混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
China Concrete and Cement Products
2015年
10期
6-10
,共5页
苏燕%古松%常晓蕾%李金星
囌燕%古鬆%常曉蕾%李金星
소연%고송%상효뢰%리금성
加热%再生粗骨料%改性%正交试验
加熱%再生粗骨料%改性%正交試驗
가열%재생조골료%개성%정교시험
Heating method%Recycled coarse aggregate%Improving performance%Orthogonal test
采用加热法对简单破碎再生混凝土粗骨料进行正交试验改性研究。加热工艺的控制参数为加热温度、恒温时间，对加热后再生粗骨料表面附着砂浆的剥离方式采用混凝土振动台，控制参数为混凝土振动台振动时间。试验测试了改性前后再生骨料的吸水率、表观密度、压碎指标，采用极差分析法对正交试验结果进行分析。结果表明，加热温度可明显改善再生粗骨料性能，而增加恒温时间及振动台振动时间对提高再生粗骨料性能效果不显著。
採用加熱法對簡單破碎再生混凝土粗骨料進行正交試驗改性研究。加熱工藝的控製參數為加熱溫度、恆溫時間，對加熱後再生粗骨料錶麵附著砂漿的剝離方式採用混凝土振動檯，控製參數為混凝土振動檯振動時間。試驗測試瞭改性前後再生骨料的吸水率、錶觀密度、壓碎指標，採用極差分析法對正交試驗結果進行分析。結果錶明，加熱溫度可明顯改善再生粗骨料性能，而增加恆溫時間及振動檯振動時間對提高再生粗骨料性能效果不顯著。
채용가열법대간단파쇄재생혼응토조골료진행정교시험개성연구。가열공예적공제삼수위가열온도、항온시간，대가열후재생조골료표면부착사장적박리방식채용혼응토진동태，공제삼수위혼응토진동태진동시간。시험측시료개성전후재생골료적흡수솔、표관밀도、압쇄지표，채용겁차분석법대정교시험결과진행분석。결과표명，가열온도가명현개선재생조골료성능，이증가항온시간급진동태진동시간대제고재생조골료성능효과불현저。
Heating method was adopted to improve the performance of simple crushed recycled coarse aggregate and the experiment method was the orthogonal test. Control parameters in heating process were the heating temperature and constant temperature time, and in the process of wiping out the surface mortar on heated recycled aggregate, the concrete vibrating table was used, the controlling parameter for this process was the vibration time. The rate of water absorption, apparent density, crush index of recycled coarse aggregate before and after the improving process were tested, and the range analysis results of orthogonal test show that controlling heating temperature can significantly improve the perfor-mance of recycled coarse aggregate, and the effect by increasing the time of constant temperature and vibration time to im-prove the recycled coarse aggregate performance is not significant.
