污泥陶粒的烧制与孔结构研究  

Preparation and void structure of sludge ceramsite

作　　者：王乐乐[1,2] 杨鼎宜[2] 艾亿谋[1,3] 李浩[2] 王展飞[2] 朱静[2] 朱金春[2] 

机构地区：[1]苏州市建设工程质量检测中心有限公司,江苏苏州215129 [2]扬州大学建筑科学与工程学院,江苏扬州225127 [3]河海大学土木与交通学院,江苏南京210098

出　　处：《混凝土》2016年第1期103-107,111,共6页Concrete

基　　金：“十二五”国家科技支撑计划(2012BAJ20B01);江苏省高校优秀中青年教师和校长境外研修计划资助;扬州市“绿扬金凤计划”扬州大学人才专项

摘　　要：阐述了以城市污泥,黄土和膨润土烧制轻质污泥陶粒,分析了孔隙结构对污泥陶粒的物理性能的影响。研究结果表明:(1)适合烧制轻质陶粒的原料配合比(干重):污泥30%,膨润土20%,预热温度350℃,烧制温度1 160℃;以此方案制得的陶粒松散密度为257 kgm3,筒压强度为0.74 MPa,吸水率为21%,软化系数为0.93;(2)污泥陶粒空隙占总体积多少主要与陶粒化学组成,原料的物理性能和烧制工艺有关,空隙的均匀程度影响陶粒的筒压强度和松散密度。Stated that lightweight sludge ceramsite was fired by municipal sludge,loess and bentonite, and analyzes the impact of pore geometry having on sludge ceramsite physical property. The results of the study show two aspects.Firstly, the proper ratio of raw materials （net weight）for baking lightweight sludge ceramsite are 30 percent sewage sludge,20 percent loess,350 centigrade preheat temperature, 1 160℃ centigrade baking temperature, and baked in this condition the loose bulk density of lightweight sludge ceramsite is 257 kg/m^3 ,cylinder pressure strength is 0.74 MPa,water adsorption is 21% and coefficient of softness is 0. 93. Secondiy , the number of sludge ceramsite void occupies bulk volume relates to the chenmical composition of ceramsite ,physical property of raw material and baking method, and uniformity coefficient of void influents the cylinder pressure strength and condition Loose bulk density of ceramsite.

关 键 词：陶粒 正交设计 孔隙结构 物理性能 

分 类 号：TU528.041[建筑科学—建筑技术科学]