碱激发粉煤灰-矿渣-电石渣基地聚物的制备及强度机理

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (4): 1353-1362.

所属专题：资源综合利用

碱激发粉煤灰-矿渣-电石渣基地聚物的制备及强度机理

刘扬¹, 陈湘^1,2, 王柏文^1,2, 鲁乃唯¹, 肖欣欣^1,2, 罗冬^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:2022-11-24 修订日期:2023-01-18 出版日期:2023-04-15 发布日期:2023-04-25
通信作者: 陈湘,硕士研究生。E-mail:Cheninsomnia@163.com
作者简介:刘扬(1973—),男,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)

Preparation and Strength Mechanism of Alkali-Activated Fly Ash-Slag-Carbide Slag Based Geopolymer

LIU Yang¹, CHEN Xiang^1,2, WANG Bowen^1,2, LU Naiwei¹, XIAO Xinxin^1,2, LUO Dong^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:2022-11-24 Revised:2023-01-18 Online:2023-04-15 Published:2023-04-25

摘要/Abstract

摘要： 以粉煤灰、矿渣、电石渣为前驱体,采用氢氧化钠-水玻璃混合激发剂,将两者混合制备地聚物。考察前驱体配比和激发剂参数对粉煤灰-矿渣-电石渣基地聚物抗压强度的影响,通过压汞测试(MIP)和扫描电子显微镜(SEM)等对材料微观结构进行研究。结果表明:地聚物抗压强度随电石渣取代粉煤灰量、液固比和激发剂模数的增加先增大后减小,当电石渣取代矿渣量减少或激发剂浓度增加时,抗压强度不断上升;地聚物的总孔隙率和大孔占比总体与抗压强度呈负相关,强度越高的地聚物微观结构越致密。试验得出的地聚物最优配比为粉煤灰、矿渣、电石渣质量比为32∶15∶3,液固比为0.55,激发剂浓度为30%(质量分数),激发剂模数为1.2,对应的28 d抗压强度为77.83 MPa。

关键词: 地聚物, 电石渣, 粉煤灰, 矿渣, 抗压强度, 微观结构

Abstract: In this paper, fly ash, slag and carbide slag were used as precursors, and sodium hydroxide and sodium silicate were used as mixed activators to prepare geopolymer. The effects of precursor ratio and activator parameters on the compressive strength of fly ash-slag-carbide slag based geopolymer were investigated, and the microstructure was observed by mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM). It is found that the compressive strength of geopolymer increases first and then decreases with the increase of the carbide slag replacing fly ash content, liquid-solid ratio, and activator modulus. When the carbide slag replacing slag content decreases, or the activator concentration increases, the compressive strength increases continuously. Adding carbide slag in the precursors with appropriate amount to replace fly ash positively affects the geopolymer compressive strength. The total porosity and the large pore proportion of geopolymer are generally negatively correlated with the compressive strength. The higher the strength is, the denser the microstructure of geopolymer is. The optimum ratio of geopolymer derived from the test is 32∶15∶3 for the mass ratio of fly ash, slag and carbide slag, 0.55 for the liquid-solid ratio, 30% (mass fraction) for the activator concentration, and 1.2 for the activator modulus, which corresponds to a 28 d compressive strength of 77.83 MPa.

Key words: geopolymer, carbide slag, fly ash, slag, compressive strength, microstructure

中图分类号:

TU502

刘扬, 陈湘, 王柏文, 鲁乃唯, 肖欣欣, 罗冬. 碱激发粉煤灰-矿渣-电石渣基地聚物的制备及强度机理[J]. 硅酸盐通报, 2023, 42(4): 1353-1362.

LIU Yang, CHEN Xiang, WANG Bowen, LU Naiwei, XIAO Xinxin, LUO Dong. Preparation and Strength Mechanism of Alkali-Activated Fly Ash-Slag-Carbide Slag Based Geopolymer[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(4): 1353-1362.

