摘要
为提高工业固体废弃物的利用率,降低建筑行业中水泥的使用量,以废弃泡沫混凝土、钢渣和矿渣为原料,研制出了适合建筑混凝土用的绿色环保型胶凝材料。以材料的流动度和抗压强度为评价指标,考察了废弃泡沫混凝土、钢渣和矿渣的掺量对绿色胶凝材料性能的影响。实验结果表明,随着废弃泡沫混凝土掺量的逐渐增大,绿色胶凝材料的流动度和养护不同龄期的抗压强度均逐渐减小;随着钢渣掺量的逐渐增大,绿色胶凝材料的流动度先减小后增大,抗压强度逐渐减小;随着矿渣掺量的逐渐增大,绿色胶凝材料的流动度先增大后减小,抗压强度逐渐减小。其中废弃泡沫混凝土对绿色胶凝材料的流动度和抗压强度的影响相对较大,而钢渣和矿渣的影响则相对较小。推荐绿色环保胶凝材料中废弃泡沫混凝土的掺量为20%,钢渣的掺量为15%,矿渣的掺量为30%,水泥的掺量为35%。绿色环保胶凝材料的使用能够大幅降低建筑材料中水泥的使用量。
In order to improve the utilization rate of industrial solid waste and reduce the use of cement in the construction industry,a green and environment-friendly cementitious material suitable for building concrete was developed with waste foam concrete,steel slag and slag as raw materials.Taking the fluidity and compressive strength of materials as evaluation indexes,the influence of the content of waste foam concrete,steel slag and slag on the performance of green cementitious materials was investigated.The test results show that the fluidity of green cementitious materials and the compressive strength of different curing ages gradually decrease with the increase of the amount of waste foam concrete;With the gradual increase of steel slag content,the flowability of green cementitious materials first decreases and then increases,and the compressive strength gradually decreases;As the slag content gradually increases,the flowability of green cementitious materials first increases and then decreases,and the compressive strength gradually decreases.Among them,waste foam concrete has a relatively large impact on the fluidity and compressive strength of green cementitious materials,while steel slag and slag have a relatively small impact.It is recommended that 20% of waste foam concrete,15% of steel slag,30% of slag and 35% of cement should be used as green cementitious materials.The use of green and environmentally friendly cementitious materials can significantly reduce the amount of cement used in building materials.
作者
王洲杰
黄艳妮
WANG Zhou-jie;HUANG Yan-ni(Shaanxi Polytechnic Institute,Xianyang 712000,China)
出处
《化学工程师》
CAS
2024年第8期89-93,共5页
Chemical Engineer
基金
国家自然科学基金面上项目(52078407)。
关键词
混凝土
绿色胶凝材料
掺量
钢渣和矿渣
工作性能
力学性能
concrete
green cementitious materials
dosage
steel slag and slag
working performance
mechanical property
