MECHANICAL PROPERTIES, DURABILITY AND TEMPERATURE RISE CHARACTERISTICS OF HIGH PERFORMANCE CONCRETE WITH IRON AND STEEL SLAG POWDER
-
摘要: 我国钢渣年产量过亿吨,累计堆存量巨大,利用率低,已对生态环境构成严重危害。基于此,开展了钢铁渣粉在高性能混凝土中的应用研究,研究表明:钢铁渣粉掺量超过胶材总量30%时,混凝土抗压强度呈显著降低趋势,胶材总量中钢铁渣粉掺量越大影响越显著;随着钢铁渣粉掺量和胶材总量的增加,混凝土的抗渗性能得到显著提高;钢铁渣粉掺量占胶材总量的40%~50%时,混凝土的抗冻性能也相对较好。随着钢铁渣粉掺量增加,钢铁渣粉混凝土水化热显著降低。大体积混凝土试件温升试验表明,钢铁渣粉混凝土试件与双掺矿渣粉+粉煤灰混凝土试件相比,可显著降低混凝土试件中心的温升,有效抑制大体积混凝土试件的温升开裂问题。该成果可为钢铁渣粉在混凝土中的应用提供参考数据。Abstract: The annual output of steel slag in China exceeds 100 million tons, with huge accumulated storage and low utilization rate, which has caused serious harm to the ecological environment. Based on this, this paper carried out the application research of steel slag powder in high performance concrete. The results showed that when the content of steel slag powder exceeded 30% of the total amount of binder, the compressive strength of concrete presented a significant reduction trend. The greater the content of steel slag powder in the total amount of glue material, the more significant its impact; with the increase of steel slag powder and glue material, the impermeability of concrete was significantly improved. When the amount of steel slag powder accounted for 40%~50% of the total amount of glue material, the frost resistance of concrete was relatively better. With the increase of steel slag powder content, the hydration heat of steel slag powder concrete decreased significantly. The temperature rise experiment of mass concrete specimen showed that the steel slag powder concrete specimen could significantly reduce the temperature rise in the center of the concrete specimen, and effectively inhibit the temperature rise cracking of mass concrete specimen, compared with the slag powder and fly ash mixed concrete specimen. The results provided a theoretical basis for the application of steel slag powder in concrete.
-
Key words:
- iron & steel slag powder /
- concrete /
- performance /
- temperature rise
-
[1] 殳黎平,吴洪义.宁钢钢渣资源化利用的创新与实践[J].冶金能源,2019,38(3):46-48. [2] 张浩,刘秀玉,刘影.XRD与SEM的钢渣尾渣物理激发机理研究[J].光谱学与光谱分析,2019,39(3):281-285. [3] 张妍,常钧,何萍.钢渣中游离氧化钙和氧化镁碳酸化反应[J].大连理工大学学报,2018,58(6):634-640. [4] 吴辉,倪文,崔孝炜,等.利用热闷钢渣制备低收缩铁路轨枕混凝土[J].材料热处理学报,2014,35(4):7-12. [5] MOTZ H,GEISELER J.Products of steel slags an opportunity to save natural resources[J].Waste Management,2001,21(3):285-293. [6] HERRMANN I,ANDREAS L,DIENER S,et al.Steel slag used in landfill cover liners:laboratory and field tests[J].Waste Management & Research,2010,28(12):1114-1121. [7] 张作顺,徐利华,余广炜,等.钢渣在水泥和混凝土中资源化利用的研究进展[J].材料导报(纳米与新材料专辑),2010,24(2):432-435. [8] 陶海征.钢渣的综合利用研究[D].武汉:武汉理工大学,2001. [9] 罗莉萍.钢渣的处理工艺和利用现状[J].中国金属通报,2020(1):220-221. [10] 刁彦平.地材高强混凝土的优化配比及工程结构中设计对比研究[D].郑州:郑州大学,2006. [11] 李永鑫.含钢渣粉掺合料的水泥混凝土组成、结构与性能的研究[D].北京:中国建筑材料科学研究院,2003. [12] HISHAM Q,FAISAL S,IBRAHIM A.Use of low CaO unprocessed steel slag in concrete as fine aggregate[J].Construction and Building Materials,2009,23:1118-1125. [13] 孙家瑛.磨细钢渣对混凝土力学性能及安定性影响研究[J].粉煤灰,2003,15(5):7-9. [14] TRAN M V,NGUYEN C V,NAWA T,et al.Properties of high strength concrete using steel slag coarse aggregate[J].ASEAN Engineering Journal,2015,4(2):22-32. [15] 朱航.钢渣矿粉的制备及其在水泥混凝土中的应用研究[D].武汉:武汉理工大学,2006. [16] 夏春,孙树杉,朱桂林,等.钢渣稳定性机理及测定方法初探[J].冶金环境保护,2009 (6):49-51. [17] 薛富民,胡玉芬,徐清忠,等.钢渣-矿渣复掺粉做混凝土掺合料的试验[J].21世纪建筑材料居业,2011(10):84-87. [18] 朴星君,朱桂林,孙树杉.钢铁渣粉对混凝土中钢筋的保护作用[J].环境工程,2011,29(3):91-94,102. [19] 闾文,陈闽蜀.钢铁渣粉在混凝土中的应用研究[J].环境工程,2015,33(3):102-105. [20] 黄剑松.影响混凝土抗压强度因素分析及控制[J].建筑工程技术与设计,2017(1):1106,1108. [21] 邢琳琳.钢渣稳定性与钢渣粗骨料混凝土的试验研究[D].西安:西安建筑科技大学,2012. [22] 刘录录.胶凝砂砾石材料物理力学性能研究及有限元分析[D].乌鲁木齐:新疆农业大学,2013. [23] 韩均.钢渣混凝土力学性能及耐久性试验研究[J].公路工程,2020,45(6):227-230. [24] 李天艳,杨晓虹,张亚挺.混凝土电通量的影响因素试验研究[J].江苏建筑,2006(增刊1):23-24,42. [25] 曹秀丽,曹志翔,喻骁.冻融循环对混凝土质量损失及相对动弹模量影响的试验研究[J].铁道建筑,2013(3):125-127. [26] 黄志斌.钢渣粉与矿渣粉在混凝土中的应用[J].福建建筑,2009,138(12):47-48. [27] 葛灿灿.外加组分对水泥水化热影响的试验研究[D].合肥:合肥工业大学,2015.
点击查看大图
计量
- 文章访问数: 277
- HTML全文浏览量: 27
- PDF下载量: 17
- 被引次数: 0