参考文献

[1] 赵立文, 朱干宇, 李少鹏, 等. 电石渣特性及综合利用研究进展[J]. 洁净煤技术, 2021, 27(3): 13-26.
ZHAO L W, ZHU G Y, LI S P, et al. Research progress on characteristics and comprehensive utilization of calcium carbide slag[J]. Clean Coal Technology, 2021, 27(3): 13-26 (in Chinese).
[2] 曹春霞, 王波, 成怀刚, 等. 电石渣及二氧化碳资源化利用现状与展望[J]. 化工矿物与加工, 2022, 51(2): 1-9.
CAO C X, WANG B, CHENG H G, et al. The status and outlook of the resource utilization of calcium carbide slag and carbon dioxide[J]. Industrial Minerals & Processing, 2022, 51(2): 1-9 (in Chinese).
[3] DAVIDOVITS J. Geopolymers and geopolymeric materials[J]. Journal of Thermal Analysis, 1989, 35(2): 429-441.
[4] 赵献辉, 王浩宇, 周博宇, 等. 粉煤灰基地聚物的性能影响因素及其凝胶产物研究进展[J]. 硅酸盐通报, 2021, 40(3): 867-876.
ZHAO X H, WANG H Y, ZHOU B Y, et al. Research development on influencing factors of performances and gel products in fly ash-based geopolymer material[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(3): 867-876 (in Chinese).
[5] SOUTSOS M, BOYLE A P, VINAI R, et al. Factors influencing the compressive strength of fly ash based geopolymers[J]. Construction and Building Materials, 2016, 110: 355-368.
[6] ASSI L N, DEAVER E E, ELBATANOUNY M K, et al. Investigation of early compressive strength of fly ash-based geopolymer concrete[J]. Construction and Building Materials, 2016, 112: 807-815.
[7] NATH P, SARKER P K. Effect of GGBFS on setting, workability and early strength properties of fly ash geopolymer concrete cured in ambient condition[J]. Construction and Building Materials, 2014, 66: 163-171.
[8] PHOO-NGERNKHAM T, PHIANGPHIMAI C, INTARABUT D, et al Low cost and sustainable repair material made from alkali-activated high-calcium fly ash with calcium carbide residue[J]. Construction and Building Materials, 2020, 247: 118543.
[9] MEESALA C R, VERMA N K, KUMAR S. Critical review on fly-ash based geopolymer concrete[J]. Structural Concrete, 2020, 21(3): 1013-1028.
[10] 陈晨, 程婷, 贡伟亮, 等. 粉煤灰地聚物反应体系下的反应动力学研究[J]. 硅酸盐通报, 2016, 35(9): 2717-2723.
CHEN C, CHENG T, GONG W L, et al. Reaction kinetics of fly ash based geopolymer systems[J]. Bulletin of the Chinese Ceramic Society, 2016, 35(9): 2717-2723 (in Chinese).
[11] 段玉杰, 周伟, 姬翔, 等. 水固比对溶胶-凝胶法合成地聚物性能的影响[J]. 水力发电学报, 2020, 39(1): 102-109.
DUAN Y J, ZHOU W, JI X, et al. Effect of water-solid ratio on geopolymer synthesized using sol-gel method[J]. Journal of Hydroelectric Engineering, 2020, 39(1): 102-109 (in Chinese).
[12] 刘进琪, 王世玉, 彭晖, 等. 碱激发剂对粉煤灰基地聚物性能影响研究[J]. 交通科学与工程, 2020, 36(3): 8-13.
LIU J Q, WANG S Y, PENG H, et al. Study on the effect of alkali activator on the properties of fly ash-based geopolymer[J]. Journal of Transport Science and Engineering, 2020, 36(3): 8-13 (in Chinese).
[13] 丁兆洋, 苏群, 李明泽, 等. 水玻璃模数对地聚物再生混凝土力学性能影响[J/OL]. 建筑材料学报, 2022: 1-13 (2022-03-08) [2022-10-20]. https://kns.cnki.net/kcms/detail/31.1764.TU.20220307.0902.002.html.
DING Z Y, SU Q, LI M Z, et al. Water-glass modulus on mechanical properties of geopolymer recycled aggregate concrete[J/OL]. Journal of Building Materials, 2022: 1-13 (2022-03-08) [2022-10-20]. https://kns.cnki.net/kcms/detail/31.1764.TU.20220307.0902.002.html (in Chinese).
[14] 彭晖, 崔潮, 蔡春声, 等. 激发剂浓度对偏高岭土基地聚物性能的影响机制[J]. 复合材料学报, 2016, 33(12): 2952-2960.
PENG H, CUI C, CAI C S, et al. Mechanism of activator concentration influencing properties of metakaolin-based geopolymer[J]. Acta Materiae Compositae Sinica, 2016, 33(12): 2952-2960 (in Chinese).
[15] CHEN K L, LIN W T, LIU W D. Effect of NaOH concentration on properties and microstructure of a novel reactive ultra-fine fly ash geopolymer[J]. Advanced Powder Technology, 2021, 32(8): 2929-2939.
[16] PHETCHUAY C, HORPIBULSUK S, SUKSIRIPATTANAPONG C, et al. Calcium carbide residue: alkaline activator for clay-fly ash geopolymer[J]. Construction and Building Materials, 2014, 69: 285-294.
[17] MA X Q, ZHAO M Q, CHEN D J, et al. Preparation of a novel composite geopolymer based on calcium carbide slag-fly ash and its characterization, mechanism and adsorption properties[J]. Water Science and Technology, 2022, 85(8): 2389-2397.
[18] 万宗华, 张文芹, 刘志超, 等. 电石渣-矿渣复合胶凝材料性能研究[J]. 硅酸盐通报, 2022, 41(5): 1704-1714.
WAN Z H, ZHANG W Q, LIU Z C, et al. Properties of carbide slag-slag composite cementitious material[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(5): 1704-1714 (in Chinese).
[19] 夏琳玲, 吴大志, 陈柯宇. 粉煤灰基地质聚合物的性能研究及机理分析[J]. 水利规划与设计, 2021(4): 79-82+132+137.
XIA L L, WU D Z, CHEN K Y. Study on properties and mechanism of fly ash based geopolymer[J]. Water Resources Planning and Design, 2021(4): 79-82+132+137 (in Chinese).
[20] 施惠生, 夏明, 郭晓潞. 粉煤灰基地聚合物反应机理及各组分作用的研究进展[J]. 硅酸盐学报, 2013, 41(7): 972-980.
SHI H S, XIA M, GUO X L. Research development on mechanism of fly ash-based geopolymer and effect of each component[J]. Journal of the Chinese Ceramic Society, 2013, 41(7): 972-980 (in Chinese).
[21] ZHANG M H, LI H. Pore structure and chloride permeability of concrete containing nano-particles for pavement[J]. Construction and Building Materials, 2011, 25(2): 608-616.

