机场道面浅层高早强快速修补砂浆的性能研究
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摘要
在满足繁忙机场不停航施工要求下,制备出道面浅层高早强快速修补砂浆对保障飞机准点运行及安全起降具有重要意义。采用自制的特种胶凝材料,通过优选砂胶比、水胶比及外加剂复配等技术制备出高早强快速修补砂浆,研究该修补砂浆的力学性能、黏结性能与耐久性能。结果表明:高早强快速修补砂浆2h抗压、抗折强度分别为32.5MPa和4.8MPa,且2h和28d黏结强度可分别达到其抗折强度的75%和84%;与C40混凝土相比,该修补砂浆早期具有微膨胀性,可补偿收缩,减小与旧混凝土间变形差异,120d收缩率降低了60.5%,3d耐磨性可达到C40混凝土28d的耐磨性,且具有优良的抗渗性与抗冲击性。
In order to meet the requirements of non-suspend air construction of busy airports,the preparation of high early strength quick repairing mortar is of great significance to ensure on-time operation of aircraft and the safety of aircraft take-off and landing.The special cementing material is used to prepare quick repair mortar.It is obtained by optimizing the sand to binder ratio,the water to binder ratio and the proportion of admixtures.The mechanical properties,bond properties and durability of the repaired mortar are studied.Results indicate that Its2 hcompressive strength and flexural strength can reach 32.5 MPa and 4.8 MPa,respectively,and the bending strength reached 75% and 84% of the flexural strength at 2 hand 28 d,respectively.Compared with C40 concrete,the repair mortar has micro-expansion in the early stage,which can compensate for shrinkage and reduce the deformation difference between the old concrete.The shrinkage rate of the 120 dis reduced by 60.5%,and the wear resistance of 3 dcan reach the wear resistance of C40 concrete for 28 d.At the same time,it has excellent impermeability and impact resistance.
In order to meet the requirements of non-suspend air construction of busy airports,the preparation of high early strength quick repairing mortar is of great significance to ensure on-time operation of aircraft and the safety of aircraft take-off and landing.The special cementing material is used to prepare quick repair mortar.It is obtained by optimizing the sand to binder ratio,the water to binder ratio and the proportion of admixtures.The mechanical properties,bond properties and durability of the repaired mortar are studied.Results indicate that Its2 hcompressive strength and flexural strength can reach 32.5 MPa and 4.8 MPa,respectively,and the bending strength reached 75% and 84% of the flexural strength at 2 hand 28 d,respectively.Compared with C40 concrete,the repair mortar has micro-expansion in the early stage,which can compensate for shrinkage and reduce the deformation difference between the old concrete.The shrinkage rate of the 120 dis reduced by 60.5%,and the wear resistance of 3 dcan reach the wear resistance of C40 concrete for 28 d.At the same time,it has excellent impermeability and impact resistance.
引文
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[21]柯国炬,李北星,赵尚传,等.路面机制砂水泥混凝土的强度与耐磨性研究[J].混凝土,2009(10):77-79.Ke Guoju,Li Beixing,Zhao Shangchuan,et al.Strength and abrasion resistance of pavement manufactured sand cement concrete[J].Concrete,2009(10):77-79.(in Chinese)
[2]陈丹梅.民航机场飞行区道面损坏的修复[J].混凝土,2003(5):49-50.Chen Danmei.Repair of road surface damage at civil aviation airport[J].Concrete,2003(5):49-50.(in Chinese)
[3]王硕太,刘晓曦,马国靖,等.机场混凝土道面新型封缝材料[J].新型建筑材料,2002(11):26-28.Wang Shuotai,Liu Xiaoxi,Ma Guojing,et al.New type airport concrete pavement sealing materials[J].New Building Materials,2002(11):26-28.(in Chinese)
[4]Kim S H,Park J Y,Jeong J H.Effect of temperature-induced load on airport concrete pavement behavior[J].Ksce Journal of Civil Engineering,2014,18(1):182-187.
