CAJ | 학술논문

将废混凝土、废砖再生粗砂和特细砂混合后得到建筑垃圾再生混合砂，研究了水胶比、建筑垃圾再生粗砂取代率和粉煤灰取代率对砂浆性能的影响，通过正交层次分析、方差分析和综合评分法，得出再生砂浆的最佳配合比。结果表明，水胶比和粉煤灰取代率是影响再生砂浆性能的主要因素，粉煤灰取代率增大对再生砂浆强度具有较大的劣化作用，建筑垃圾再生粗砂取代率对砂浆稠度的影响较大，对抗压强度和抗折强度的影响最小。
장폐혼응토、폐전재생조사화특세사혼합후득도건축랄급재생혼합사，연구료수효비、건축랄급재생조사취대솔화분매회취대솔대사장성능적영향，통과정교층차분석、방차분석화종합평분법，득출재생사장적최가배합비。결과표명，수효비화분매회취대솔시영향재생사장성능적주요인소，분매회취대솔증대대재생사장강도구유교대적열화작용，건축랄급재생조사취대솔대사장주도적영향교대，대항압강도화항절강도적영향최소。
Recycled construction waste mixed sand was obtained by mixing recycled concrete coarse sand, recycled brick coarse sand and ultra fine sand. The effect of the recycled aggregate replacement ratio, the water-binder ratio and the fly ash replacement ratio on the performances of recycled mortar is researched. By analytic hierarchy process, variance analysis and the method of synthetically judgment,the optimal proportion was obtained. The results show that the water-binder ratio and the fly ash replacement ratio are the key factors for the performances of recycled mortar. The increasing of fly ash replacement ratio has negative effect on recycled mortar strength. The recycled aggregate replacement ratio has a significant impact on consistency and minimal impact on compressive strength and bending strength.