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以水泥和白肥作为复合胶凝体系,研究了水泥-白肥-硫酸渣生产建筑砌块的可行性。当白肥和水泥掺量均为20%~60%时,随白肥与水泥质量比从1∶3逐步上升到3∶1,水泥-白肥-硫酸渣基建筑砌块用水量从240m L逐步上升到342m L,干密度从1816kg/m~3逐步下降到1410kg/m~3,7d强度呈现先增长后下降趋势,抗压、抗折强度最高值分别为16.7MPa、3.0MPa,其机理为白肥与水泥水化产物Ca(OH)_2反应生成羟基磷灰石,与C-S-H协同形成稳定的复合胶凝体系,可应用于砌块生产中,变废为宝。
Using cement and white fat as composite gelling system, the feasibility of using cement - white fat - sulfuric acid residue to produce building blocks was studied. When the ratio of white fat to cement is 20% ~ 60%, the mass ratio of white fat to cement gradually increases from 1: 3 to 3: 1, the water consumption of cement-white fat-sulfuric acid slag-based construction block increases from 240m L Gradually increased to 342m L, and the dry density decreased gradually from 1816kg / m ~ 3 to 1410kg / m ~ 3,7d. The strength of the dry density first increased and then decreased, and the highest values of compressive strength and flexural strength were 16.7MPa and 3.0MPa respectively. For white fat and cement hydration products Ca (OH) _2 reaction hydroxyapatite, and CSH synergistic formation of a stable composite gel system can be used in block production, turning waste into treasure.