高碳铬铁渣基尖晶石-镁橄榄石高强陶瓷骨料的制备及性能

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (3): 1054-1062.

所属专题：陶瓷

高碳铬铁渣基尖晶石-镁橄榄石高强陶瓷骨料的制备及性能

梁金源¹, 张礼华¹, 刘来宝¹, 焦茂鹏², 荆桂花³, 刘川北¹, 辜涛¹

1.西南科技大学材料与化学学院,绵阳 621010;
2.东南大学材料科学与工程学院,南京 214135;
3.山东鲁阳节能材料股份有限公司,淄博 256120

收稿日期:2022-10-29 修订日期:2022-12-16 出版日期:2023-03-15 发布日期:2023-03-31
通信作者: 张礼华,博士,教授。E-mail:zhanglihua1250@163.com
作者简介:梁金源(1996—),女,硕士研究生。主要从事混凝土骨料的研究。E-mail:liangjinyuan96@163.com
基金资助:
国家自然科学基金(52178254);国家重点研发计划(2019YFC1904900)

Preparation and Properties of High Carbon Ferrochrome Slag-Based Spinel-Forsterite High-Strength Ceramic Aggregate

LIANG Jinyuan¹, ZHANG Lihua¹, LIU Laibao¹, JIAO Maopeng², JING Guihua³, LIU Chuanbei¹, GU Tao¹

1. School of Materials and Chemical, Southwest University of Science and Technology, Mianyang 621010, China;
2. School of Materials Science and Engineering, Southeast University, Nanjing 214135, China;
3. Luyang Energy-Saving Materials Co., Ltd., Zibo 256120, China

Received:2022-10-29 Revised:2022-12-16 Online:2023-03-15 Published:2023-03-31

摘要/Abstract

摘要： 西部地区的交通运输工程面临着极为复杂的工程地质挑战,而对适合西部深地环境使用的高性能混凝土骨料却鲜有研究。本文以高碳铬铁渣为主要原料,针对西部地区深地高温环境制备尖晶石-镁橄榄石高强陶瓷骨料,研究烧结温度、保温时间对尖晶石-镁橄榄高强陶瓷骨料物理性能、微观结构与晶体相对含量的影响。结果表明,提高烧结温度和保温时间可促进晶体生长发育,有效增强试样的物理性能。在烧结温度为1 500 ℃、保温时间为3 h条件下制备的尖晶石-镁橄榄高强陶瓷骨料的综合性能最优,表观密度为3 100 kg/m³,吸水率为1.4%,抗压强度为281.1 MPa,高碳铬铁渣的利用率达77.6%(质量分数)。将高强陶瓷骨料混凝土在80 ℃下养护28 d,其微观结构相比于高碳铬铁渣混凝土和普通骨料混凝土更为密实,界面过渡区得到显著改善,适用于深地高温环境。

关键词: 高碳铬铁渣, 陶瓷骨料, 尖晶石, 镁橄榄石, 高强, 深地高温环境

Abstract: The transportation engineering in the western region of China is facing extremely complex engineering geological challenges, while there are fewer researches on high-performance concrete aggregate suitable for the deep ground environment in the western region. High carbon ferrochrome slag was used as the main raw material to prepare spinel-forsterite high-strength ceramic aggregate for the deep ground high temperature environment in the western region. The effects of sintering temperature and holding time on the physical properties, microstructure and crystal relative content of spinel-forsterite high-strength ceramic aggregate were studied. The results show that increasing the sintering temperature and holding time promote the crystal growth and effectively enhance the physical properties of samples. Under the optimal synthetic conditions (sintering temperature 1 500 ℃, holding time 3 h), the spinel-forsterite high-strength ceramic aggregate exhibites a high compressive strength of 281.1 MPa, apparent density of 3 100 kg/m³, and water absorption of 1.4%. In this case, the utilization rate of high carbon ferrochrome slag is 77.6% (mass fraction). After curing at 80 ℃ for 28 d, the microstructure of high-strength ceramic aggregate concrete is more dense than that of high carbon ferrochrome slag concrete and ordinary aggregate concrete. Furthermore, the interfacial transition zone of high-strength ceramic aggregate concrete is significantly improved, and this concrete is suitable for the deep ground high temperature environment.

Key words: high carbon ferrochrome slag, ceramic aggregate, spinel, forsterite, high strength, deep ground high temperature environment

中图分类号:

TU52

梁金源, 张礼华, 刘来宝, 焦茂鹏, 荆桂花, 刘川北, 辜涛. 高碳铬铁渣基尖晶石-镁橄榄石高强陶瓷骨料的制备及性能[J]. 硅酸盐通报, 2023, 42(3): 1054-1062.

LIANG Jinyuan, ZHANG Lihua, LIU Laibao, JIAO Maopeng, JING Guihua, LIU Chuanbei, GU Tao. Preparation and Properties of High Carbon Ferrochrome Slag-Based Spinel-Forsterite High-Strength Ceramic Aggregate[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(3): 1054-1062.

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高碳铬铁渣基尖晶石-镁橄榄石高强陶瓷骨料的制备及性能

Preparation and Properties of High Carbon Ferrochrome Slag-Based Spinel-Forsterite High-Strength Ceramic Aggregate

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