醛酮——木质素共聚高效减水剂的性能研究  

Investigation on Properties of A Sulfonated Acetone Formaldehyde-Lignosulfonate Multipolymer Superplasticizer

作　　者：孙振平[1] 冯波[1] 黄雄荣[1] 陈柯柯[1] 蒋正武[1] 张冠伦[1] 陈国忠 陈炜 

机构地区：[1]同济大学先进土木工程材料教育部重点实验室,200092 [2]江苏特密斯混凝土外加剂有限公司,212142

出　　处：《福建建筑》2009年第12期70-72,140,共4页Fujian Architecture & Construction

基　　金：上海市科委重点项目资助;课题编号:072112006-4;上海市青年科技启明星计划(04qmx1428);国家科技支撑计划项目资助(2006BAJ05B01-03)

摘　　要：针对醛酮系减水剂(SAF)合成原材料价格上涨的现状与纸浆黑液资源化利用的紧迫性,设计合成了一种醛酮-木质素共聚物(SAF-LS)。采用红外光谱和粘度试验对醛酮-木质素之间的接枝共聚反应进行了论证。对比了SAF,SAF-LS以及醛酮减水剂与木质素冷复配产品(SAF+LS)在净浆、混凝土中的作用效果,证明SAF-LS是一种性能略逊于SAF,但远优于SAF+LS的减水剂。利用SAF-LS和缓凝组分,设计配制了坍落度保持性和强度发展均十分优良的强度等级为C30-C50的预拌混凝土。Regarding the price rising of the raw materials of sulfonated acetone formaldehyde polymer superplasticizer （SAF） and recycling and reusing of paper pulp liquor, a kind of Sulfonated Acetone Formaldehyde--Lignosulfonate Multipolymer Superplasticizer（SAF--IS） was developed. The multipolymeration between sulfonated acetone formaldehyde and lignosulfate of paper pulp liquor was proved by means of infrared spectroscopy and viscosity test. The effects of SAF, SAF--LS and mixing product of SAF and paper pulp liquor（SAF＋LS） on cement paste and concrete are compared experimentally, which indicates that the properties of SAF--LS are nearly the same to SAF and much better than SAF＋ LS. Ready--mixed concretes of C30 to C50 are designed and produced adding with SAF--LS and a retarder.

关 键 词：醛酮系减水剂 纸浆黑液 木质素磺酸盐 醛酮-木质素共聚减水剂 性能 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]