机制砂混凝土耐磨性的主要影响因素分析及多因素计算模型

摘要/Abstract

摘要： 本文研究了砂类型、砂率、石粉含量和抗压强度对机制砂混凝土耐磨性的影响,建立了磨损量的多因素计算模型。结果表明:由于含石粉及具有更高的粗糙度和坚固性,石灰岩与辉绿岩机制砂制备的C30、C40混凝土耐磨性比河砂混凝土提高20%以上;在0.40~0.44范围内选取较低的砂率可获得较优的耐磨性;利用石粉含量为5%~11%(质量分数)的机制砂制备混凝土,石粉含量为9%时可获得最佳的混凝土耐磨性,微观分析表明此时混凝土密实度最佳;通过灰色系统理论确定了耐磨性影响因素的影响程度排序为:砂率R₃>压碎值R₂>粗糙度R₁>抗压强度R₅>石粉含量R₄>0.6;对比验证表明提出的混凝土磨损量多因素计算模型具有较高的预测精度和良好的适用性。

关键词: 机制砂, 混凝土, 耐磨性, 灰色系统, 多因素模型

Abstract: The influences of sand type, sand rate, stone powder content and compressive strength on the abrasion resistance of manufactured sand concrete were studied and a multi-factor calculation model of abrasion loss was established. The results show that the abrasion resistance of C30 and C40 concrete prepared from limestone manufactured sand and diabase manufactured sand increase by more than 20% compared to that of river sand because manufactured sand has stone powder, higher roughness and soundness. Better abrasion resistance of concrete obtains by selecting lower sand rate in the range of 0.40 to 0.44. The concrete is prepared by using the manufactured sand with 5% to 11% (mass fraction) stone powder content, and the abrasion resistance of concrete shows the best when the stone powder content is 9%, because the compactness of concrete achieves the best at this time through microscopic analysis. The grey system theory is utilized to determine the influence degree of the factors affecting the abrasion resistance, and the influence degree is ranked as follows: sand rate R₃> crushing value R₂> roughness R₁> compressive strength R₅> stone powder content R₄>0.6. The comparison and verification indicate that the proposed multi-factor calculation model of the abrasion loss of concrete has higher prediction accuracy and more excellent applicability.

Key words: manufactured sand, concrete, abrasion resistance, grey system, multi-factor model

中图分类号:

TU528.07

谢吉程, 张云, 杜越明, 陈正, 罗婷倚, 唐亚森. 机制砂混凝土耐磨性的主要影响因素分析及多因素计算模型[J]. 硅酸盐通报, 2020, 39(12): 3812-3822.

XIE Jicheng, ZHANG Yun, DU Yueming, CHEN Zheng, LUO Tingyi, TANG Yasen. Analysis of Major Influence Factors and Multi-Factor Calculation Model of Abrasion Resistance of Manufactured Sand Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2020, 39(12): 3812-3822.

