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第59卷 [8]钟美秦,刘光明,张奇男机制砂在铁路高性能混凝土中的 the Hydration of Portland Limestone Cement by Means of TG 应用研究[J]混凝土世界,2014(10):34-44. [J. Journal of Thermal Analysis and Calorimetry, 1998, 52 [9]黄滕斌混合砂C60预应力混凝土在铁路预制T梁中的应 (3):863-870 用研究[].北方交通,2015(1):21-23 [16]方玲普通混凝土抗压与抗折强度分析[J].电大理工, 10]高波,夏京亮,徐鑫,等内马铁路机制砂轨枕C60混凝土 2017(2):3-4. 配制及性能研究[J]中国铁路,2018(3) [1门]蒋正武,梅世龙机制砂高性能混凝土[M]北京:化学工业 [I]国家铁路局高速铁路预制后张法预应力混凝土简支梁: 出版社,2015 TBT3423-2016S]北京:中国铁道出版社,2016 [18]杨玉辉C80机制砂混凝土的配制与性能研究[D].武汉 [12]中国铁路总公司高速铁路CRTSⅢ型板式无砟轨道先张 武汉理工大学,2007,23-38 法预应力混凝土轨道板:QCR567-2017[S].北京:中国[19] ZHANG P,LUG, PANG C, et al. Influence of pore structures 铁道出版社,2017 on the Frost Resistance of Concrete[J]. Magazine of Concrete 13]中华人民共和国铁道部混凝土枕:TB/T2190-2013[S] Research,2017,69(6):1-9 北京:中国铁道出版社,2013. [20]蒋正武,任启欣,吴建林,等机制砂特性及其在混凝土中应 [14 ]SHEN W, YANG Z, CAO L, et al. Characterization of Manufac 用的相关问题研究[J]新型建筑材料,2010,37(11):1-4. tured sand: Particle Shape, Surface texture and behavior in[2l]李凤兰机制砂混凝土概论[M]北京:中国水利水电出版 Concrete[J]. Construction and Building Materials, 2016, 114 社,2014 595-601. [2】]阎培渝,周智凯,刘卫未,等.高强自密实混凝土徐变特性 [15]TSIVILIS S, KAKALI G, CHANIOTAKIS E, et al. A Study on 的研究[J].工业建筑,2016,46(9):108-1 Study on Performance of Manufactured Sand Concrete for Prestressed Structures in Railway Engineering WANG Zhen, 2.HAN Zili, 2, LI Huajian HUANG Fali' (1. Railway Engineering Research Institute, China Academy of Railway Sciences Group Co. Ltd, Beijing 100081, China 2. State Key Laboratory for Track Technology of High-Speed Railway, Beijing 100081, Chin Abstract Taking concrete used for beam and track slab as research object, the performance differences between manufactured sand concrete and river sand concrete for prestressed structures in railway engineering were contrastively studied from the aspects of workability, mechanical property, durability, shrinkage and creep. The results show that more superplasticizer and air-entraining agent should be added to manufactured sand concrete to achieve the same workability as river sand concrete. The early compressive strength, bending strength and elasticity modulus of the manufactured sand concrete are improved due to the hydration promotion effect of limestone powder and the particle effect of manufactured sand. The filling effect of limestone powder is conducive to improving the compactness of concrete and reducing the ion diffusion coefficient and electric flux of concrete. The frost resistance of anufactured sand concrete meets the technical requirements of beam and track slab. The change rule of shrinkage and creep of the manufactured sand concrete is consistent with that of the river sand concrete Key words Manufactured sand concrete; Prestressed structure Strength; Durability; Shrinkage and creep (责任审编李付军)铁 道 建 筑 第 59 卷 [ 8 ]钟美秦ꎬ刘光明ꎬ张奇男.机制砂在铁路高性能混凝土中的 应用研究[J].