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A platform for research: civil engineering, architecture and urbanism
Preparation method of environment-friendly cement by using building wastes
The invention provides a preparation method of environment-friendly cement by using building waste, and is applied to the field of building materials. In the steps of material preparation and accurate grinding, original concrete blocks are accurately ground into particles, and substances with poor heat resistance in the concrete particles are removed in the calcining process; meanwhile, particles with poor internal quality are removed through a final-step sedimentation method, so that the effects of utilizing waste materials and not reducing the original cement quality are achieved; in order to avoid the situation that after active materials such as slag and fly ash are neutralized, the overall water resistance, heat resistance and tensile strength of the cement can be improved; meanwhile, the cement has the comprehensive characteristics of being slow in coagulation, poor in freezing resistance and poor in carbon resistance, and the overall coagulation efficiency and freezing resistance are improved by adding the cement antifreeze agent and sulfur aluminum and fluorine aluminum in the grinding aid.
本申请提供了一种利用建筑废料的环保水泥制备方法，运用于建筑材料领域，通过在备料与精磨的步骤中，将其中的原本混凝土块精磨成颗粒状，在煅烧过程中将混凝土颗粒中的抗热性差的物质去除，同时再通过最后一步沉降法将内部质量较差的颗粒剔除，从而达到利用废料且不降低原本水泥质量的效果；为了避免在中和矿渣、粉煤灰等活性材料后，能提高水泥整体的抗水性能、耐热性能和抗拉强度，同时水泥也会出现凝结慢、抗冻性差、抗碳性差的综合特征，通过添加水泥抗冻剂和助磨剂中的硫铝与氟铝，提高整体凝结效率与抗冻性。
Preparation method of environment-friendly cement by using building wastes
The invention provides a preparation method of environment-friendly cement by using building waste, and is applied to the field of building materials. In the steps of material preparation and accurate grinding, original concrete blocks are accurately ground into particles, and substances with poor heat resistance in the concrete particles are removed in the calcining process; meanwhile, particles with poor internal quality are removed through a final-step sedimentation method, so that the effects of utilizing waste materials and not reducing the original cement quality are achieved; in order to avoid the situation that after active materials such as slag and fly ash are neutralized, the overall water resistance, heat resistance and tensile strength of the cement can be improved; meanwhile, the cement has the comprehensive characteristics of being slow in coagulation, poor in freezing resistance and poor in carbon resistance, and the overall coagulation efficiency and freezing resistance are improved by adding the cement antifreeze agent and sulfur aluminum and fluorine aluminum in the grinding aid.
本申请提供了一种利用建筑废料的环保水泥制备方法，运用于建筑材料领域，通过在备料与精磨的步骤中，将其中的原本混凝土块精磨成颗粒状，在煅烧过程中将混凝土颗粒中的抗热性差的物质去除，同时再通过最后一步沉降法将内部质量较差的颗粒剔除，从而达到利用废料且不降低原本水泥质量的效果；为了避免在中和矿渣、粉煤灰等活性材料后，能提高水泥整体的抗水性能、耐热性能和抗拉强度，同时水泥也会出现凝结慢、抗冻性差、抗碳性差的综合特征，通过添加水泥抗冻剂和助磨剂中的硫铝与氟铝，提高整体凝结效率与抗冻性。
Preparation method of environment-friendly cement by using building wastes
一种利用建筑废料的环保水泥制备方法
WANG CHENGCHENG (author) / LI YANJIE (author)
2021-06-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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