Study on the effect of multi-source solid waste on the performance of its backfill slurry.

With the increase of gangue content, the early strength of the specimen showed a trend of increasing first and then decreasing ( Fig. 7 (a)), that is, when the G/SW was 9–23%, the early strength of the specimen increased slowly, while When G/SW is 23–33%, the early strength of the specimen decreases slowly; It shows that the gangue shows obvious aggregate supporting effect when its content is small.

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