摘要
以唐山某碱厂的碱渣和邯郸某公司的矿渣微粉为原料、NaOH为碱激发剂、标准砂为细集料、添加一定量的外加剂,进行了碱激发胶凝材料的砂浆力学性能实验。采用正交试验设计与极差分析,研究了矿渣与碱渣质量比、胶砂比、水胶比、NaOH和胶凝材料质量比对砂浆的流动性、抗压强度的影响。结果表明:碱激发胶凝材料的砂浆流动度随着矿渣与碱渣质量比的增大而增大;提高水胶比对砂浆的流动性有利但对于强度的形成不利;砂浆的抗压强度随着矿渣与碱渣质量比的增大而增强,且随着龄期的增加,强度呈增长的趋势;方案2、3、6碱激发胶凝材料的砂浆试样抗压强度达到了"325水泥"抗压强度的标准;少量NaOH有利于碱渣、矿渣胶凝材料强度的形成,而高浓度NaOH抑制强度形成。
The soda residue of a soda plant in Tangshan and the blast furnace slag of a company in Handan were used as raw materials,NaOH as the alkali activator and standard sand as the fine aggregate,and a certain amount of admixture was added to conduct the performance test of alkali-activated cementitious materials mortar.Orthogonal text design and range analysis were used to study the effect of blast furnace slag residue to soda residue ratio,mortar ratio,water binder ratio,NaOH to cementitious material mass ratio on the fluidity and compressive strength of mortar.The results showed that the mortar fluidity increased with the increase of mass ratio of blast furnace slag and soda residue,increasing the ratio of water to cementitious material was favorable to the fluidity,but not conducive to the formation of mortar.The compressive strength of mortar increased with increasing the mass ratio of blast furnace slag and alkali residue,and the compressive strength was tends to increase with the increase of age,and the mortar compressive strength reached the compressive strength of'325 cement'.A small amount of NaOH was conducive to the mortar strength which soda residue mixed blast furnace slag,but high concentration of NaOH inhibited the formation of strength.
作者
徐东强
郭丽艳
林永会
杨芸芸
李培基
Xu Dongqiang;Guo Liyan;Lin Yonghui;Yang Yunyun;Li Peiji(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401;Department of Economic Management,Hebei Normal University For Nationalities,Chengde 067000)
出处
《化工新型材料》
CAS
CSCD
北大核心
2018年第S1期64-68,共5页
New Chemical Materials
基金
河北省科技计划项目(16273809)
关键词
碱渣
矿渣
碱激发胶凝材料
抗压强度
流动度
soda residue
blast furnace slag
alkali-activated cementitious material
compressive strength
fluidity
