钢渣细集料对水泥稳定砂岩基层路用性能影响研究

摘要/Abstract

摘要： 钢渣应用于路面基层时既能提高钢渣的综合利用,又有助于减少天然砂石材料的消耗。为了分析钢渣细集料对水泥稳定砂岩基层(CSSB)路用性能的影响,本文比较分析了不同钢渣细集料置换石灰岩细集料条件下CSSB的抗压强度、劈裂强度、收缩性能和水稳定性,并运用SEM结合能谱揭示了钢渣细集料对CSSB微观结构的影响。结果表明:钢渣细集料能够有效提高CSSB的后期强度,其中100%(质量分数)钢渣细集料置换率下CSSB的60 d强度相较于未掺钢渣试样提高了18.7%,但对CSSB的早期强度存在一定的负面影响;钢渣细集料能够改善CSSB的收缩性能,且掺量越高,改善性能越明显;尽管钢渣细集料能够提高CSSB的长期水稳定性,但会降低其短期的水稳定性。与未掺钢渣试样相比,28 d龄期时,100%钢渣细集料置换率下CSSB界面过渡区的m(Ca)/m(Si)质量比降低了62.95%,C-S-H凝胶明显增多,结构更密实。研究表明,通过控制合理的掺量,钢渣细集料可以作为传统砂石细集料的替代品,在路面基层中具有良好的应用前景。

关键词: 道路工程, 钢渣细集料, 砂岩, 路面基层, 收缩性能, 水稳定性

Abstract: The application of steel slag to pavement subgrade can improve the comprehensive utilization of steel slag as well as help to reduce the consumption of natural sand and gravel materials. In order to analyse the effect of steel slag fine aggregate on road performance of cement stabilised sandstone base layer (CSSB), the compressive strength, splitting strength, shrinkage properties and water stability of CSSB were comparatively analysed under different steel slag fine aggregate replacement limestone fine aggregate, and SEM combined with energy spectroscopy were used to reveal the effect of steel slag fine aggregate on microstructure of CSSB. The results show that steel slag fine aggregate can effectively improve late strength of CSSB, in which the 60 d strength of CSSB with 100% steel slag fine aggregate replacement rate increases by 18.7% compared with that of undoped steel slag specimens, however, there is a certain negative effect on the early strength of CSSB. Steel slag fine aggregate can improve shrinkage properties of CSSB, and the higher the doping amount, the more obvious the improvement of the performance. Although steel slag fine aggregate can improve the long-term water stability of CSSB, it will reduce its short-term water stability to some extent. Compared with the undoped steel slag samples, m(Ca)/m(Si) ratio in the interface transition zone of CSSB with 100% steel slag fine aggregate replacement rate at the age of 28 d reduces by 62.95%, and the C-S-H gel is obviously increases, with a denser structure. The study shows that by controlling the reasonable content, steel slag fine aggregate can be used as a substitute aggregate for traditional sand and gravel fine aggregate, and has a good application prospect in the pavement base layer.

Key words: road engineering, steel slag, sandstone, pavement base layer, shrinkage property, water stability

中图分类号:

U414

李超, 姜运良, 李绍勇, 颜峰, 汤长西, 李晓龙. 钢渣细集料对水泥稳定砂岩基层路用性能影响研究[J]. 硅酸盐通报, 2024, 43(3): 1172-1180.

LI Chao, JIANG Yunliang, LI Shaoyong, YAN Feng, TANG Changxi, LI Xiaolong. Effect of Steel Slag Fine Aggregate on Road Performance of Cement Stabilised Sandstone Base Layer[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(3): 1172-1180.

