Safety and environmental protection application of high performance solid waste unburned ceramsite and its lightweight high strength concrete

城市固体废物 废物管理 材料科学 环境科学 工程类
作者
Kangkang Tang,An H,C.C. Liu,Y. Li,Jia Liu,Yanjun Tang,Q Wang,Yong Jiang,Zijian Song
出处
期刊:Sustainable Chemistry and Pharmacy [Elsevier]
卷期号:40: 101611-101611
标识
DOI:10.1016/j.scp.2024.101611
摘要

The utilization of solid waste building materials is conducive to the green and low-carbon development of the construction industry. In this study, fly ash, red mud and other solid waste were used to prepare high-performance solid waste unburned ceramsite, and the mix ratio design of lightweight high-strength concrete was carried out. The main conclusions are as follows: The prepared solid waste unburned ceramsite has a compressive strength of 8.9 MPa, a bulk density of 556 kg/m3, and a 1 h water absorption of 5.9%, which meets the relevant requirements of "Lightweight aggregates and its test methods-Part 1: Lightweight aggregates" (GB/T 17431.1–2010). Microstructure analysis demonstrated that the internal hydration products of unburned ceramsite were mainly hydrated calcium silicate and ettringite. On the basis of the detection and analysis of the content of six heavy metals in unburned ceramsite, the pollution assessment results of unburned ceramsite were consistent by means of the environmental assessment. That is, there is no environmental risk for the six heavy metals. At the same time, the Cr, As and Cd in unburned ceramsite need to be controlled, as they pose a carcinogenic risk to the human body. Therefore, the risk control of heavy metals Cr, As and Cd in unburned ceramsite was carried out. The 28 d compressive strength of lightweight high-strength concrete (cement 756 kg, silica fume 42 kg, slag powder 42 kg, floating beads 210 kg, ceramsite 165 kg, water reducer 16.8 kg, defoamer 2 kg, thickener 5 kg, water 218.4 kg) prepared by unburned ceramsite can reach 45.2 MPa, the dry apparent density is 1435 kg/m3, and the slump and expansion are 240 mm and 635 mm respectively, which meet the relevant requirements in the "Technical standard for application of lightweight aggregate concrete" (JGJ/T 12–2019). By calculating the carbon emission reduction of unburned ceramsite lightweight high-strength concrete, it is found that the carbon emission generated during the production and transportation of unburned ceramsite lightweight high-strength concrete is much smaller than that of ordinary lightweight high-strength concrete. The above results can provide basic theoretical support for the utilization of solid waste resources for lightweight high-strength concrete.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
泡沫没有冰完成签到 ,获得积分10
刚刚
bkagyin应助做科研的小丸子采纳,获得10
刚刚
1秒前
Xk16发布了新的文献求助10
2秒前
2秒前
3秒前
3秒前
4秒前
谨言完成签到 ,获得积分10
7秒前
zmy发布了新的文献求助10
8秒前
8秒前
打打应助犹豫的梦山采纳,获得10
8秒前
9秒前
xinanfeng发布了新的文献求助20
9秒前
诸葛翼德完成签到,获得积分10
11秒前
13秒前
zhazd发布了新的文献求助10
13秒前
fr0zen完成签到,获得积分10
14秒前
小吴完成签到,获得积分10
17秒前
18秒前
zzz完成签到 ,获得积分10
18秒前
思源应助含蓄含烟采纳,获得10
19秒前
葡萄成熟时完成签到,获得积分10
19秒前
19秒前
20秒前
搜集达人应助闹闹采纳,获得10
20秒前
万能图书馆应助马树成采纳,获得10
21秒前
zhazd完成签到,获得积分10
24秒前
24秒前
可爱的函函应助非非采纳,获得10
24秒前
小郭发布了新的文献求助10
25秒前
HYH发布了新的文献求助10
25秒前
ccc发布了新的文献求助20
27秒前
29秒前
anan_0528完成签到 ,获得积分10
29秒前
30秒前
非非完成签到,获得积分10
30秒前
zcydbttj2011发布了新的文献求助10
31秒前
31秒前
31秒前
高分求助中
좌파는 어떻게 좌파가 됐나:한국 급진노동운동의 형성과 궤적 2500
Sustainability in Tides Chemistry 1500
TM 5-855-1(Fundamentals of protective design for conventional weapons) 1000
Cognitive linguistics critical concepts in linguistics 800
Threaded Harmony: A Sustainable Approach to Fashion 799
Livre et militantisme : La Cité éditeur 1958-1967 500
氟盐冷却高温堆非能动余热排出性能及安全分析研究 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3050909
求助须知:如何正确求助?哪些是违规求助? 2708236
关于积分的说明 7412010
捐赠科研通 2352411
什么是DOI,文献DOI怎么找? 1245174
科研通“疑难数据库(出版商)”最低求助积分说明 605463
版权声明 595796