钢渣粒度分布对钢渣水泥水化特性影响的灰度分析

兰州理工大学学报 ›› 2021, Vol. 47 ›› Issue (5): 138-143.

钢渣粒度分布对钢渣水泥水化特性影响的灰度分析

南雪丽^*1,2, 杨蓝蓝^1,2, 唐维斌^1,2, 韩博^1,2, 王超杰^1,2

1.兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 甘肃兰州 730050;
2.兰州理工大学材料科学与工程学院, 甘肃兰州 730050

收稿日期:2019-03-20 出版日期:2021-10-28 发布日期:2021-11-18
通讯作者: 南雪丽(1977-),女,甘肃定西人,副教授,硕士.Email:nanxueli@163.com
基金资助:
甘肃省住房和城乡建设厅科研项目(JK2017-15)

Gray correlation analysis of the influence of particle size distribution of steel slag on hydraulic activity of steel slag cement

NAN Xue-li^1,2, YANG Lan-lan^1,2, TANG Wei-bin^1,2, HAN Bo^1,2, WANG Chao-jie^1,2

1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou Univ. of Tech., Lanzhou 7300502, China;
2. College of Material Science and Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2019-03-20 Online:2021-10-28 Published:2021-11-18

摘要/Abstract

摘要： 利用机械激发的原理,从强度与Ca(OH)₂含量两个方面,研究不同球磨时间下钢渣粉的粒度特性以及比表面积对钢渣水泥胶砂水化性能的影响,同时采用灰色关联分析方法探讨钢渣颗粒粒径与钢渣水泥胶砂强度和水化程度的影响规律.结果表明:球磨时间增加,钢渣比表面积增大,活性随之增强;通过DTG热分析发现钢渣的比表面积的变化会影响水化产物Ca(OH)₂结晶和晶体生长速率;钢渣粉中10~20μm粒级对钢渣水泥强度促进作用最大,5~10 μm粒级对钢渣水泥28 d Ca(OH)₂含量促进作用最大,因此增加5~20 μm范围的钢渣颗粒含量,有利于提高钢渣活性.

关键词: 钢渣, 比表面积, 灰色关联分析, 强度, 水化

Abstract: Based on the principle of mechanical activation, the effects of particle size distribution and specific surface area of steel slag powderfor different grinding time on the hydration properties of steel slag cement mortar were studied from two aspects of strength and Ca(OH)₂ content. And the influence of particle size of steel slag on the strength and hydration performance of steel slag cement mortar was researched by the gray relational analysis method. The results show that the specific surface area of steel slag and its activity increase with the grinding time; DTG thermal analysis shows that the specific surface area of steel slag affects the crystallization and crystal growth rate of Ca(OH)₂; Slag powder particles with the sizes of 10~20 μm have the greatest effect on the strength of steel slag cementand those with the sizes of 5~10 μm play a catalytic role in the content of Ca(OH)₂ at the 28th day. Therefore, increasing the content of steel slag particles in the range of 5~20 μm is beneficial to the activity of steel slag.

Key words: steel slag, specific surface area, grey correlation analysis, strength, hydration

中图分类号:

TU528.04

南雪丽, 杨蓝蓝, 唐维斌, 韩博, 王超杰. 钢渣粒度分布对钢渣水泥水化特性影响的灰度分析[J]. 兰州理工大学学报, 2021, 47(5): 138-143.

NAN Xue-li, YANG Lan-lan, TANG Wei-bin, HAN Bo, WANG Chao-jie. Gray correlation analysis of the influence of particle size distribution of steel slag on hydraulic activity of steel slag cement[J]. Journal of Lanzhou University of Technology, 2021, 47(5): 138-143.

