Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
All-solid-waste pavement concrete utilizing steel slag in large proportion and preparation method thereof
The invention provides all-solid-waste pavement concrete utilizing steel slag in a large proportion and a preparation method thereof. The preparation method comprises the following steps of: firstly,uniformly mixing 75%-90% by mass of slag powder and 10%-25% by mass of ground industrial byproduct gypsum to prepare a cementing material; mixing 10%-25% by mass of the cementing material, 13%-42.5% by mass of converter steel slag coarse aggregate with the particle size of 5-25mm and 32.5%-68% by mass of converter steel slag fine aggregate with the particle size of less than 5mm; and then adding 3%-12.5% by mass of water and 0.1%-0.75% by mass of a water reducing agent, and uniformly stirring to obtain the all-solid-waste pavement concrete. The method is based on the double salt effect of various solid wastes, the all-solid-waste concrete is prepared by combining dual synergistic optimization of grain size fraction and activity, the problems of low activity and poor stability when the converter steel slag is applied to concrete are solved, the steel slag mixing amount in all-solid-waste concrete is remarkably increased, the prepared pavement concrete has good compressive strength, theproduction cost of the concrete is reduced, the resource utilization efficiency is improved, the stacking condition of the steel slag is relieved, and obvious economic and environmental benefits are achieved.
本发明提供了一种大比例利用钢渣的全固废路面混凝土及其制备方法。按质量百分比，先将75%～90%的矿渣粉和10%～25%的粉磨工业副产石膏混匀制成胶凝材料，再按胶凝材料10%～25%、5mm～25mm粒径的转炉钢渣粗骨料13%～42.5%、小于5mm粒径转炉钢渣细骨料32.5%～68%混合，然后加入水3%～12.5%、减水剂0.1%～0.75%搅拌均匀后制得全固废路面混凝土。本发明基于多种固废的复盐效应，结合粒级与活性的双重协同优化制备全固废混凝土，解决了转炉钢渣应用于混凝土时活性低、安定性差的问题，显著提高了全固废混凝土中的钢渣掺量，所制路面混凝土具有良好的抗压强度，降低了混凝土的生产成本，提高了资源利用效率，减轻钢渣的堆存状况，具有明显的经济及环境效益。
All-solid-waste pavement concrete utilizing steel slag in large proportion and preparation method thereof
The invention provides all-solid-waste pavement concrete utilizing steel slag in a large proportion and a preparation method thereof. The preparation method comprises the following steps of: firstly,uniformly mixing 75%-90% by mass of slag powder and 10%-25% by mass of ground industrial byproduct gypsum to prepare a cementing material; mixing 10%-25% by mass of the cementing material, 13%-42.5% by mass of converter steel slag coarse aggregate with the particle size of 5-25mm and 32.5%-68% by mass of converter steel slag fine aggregate with the particle size of less than 5mm; and then adding 3%-12.5% by mass of water and 0.1%-0.75% by mass of a water reducing agent, and uniformly stirring to obtain the all-solid-waste pavement concrete. The method is based on the double salt effect of various solid wastes, the all-solid-waste concrete is prepared by combining dual synergistic optimization of grain size fraction and activity, the problems of low activity and poor stability when the converter steel slag is applied to concrete are solved, the steel slag mixing amount in all-solid-waste concrete is remarkably increased, the prepared pavement concrete has good compressive strength, theproduction cost of the concrete is reduced, the resource utilization efficiency is improved, the stacking condition of the steel slag is relieved, and obvious economic and environmental benefits are achieved.
本发明提供了一种大比例利用钢渣的全固废路面混凝土及其制备方法。按质量百分比，先将75%～90%的矿渣粉和10%～25%的粉磨工业副产石膏混匀制成胶凝材料，再按胶凝材料10%～25%、5mm～25mm粒径的转炉钢渣粗骨料13%～42.5%、小于5mm粒径转炉钢渣细骨料32.5%～68%混合，然后加入水3%～12.5%、减水剂0.1%～0.75%搅拌均匀后制得全固废路面混凝土。本发明基于多种固废的复盐效应，结合粒级与活性的双重协同优化制备全固废混凝土，解决了转炉钢渣应用于混凝土时活性低、安定性差的问题，显著提高了全固废混凝土中的钢渣掺量，所制路面混凝土具有良好的抗压强度，降低了混凝土的生产成本，提高了资源利用效率，减轻钢渣的堆存状况，具有明显的经济及环境效益。
All-solid-waste pavement concrete utilizing steel slag in large proportion and preparation method thereof
一种大比例利用钢渣的全固废路面混凝土及其制备方法
LU JIANGUANG (Autor:in) / NI WEN (Autor:in) / JIA GUOLIANG (Autor:in) / XU CHENGWEN (Autor:in) / WU BAOHUA (Autor:in) / LI XIAOQI (Autor:in) / ZHANG NING (Autor:in)
27.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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