路面砖泛碱抑制研究
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摘要
探讨了路面砖发生泛碱的机理,利用X射线衍射仪分析了泛碱物质成分,提出了一种新的测试泛碱的方法,并研究了硅烷基粉末SHP-50和粉煤灰对路面砖泛碱的影响规律。试验结果表明,泛碱产物的成分主要为碳酸氢钠和无水芒硝;此新型测试泛碱方法能更好的检验路面砖的抗泛碱能力;随着SHP-50含量的增加,路面砖的泛碱程度越来越轻直至无可见泛碱;随着粉煤灰掺量的提高,路面砖的泛碱程度有所减轻。
The mechanism of efflorescence formation in pavement bricks was discussed. The method of Xray diffractometer was used to analyze the composition of efflorescence. A novel method for testing efflorescence was proposed. Moreover, the effects of SHP-50 silicon alkyl powder and fly ash on efflorescence were investigated. The results show that the main components of the efflorescence on bricks are sodium bicarbonate and anhydrous glauber's salt. This new method proposed in this paper is a high way to test the anti-efflorescence property of pavement bricks. With the increase of the amount of SHP-50,the degree of efflorescence on bricks was decreased. As the amount of fly ash increased,the degree of efflorescence on bricks gets lower.
The mechanism of efflorescence formation in pavement bricks was discussed. The method of Xray diffractometer was used to analyze the composition of efflorescence. A novel method for testing efflorescence was proposed. Moreover, the effects of SHP-50 silicon alkyl powder and fly ash on efflorescence were investigated. The results show that the main components of the efflorescence on bricks are sodium bicarbonate and anhydrous glauber's salt. This new method proposed in this paper is a high way to test the anti-efflorescence property of pavement bricks. With the increase of the amount of SHP-50,the degree of efflorescence on bricks was decreased. As the amount of fly ash increased,the degree of efflorescence on bricks gets lower.
引文
[1]贾力.混凝土路面砖生产过程中应注意的问题[J].建筑砌块与砌块建筑,2005(2):42-43.
[2]Dow C,Glasser F P.Calcium carbonate efflorescence on Portland cement and building materials[J].Cement and Concrete Research,2003,33:147-154.
[3]王宗昌.混凝土表面泛碱的原因及对策[J].腐蚀与防护,1998(5):236-237.
[4]Nour S,Marc P.Effect of efflorescence formation on drying kinetics of porous media[J].Transport in Porous Media,2009,80(3):441-454
[5]Kresse P.Efflorescence-mechanism of occurrence and possibilities of prevention[J].Betonw.Fert.t1.-Tech.,1987,53:160-168.
[6]Zhu H M,Wang P M,Zhang G F.Influence of vinyl acetate/ethylene copolymer powder on secondary efflorescence in Portland cement-based decorative mortar[J].Journal of Zhejiang University-Science A(Applied Physics&Engineering),2015(2):143-150.
[7]王培铭,张灵,朱绘美,等.胶凝材料影响水泥基饰面砂浆泛碱的研究进展[J].材料导报,2011(S1):464-466.
[8]杨彦春.水泥基饰面砂浆泛碱抑制剂的研究进展[A].中国硅酸盐学会房材分会、中国建筑学会建筑材料分会、中国硅酸盐学会水泥分会,2013:6.
[9]张铬,徐迅,李英丁,等.Nanothix~B1490在水泥基彩色填缝剂中的应用[J].化学建材,2008(1):27-28.
[10]李光球,薛亮亮.饰面砂浆抗泛碱性能的研究[J].混凝土与水泥制品,2012(6):53-55.
[11]Puyate Y T,Lawrence C J.Steady state solutions for chloride distribution due to wick action in concrete[J].Chemical Engineering Science,2000,55(16):3329-3334.
[12]Novokshchenov V."Investigation of Concrete Deterioration Due to Sulfate Attack-A Case History",Concrete Durability,SP-100,V.2[M].Farmington Hills:American Concrete Institute,1987:1979-2006.
[13]Puyate Y T,Lawrence C J.Wick action at moderate Peclet number[J].Physics of Fluids,1998,10(8):2116-2118.
[14]Puyate Y T,Lawrence C J.Effect of solute parameters on wick action in concrete[J].Chemical Engineering Science,1999,54(19):4258-4265.
