混杂纤维对脱硫石膏基复合胶凝材料性能影响

doi:10.19964/j.issn.1006-4990.2022-0017

摘要/Abstract

摘要：

掺加聚乙烯醇（PVA）纤维、玄武岩纤维（BF）及混杂纤维（PVA纤维与BF）对脱硫石膏基复合胶凝材料性能进行改性,研究纤维复合材料的力学性能、耐水性能及耐干湿性能；应用电镜扫描技术对复合材料的微观形貌进行观察,探讨纤维对脱硫石膏基复合胶凝材料的影响机制。结果表明:PVA纤维掺量为1.5%时复合材料力学性能较好,试样的绝干抗折强度和绝干抗压强度较空白组分别提升了92.55%和32.62%；混杂纤维掺量为0.9%时耐水性能较好,试样的抗折软化系数较空白组提升了46.60%、吸水率低至13.87%；混杂纤维掺量为0.6%时耐干湿性能较优,干湿强度系数较空白组提升了50.74%。

关键词: 聚乙烯醇（PVA）纤维, 玄武岩纤维（BF）, 混杂纤维复合材料, 脱硫石膏, 力学性能

Abstract:

Polyvinyl alcohol（PVA） fiber,basalt fiber（BF） and hybrid fiber（PVA fiber and BF） were added to modify the properties of desulfurized gypsum base composite cementing materials,and the mechanical properties,water resistance and dry-wet resistance of fiber composites were studied.Scanning electron microscopy（SEM） was used to observe the microstructure of the composite materials,and the influence mechanism of fiber on the desulfurized gypsum base composite cementified materials was discussed.The results showed that the mechanical properties of the composites were better when the content of PVA fiber was 1.5%,and the absolute dry flexural strength and absolute dry compressive strength of the sample were increased by 92.55% and 32.62% compared with that of the blank group,respectively.When the mixed fiber content was 0.9%,the water resistance of the sample was better.Compared with the blank group,the bending and softening coefficient of the sample increased by 46.60%,and the water absorption rate was lower than 13.87%.When the mixed fiber content was 0.6%,the dry-wet resistance was better,and the dry-wet strength coefficient increased by 50.74% compared with the blank group.

Key words: polyvinyl alcohol（PVA） fiber, basalt fiber（BF）, hybrid fiber composites, desulfurized gypsum, mechanical properties

中图分类号:

TB33

吕方涛,周银笙,孔德文,陈思翰,安红芳,王玲玲. 混杂纤维对脱硫石膏基复合胶凝材料性能影响[J]. 无机盐工业, 2022, 54(10): 127-132.

LÜ Fangtao,ZHOU Yinsheng,KONG Dewen,CHEN Sihan,AN Hongfang,WANG Lingling. Effect of hybrid fiber on properties of desulfurized gypsum based composite cementitious material[J]. Inorganic Chemicals Industry, 2022, 54(10): 127-132.