[5]刘金龙,韩建德,王曙光,等.硫酸盐侵蚀与环境多因素耦合作用下混凝土耐久性研究进展[J].混凝土,2014(9):33-40.Liu Jinlong,Han Jiande,Wang Shuguang,et al.Overview of concrete durability under sulfate attack and multi-factor coupling effects[J].Concrete,2014(9):33-40.(in Chinese)
[6]金南国,徐亦斌,付传清,等.荷载、碳化和氯盐侵蚀对混凝土劣化的影响[J].硅酸盐学报,2015,43(10):1483-1491.Jin Nanguo,Xu Yibin,Fu Chuanqing,et al.Influence of carbonation,chloride attack and loading on concrete deterioration[J].Journal of the Chinese Ceramic Society,2015,43(10):1483-1491.(in Chinese)
[7]Bieliatynskyi A,Krayushkina E,Skrypchenko A.Modern technologies and materials for cement concrete pavement’s repair[J].Procedia Engineering,2016,134(3):344-347.
[8]Faturechi R,Levenberg E,Millerhooks E.Evaluating and optimizing resilience of airport pavement networks[J].Computers and Operations Research,2014,43:335-348.
[9]Price J C,Forrest J S.Chapter 3-Operations and the airport environment[J].Practical Airport Operations Safety and E-mergency Management,2016:39-65.
[10]Reza Faturechi,Eyal Levenberg,Elise Miller-Hooks.Evaluating and optimizing resilience of airport pavement networks[J].Computers and Operations Research,2014,43:335-348.
[11]YooSeok Jung,Wuguang Lin,Han Hao,et al.Interface behavior of partial depth repair for airport concrete pavement subjected to differential volume change[J].Construction and Building Materials,2017,143:515-521.
[12]Yang Q,Zhu B,Wu X.Characteristics and durability test of magnesium phosphate cement-based material for rapid repair of concrete[J].Materials&Structures,2000,33(4):229-234.
[13]孙佳龙,黄煜镔,范英儒,等.磷酸镁水泥用作道路的快速修补材料研究[J].功能材料,2018,49(1):1040-1043.Sun Jialong,Huang Yubin,Fan Yingru,et al.Magnesium phosphate cement as rapid road repair material[J].Journal of Functional Materials,2018,49(1):1040-1043.(in Chinese)
[14]杨正宏,尹义林,曲生华,等.道路用聚合物改性水泥砂浆修补材料的研制[J].新型建筑材料,2006(2):1-4.Yang Zhenghong,Yin Yilin,Qu Shenghua,et al.Development of polymer modified cement mortar for road repair[J].New Building Materials,2006(2):1-4.(in Chinese)
[15]张文武,张玉宏,何兆益,等.环氧树脂砂浆在水泥路面错台修补中的应用[J].筑路机械与施工机械化,2009,26(8):53-55.Zhang Wenwu,Zhang Yuhong,He Zhaoyi,et al.Application of epoxy resin mortar in repairing faulting of slab ends of cement pavement[J].Road Machinery&Construction Mechanization,2009,26(8):53-55.(in Chinese)
[16]Luo J,Li Q,Zhao T,et al.Bonding and toughness properties of PVA fibre reinforced aqueous epoxy resin cement repair mortar[J].Construction&Building Materials,2013,49(12):766-771.
[17]Zhao H,Sun W,Wu X,et al.The properties of the selfcompacting concrete with fly ash and ground granulated blast furnace slag mineral admixtures[J].Journal of Cleaner Production,2015,95:66-74.
[18]Keulen A,Yu Q L,Zhang S,et al.Effect of admixture on the pore structure refinement and enhanced performance of alkali-activated fly ash-slag concrete[J].Construction&Building Materials,2018,162:27-36.
[19]高丹盈,程红强,朱海堂,等.钢纤维混凝土与老混凝土劈拉粘结强度的研究[J].建筑材料学报,2007,10(5):505-509.Gao Danying,Cheng Hongqiang,Zhu Haitang,et al.Splitting tensile bonding strength of steel fiber reinforced concrete to old concrete[J].Journal of Building Materials,2007,10(5):505-509.(in Chinese)
[20]彭艳周,丁庆军,胡曙光,等.硫铝酸盐水泥早强微膨胀钢管混凝土的制备[J].建筑材料学报,2008,11(6):636-641.Peng Yanzhou,Ding Qingjun,Hu Shuguang,et al.Preparation of steel tube-confined concrete with high earlystrengthand micro expansion by using sulphoaluminate cement[J].Journal of Building Materials,2008,11(6):636-641.(in Chinese)
[21]柯国炬,李北星,赵尚传,等.路面机制砂水泥混凝土的强度与耐磨性研究[J].混凝土,2009(10):77-79.Ke Guoju,Li Beixing,Zhao Shangchuan,et al.Strength and abrasion resistance of pavement manufactured sand cement concrete[J].Concrete,2009(10):77-79.(in Chinese)