再生粗骨料预湿用水量对再生保温混凝土抗压强度的影响研究

发布时间：2019-04-29 12:38

【摘要】：对再生保温混凝土(RATIC)用再生粗骨料(RCA)的吸水规律进行了试验分析,提出适用RATIC的一种用水量计算方法。通过改变再生粗骨料的取代率和预湿用水量,研究不同取代率下不同预湿用水量的再生粗骨料对再生保温混凝土抗压强度的影响。研究结果表明:再生保温混凝土再生粗骨料取代率为30%、50%时,抗压强度随着再生粗骨料预湿用水量的增加而降低;当再生粗骨料取代率为70%、100%时,抗压强度随着再生粗骨料预湿用水量的增加而提高。研究表明这种再生保温混凝土用水量计算方法可用于再生保温混凝土配合比设计。
[Abstract]:The water absorption rule of recycled coarse aggregate (RCA) for recycled thermal insulation concrete (RATIC) was analyzed experimentally and a calculation method of water consumption suitable for RATIC was put forward. The influence of recycled coarse aggregate with different prewetting water consumption on the compressive strength of recycled thermal insulation concrete was studied by changing the replacement rate and prewetting water consumption of recycled coarse aggregate. The results show that when the replacement rate of recycled coarse aggregate is 30% and 50%, the compressive strength decreases with the increase of pre-wet water consumption of recycled coarse aggregate. When the replacement rate of recycled coarse aggregate is 70% and 100%, the compressive strength increases with the increase of pre-wet water consumption of recycled coarse aggregate. The research shows that this method can be used to design the mix ratio of recycled insulation concrete.
【作者单位】：太原理工大学建筑与土木工程学院;
【基金】：国家自然科学基金(51508370,51678384) 山西省自然科学基金项目(2014011033-1)
【分类号】：TU528

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