[15]Cardell C,Benavente D,Rodriguez-Gordillo J.Weathering of limestone building material by mixed sulfate solutions.Characterization of stone microstructure,reaction products and decay forms[J].Materials Characterization,2008,59(10):1371-1385.
[16]Nicholas T,Robert J F,George W S.Crystallization damage by sodium sulfate[J].Journal of Cultural Heritage,2003(4):109-15.
[17]Genkinger,Selma,Putnis,et al.Crystallization of sodium sulfate:Supersaturation and metastable phases[J].Environmental Geology,2007,52(2):295-303.
[18]王培铭.测试方法及环境条件对饰面砂浆早期泛白的影响[A].中国硅酸盐学会水泥分会、上海市硅酸盐学会,2011:7.
[19]朱绘美,王培铭,张国防.憎水剂影响硅酸盐水泥基饰面砂浆泛白的机理[J].建筑材料学报,2014,17(5):882-886+900.
[20]易燕,朱传娣.仿文化砖泛碱抑制研究[J].江苏建筑,2016(3):97-99.
[2]Dow C,Glasser F P.Calcium carbonate efflorescence on Portland cement and building materials[J].Cement and Concrete Research,2003,33:147-154.
[3]王宗昌.混凝土表面泛碱的原因及对策[J].腐蚀与防护,1998(5):236-237.
[4]Nour S,Marc P.Effect of efflorescence formation on drying kinetics of porous media[J].Transport in Porous Media,2009,80(3):441-454
[5]Kresse P.Efflorescence-mechanism of occurrence and possibilities of prevention[J].Betonw.Fert.t1.-Tech.,1987,53:160-168.
[6]Zhu H M,Wang P M,Zhang G F.Influence of vinyl acetate/ethylene copolymer powder on secondary efflorescence in Portland cement-based decorative mortar[J].Journal of Zhejiang University-Science A(Applied Physics&Engineering),2015(2):143-150.
[7]王培铭,张灵,朱绘美,等.胶凝材料影响水泥基饰面砂浆泛碱的研究进展[J].材料导报,2011(S1):464-466.
[8]杨彦春.水泥基饰面砂浆泛碱抑制剂的研究进展[A].中国硅酸盐学会房材分会、中国建筑学会建筑材料分会、中国硅酸盐学会水泥分会,2013:6.
[9]张铬,徐迅,李英丁,等.Nanothix~B1490在水泥基彩色填缝剂中的应用[J].化学建材,2008(1):27-28.
[10]李光球,薛亮亮.饰面砂浆抗泛碱性能的研究[J].混凝土与水泥制品,2012(6):53-55.
[11]Puyate Y T,Lawrence C J.Steady state solutions for chloride distribution due to wick action in concrete[J].Chemical Engineering Science,2000,55(16):3329-3334.
[12]Novokshchenov V."Investigation of Concrete Deterioration Due to Sulfate Attack-A Case History",Concrete Durability,SP-100,V.2[M].Farmington Hills:American Concrete Institute,1987:1979-2006.
[13]Puyate Y T,Lawrence C J.Wick action at moderate Peclet number[J].Physics of Fluids,1998,10(8):2116-2118.
[14]Puyate Y T,Lawrence C J.Effect of solute parameters on wick action in concrete[J].Chemical Engineering Science,1999,54(19):4258-4265.
[15]Cardell C,Benavente D,Rodriguez-Gordillo J.Weathering of limestone building material by mixed sulfate solutions.Characterization of stone microstructure,reaction products and decay forms[J].Materials Characterization,2008,59(10):1371-1385.
[16]Nicholas T,Robert J F,George W S.Crystallization damage by sodium sulfate[J].Journal of Cultural Heritage,2003(4):109-15.
[17]Genkinger,Selma,Putnis,et al.Crystallization of sodium sulfate:Supersaturation and metastable phases[J].Environmental Geology,2007,52(2):295-303.
[18]王培铭.测试方法及环境条件对饰面砂浆早期泛白的影响[A].中国硅酸盐学会水泥分会、上海市硅酸盐学会,2011:7.
[19]朱绘美,王培铭,张国防.憎水剂影响硅酸盐水泥基饰面砂浆泛白的机理[J].建筑材料学报,2014,17(5):882-886+900.
[20]易燕,朱传娣.仿文化砖泛碱抑制研究[J].江苏建筑,2016(3):97-99.