考虑破损泡沫前补偿设计的泡沫混凝土制备方法  

Foam Concrete Design and Preparation Method Considering the Pre-compensation of Damaged Foam

作　　者：郝逸飞 郭瑞云 梁恺康 HAO Yifei;GUO Ruiyun;LIANG Kaikang(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;Department of Architecture and Civil Engineering,City University of Hong Kong,Hong Kong 999077,China)

机构地区：[1]河北工业大学土木与交通学院,天津3004011 [2]香港城市大学建筑与土木工程学院,中国香港999077

出　　处：《北京工业大学学报》2024年第4期396-404,共9页Journal of Beijing University of Technology

基　　金：河北省自然科学基金资助项目(E2021202115)。

摘　　要：为了研究不同因素对泡沫混凝土中泡沫破损的影响,优化泡沫混凝土配合比设计方法,进而提高最终产品质量,对搅拌速率、水灰比和设计密度对消泡率的影响进行了研究,提出了一种考虑破损泡沫前补偿,即对破损泡沫量提前补偿以及对多余水量提前去除的泡沫混凝土配合比设计方法。依据前/后补偿法分别制备了400~1000 kg/m^(3)的泡沫混凝土,并对比产品的物理性能和力学性能。结果表明:与后补偿法相比,利用前补偿法制备的泡沫混凝土在满足密度等级一定的情况下,抗压强度最高提高了39.6%。与实际工程中常用的需要数次“补泡-称量”的后补偿法相比,前补偿法工艺简便,降低了长距离作业中堵管风险,提高了泡沫混凝土以及最终的工程质量。To investigate the impact of various factors on foam breakage in foam concrete and enhance the quality of the final products,this study examined the effects of mixing speed,water-cement ratio,and design density on the defoaming rate.Furthermore,a mix ratio design method for foam concrete,known as pre-compensation,was introduced to compensate for the damaged foam content and remove excess water beforehand.Foam concretes ranging from 400 kg/m^(3) to 1000 kg/m^(3) were prepared according to the pre/post compensation method,and their physical and mechanical properties were compared.Results demonstrate that the compressive strength of foam concrete prepared using the pre-compensation method increases by up to 39.6%at the same density level compared to the post-compensation method.Notably,the pre-compensation method offers simplicity over the post-compensation method,which requires multiple“filling and weighing”procedures during practical engineering.This simplicity reduces the risk of pipe plugging during long-distance operations and enhances both the quality of foam concrete and the overall engineering process.

关 键 词：泡沫混凝土 泡沫破损 前补偿法 力学性能 物理发泡 道路工程 

分 类 号：TU[建筑科学]