硅灰及矿渣粉对大掺量粉煤灰砂浆力学性能的影响及机理研究

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (7): 2584-2594.

所属专题：资源综合利用

硅灰及矿渣粉对大掺量粉煤灰砂浆力学性能的影响及机理研究

刘扬¹, 王家理^1,2, 罗冬^1,2, 袁和平^1,2, 鲁乃唯¹, 王柏文^1,2

1.长沙理工大学土木工程学院,长沙 410114;
2.长沙理工大学桥梁工程安全控制教育部重点实验室,长沙 410114

收稿日期:2023-11-23 修订日期:2023-12-19 出版日期:2024-07-15 发布日期:2024-07-24
通信作者: 王家理,硕士研究生。E-mail:994532199@qq.com
作者简介:刘扬(1973—),男,博士,教授。主要从事桥梁结构安全控制与可靠度分析的研究。E-mail:liuyangbridge@163.com
基金资助:
国家自然科学基金(52178207)

Effects of Silica Fume and GGBS on Mechanical Properties of High Volume Fly Ash Mortar and Its Mechanism

LIU Yang¹, WANG Jiali^1,2, LUO Dong^1,2, YUAN Heping^1,2, LU Naiwei¹, WANG Bowen^1,2

1. School of Civil Engineering, Changsha University of Science & Technology, Changsha 410114, China;
2. Key Laboratory for Safety Control of Bridge Engineering of Ministry of Education, Changsha University of Science & Technology, Changsha 410114, China

Received:2023-11-23 Revised:2023-12-19 Online:2024-07-15 Published:2024-07-24

摘要/Abstract

摘要： 以硅灰和矿渣粉(GGBS)为辅助胶凝材料,使用聚羧酸高性能减水剂,分别研究了硅灰和GGBS对大掺量粉煤灰砂浆抗压强度的影响。通过压汞测试(MIP)、扫描电子显微镜(SEM)以及X射线衍射(XRD)等方法对制备试件的孔结构、微观产物、物相组成进行分析,得到了硅灰和GGBS影响大掺量粉煤灰砂浆强度的机理。结果表明:单掺硅灰的大掺量粉煤灰砂浆的抗压强度随着硅灰含量增加先增大后减小,单掺GGBS的规律与硅灰类似;复掺硅灰和矿渣时,砂浆的强度较其他同龄期组均有一定的提高,二者表现出良好的协同作用;无论是单掺还是复掺,硅灰和GGBS都对大掺量粉煤灰砂浆强度有良好的提升作用。砂浆试件总孔隙率和大孔占比与抗压强度总体呈负相关,强度越高的砂浆试件微观结构越致密,但相比于总孔隙率,毛细孔和大孔占比表现出与抗压强度更好的相关性。当硅灰和GGBS质量分数分别为8%和6%时,砂浆28 d强度最大,为88.05 MPa。

关键词: 大掺量粉煤灰砂浆, 硅灰, 矿渣粉, 抗压强度, 微观结构

Abstract: Using silica fume and ground granulated blast furnace slag (GGBS) as auxiliary cementitious materials and polyhydroxylic acid high-performance water reducer, the effects of silica fume and GGBS on the compressive strength of high volume fly ash mortar were studied. The pore structure, microstructure, and phase composition of prepared specimens were analyzed by mercury intrusion test (MIP), scanning electron microscope (SEM) and X-ray diffraction (XRD), and the mechanism of the effect of silica fume and GGBS on the strength of high volume fly ash mortar was obtained. The results show that with the increase of silica fume content, the compressive strength of high volume fly ash mortar mixed with silica fume increases first and then decreases. The law of GGBS mixing is similar to that of silica fume. Whether it is mixed alone or mixed, silica fume and GGBS are mixed together, the strength of mortar is improved compared with other age groups, and they show good synergy. Both silica fume and GGBS can improve the strength of high volume fly ash mortar. The total porosity and proportion of macropores of mortar specimens are negatively correlated with compressive strength. The higher the strength of mortar specimens is, the denser the microstructure is. But compared with the total porosity, the proportion of pores and macropores shows a better correlation with compressive strength. When the mass fraction of silica fume and GGBS is 8% and 6% respectively, the strength of mortar at 28 d is the highest, which is 88.05 MPa.

Key words: high volume fly ash mortar, silica fume, GGBS, compressive strength, microstructure

中图分类号:

TU528

刘扬, 王家理, 罗冬, 袁和平, 鲁乃唯, 王柏文. 硅灰及矿渣粉对大掺量粉煤灰砂浆力学性能的影响及机理研究[J]. 硅酸盐通报, 2024, 43(7): 2584-2594.

LIU Yang, WANG Jiali, LUO Dong, YUAN Heping, LU Naiwei, WANG Bowen. Effects of Silica Fume and GGBS on Mechanical Properties of High Volume Fly Ash Mortar and Its Mechanism[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(7): 2584-2594.

