中国资源综合利用2024，Vol.42Issue(6)：33-38,6.DOI:10.3969/j.issn.1008-9500.2024.06.009
建筑垃圾再生微粉资源化利用的试验研究
Experimental Study on the Resource Utilization of Recycled Micro Powder from Construction Waste
高永涛 1陈欢 1张银亮 1杨陈 1吴原森 1张益1
作者信息
- 1. 湖南中邦再生资源科技有限公司,长沙 410600
- 折叠
摘要
Abstract
In order to improve the utilization rate and added value of recycled micro powder from construction waste,alkaline excitation,mechanical grinding,and a combination of two excitation methods are used to excite the activity of recycled micro powder,and recycled micro powder is used to replace some cement(with a content of 30%)to prepare rubber sand test blocks,after 28 d of standard curing,the compressive strength test results are used to evaluate the activity excitation effect of recycled micro powder.The results show that Ca(OH)2 and Na2SO3·9H2O are mixed and ball milled in a 1∶1 ratio for 15 min,with an activator content of 2.5%,and the recycled micro powder has the best activity.After 28 d of curing,compared with the control group that uses only ordinary Portland cement as the cementitious material,the compressive strength of the rubber sand test block prepared by using Ca(OH)2+Na2SO3·9H2O as the activator and partially replacing cement with recycled micro powder decreases by only 1.82%,compared with the control group that partially replaces cement with fly ash(with a dosage of 30%),the compressive strength of the former is significantly higher.关键词
建筑垃圾/再生微粉/资源化利用/抗压强度/碱激发/机械研磨Key words
construction waste/recycled micro powder/resource utilization/compressive strength/alkali excitation/mechanical grinding分类
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高永涛,陈欢,张银亮,杨陈,吴原森,张益..建筑垃圾再生微粉资源化利用的试验研究[J].中国资源综合利用,2024,42(6):33-38,6.
