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Steel slag powder-ferromanganese slag powder composite admixture and preparation process thereof
The invention discloses a steel slag powder-ferromanganese slag powder composite admixture and a preparation process thereof. The composite admixture comprises, by weight, 5%-30% of ferromanganese slag powder and 70%-95% of steel slag powder, and the preparation method comprises the steps that ferromanganese slag and steel slag are dried, crushed, ground, graded or screened to obtain ferromanganese slag powder and steel slag powder; then the ferromanganese slag powder and the steel slag powder are uniformly mixed according to a ratio to obtain the steel slag powder-ferromanganese slag powder composite admixture, wherein the performance of the steel slag powder meets the secondary technical requirements in the GB/T20491-2017 Standard of Steel Slag Powder for Cement and Concrete. A micro-aggregate effect is generated through mutual excitation of the ferromanganese slag powder and the steel slag powder, the fluidity, compression resistance and flexural activity of the admixture in cementmortar are improved, the concrete slump over time is increased, and the compression resistance and flexural strength of the concrete are improved.
本发明公开了一种钢渣粉‑锰铁矿渣粉复合掺合料及其制备工艺，该复合掺合料按重量比包括锰铁矿渣粉5～30％、钢渣粉70％～95％，其制备方法为分别将锰铁矿渣和钢渣烘干、破碎、粉磨、分级或筛分得到锰铁矿渣粉和钢渣粉；然后将所述锰铁矿渣粉和钢渣粉按照配比混合均匀得到钢渣粉‑锰铁矿渣粉复合掺合料，其中所述钢渣粉性能满足GB/T20491‑2017《用于水泥和混凝土中的钢渣粉》标准中二级技术要求。本发明通过锰铁矿渣粉与钢渣粉相互激发，产生微集料效应，提高掺合料在水泥砂浆中的流动度和抗压、抗折活性，增加混凝土经时坍落度，提高混凝土抗压、抗折强度。
Steel slag powder-ferromanganese slag powder composite admixture and preparation process thereof
The invention discloses a steel slag powder-ferromanganese slag powder composite admixture and a preparation process thereof. The composite admixture comprises, by weight, 5%-30% of ferromanganese slag powder and 70%-95% of steel slag powder, and the preparation method comprises the steps that ferromanganese slag and steel slag are dried, crushed, ground, graded or screened to obtain ferromanganese slag powder and steel slag powder; then the ferromanganese slag powder and the steel slag powder are uniformly mixed according to a ratio to obtain the steel slag powder-ferromanganese slag powder composite admixture, wherein the performance of the steel slag powder meets the secondary technical requirements in the GB/T20491-2017 Standard of Steel Slag Powder for Cement and Concrete. A micro-aggregate effect is generated through mutual excitation of the ferromanganese slag powder and the steel slag powder, the fluidity, compression resistance and flexural activity of the admixture in cementmortar are improved, the concrete slump over time is increased, and the compression resistance and flexural strength of the concrete are improved.
本发明公开了一种钢渣粉‑锰铁矿渣粉复合掺合料及其制备工艺，该复合掺合料按重量比包括锰铁矿渣粉5～30％、钢渣粉70％～95％，其制备方法为分别将锰铁矿渣和钢渣烘干、破碎、粉磨、分级或筛分得到锰铁矿渣粉和钢渣粉；然后将所述锰铁矿渣粉和钢渣粉按照配比混合均匀得到钢渣粉‑锰铁矿渣粉复合掺合料，其中所述钢渣粉性能满足GB/T20491‑2017《用于水泥和混凝土中的钢渣粉》标准中二级技术要求。本发明通过锰铁矿渣粉与钢渣粉相互激发，产生微集料效应，提高掺合料在水泥砂浆中的流动度和抗压、抗折活性，增加混凝土经时坍落度，提高混凝土抗压、抗折强度。
Steel slag powder-ferromanganese slag powder composite admixture and preparation process thereof
一种钢渣粉-锰铁矿渣粉复合掺合料及其制备工艺
WU SHAOPENG (author) / LI HAO (author) / XIE JUN (author) / CHEN MEIZHU (author) / REN YANFEI (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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