利用飞灰烧结陶粒制备实心发泡自保温砌块

黄建立; 金宜英; 舒郅斐; 马欣欣; 褚旭

doi:10.13205/j.hjgc.202306020

利用飞灰烧结陶粒制备实心发泡自保温砌块

doi: 10.13205/j.hjgc.202306020

清华大学环境学院, 北京 100084

基金项目:

国家重点研发项目"固废资源化专项"（2019YFC1906905-5）

详细信息

作者简介:
黄建立(1993-),男,博士研究生,主要从事固废资源化工作。1263006922@qq.com

通讯作者:
金宜英(1974-),副研究员,主要从事固体废物处理处置及资源化利用等研究工作。jinyy@mail.tsinghua.edu.cn

计量
- 文章访问数: 80
- HTML全文浏览量: 13
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2022-08-09
- 网络出版日期: 2023-09-02

PREPARATION OF FOAMED SELF-INSULATING BLOCKS USING FLY ASH SINTERED CERAMSITE

School of Environment, Tsinghua University, Beijing 100084, China

摘要

摘要: 以生活垃圾焚烧飞灰烧结陶粒为主要轻集料，制备发泡型实心自保温砌块。研究了飞灰烧结陶粒配比对砌块力学性能和导热系数的影响，并且通过飞灰烧结陶粒与轻质商业化陶粒进行复配，强化保温砌块的保温性能。结果表明：砌块的导热系数随着飞灰烧结陶粒的掺量增加而下降，当添加60%飞灰烧结陶粒时，导热系数最低为0.47 W/（m·K）。当飞灰烧结陶粒与商业陶粒的比值为2：1时，砌块的导热系数、抗压强度和体积密度分别为0.33 W/（m·K）、6.89 MPa和1046.80 kg/m³，其中砌块的导热系数比不添加商业陶粒时降低了29.79%，具有较好的保温性能，为飞灰烧结陶粒制备轻质保温型建筑材料提供借鉴。
- 生活垃圾 /
- 焚烧飞灰 /
- 陶粒 /
- 保温砌块 /
- 发泡 /
- 导热系数
Abstract: In this paper, foamed self-insulating blocks were prepared using fly ash sintered ceramsite as the main lightweight aggregate. The influence of the ratio of fly ash sintered ceramsite on the mechanical properties and thermal conductivity of the insulating blocks was studied, and the thermal insulation performance of the thermal insulating block was enhanced by adding a certain amount of lightweight commercial ceramsite. The results showed that the thermal conductivity of the blocks decreased with the increasing production of fly ash sintered ceramsite, with a lowest value of 0.47 W/(m·K), when the ratio of fly ash sintered ceramsite at 60%. When the ratio of fly ash sintered ceramsite and commercial ceramsite was 2:1, the thermal conductivity, compressive strength and bulk density of the blocks were 0.33 W/(m·K), 6.89 MPa and 1046.80 kg/m³, respectively, and the thermal conductivity of the block was reduced by 29.79% when compared to the block without adding commercial ceramsite, indicating good thermal insulation performance. This study provides a guideline to produce lightweight thermal insulation building materials using fly ash sintered ceramsite.
- municipal solid waste /
- incineration fly ash /
- ceramsite /
- insulating block /
- foaming /
- thermal conductivity

HTML全文

参考文献(15)

[1]	刘俊鹏,张曙光,周建国,等. 不同烧结助剂对垃圾焚烧飞灰形成陶粒和玻璃化的影响[J]. 环境工程,2016,34(增刊1):753-756,768.
[2]	MA W C, SHI W B, SHI Y J, et al. Plasma vitrification and heavy metals solidification of MSW and sewage sludge incineration fly ash[J]. Journal of Hazardous Materials, 2021, 408:124809.
[3]	SHAO Y Y, SHAO Y Q, ZHANG W Y, et al. Preparation of municipal solid waste incineration fly ash-based ceramsite and its mechanisms of heavy metal immobilization[J]. Waste Management, 2022, 143:54-60.
[4]	ZHAN X Y, WANG L A, WANG L, et al. Co-sintering MSWI fly ash with electrolytic manganese residue and coal fly ash for lightweight ceramisite[J]. Chemosphere, 2021, 263:127914.
[5]	ZHAO H L, LIU F, LIU H Q, et al. Comparative life cycle assessment of two ceramsite production technologies for reusing municipal solid waste incinerator fly ash in China[J]. Waste Management, 2020, 113:447-455.
[6]	符勇,马喆. 基于赤泥、铝土尾矿和污泥三大工业废物的陶粒制备实验研究[J]. 能源与环保,2017,39(4):48-51 ,56.
[7]	林丽娟,刘伟,田国华,等. 建筑垃圾及陶粒生产轻质自保温砌块的研究[J]. 混凝土与水泥制品,2014(4):74-75.
[8]	周明凯,彭丽芬,王怀德,等. 氧化铁和发泡剂对煤矸石闭孔发泡陶瓷的性能影响[J]. 中国陶瓷,2015,51(2):77-80.
[9]	吴世明,雷翅,张鹏,等. 烧结制度和氧化铁含量对轻质多孔陶粒相关性能的影响研究[J]. 新型建筑材料,2018,45(4):9-12 , 123.
[10]	ZHANG Y K, MA Z Y, FANG Z T, et al. Review of harmless treatment of municipal solid waste incineration fly ash. Waste Disposal & Sustainable Energy, 2020, 2(1):1-25.
[11]	吕开清,夏多田,杨士珏,等. 新型陶粒混凝土材料配合比试验研究[J]. 混凝土,2017(4):147-150.
[12]	陆晓燕,陈宇峰,朱爱东,等. 全淤泥陶粒泡沫混凝土砌块墙体的热工性能研究[J]. 混凝土,2012(12):96-99.
[13]	王翠萍,韩涛. 陶粒预处理方式对混凝土性能的影响研究[J]. 建材技术与应用,2021(5):4-7.
[14]	李兆磊,张忠勇,宋红旭,等. 建筑垃圾陶粒混凝土复合保温砌块的试验研究[J]. 住宅与房地产,2020:109-110.
[15]	庞建勇,陈旭鹏. 高活性矿物掺合料混凝土力学性能试验[J]. 硅酸盐通报,2020,39(10):3143-3151.