非金属矿
非金屬礦
비금속광
NON-METALLIC MINES
2015年
1期
38-41
,共4页
低水泥%大掺量钢渣%碱激发%混凝土%强度
低水泥%大摻量鋼渣%堿激髮%混凝土%彊度
저수니%대참량강사%감격발%혼응토%강도
low cement%large dosage of steel slag%alkali-activated%concrete%strength
通过改变钢渣粉、矿渣粉等矿物掺合料的比例，研究碱激发大掺量钢渣混凝土的力学性能，并采用X射线衍射和扫描电镜等测试手段对其微结构进行分析。结果表明，激发剂与减水剂、胶凝体系、粗细骨料之间在合理加料、搅拌顺序下，和易性满足要求同时可以制备出钢渣掺量达60%、矿渣掺量为15%、硅灰掺量为5%、水泥掺量仅为20%、强度等级可达C30的混凝土；微观分析表明，优化后的混凝土胶凝体系28 d水化产物结构致密，且孔隙较少，后期强度发展较好。
通過改變鋼渣粉、礦渣粉等礦物摻閤料的比例，研究堿激髮大摻量鋼渣混凝土的力學性能，併採用X射線衍射和掃描電鏡等測試手段對其微結構進行分析。結果錶明，激髮劑與減水劑、膠凝體繫、粗細骨料之間在閤理加料、攪拌順序下，和易性滿足要求同時可以製備齣鋼渣摻量達60%、礦渣摻量為15%、硅灰摻量為5%、水泥摻量僅為20%、彊度等級可達C30的混凝土；微觀分析錶明，優化後的混凝土膠凝體繫28 d水化產物結構緻密，且孔隙較少，後期彊度髮展較好。
통과개변강사분、광사분등광물참합료적비례，연구감격발대참량강사혼응토적역학성능，병채용X사선연사화소묘전경등측시수단대기미결구진행분석。결과표명，격발제여감수제、효응체계、조세골료지간재합리가료、교반순서하，화역성만족요구동시가이제비출강사참량체60%、광사참량위15%、규회참량위5%、수니참량부위20%、강도등급가체C30적혼응토；미관분석표명，우화후적혼응토효응체계28 d수화산물결구치밀，차공극교소，후기강도발전교호。
Study on preparation alkali-activated large dosage of steel slag concrete's mechanical property by changing steel slag powder and slag powder proportion of mineral admixtures, and analyze its microstructure use XRD and SEM and other means of testing. The experimental results have shown that activator and water reducing agent, cementitious system, ifne aggregate and coarse aggregate at a reasonable feeding, stirring sequence, the workability meet the requirements and preparation of concrete by 60% steel slag, 15% slag content, silica fume amount of 5%, only 20% of cement content, and concrete’s strength grade can up to C30. Microscopic analysis showed that the 28 d hydration products of optimized concrete cementitious system has compact structure and less porosity, and better strength development in later.
