden sand (OB-Sand) are selected for evaluation of their crushing characteristics. Various parameters such as mineralogy, grain morphology, gradation, mean grain size, the initial state of compaction, and stress levels which play an important role in deciding the crushing strength of a granular material are considered in the present study. A series of one-dimensional compression tests are performed at different stress levels (i.e., 5, 10, 20, 30, 40 MPa) after compacting the industrial waste aggregates to different compaction states. Based upon the experimental results, BFS and OB-sand were found to be the most and least crushable materials, respectively. Mathematical equations are also proposed in this paper for the prediction of relative breakage. These are found to be very suitable for industrial waste aggregates. It is highly believed that the results obtained from the present study can be used as a pre-reference while selecting any of the mentioned materials for construction purposes.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call