参考文献

[1] YAO Z T, JI X S, SARKER P K, et al. A comprehensive review on the applications of coal fly ash[J]. Earth-Science Reviews, 2015, 141: 105-121.
[2] 黄好荣. 粒化高炉矿渣粉开发利用研究[J]. 技术与市场, 2021, 28(8): 54-55+58.
HUANG H R. Study on development and utilization of granulated blast furnace slag powder[J]. Technology and Market, 2021, 28(8): 54-55+58 (in Chinese).
[3] BENHELAL E, ZAHEDI G, SHAMSAEI E, et al. Global strategies and potentials to curb CO₂ emissions in cement industry[J]. Journal of Cleaner Production, 2013, 51: 142-161.
[4] MONTEIRO P J M, MILLER S A, HORVATH A. Towards sustainable concrete[J]. Nature Materials, 2017, 16(7): 698-699.
[5] OH D Y, NOGUCHI T, KITAGAKI R, et al. CO₂ emission reduction by reuse of building material waste in the Japanese cement industry[J]. Renewable and Sustainable Energy Reviews, 2014, 38: 796-810.
[6] AHMAD J, KONTOLEON K J, MAJDI A, et al. A comprehensive review on the ground granulated blast furnace slag (GGBS) in concrete production[J]. Sustainability, 2022, 14(14): 8783.
[7] CHOUSIDIS N, IOANNOU I, RAKANTA E, et al. Effect of fly ash chemical composition on the reinforcement corrosion, thermal diffusion and strength of blended cement concretes[J]. Construction and Building Materials, 2016, 126: 86-97.
[8] CHOUSIDIS N, RAKANTA E, IOANNOU I, et al. Mechanical properties and durability performance of reinforced concrete containing fly ash[J]. Construction and Building Materials, 2015, 101: 810-817.
[9] ATZENI C, PIA G, SANNA U. A geometrical fractal model for the porosity and permeability of hydraulic cement pastes[J]. Construction and Building Materials, 2010, 24(10): 1843-1847.
[10] LAVASANI H, WERNER A. Practicality and sustainability of using HVFA for concrete sidewalks[C]//Construction Research Congress 2012. West Lafayette, Indiana, USA. Reston, VA: American Society of Civil Engineers, 2012: 1931-1940.
[11] 孙振平, 舒翔, 马建新. 大掺量粉煤灰混凝土早期性能的改善[J]. 粉煤灰, 1999, 11(1): 10-13.
SUN Z P, SHU X, MA J X. Improvement of early performance of concrete with large amount of fly ash[J]. Coal Ash, 1999, 11(1): 10-13 (in Chinese).
[12] 李茂森, 王露, 王军, 等. 大掺量矿物掺合料混凝土碳化行为研究进展[J]. 硅酸盐通报, 2023, 42(11): 3787-3798.
LI M S, WANG L, WANG J, et al. Research progress on carbonation behavior of concrete with large volume of mineral admixture[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(11): 3787-3798 (in Chinese).
[13] SHELOTE K M, BALA A N, GUPTA S. An overview of mechanical, permeability, and thermal properties of silica fume concrete using bibliographic survey and building information modelling[J]. Construction and Building Materials, 2023, 385: 131489.
[14] MEGAT JOHARI M A, BROOKS J J, KABIR S, et al. Influence of supplementary cementitious materials on engineering properties of high strength concrete[J]. Construction and Building Materials, 2011, 25(5): 2639-2648.
[15] RASHAD A M, SELEEM H E D H, SHAHEEN A F. Effect of silica fume and slag on compressive strength and abrasion resistance of HVFA concrete[J]. International Journal of Concrete Structures and Materials, 2014, 8(1): 69-81.
[16] REDDY SUDA V B, SRINIVASA RAO P. Experimental investigation on optimum usage of Micro silica and GGBS for the strength characteristics of concrete[J]. Materials Today: Proceedings, 2020, 27: 805-811.
[17] JIANG L H, GUAN Y G. Pore structure and its effect on strength of high-volume fly ash paste[J]. Cement and Concrete Research, 1999, 29(4): 631-633.
[18] DAS K K, LAM E S S, JANG J G. Effects of modified binders on flowability of grout and properties of preplaced aggregate concrete[J]. Journal of Building Engineering, 2023, 68: 106235.
[19] NWANKWO C O, BAMIGBOYE G O, DAVIES I E E, et al. High volume Portland cement replacement: a review[J]. Construction and Building Materials, 2020, 260: 120445.
[20] 汪潇, 王宇斌, 杨留栓, 等. 高性能大掺量粉煤灰混凝土研究[J]. 硅酸盐通报, 2013, 32(3): 523-527+532.
WANG X, WANG Y B, YANG L S, et al. High-performance high-volume fly ash concrete[J]. Bulletin of the Chinese Ceramic Society, 2013, 32(3): 523-527+532 (in Chinese).
[21] 巫美强, 刘数华, 高志扬. 硅灰和粉煤灰在200 MPa活性粉末混凝土中的应用机理[J]. 混凝土, 2020(3): 142-145.
WU M Q, LIU S H, GAO Z Y. Mechanism of silica fume and fly ash in 200 MPa reactive powder concrete[J]. Concrete, 2020(3): 142-145 (in Chinese).
[22] ONER A, AKYUZ S. An experimental study on optimum usage of GGBS for the compressive strength of concrete[J]. Cement and Concrete Composites, 2007, 29(6): 505-514.
[23] ALI QURESHI L, ALI B, ALI A. Combined effects of supplementary cementitious materials (silica fume, GGBS, fly ash and rice husk ash) and steel fiber on the hardened properties of recycled aggregate concrete[J]. Construction and Building Materials, 2020, 263: 120636.

