建筑垃圾再生骨料改良高液限土崩解特性

o address the poor water stability of the high liquid limit soil, the effects of different recycled aggregate content, particle size and brick-concrete ratio on the compaction and disintegration characteristics of the improved soil were studied, and the improvement mechanism was analyzed. The test results show that with the content of recycled aggregate increases, the maximum dry density and optimal water content of the improved soil gradually decrease. With the content of recycled aggregate increases, the disintegration time of the specimen first increases and then decreases, and the disintegration resistance is best when the content is 15%. The recycled aggregate with smaller particle size has better improvement effect on high liquid limit soil, the recycled aggregate with 0.075~2.000 mm has slow disintegration rate and more remaining disintegration at the same time. The improvement effect is best when the brick-to-concrete ratio is 1:2. The disintegration rate is mainly related to the size of the sample cracks. The larger the sample cracks, the worse the disintegration resistance.