Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Steel slag and mineral slag composite admixture as well as preparation method and application thereof
The invention discloses a steel slag and mineral slag composite admixture as well as a preparation method and application thereof. The steel slag and slag composite admixture is formed by blending fine-grained slag micro powder and coarse-grained slag micro powder, the granularity range D50 of the steel slag micro powder is larger than or equal to 32 micrometers and smaller than or equal to 80 micrometers, the granularity range D50 of the slag micro powder is smaller than or equal to 8 micrometers, and the steel slag and slag composite admixture comprises, by mass, 30%-50% of the steel slag micro powder and 50%-70% of the slag micro powder. The admixture provided by the invention can replace 10-50% of cement in equal mass. The steel slag and slag composite admixture has low requirements on fineness of steel slag powder, and can effectively reduce energy consumption of steel slag powder grinding, thereby being beneficial to realization of low-carbon economy; the stability problem caused by the steel slag is effectively improved, and the stability of the admixture tested by a boiling method and an autoclaving method is qualified; and when the steel slag and mineral slag composite admixture is applied to concrete, the working performance of the concrete can be effectively improved, and meanwhile, the steel slag and mineral slag composite admixture has excellent mechanical properties and durability.
本发明公开了一种钢渣矿渣复合掺合料及其制备方法与应用。钢渣矿渣复合掺合料包括细粒度的矿渣微粉与粗粒度的钢渣微粉相互掺合，其中钢渣微粉粒度范围为32μm≤D50≤80μm，矿渣微粉粒度范围为D50≤8μm，各组分质量百分比为：钢渣微粉30％～50％，矿渣微粉50％～70％。本发明的掺合料可等质量替代10％～50％水泥。本发明的钢渣矿渣复合掺合料对钢渣粉细度要求较低，可以有效降低钢渣粉磨的能耗，从而有利于实现低碳经济；有效改善钢渣导致的安定性问题，煮沸法与压蒸法测试该掺合料的安定性均合格；本发明的钢渣矿渣复合掺合料应用在混凝土中能有效提高混凝土的工作性能，同时具有优良的力学性能和耐久性能。
Steel slag and mineral slag composite admixture as well as preparation method and application thereof
The invention discloses a steel slag and mineral slag composite admixture as well as a preparation method and application thereof. The steel slag and slag composite admixture is formed by blending fine-grained slag micro powder and coarse-grained slag micro powder, the granularity range D50 of the steel slag micro powder is larger than or equal to 32 micrometers and smaller than or equal to 80 micrometers, the granularity range D50 of the slag micro powder is smaller than or equal to 8 micrometers, and the steel slag and slag composite admixture comprises, by mass, 30%-50% of the steel slag micro powder and 50%-70% of the slag micro powder. The admixture provided by the invention can replace 10-50% of cement in equal mass. The steel slag and slag composite admixture has low requirements on fineness of steel slag powder, and can effectively reduce energy consumption of steel slag powder grinding, thereby being beneficial to realization of low-carbon economy; the stability problem caused by the steel slag is effectively improved, and the stability of the admixture tested by a boiling method and an autoclaving method is qualified; and when the steel slag and mineral slag composite admixture is applied to concrete, the working performance of the concrete can be effectively improved, and meanwhile, the steel slag and mineral slag composite admixture has excellent mechanical properties and durability.
本发明公开了一种钢渣矿渣复合掺合料及其制备方法与应用。钢渣矿渣复合掺合料包括细粒度的矿渣微粉与粗粒度的钢渣微粉相互掺合，其中钢渣微粉粒度范围为32μm≤D50≤80μm，矿渣微粉粒度范围为D50≤8μm，各组分质量百分比为：钢渣微粉30％～50％，矿渣微粉50％～70％。本发明的掺合料可等质量替代10％～50％水泥。本发明的钢渣矿渣复合掺合料对钢渣粉细度要求较低，可以有效降低钢渣粉磨的能耗，从而有利于实现低碳经济；有效改善钢渣导致的安定性问题，煮沸法与压蒸法测试该掺合料的安定性均合格；本发明的钢渣矿渣复合掺合料应用在混凝土中能有效提高混凝土的工作性能，同时具有优良的力学性能和耐久性能。
Steel slag and mineral slag composite admixture as well as preparation method and application thereof
一种钢渣矿渣复合掺合料及其制备方法与应用
YU QIJUN (Autor:in) / WU ZIQI (Autor:in) / WEI JIANGXIONG (Autor:in) / ZHANG TONGSHENG (Autor:in) / HUANG HAOLIANG (Autor:in) / LI FANGXIAN (Autor:in)
06.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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