钢渣对磷酸镁水泥性能的影响研究
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摘要
研究了钢渣掺量对磷酸镁水泥力学性能和导电性的影响,并结合压汞法、XRD和SEM分析其机理。研究结果表明:随着钢渣掺量的增加磷酸镁水泥的抗压强度先上升后降低,15%时达到最优;而其抗折强度逐渐减小。钢渣的加入并未改变磷酸镁水泥的水化产物,它主要作为一种惰性填充材料分散在磷酸镁水泥基体中。钢渣的加入提高了磷酸镁水泥的导电性,随其掺量的增加,磷酸镁水泥的电阻率逐渐降低。
The effect of steel slag content on the mechanical properties and electrical conductivity of magnesium phosphate cement was studied,and the mechanism was analyzed by XRD,SEM and the mercury injection method. The results show that the compressive strength of magnesium phosphate cement first increases and then decreases with the increase of steel slag content,and reaches the best when the dosage is 15%. The flexural strength decreases with the increase of slag content. The conductivity of magnesium phosphate cement increases gradually with the increase of the content of steel slag. After steel slag incorporation,no new hydration products are found,which only as an inert filler material dispersed in magnesium phosphate cement matrix. The addition of steel slag increases the electrical conductivity of magnesium phosphate cement. With the increase of steel slag content,the electrical resistance of magnesium phosphate cement decreases gradually.
The effect of steel slag content on the mechanical properties and electrical conductivity of magnesium phosphate cement was studied,and the mechanism was analyzed by XRD,SEM and the mercury injection method. The results show that the compressive strength of magnesium phosphate cement first increases and then decreases with the increase of steel slag content,and reaches the best when the dosage is 15%. The flexural strength decreases with the increase of slag content. The conductivity of magnesium phosphate cement increases gradually with the increase of the content of steel slag. After steel slag incorporation,no new hydration products are found,which only as an inert filler material dispersed in magnesium phosphate cement matrix. The addition of steel slag increases the electrical conductivity of magnesium phosphate cement. With the increase of steel slag content,the electrical resistance of magnesium phosphate cement decreases gradually.
引文
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[15]蔡琪瑛.磨细钢渣粉对水泥混凝土性能影响的研究[J].混凝土与水泥制品,2012(5):5-8.
[16]张士萍,赵宇,宗兰,等.钢渣在水泥混凝土中应用的可行性研究[J].江苏建材,2017(1):27-31.
[17]朱桂林,张淑苓,陈旭斌,等.钢铁渣综合利用科技创新与循环经济,节能减排[J].冶金环境保护,2012(1):27-33.
[18] Li Y. Recycling of steel slag for energy saving and its application in high performance concrete[C]. Power and Energy Engineering Conference,2009. APPEEC 2009. Asia-Pacific. IEEE,2009:1-4.
[19]冯春花,李东旭,苗琛,等.助磨剂对钢渣细度和活性的影响[J].硅酸盐学报,2010,38(7):1160-1166.
[20]陈益民,张洪滔.磨细钢渣粉作水泥高活性混合材料的研究[J].水泥,2001(5):1-4.
[21]潘如意.不同细度钢渣的活性研究[J].水泥,2012(4):10-12.
[22]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.
[23]赵计辉,阎培渝.钢渣的体积安定性问题及稳定化处理的国内研究进展[J].硅酸盐通报,2017,36(2):477-484.
[24] Hall D A,Stevens R,El-Jazairi B. The effect of retarders on the microstructure and mechanical properties of magnesia-phosphate cements mortar[J]. Cem. Concr. Res.,2001,31(3):389-396.
[25] Xu B W,Ma H Y,Li Z J. Influence of magnesia-to-phosphate molar ratio on microstructures,mechanical properties and thermal conductivity of magnesium potassium phosphate cement paste with large water-to-solid ratio[J]. Cem. Concr. Res.,2015(68):1-9.
[26] Ma H Y,Xu B W,Liu J. Effects of water content,magnesia-to-phosphate molar ratio and age on pore structure,strength and permeability of magnesium potassium phosphate cement paste[J]. Materials and Design,2014,64:497-502.
[27] Sugama T,Kukacka L E. Magnesium mono-phosphate cement derived from diammonium phosphate solutions[J]. Cem. Concr. Res.,1983,13(3):407-416.
[28]刘昌胜,陈飞跃.原料颗粒对磷酸钙骨水泥水化硬化过程的影响[J].硅酸盐学报,1999,27(2):139-147.
[29] Liu N,Chen B. Experimental research on magnesium phosphate cements containing alumina[J]. Construction and Building Materials,2016,121:354-360.
