污泥烧结页岩砖抗冻性能研究

为了研究不同污泥掺量对污泥烧结页岩砖抗冻性能的影响;并且找出一种新的准确评定砌体抗冻性能的指标,对不同污泥掺量的污泥烧结页岩砖进行15次、25次、35次与50次冻融循环试验,以研究其外观质量损失、强度损失和质量损失;并使用热线法测得其冻融循环后的导热系数。通过描绘出四种不同污泥掺量下对应的质量损失率与强度损失率变化曲线,得出污泥掺量对污泥烧结页岩砖冻融破坏规律。研究结果表明,随着污泥掺量的提高,污泥烧结页岩砖的抗冻性能降低。建议根据不同地区建筑用砖的抗冻性能指标使用不同污泥掺量的污泥烧结页岩砖,同时建议把饱水状态下材料的导热系数作为砌体抗冻性能的指标之一。

Sludge sintered shale brick antifreeze performance study

in order to study different sludge content affect the performance of sludge sintered shale brick antifreeze, and find out a new accurate evaluation of masonry antifreeze performance indicators.Sludge sintered shale brick of different sludge content 15, 25, 35 and 50 times of freeze-thaw cycle test, to study its appearance quality loss, strength loss and mass loss, and using the hotline method measured the freeze-thaw cycle after the coefficient of thermal conductivity.Through the paint under four different sludge content corresponds to the mass loss and strength loss rate curves, it is concluded that the sludge content of sludge in sintering confined shale brick freeze-thaw damage rule.The research results show that with the increase of sludge content, sludge in sintering confined shale brick antifreeze performance degradation.Suggestions according to the different parts of the building brick antifreeze performance using different sludge content of sludge in sintering confined shale brick, also suggested that the coefficient of thermal conductivity of materials under the full water as one of masonry antifreeze performance indicators.