| 引用本文: | 石东升,王鑫鑫,彭思凯,王丽红.水淬生活垃圾焚烧灰渣微粉作为混凝土掺合料的试验研究[J].材料科学与工艺,2025,33(5):88-96.DOI:10.11951/j.issn.1005-0299.20240081. |
| SHI Dongsheng,WANG Xinxin,PENG Sikai,WANG Lihong.Experimental study on use of pulverized ash residue from water quenched domestic refuse incineration as concrete admixture[J].Materials Science and Technology,2025,33(5):88-96.DOI:10.11951/j.issn.1005-0299.20240081. |
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| 水淬生活垃圾焚烧灰渣微粉作为混凝土掺合料的试验研究 |
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石东升1,2,王鑫鑫1,彭思凯1,3,王丽红4
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(1.内蒙古工业大学 土木工程学院,呼和浩特010051;2.内蒙古自治区土木工程结构与力学重点实验室, 呼和浩特010051;3.山东能源集团西北矿业内蒙古双欣矿业有限公司,内蒙古 鄂尔多斯017000;4.呼和浩特职业学院,呼和浩特010070)
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| 摘要: |
| 为探究水淬生活垃圾焚烧灰渣微粉(简称水淬灰渣微粉)自身活性以及有无作为混凝土掺合料的潜质,本文将生活垃圾焚烧灰渣通过高温熔融水淬处理后磨细得到水淬灰渣微粉,用快速水硬性试验和胶砂试验测试了水淬生活垃圾焚烧灰渣微粉的水硬性,并进行了水淬生活垃圾焚烧灰渣微粉作为混凝土掺合料的相关实验。结果表明,水淬灰渣微粉具有潜在水硬性；和普通混凝土一样,水淬灰渣微粉混凝土抗压强度、劈裂抗拉强度、弹性模量随龄期的增长而增加,随微粉比表面积的提高而增加,随微粉掺合率的增加而降低,尤其是微粉比表面积为850 m2/kg、掺量为10%(质量分数)时,其抗压强度高于对照组普通混凝土；由于水淬生活垃圾焚烧灰渣具有潜在水硬性且水化反应缓慢,使得灰渣混凝土在长龄期时力学性能的增长率高于普通混凝土。 |
| 关键词: 生活垃圾焚烧灰渣 水淬 微粉 混凝土 水硬性 力学性能 |
| DOI：10.11951/j.issn.1005-0299.20240081 |
| 分类号:TU528 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(52068058)；内蒙古自治区自然科学基金资助项目(2023MS05009)；鄂尔多斯市重点研发计划项目(YF20232329). |
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| Experimental study on use of pulverized ash residue from water quenched domestic refuse incineration as concrete admixture |
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SHI Dongsheng1,2, WANG Xinxin1, PENG Sikai1,3, WANG Lihong4
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(1.School of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051, China; 2.Key Laboratory of Civil Engineering Structure and Mechanics, Inner Mongolia University of Technology, Hohhot 010051,China; 3.Shandong Energy Group Northwest Mining Inner Mongolia Shuangxin Mining Co., Ltd., Erdos 017000,China; 4.Hohhot Vocational College,Hohhot 010070, China)
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| Abstract: |
| In order to explore the inherent activity of water-quenched municipal solid waste incineration ash micro-powder (referred to as water-quenched ash micro-powder) and its potential as a concrete admixture, relevant experimental work is carried out in this paper. Firstly, the municipal solid waste incineration ash is subjected to high-temperature melting, water quenching, and then ground to obtain water-quenched ash micro-powder. The water-hardening property of water-quenched municipal solid waste incineration ash micro-powder is tested by rapid water-hardening test and mortar test, and relevant experiments of using water-quenched municipal solid waste incineration ash micro-powder as a concrete admixture are conducted. The results show that water-quenched municipal solid waste incineration ash micro-powder has potential water-hardening ability.Similar to ordinary concrete, the compressive strength, splitting tensile strength, and elastic modulus of water-quenched municipal solid waste incineration ash micro-powder concrete increase with age, increases with the rise in specific surface area of the micro-powder and decreases with the increase of the micro-powder blending rate. In particular, the compressive strength of water-quenched ash micro-powder concrete with a specific surface area of 850 m2/kg and a blending amount of 10% is higher than that of the control group of ordinary concrete.Due to the potential water-hardening ability of municipal solid waste incineration ash, the growth rate of the mechanical properties of ash concrete at extended ages is higher than that of ordinary concrete. This is because the hydration reaction of water-quenched municipal solid waste incineration ash micro-powder is slow, making its mechanical properties at extended ages more advantageous than that of ordinary concrete. |
| Key words: raw household waste slag water hardening micro-mist concrete hydraulicity mechanical property |
