中国粉体技术2012，Vol.18Issue(5)：72-76,5.DOI:10.3969/j.issn.1008-5548.2012.05.017
脱硫石膏对大掺量粉煤灰-矿渣粉干混砂浆性能的影响
Influence of Desulphurization Sypsum on Property of Large Volume Fly Ash and Slag Powder Dry-mixed Mortars
孙仁东 1何百静 1谢慧东 1张云飞1
作者信息
- 1. 山东华森混凝土有限公司,山东济南 250101
- 折叠
摘要
Abstract
Aiming at the large volume of fly ash and slag powder in dry-mixed mortars making the early and later strength of pastes low. the effect of desulfurization gypsum on the properties of dry-mixed mortars was researched. XRD, SEM and pore structure analysis were used to discuss the mechanism. The results show that adding mass fraction 6% to 8% of desulfurization gypsum into the dry-mixed mortars with large volume of fly ash and slag powder large volume of fly ash and slag powder, no adverse effects on workability of the mortars, the compressive strength and tensile bond strength of pastes increase, the shrinkage reduces more than 10% and the anti-carbonation capacity improves. The desulfurization gypsum plays a dual role to stimulate the sulfate and alkaline of fly ash and slag powder and promote the hydration of cement. The hydration products of cementitious materials improve the internal structure of the mortar pastes and greatly reduce the pores in the pastes.关键词
脱硫石膏/粉煤灰/矿渣粉/干混砂浆Key words
desulfurization gypsum/ fly ash/ slag powder/ dry-mixed mortar分类
化学化工引用本文复制引用
孙仁东,何百静,谢慧东,张云飞..脱硫石膏对大掺量粉煤灰-矿渣粉干混砂浆性能的影响[J].中国粉体技术,2012,18(5):72-76,5.