参考文献

[1] 董宝澍.固体废物的处理与利用 [M].北京:冶金工业出版社, 1999.
[2] MOTZ H,GEISELER J.Products of steel slags an opportunity to save natural resources [J].Waste Management, 2001,21(3):285-93.
[3] SANTAMARÍA A,ROJÍ E,SKAF M,et al.The use of steelmaking slags and fly ash in structural mortars [J].Construction & Building Materials,2016,106:364-373.
[4] SHI C J,QIAN J S.High performance cementing materials from industrial slags-a review [J].Resources Conservation & Recycling,2000,9(3):195-207.
[5] 向晓东,习嘉晨,李灿华.钢渣AC-10C型改性沥青混合料配合比及性能 [J].兰州理工大学学报,2016,42(6):148-152.
[6] KOUROUNIS S,TSIVILIS S,TSAKIRIDIS P E,et al.Properties and hydration of blended cements with steel making slag [J].Cement & Concrete Research,2007,37(6):815-822.
[7] ADOLFSSON D,ROBINSON R,ENGSTRÖM F,et al.Influence of mineralogy on the hydraulic properties of ladle slag [J].Cement & Concrete Research,2011,41(8):865-871.
[8] 王强,阎培渝.钢渣水化产物的特性 [J].硅酸盐学报,2010,38(9):1731-1734.
[9] SHI C,HU S.Cementitious properties of ladle slag fines under autoclave curing conditions [J].Cement & Concrete Research,2003,33(11):1851-1856.
[10] 冯春花,李东旭,苗琛,等.助磨剂对钢渣细度和活性的影响 [J].硅酸盐学报,2010(7):1160-1166.
[11] 杨钱荣,杨全兵.含钢渣复合掺合料对混凝土耐久性的影响 [J].同济大学学报(自然科学版),2010,(8):1200-1204.
[12] 南雪丽,王佳亮,王超杰,等.不同化学激发剂对钢渣水硬活性的影响 [J].兰州理工大学学报,2018,44(1):138-142.
[13] 朱明,胡曙光,丁庆军.钢渣用作水泥基材料的问题研讨[J].武汉理工大学学报.2005,27(6):48-51.
[14] 涂昆,刘家祥,邓侃.钢渣粉和钢渣水泥的活性及水化机理研究[J].北京化工大学学报(自然科学版),2015,42(1):62-68.
[15] 王强,黎梦圆,石梦晓.水泥-钢渣-矿渣复合胶凝材料的水化特性[J].硅酸盐学报.2014,42(5):629-634.
[16] 胡曙光,韦江雄.水玻璃对钢渣水泥激发机理的研究 [J].水泥工程,2001(5):4-6.
[17] 王雪莉,王剑锋,杨松格等.氨基三元醇对钢渣–矿渣复合胶凝体系水化的影响 [J].硅酸盐学报,2017,45(2):206-211.
[18] HE D L,LIAO H Q,GUO Z C,et al.Influence of steel slag powder with different specific surface area on the properties of foam concrete [J].Advanced Materials Research,2012,575:98-99.
[19] 易龙生,温建,汪洲,等.钢渣粒度分布对钢渣水泥胶凝性能的影响 [J].金属矿山,2013(6):165-167.
[20] 杜君,郑振叶,刘家祥.钢渣粒径分布对钢渣水泥复合胶凝材料水化性能的影响 [J].矿产综合利用,2015(3):62-68.
[21] 魏瑞丽,李辉,张婕.钢渣活性激发的机理及研究进展 [J].材料导报,2014,28(11):105-108.
[22] 李响,阎培渝,阿茹罕.基于Ca(OH)2含量的复合胶凝材料中水泥水化程度的评定方法 [J].硅酸盐学报,2009,37(10):1597-1601.
[23] 邓聚龙.灰理论基础 [M].湖北:华中科技大学出版社,2002.
[24] 张作顺,徐利华,赛音巴特尔,等.钢渣矿渣掺合料对水泥性能的影响 [J].金属矿山,2010,(7):173-176.
[25] WANG Q,YANG J W,YAN P Y.Influence of initial alkalinity on the hydration of steel slag [J].Science China Technological Sciences,2012(12):3378-3387.
[26] 刘思峰.灰色系统理论及其应用 [M].北京:科学出版社,2010.