摘要
通过对邯郸市某电厂脱硫渣的化学组成及稳定性分析,探讨脱硫渣掺量对制品性能的影响,试图将脱硫渣替代石膏和部分粉煤灰用于加气混凝土的生产。试验结果表明:当脱硫渣掺量为10%时,能有效的抑制加气混凝土的前期发气速度,而且通过适当延长发气时间,可使气孔分布更为均匀,其制品干体积密度和强度均满足加气混凝土砌块要求;当掺量超过15%时,由于脱硫渣自身的活性低,制品变得脆而易爆裂;若脱硫渣单一代替石膏作为缓凝剂,则缓凝效果较差。
According to the analysis of chemical composition and stability of the desulfuration residue from a power plant of Handan, the impact of the desulfuration residue content on the product performance was discussed. The desulfuration residue was used to replace the gypsum and part of fly ash for preparation of aerated concrete. The result indicated that the dry bulk density and intensity of aerated concrete block meet the requirements when the desulfuration residue content is 10%, which could keep down the congeal speed, prolong the congeal procession and keep the stoma; however, if the desulfuration residue content 〉 15%, the product would crack as the result of the its lower activity, and the retarding effort would be bad when the gypsum is replaced by the desulfuration residue only.
出处
《河北工程大学学报（自然科学版）》
CAS
2010年第1期29-32,共4页
Journal of Hebei University of Engineering:Natural Science Edition
关键词
脱硫渣
加气混凝土
石膏
粉煤灰
desulfuration residue
aerated concrete
gypsum
fly ash