参考文献

[1] 石建红. 冶金废固钢渣综合利用研究[J]. 节能与环保, 2023(4): 53-55.
SHI J H. Study on comprehensive utilization of metallurgical solid steel slag[J]. Energy Conservation & Environmental Protection, 2023(4): 53-55 (in Chinese).
[2] 黄优, 刘朝晖, 柳力, 等. 钢渣-水泥稳定碎石性能及环境影响试验[J]. 长安大学学报(自然科学版), 2021, 41(5): 43-53.
HUANG Y, LIU Z H, LIU L, et al. Experimental study on properties and environmental impacts of steel slag cement stabilized aggregates[J]. Journal of Chang'an University (Natural Science Edition), 2021, 41(5): 43-53 (in Chinese).
[3] 万田宝. 水泥稳定钢渣碎石基层力学特性及微观分析[J]. 中外公路, 2023, 43(3): 248-252.
WAN T B. Mechanical properties and micro analysis of cement stabilized steel slag macadam base[J]. Journal of China & Foreign Highway, 2023, 43(3): 248-252 (in Chinese).
[4] 高振鑫, 申爱琴, 翟超伟, 等. 钢渣沥青混合料体积参数测定与水稳定性影响机理[J]. 交通运输工程学报, 2018, 18(2): 1-10.
GAO Z X, SHEN A Q, ZHAI C W, et al. Determination of volumetric parameters and impacting mechanism of water stability for steel slag asphalt mixture[J]. Journal of Traffic and Transportation Engineering, 2018, 18(2): 1-10 (in Chinese).
[5] 冯群英. 钢渣在公路路基路面工程中的应用研究[D]. 重庆: 重庆交通大学, 2013.
FENG Q Y. Study on application of steel slag in highway subgrade and pavement engineering[D].Chongqing: Chongqing Jiaotong University, 2013 (in Chinese).
[6] 黄伟, 邱鹏, 唐刚, 等. 钢渣混合土基层材料制备及性能研究[J]. 硅酸盐通报, 2019, 38(10): 3237-3242+3265.
HUANG W, QIU P, TANG G, et al. Study on preparation and performance of roadbase material of steel slag mixed soil[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(10): 3237-3242+3265 (in Chinese).
[7] 肖杰, 龙晨杰, 何建刚, 等. 大掺量激活钢渣微粉-水泥稳定碎石性能及微观特性[J]. 中国公路学报, 2021, 34(10): 204-215.
XIAO J, LONG C J, HE J G, et al. Performance and micro characteristics of cement stabilized macadam with a large amount of activated steel slag powder[J]. China Journal of Highway and Transport, 2021, 34(10): 204-215 (in Chinese).
[8] 马士杰, 周子栋, 张正超, 等. 水泥稳定钢渣碎石混合料环境影响和经济效益分析[J]. 公路, 2023, 68(1): 368-377.
MA S J, ZHOU Z D, ZHANG Z C, et al. Environmental impact and economic benefit analysis of cement stabilized steel slag macadam mixture[J]. Highway, 2023, 68(1): 368-377 (in Chinese).
[9] 辛德军, 刘志强, 冀欣, 等. 干旱寒冷地区水泥稳定钢渣碎石基层特性研究[J]. 西安科技大学学报, 2022, 42(1): 116-124.
XIN D J, LIU Z Q, JI X, et al. Study on the characteristics of cement-stabilized steel slag and gravel base in dry and cold region[J]. Journal of Xi'an University of Science and Technology, 2022, 42(1): 116-124 (in Chinese).
[10] 中华人民共和国交通部. 公路工程集料试验规程: JTG E42—2005[S]. 北京: 人民交通出版社, 2005.
Ministry of Transportation and Communications of the People's Republic of China. Aggregate testing procedure for highway works: JTG E42—2005[S]. Beijing: China Communications Press, 2005 (in Chinese).
[11] 中华人民共和国交通运输部. 公路路面基层施工技术细则: JTG/T F20—2015[S]. 北京: 人民交通出版社, 2015.
Ministry of Transportation and Communications of the People's Republic of China. Technical details of road pavement subgrade construction: JTG/T F20—2015[S]. Beijing: China Communications Press, 2015 (in Chinese).
[12] 中华人民共和国交通运输部. 公路工程无机结合料稳定材料试验规程: JTG E51—2009[S]. 北京: 人民交通出版社, 2009.
Ministry of Transportation and Communications of the People's Republic of China. Test specification for in organic binding material stabilizing material for highway engineering: JTG E51—2009[S]. Beijing: China Communications Press, 2009 (in Chinese).
