CAJ | 학술논문

通过不同骨料砂浆干缩性能对比试验,研究了废陶瓷再生骨料对砂浆干缩性能的影响规律。采用正交试验,研究了废陶瓷再生粗砂取代率、粉煤灰取代率和水胶比对废陶瓷再生混合砂砂浆干缩性能的影响规律。结果表明,废陶瓷再生骨料有利于降低砂浆的干缩。废陶瓷再生粗砂取代率是影响废陶瓷再生混合砂砂浆干缩的主要因素。粉煤灰取代率在7d以前对砂浆干缩的影响较大,7d以后影响变小,粉煤灰取代率为10%时对废陶瓷再生混合砂砂浆干缩影响最大。
통과불동골료사장간축성능대비시험,연구료폐도자재생골료대사장간축성능적영향규률。채용정교시험,연구료폐도자재생조사취대솔、분매회취대솔화수효비대폐도자재생혼합사사장간축성능적영향규률。결과표명,폐도자재생골료유리우강저사장적간축。폐도자재생조사취대솔시영향폐도자재생혼합사사장간축적주요인소。분매회취대솔재7d이전대사장간축적영향교대,7d이후영향변소,분매회취대솔위10%시대폐도자재생혼합사사장간축영향최대。
Influence of recycled ceramic aggregates on drying shrinkage of mortar was researched by comparison test on drying shrinkage of mortar with different aggregates. Based on orthogonal trial, the factors influencing the drying shrinkage of mortar, such as the recycled ceramic coarse sand replacement ratio, the water-binder ratio and the fly ash replacement ratio, were investigated. The results indicate that the recycled ceramic aggregates can reduce dry shrinkage effectively. The recycled ceramic coarse sand replacement ratio is a major factor influencing drying shrinkage of mortar. The fly ash replacement ratio has greater influences on the drying shrinkage of mortar at early stage (≤7d), and the influence becomes smaller after 7d. And it has the most important influence on the drying shrinkage of mortar when the fly ash replacement ratio is 10%.