参考文献

[1] Atis C D, Karahan O, Ari K, et al. Relation between strength properties (flexural and compressive) and abrasion resistance of fiber (steel and polypropylene)-reinforced fly ash concrete[J]. Journal of Materials in Civil Engineering, 2009, 21(8): 402-408.
[2] Çavdar A, Yetgin Ş. Investigation of abrasion resistance of cement mortar with different pozzolanic compositions and subjected to sulfated medium[J]. Construction and Building Materials, 2010, 24: 461-470.
[3] Singh G, Siddique R. Abrasion resistance and strength properties of concrete containing waste foundry sand (WFS)[J]. Construction and Building Materials, 2012, 28: 421-426.
[4] Siddique R, Kapoor K, Kadri E H, et al. Effect of polyester fibres on the compressive strength and abrasion resistance of HVFA concrete[J]. Construction and Building Materials, 2012, 29: 270-278.
[5] Nili M, Ehsani A. Investigating the effect of the cement paste and transition zone on strength development of concrete containing nanosilica and silica fume[J]. Materials and Design, 2015, 75: 174-183.
[6] Siddique R, Khatib J M. Abrasion resistance and mechanical properties of high-volume fly ash concrete[J]. Materials and Structures, 2010, 43(5): 709-718.
[7] Rao S K, Sravana P, Rao T C. Investigating the effect of M-sand on abrasion resistance of roller compacted concrete containing GGBS[J]. Construction and Building Materials, 2016, 122: 191-201.
[8] Grdic Z J, Curcic G A T, Ristic N S, et al. Abrasion resistance of concrete micro-reinforced with polypropylene fibers[J]. Construction and Building Materials, 2012, 27(1): 305-312.
[9] Wang L, Zhou S H, Shi Y, et al. Effect of silica fume and PVA fiber on the abrasion resistance and volume stability of concrete[J]. Composites Part B: Engineering, 2017, 130: 28-37.
[10] Gesolu M, Güeneyisi E, Khoshnaw G, et al. Abrasion and freezing-thawing resistance of pervious concretes containing waste rubbers[J]. Construction and Building Materials, 2014, 73: 19-24.
[11] KłIłçA, AtişC D, Teymen A, et al. The influence of aggregate type on the strength and abrasion resistance of high strength concrete[J]. Cement and Concrete Composites, 2008, 30(4): 290-296.
[12] Nazari A, Riahi S. Compressive strength and abrasion resistance of concrete containing SiO₂ and Cr₂O₃ nanoparticles in different curing media[J]. Magazine of Concrete Research, 2012, 64(2): 177-188.
[13] Sadegzadeh M, Page C L, Kettle R J. Surface microstructure and abrasion resistance of concrete[J]. Cement and Concrete Research, 1987, 17(4): 581-590.
[14] Shen W G, Yang Z G, Cao L H. et al. Characterization of manufactured sand: particle shape, surface texture and behavior in concrete[J]. Construction and Building Materials, 2016, 114: 595-601.
[15] Shen W G, Liu Y, Wang Z W, et al. Influence of manufactured sand’s characteristics on its concrete performance[J]. Construction and Building Materials, 2018, 172: 574-583.
[16] Li B X, Ke G J, Zhou M K. Influence of manufactured sand characteristics on strength and abrasion resistance of pavement cement concrete[J]. Construction and Building Materials, 2011, 25(1): 3849-3853.
[17] 王稷良,田波,柯国炬,等.机制砂及石粉含量对路面水泥混凝土耐磨性的影响研究[J].公路,2011,56(7):207-211.
[18] 王雨利,蔡基伟,杨雷,等.石灰石粉对砂浆耐磨性能的影响及作用机理[J].建筑材料学报,2014,17(2):270-273.
[19] Sato T, Diallo F. Seeding effect of nano-CaCO₃ on the hydration of tricalcium silicate[J]. Transportation Research Record: Journal of the Transportation Research Board, 2010, 2141(1): 61-67.
[20] Ramezanianpour A A, Ghiasvand E, Nickseresht I, et al. Influence of various amounts of limestone powder on performance of Portland limestone cement concretes[J]. Cement and Concrete Composites, 2009, 31(10): 715-720.
[21] 郭育霞,贡金鑫,李晶.石粉掺量对混凝土力学性能及耐久性的影响[J].建筑材料学报,2009,12(3):266-271.
[22] Rao S K, Sravana P, Rao T C. Investigating the effect of m-sand on abrasion resistance of fly ash roller compacted concrete (FRCC)[J]. Construction and Building Materials, 2016, 118: 352-363.
[23] Liu Y W, Pann K S. Abrasion resistance of concrete containing surface cracks[J]. Journal of the Chinese Institute of Engineers, 2011, 34(5): 683-694.
[24] 柯国炬,卢忠飞,郝以党,等.路面机制砂水泥混凝土耐磨性影响因素灰色关联分析[J].硅酸盐通报,2011,30(1):216-219.
[25] 杨宁,赵美霞.再生骨料混凝土路面耐磨性的研究[J].建筑科学,2011,27(7):74-77.
[26] Yang H F, Liang D Y, Deng Z H, et al. Effect of limestone powder in manufactured sand on the hydration products and microstructure of recycled aggregate concrete[J]. Construction and Building Materials, 2018, 188: 1045-1049.
[27] 史才军,王德辉,贾煌飞,等.石灰石粉在水泥基材料中的作用及对其耐久性的影响[J].硅酸盐学报,2017,45(11):1582-1593.
[28] 杨华山,方坤河,涂胜金,等.石灰石粉在水泥基材料中的作用及其机理[J].混凝土,2006(6):32-35.
[29] 肖佳,勾成福,金勇刚,等.CaCO₃对硅酸三钙水化性能的影响[J].中南大学学报(自然科学版),2010,41(5):1894-1899.
[30] Thongsanitgarn P, Wongkeo W, Chaipanich A, et al. Heat of hydration of Portland high-calcium fly ash cement incorporating limestone powder: effect of limestone particle size[J]. Construction and Building Materials, 2014, 66: 410-417.
[31] Weerdt K D, Haha M B, Saout G L, et al. Hydration mechanisms of ternary Portland cements containing limestone powder and fly ash[J]. Cement and Concrete Research, 2011, 41(3): 279-291.
[32] Atis C D, Karahan O, Ari K, et al. Relation between strength properties (flexural and compressive) and abrasion resistance of fiber (steel and polypropylene)-reinforced fly ash concrete[J]. Journal of Materials in Civil Engineering, ASCE, 2009, 21(8): 402-408.
[33] 邓聚龙.灰色系统基本方法[M].武汉:华中理工大学出版社,1987.
[34] 董金爽,隋龑,薛建阳.传统风格建筑混凝土梁-柱节点承载力影响参数灰色关联分析[J].建筑科学与工程学报,2019,36(6):80-87.
[35] 高辉,张雄,张永娟,等.筛余砂浆气孔结构对其28 d抗压强度的影响[J].建筑材料学报,2014,17(3):378-382+395.
[36] Pyo S, Abate S Y, Kim H K. Abrasion resistance of ultra high performance concrete incorporating coarser aggregate[J]. Construction and Building Materials, 2018, 165: 11-16.