[13] PATERIYA A S, ROBERT D J, DHARAVATH K, et al. Stabilization of marble wastes using cement and nano materials for subgrade applications[J]. Construction and Building Materials, 2022, 326: 126865.
[14] 邹桂莲, 王华新, 方帅. 水泥稳定再生碎石路用性能研究[J]. 公路工程, 2018, 43(5): 28-32.
ZOU G L, WANG H X, FANG S. Study on pavement performance of cement stabilized recycled aggregate[J]. Highway Engineering, 2018, 43(5): 28-32 (in Chinese).
[15] 田小革, 于水, 李光耀, 等. 不同措施对水泥稳定碎石混合料性能的影响[J]. 硅酸盐通报, 2022, 41(7): 2235-2243.
TIAN X G, YU S, LI G Y, et al. Effects of different measures on performance of cement stabilized macadam mixture[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(7): 2235-2243 (in Chinese).
[16] 蔡德明. 中性激活钢渣微粉性能及其在水泥稳定碎石中的应用研究[D]. 长沙: 长沙理工大学, 2020.
CAI D M. Study on properties of neutral activated steel slag micropowder and its application in cement stabilized macadam[D].Changsha: Changsha University of Science & Technology, 2020 (in Chinese).
[17] GUAN J F, LU M, YAO X H, et al. An experimental study of the road performance of cement stabilized coal gangue[J]. Crystals, 2021, 11(8): 993.
[18] HOU Y Q, JI X P, LIU L Q. Study on mechanical and influencing factors of cement stabilised recycled a ggregate. Journal of Highway and Transportation Research and Development. 2016, 33: 56-61.
[19] 雷蕾, 姜慧, 顾万, 等. 外掺剂改良再生水泥稳定碎石基层材料试验研究[J]. 公路, 2022, 67(2): 31-37.
LEI L, JIANG H, GU W, et al. Research on recycled cement stabilized crushed stone base material improved with admixtures[J]. Highway, 2022, 67(2): 31-37 (in Chinese).
[20] 黄桂萍, 韩祖丽, 谭毅. 掺钢渣细集料水泥稳定碎石混合料路用性能试验研究[J]. 西部交通科技, 2022(10): 7-12.
HUANG G P, HAN Z L, TAN Y. Experimental study on road performance of cement stabilized macadam mixture mixed with steel slag fine aggregate[J]. Western China Communications Science & Technology, 2022(10): 7-12 (in Chinese).
[21] 陈勇鸿, 孙艳华, 高伏良, 等. 水泥稳定钢渣-碎石道路基层材料干缩性质试验研究[J]. 公路工程, 2012, 37(5): 202-205.
CHEN Y H, SUN Y H, GAO F L, et al. Experimental study on dehydration contraction properties of cement stabilized steel slag-crushed stone road base materials[J]. Highway Engineering, 2012, 37(5): 202-205 (in Chinese).
[22] 何亮, 詹程阳, 吕松涛, 等. 钢渣沥青混合料应用现状[J]. 交通运输工程学报, 2020, 20(2): 15-33.
HE L, ZHAN C Y, LYU S T, et al. Application status of steel slag asphalt mixture[J]. Journal of Traffic and Transportation Engineering, 2020, 20(2): 15-33 (in Chinese).
[23] 马璐璐, 张翛, 刘芳, 等. 赤泥-粉煤灰稳定煤矸石基层强度特性及机理[J]. 建筑材料学报, 2023, 26(7): 762-770.
MA L L, ZHANG X, LIU F, et al. Strength characteristics and mechanism of red mud-fly ash stabilized coal gangue base[J]. Journal of Building Materials, 2023, 26(7): 762-770 (in Chinese).
[24] LI Q F, HU J. Mechanical and durability properties of cement-stabilized recycled concrete aggregate[J]. Sustainability, 2020, 12(18): 7380.
[25] 王清洲, 梁瑛硕, 赵云飞, 等. 水泥稳定钢渣碎石基层材料的路用性能研究[J]. 水资源与水工程学报, 2023, 34(1): 143-151.
WANG Q Z, LIANG Y S, ZHAO Y F, et al. Road performance of subgrade consisted of cement stabilized steel slag and crushed stone[J]. Journal of Water Resources and Water Engineering, 2023, 34(1): 143-151 (in Chinese).
[26] 张平, 古龙龙, 李凯, 等. 再生微粉混凝土抗冻性及抗硫酸盐侵蚀性能研究[J]. 混凝土与水泥制品, 2020(3): 27-30.
ZHANG P, GU L L, LI K, et al. Study on frost resistance and sulfate resistance of concrete with recycled fine powder[J]. China Concrete and Cement Products, 2020(3): 27-30 (in Chinese).