[2]刘凯,李东旭.磷酸镁水泥的研究与应用进展[J].材料导报,2007,25(7):97-100.
[3]姜洪义,梁波,张联盟. MPB超早强混凝土修补材料的研究[J].建筑材料学报,2001,4(2):196-198.
[4] Li Y,Chen B. Factors that affect the properties of magnesium phosphate cement[J]. Construction and Building Materials,2013,47:977-983.
[5]杨全兵,雷博宇.粉煤灰对磷酸盐水泥砂浆与混凝土之间粘结性能的影响[J].粉煤灰综合利用,2016(2):8-10.
[6]李红辉.大掺量粉煤灰高性能混凝土研究[D].北京:北京建筑工程学院,2007.
[7] Li Y,Sun J,Li J,et al. Effects of fly ash,retarder and calcination of magnesia on properties of magnesia-phosphate cement[J]. Advances in Cement Research,2015,27(7):373-380.
[8]林玮,孙伟,李宗津.磷酸镁水泥中的粉煤灰效应研究[J].建筑材料学报,2010,13(6):716-721.
[9]陈兵,吴震,吴雪萍.磷酸镁水泥改性试验研究[J].武汉理工大学学报,2011,33(4):29-34.
[10]侯磊,李金洪,王浩林.矿渣磷酸镁水泥的力学性能和水化机理[J].岩石矿物学杂志,2011,30(4):721-726.
[11]赵旭光,赵三银,曾小星,等.高性能矿渣基复合掺合料的研究[J].硅酸盐通报,2005,24(4):52-57.
[12] Tan Y,Yu H,Li Y,et al. The effect of slag on the properties of magnesium potassium phosphate cement[J]. Construction and Building Materials,2016,126:313-320.
[13]汪宏涛,钱觉时,王建国.磷酸镁水泥的研究进展[J].材料导报,2005,19(12):46-51.
[14]涂昆,刘家祥,邓侃.钢渣粉和钢渣水泥的活性及水化机理研究[J].北京化工大学学报(自然科学版),2015,42(1):62-68.
[15]蔡琪瑛.磨细钢渣粉对水泥混凝土性能影响的研究[J].混凝土与水泥制品,2012(5):5-8.
[16]张士萍,赵宇,宗兰,等.钢渣在水泥混凝土中应用的可行性研究[J].江苏建材,2017(1):27-31.
[17]朱桂林,张淑苓,陈旭斌,等.钢铁渣综合利用科技创新与循环经济,节能减排[J].冶金环境保护,2012(1):27-33.
[18] Li Y. Recycling of steel slag for energy saving and its application in high performance concrete[C]. Power and Energy Engineering Conference,2009. APPEEC 2009. Asia-Pacific. IEEE,2009:1-4.
[19]冯春花,李东旭,苗琛,等.助磨剂对钢渣细度和活性的影响[J].硅酸盐学报,2010,38(7):1160-1166.
[20]陈益民,张洪滔.磨细钢渣粉作水泥高活性混合材料的研究[J].水泥,2001(5):1-4.
[21]潘如意.不同细度钢渣的活性研究[J].水泥,2012(4):10-12.
[22]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.
[23]赵计辉,阎培渝.钢渣的体积安定性问题及稳定化处理的国内研究进展[J].硅酸盐通报,2017,36(2):477-484.
[24] Hall D A,Stevens R,El-Jazairi B. The effect of retarders on the microstructure and mechanical properties of magnesia-phosphate cements mortar[J]. Cem. Concr. Res.,2001,31(3):389-396.
[25] Xu B W,Ma H Y,Li Z J. Influence of magnesia-to-phosphate molar ratio on microstructures,mechanical properties and thermal conductivity of magnesium potassium phosphate cement paste with large water-to-solid ratio[J]. Cem. Concr. Res.,2015(68):1-9.
[26] Ma H Y,Xu B W,Liu J. Effects of water content,magnesia-to-phosphate molar ratio and age on pore structure,strength and permeability of magnesium potassium phosphate cement paste[J]. Materials and Design,2014,64:497-502.
[27] Sugama T,Kukacka L E. Magnesium mono-phosphate cement derived from diammonium phosphate solutions[J]. Cem. Concr. Res.,1983,13(3):407-416.
[28]刘昌胜,陈飞跃.原料颗粒对磷酸钙骨水泥水化硬化过程的影响[J].硅酸盐学报,1999,27(2):139-147.
[29] Liu N,Chen B. Experimental research on magnesium phosphate cements containing alumina[J]. Construction and Building Materials,2016,121:354-360.