图/表 11

表1

图1

表2

图2

图3

图4

图5

图6

图7

图8

图9

参考文献 17

[1]	LIU Sen, LIU Wei, JIAO Fen, et al.Production and resource utilization of flue gas desulfurized gypsum in China-A review[J].Environmental Pollution, 2021,288.Doi:10.1016/j.envpol.2021.117799.
[2]	周建伟, 程宝军, 余保英, 等. 脱硫石膏的热处理对超硫酸盐水泥性能的影响[J].无机盐工业, 2020, 52(11): 79-85.
	ZHOU Jianwei, CHENG Baojun, YU Baoying, et al.Effect of heat-treated desulfurized gypsum on properties of super sulfated ceme-nt[J].Inorganic Chemicals Industry, 2020, 52(11): 79-85.
[3]	刘林程, 左海滨, 许志强.工业石膏的资源化利用途径与展望[J].无机盐工业, 2021, 53(10): 1-9.
	LIU Lincheng, ZUO Haibin, XU Zhiqiang.Resource utilization approach of industrial gypsum and its prospect[J].Inorganic Chemicals Industry, 2021, 53(10): 1-9.
[4]	谢浪, 周银笙, 罗双, 等. 玄武岩纤维改性脱硫建筑石膏研究[J].非金属矿, 2020, 43(6): 49-51, 55.
	XIE Lang, ZHOU Yinsheng, LUO Shuang, et al.Study on basalt fiber modified desulfurized building gypsum[J].Non-Metallic Min-es, 2020, 43(6): 49-51, 55.
[5]	王裕银, 李国忠, 柏玉婷.玉米秸秆纤维/脱硫石膏复合材料的性能[J].复合材料学报, 2010, 27(6): 94-99.
	WANG Yuyin, LI Guozhong, BAI Yuting.Performance of corn straw fibre/desulfurization gypsum composite materials[J].Acta Materiae Compositae Sinica, 2010, 27(6): 94-99.
[6]	李国忠, 高子栋, 马庆宇.聚丙烯纤维和有机乳液复合改性脱硫建筑石膏[J].建筑材料学报, 2010, 13(4): 430-434.
	LI Guozhong, GAO Zidong, MA Qingyu.Complex modification of calcined gypsum from FGD with polypropylene fiber and organic emulsion[J].Journal of Building Materials, 2010, 13(4): 430-434.
[7]	李元琦, 李刚, 赵红艳, 等. EPS颗粒与玄武岩纤维对脱硫石膏性能的影响[J].非金属矿, 2020, 43(4): 45-48.
	LI Yuanqi, LI Gang, ZHAO Hongyan, et al.Effect of EPS grain and basalt fiber on properties of desulfurization gypsum[J].Non-Metallic Mines, 2020, 43(4): 45-48.
[8]	曹立久, 靳焘, 邓素琴, 等. 密胺树脂强化“脱硫石膏-玻纤”的成型过程与机制[J].建筑材料学报, 2022, 25(1): 74-80.
	CAO Lijiu, JIN Tao, DENG Suqin, et al.Molding process and mechanism of “desulfurized gypsum-glass fiber” reinforced with melamine resin[J].Journal of Building Materials, 2022, 25(1): 74-80.
[9]	DURGUN M Y.Effect of wetting-drying cycles on gypsum plasters containing ground basaltic pumice and polypropylene fibers[J].Journal of Building Engineering, 2020,32.Doi:10.1016/j.jobe.2020.101801.
[10]	WANG Zhenbo, HAN Shuo, SUN Peng, et al.Mechanical properties of polyvinyl alcohol-basalt hybrid fiber engineered cementitious composites with impact of elevated temperatures[J].Journal of Central South University, 2021, 28(5): 1459-1475.
[11]	周银笙, 谢浪, 赵银霜, 等. 硫铝酸盐水泥改性脱硫石膏复合材料研究[J].非金属矿, 2021, 44(3): 17-20.
	ZHOU Yinsheng, XIE Lang, ZHAO Yinshuang, et al.Study on composite material of sulphoaluminate cement modified desulfurized gypsum[J].Non-Metallic Mines, 2021, 44(3): 17-20.
[12]	鞠彦忠, 徐力斌, 王德弘, 等. 混杂纤维RPC力学性能试验研究[J].应用基础与工程科学学报, 2019, 27(6): 1381-1389.
	JU Yanzhong, XU Libin, WANG Dehong, et al.Study on mechanical properties of hybrid fiber RPC[J].Journal of Basic Science and Engineering, 2019, 27(6): 1381-1389.
[13]	李黎, 曹明莉, 冯嘉琪.纤维增强水泥基复合材料的纤维混杂效应研究进展[J].应用基础与工程科学学报, 2018, 26(4): 843-853.
	LI Li, CAO Mingli, FENG Jiaqi.Research progress on fiber hybrid effect in fiber reinforced cementitious composite[J].Journal of Basic Science and Engineering, 2018, 26(4): 843-853.
[14]	ÖZKAN Ş, DEMIR F.The hybrid effects of PVA fiber and basalt fiber on mechanical performance of cost effective hybrid cementitious composites[J].Construction and Building Materials, 2020,263.Doi:10.1016/j.conbuildmat.2020.120564 . doi: 10.1016/j.conbuildmat.2020.120564
[15]	JIA Ruiquan, WANG Qiang, FENG Peng.A comprehensive overview of fibre-reinforced gypsum-based composites（FRGCs） in the construction field[J].Composites Part B:Engineering, 2021,205.Doi:10.1016/j.compositesb.2020.108540 . doi: 10.1016/j.compositesb.2020.108540
[16]	XIE Lang, ZHOU Yinsheng, XIAO Shihao, et al.Research on basalt fiber reinforced phosphogypsum-based composites based on single factor test and RSM test[J].Construction and Building Materials, 2022,316.Doi:10.1016/j.conbuildmat.2021.126084 . doi: 10.1016/j.conbuildmat.2021.126084
[17]	WANG Yan, ZHANG Shaohui, NIU Ditao, et al.Quantitative evaluation of the characteristics of air voids and their relationship with the permeability and salt freeze-thaw resistance of hybrid steel-polypropylene fiber-reinforced concrete composites[J].Cement and Concrete Composites, 2022,125.Doi:10.1016/j.cemconcomp.2021.104292 . doi: 10.1016/j.cemconcomp.2021.104292

材料类型	w（SiO₂）	w（Al₂O₃）	w（Fe₂O₃）	w（CaO）	w（SO₃）	w（P₂O₅）	w（K₂O）	w（SrO）	w（F）	w（Cl）
原状脱硫石膏	3.310	1.324	0.538	40.21	53.416	0.030	0.241	0.069	0.862	—
脱硫建筑石膏	2.859	1.108	0.470	38.506	54.851	0.027	0.232	0.088	0.744	—
生石灰	0.599	0.140	0.111	98.292	0.238	0.008	0.581	0.014	—	0.014
矿粉	34.985	15.703	0.842	35.179	2.609	0.025	7.582	0.042	—	0.047
硫铝酸盐水泥	6.472	14.924	1.804	57.096	18.385	0.046	1.001	0.036	—	0.236

首页

全国无机盐信息中心

中国化工学会

无机酸碱盐专业委员会