硅灰及矿渣粉对大掺量粉煤灰砂浆力学性能的影响及机理研究

Effects of Silica Fume and GGBS on Mechanical Properties of High Volume Fly Ash Mortar and Its Mechanism

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	孙嘉琦, 刘曦, 王传林, 苏芝棋, 鲁鑫, 麦靖敏. 硅烷偶联剂改性聚丙烯纤维水泥基复合材料的性能研究[J]. 硅酸盐通报, 2024, 43(7): 2355-2362.
[2]	吕阳, 范福龙, 吴远帅, 朱艳超, 张呈山, 李相国. 纳米二氧化硅负载丙烯酰胺型SAP内养护性能研究[J]. 硅酸盐通报, 2024, 43(7): 2393-2403.
[3]	李康, 高萌, 邹敏, 刘娟红, 谢永江. 碳酸盐环境对隧道混凝土性能和微观特征的影响[J]. 硅酸盐通报, 2024, 43(7): 2415-2426.
[4]	李相国, 魏武, 何超, 蔡礼雄, 吕阳, 但建明. 轻质高强蒸压加气混凝土的制备及性能研究[J]. 硅酸盐通报, 2024, 43(7): 2427-2433.
[5]	李安, 王彦军, 张志杰, 范志宏. 有机酸活化偏高岭土混凝土性能研究[J]. 硅酸盐通报, 2024, 43(7): 2434-2440.
[6]	李卫红, 郭文斌, 郭向兵, 陈潇, 周明凯. CFB灰渣混凝土的组成设计与应用研究[J]. 硅酸盐通报, 2024, 43(7): 2530-2538.
[7]	杨林, 杨建宇, 杨伟军. 新型复合激发锂渣基固化剂加固软土试验研究[J]. 硅酸盐通报, 2024, 43(7): 2556-2564.
[8]	胡凯伟, 陈轩, 李廷锋, 张俊杰, 高璇, 杨涛. 机械活化对碳酸钠激发矿渣胶凝材料早期性能的影响[J]. 硅酸盐通报, 2024, 43(7): 2577-2583.
[9]	曹丹, 沈锭, 姚瞬雨, 丁之尧, 黄梓谕, 李梦琪, 黄慕洋, 包申旭. 淤泥和电石渣基新型轻质陶砖的制备[J]. 硅酸盐通报, 2024, 43(7): 2595-2601.
[10]	汪锦东, 罗梦婷, 鹿庆蕊, 王秋哲, 李栋伟. 干湿循环下稻草秸秆-聚乙烯醇增强粉质黏土强度特性与微观机理[J]. 硅酸盐通报, 2024, 43(7): 2630-2639.
[11]	张彪, 刘泓宇, 齐南, 王芬, 朱建锋, 李立, 马涛, 罗宏杰, 施佩. 氧化石墨烯对天然水硬性石灰水化及力学性能的影响[J]. 硅酸盐通报, 2024, 43(7): 2640-2648.
[12]	王象庚, 陈佩圆, 李进, 赵成, 顾志成. 硅灰热焊接改性塑料颗粒对砂浆抗压强度与微结构的影响[J]. 硅酸盐通报, 2024, 43(6): 1975-1982.
[13]	陈昊, 王怀志, 王鹏, 肖民, 吴娟, 唐延丰, 李方贤, 韦江雄. 机制砂砂浆界面过渡区特性研究[J]. 硅酸盐通报, 2024, 43(6): 1992-1998.
[14]	刘远, 刘孝通, 杨安旭, 张远永, 杨林. 氟硅渣改性硫酸铝基无碱液体速凝剂对水泥性能的影响[J]. 硅酸盐通报, 2024, 43(6): 2005-2011.
[15]	杨世界, 张士萍, 牛龙龙, 张守卫. 不同环境溶液下高吸水树脂对水泥基材料的裂缝修复性[J]. 硅酸盐通报, 2024, 43(6): 2012-2021.