粉煤灰-矿粉干混砂浆的制备及性能研究  

Preparation and Propertie's Research of Cement-based Dry-mixed Mortar with Fly Ash and Slag Powder

作　　者：王朝强[1,2] 谭克锋[1,2] 张韶华[1,2] 丁文文[1,2] 李胜男[1,2] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,四川绵阳621010

出　　处：《非金属矿》2014年第4期37-40,共4页Non-Metallic Mines

基　　金：四川省教育厅项目(10zd1104)

摘　　要：研究了粉煤灰、矿粉2种掺合料完全取代水泥对干混砂浆性能的影响。结果表明，增稠保水剂（纤维素醚与胶粉按1：1质量比复配）均掺0．05％，膨润土掺量为3％时，砂浆的稠度和保水性较好；粉煤灰、矿粉复掺可完全取代水泥，当复掺65％-70％粉煤灰和30％~35％矿粉，加入上述增稠保水剂时，砂浆工作性较好，28d龄期强度比纯粉煤灰高约7MPa，满足干混砂浆M7．5强度标准要求。The workability and mechanical property of dry-mixed mortar can be improved and the cost of raw materials has been reduced by adding some admixtures in dry-mixed mortar. The influence made by completely replacing cement by two different mineral admixtures fly ash and slag power on dry-mixed mortar was investigated. The results indicated that when 0.05% hydroxypropyl cellulose ether and redispersible polymer powder was mixed with the mass proportion of 1 ： 1, and 3% bentonite; the consistency and water-binding capacity of dry-mixed mortar was better.It is feasible that mixed fly ash and slag power replace cement completely, the standard requirements of M7.5 grade strength can be reached by adding 65%-70% fly ash, 30%-35% slag powder, and mortar has good workability with the above thickener, the 28 d strength is about 7 MPa higher than that of pure fly ash.

关 键 词：粉煤灰 矿粉 干混砂浆 性能 

分 类 号：TU578.13[建筑科学—建筑技术科学]