碱激发碳酸盐复合胶凝材料性能研究  

Study on the performance of alkali-activated carbonatite-based composite binders

作　　者：袁晓宁[1,2] 杨萍[1] 蔡溪南[1] 赵维霞[1] 赵康[1] 杨进超[1] 

机构地区：[1]西北核技术研究所,西安710024 [2]中国原子能科学研究院,北京102413

出　　处：《化工新型材料》2014年第3期157-159,162,共4页New Chemical Materials

摘　　要：以白云石粉为主要原料,矿渣、粉煤灰和偏高岭土为辅助原料,用改性水玻璃激发的方式,制备得到碱激发碳酸盐复合胶凝材料。通过正交试验,研究了水玻璃的模数(A)和固含量(B),水玻璃与固体粉料的比例(C,简称液固比),以及矿渣(D)、粉煤灰(E)和偏高岭土(F)在固体粉料中的质量分数,对碱激发碳酸盐复合胶凝材料的流动度、凝结时间和力学强度的影响。结果表明,B、C和F对流动度影响显著,B和C对凝结时间影响显著,6个因素对力学强度的影响比较复杂。制备得到的碱激发碳酸盐复合胶凝材料流动度较好,凝结时间适宜,早期强度可达到37.9MPa,绝热温升为31.8℃。和混合水泥相比,碱激发碳酸盐复合胶凝材料在某些领域更有优势得到应用。Alkali-activated Carbonatite-based Composite Binders （AACBCB）were prepared through modified water glass activating major dolomite powders and supplementary cementing materials including slag, fly ash and metakaolin. Such influencing factors on the fluidity,gelation time and mechanical strengthen of AACBCB as modulus（A） and solids content （B）of water glass,the mass ratio of water glass and overall solid powders（C）, and the dose of slag（D）, fly ash（E）and metakaolin（F） in overall solid powders were investigated by square-designed experiments. The results indicated that B, C and F had significant influences on the fluidity of AACBCB, B and C had significant influences on the gelation time of AACBCB, and all six factors had complicated influences on mechanical strength of AACBCB. AACBCB was characteristics of good fluidity and feasible gelation time with early-stage compressive strength of 37. 9MPa and adiabatic temperature risen of 31.8 ℃. Compared with blended cement, AACBCB had distinct advantages in future application in some fields.

关 键 词：矿渣 粉煤灰 偏高岭土 白云石 复合胶凝材料 

分 类 号：TU528[建筑科学—建筑技术科学]