碱激发粉煤灰-矿渣-电石渣基地聚物的制备及强度机理

Preparation and Strength Mechanism of Alkali-Activated Fly Ash-Slag-Carbide Slag Based Geopolymer

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]	范小春, 汪阳, 高旭, 张宇, 袁波. 亚硝酸钙与富铝矿相协同调控碱矿渣氯离子固化能力研究[J]. 硅酸盐通报, 2023, 42(4): 1148-1155.
[2]	齐晓, 肖前慧, 邱继生, 刘书林. 冻融循环与硫酸盐侵蚀共同作用下再生混凝土的微观结构研究[J]. 硅酸盐通报, 2023, 42(4): 1194-1204.
[3]	陈春红, 俞江, 刘荣桂, 王磊, 刘惠, 伍金龙. 干湿循环下再生细骨料混凝土的氯离子渗透性能[J]. 硅酸盐通报, 2023, 42(4): 1217-1225.
[4]	张虹宇, 郑玉龙, 陆春华. 两种养护制度下C100高强混凝土韧性对比试验研究[J]. 硅酸盐通报, 2023, 42(4): 1252-1259.
[5]	张劲竹, 刘华新, 王家贺, 柳根金, 王学志. 混杂纤维混凝土高温后性能劣化分析与强度预测[J]. 硅酸盐通报, 2023, 42(4): 1260-1269.
[6]	胡彪, 李先海, 晏祥政, 赵永庆. 热活化煤矸石粉对基体-骨料界面过渡区性能的影响[J]. 硅酸盐通报, 2023, 42(4): 1315-1322.
[7]	安赛, 王宝民, 陈文秀, 赵庆新. 电石渣激发矿渣-粉煤灰复合胶凝材料的作用机制[J]. 硅酸盐通报, 2023, 42(4): 1333-1343.
[8]	何俊, 管家贤, 吕晓龙, 张驰. 纳米硅粉改良碱渣-矿渣固化淤泥的抗硫酸镁侵蚀性能[J]. 硅酸盐通报, 2023, 42(4): 1344-1352.
[9]	张先伟, 高永红, 王平, 李江山, 刘世宇, 郎雷, 雷学文. 电解锰渣-生活垃圾焚烧底渣协同制备路面基层材料试验研究[J]. 硅酸盐通报, 2023, 42(4): 1363-1373.
[10]	黄利祥, 刘泽, 原航, 王栋民, 危鹏, 姜宏健. 赤泥-石膏复合激发蒸压加气混凝土的制备与性能研究[J]. 硅酸盐通报, 2023, 42(4): 1393-1399.
[11]	陈富文, 桑绍柏, 万卓夫, 马宇洲, 廖宁. 粉煤灰和烧成温度对矾土基轻量莫来石材料结构及性能的影响[J]. 硅酸盐通报, 2023, 42(4): 1488-1495.
[12]	施晓晨, 水中和, 李浩源, 肖勋光, 孙涛, 王雷冲. 紫外预处理对硅酸盐水泥浆体早期碳化性能的影响[J]. 硅酸盐通报, 2023, 42(3): 786-792.
[13]	周剑峰, 杨涛, 张菁燕, 周文平, 高璇. 早期水热养护对铝酸钙水泥结构稳定性的影响[J]. 硅酸盐通报, 2023, 42(3): 802-807.
[14]	葛津宇, 韦华, 徐菲, 韩雪松, 朱鹏飞, 肖怀前, 李怀森. CSH-蒙脱石界面能对水泥固化蒙脱土抗压强度的影响[J]. 硅酸盐通报, 2023, 42(3): 827-836.
[15]	陈新明, 张浩文, 焦华喆, 杨柳华, 荣阳阳. HPMC及硼砂对新型防漏高强注浆料性能及微观结构的影响[J]. 硅酸盐通报, 2023, 42(3): 861-870.