混凝土世界ꎬ2014(10):34 ̄44. [ 9 ]黄滕斌.混合砂 C60 预应力混凝土在铁路预制 T 梁中的应 用研究[J].北方交通ꎬ2015(1):21 ̄23. [10]高波ꎬ夏京亮ꎬ徐鑫ꎬ等.内马铁路机制砂轨枕 C60 混凝土 配制及性能研究[J].中国铁路ꎬ2018(3):48 ̄53. [11]国家铁路局.高速铁路预制后张法预应力混凝土简支梁: TB/ T 3423—2016[S].北京:中国铁道出版社ꎬ2016. [12]中国铁路总公司.高速铁路 CRTSⅢ型板式无砟轨道先张 法预应力混凝土轨道板:Q/ CR567—2017[ S].北京:中国 铁道出版社ꎬ2017. [13]中华人民共和国铁道部.混凝土枕:TB/ T 2190—2013[ S]. 北京:中国铁道出版社ꎬ2013. [14]SHEN WꎬYANG ZꎬCAO Lꎬet al.Characterization of Manufac ̄ tured Sand:Particle Shapeꎬ Surface Texture and Behavior in Concrete[J].Construction and Building Materialsꎬ2016ꎬ114: 595 ̄601. [15]TSIVILIS SꎬKAKALI GꎬCHANIOTAKIS Eꎬet al.A Study on the Hydration of Portland Limestone Cement by Means of TG [J].Journal of Thermal Analysis and Calorimetryꎬ 1998ꎬ 52 (3):863 ̄870. [16]方玲.普通混凝土抗压与抗折强度分析[ J].电大理工ꎬ 2017(2):3 ̄4. [17]蒋正武ꎬ梅世龙.机制砂高性能混凝土[M].北京:化学工业 出版社ꎬ2015. [18]杨玉辉.C80 机制砂混凝土的配制与性能研究[D].武汉: 武汉理工大学ꎬ2007ꎬ23 ̄38. [19]ZHANG PꎬLIU GꎬPANG Cꎬet al.Influence of Pore Structures on the Frost Resistance of Concrete[ J].Magazine of Concrete Researchꎬ2017ꎬ69(6):1 ̄9. [20]蒋正武ꎬ任启欣ꎬ吴建林ꎬ等.机制砂特性及其在混凝土中应 用的相关问题研究[J].新型建筑材料ꎬ2010ꎬ37(11):1 ̄4. [21]李凤兰.机制砂混凝土概论[M].北京:中国水利水电出版 社ꎬ2014. [22]阎培渝ꎬ周智凯ꎬ刘卫未ꎬ等.高强自密实混凝土徐变特性 的研究[J].工业建筑ꎬ2016ꎬ46(9):108 ̄111. Study on Performance of Manufactured Sand Concrete for Prestressed Structures in Railway Engineering WANG Zhen 1ꎬ2 ꎬHAN Zili 1ꎬ2 ꎬLI Huajian 1ꎬ2 ꎬHUANG Fali 1ꎬ2 ꎬYI Zhonglai 1ꎬ2 (1.Railway Engineering Research InstituteꎬChina Academy of Railway Sciences Group Co. Ltd.ꎬBeijing 100081ꎬChinaꎻ 2.State Key Laboratory for Track Technology of High ̄Speed RailwayꎬBeijing 100081ꎬChina) Abstract Taking concrete used for beam and track slab as research objectꎬthe performance differences between manufactured sand concrete and river sand concrete for prestressed structures in railway engineering were contrastively studied from the aspects of workabilityꎬmechanical propertyꎬdurabilityꎬshrinkage and creep.The results show that more superplasticizer and air ̄entraining agent should be added to manufactured sand concrete to achieve the same workability as river sand concrete.The early compressive strengthꎬbending strength and elasticity modulus of the manufactured sand concrete are improved due to the hydration promotion effect of limestone powder and the particle effect of manufactured sand.The filling effect of limestone powder is conducive to improving the compactness of concrete and reducing the ion diffusion coefficient and electric flux of concrete. The frost resistance of manufactured sand concrete meets the technical requirements of beam and track slab.The change rule of shrinkage and creep of the manufactured sand concrete is consistent with that of the river sand concrete. Key words Manufactured sand concreteꎻPrestressed structureꎻStrengthꎻDurabilityꎻShrinkage and creep (责任审编 李付军) 16
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