SO_3和H_3BO_3对高镁熟料中方镁石含量和C_2S晶型的影响
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摘要
高镁熟料的生产具有补偿混凝土收缩和缓解石灰石资源日益匮乏的作用。研究了在水泥生料中外掺SO_3对熟料中方镁石含量的影响,同时研究了SO_3及H_3BO_3单独和共同掺杂对C_2S晶型和水化反应的影响。结果表明,SO_3的掺入有利于减少高镁熟料中方镁石的含量。H_3BO_3掺杂能够稳定β型C_2S,形成Ca_7MgSi_4O_(16)等晶体矿物,掺入SO_3后会导致Ca_7MgSi_4O_(16)中的MgO分解出来,形成方镁石。当SO_3和H_3BO_3同时掺杂稳定β型C_2S时,SO_3内掺4.0%,H_3BO_3内掺0.5%时效果最佳。
High magnesium clinker plays an important role in compensating concrete shrinkage and mitigating limestone re-sources shortage. In this paper,discussed the influence of SO_3 on periclase content and studied the effect of SO_3 and H_3BO_3on polymorphisms and hydration reaction of C_2S in high magnesium content clinker. The results showed that the incorporation of SO_3 could effectively reduce the periclase content in high magnesium clinker,the incorporation of H_3BO_3 could stabilize β-C_2S,formed Ca_7MgSi_4O_(16)the incorporation of SO_3,could lead MgO decomposed from Ca_7MgSi_4O_(16) to form periclase. When SO_3 and H_3BO_3 simultaneously mixed with stabilized β-C_2S,the SO_3 content was 4%,the H_3BO_3 content was 0.5%,the result is optimum.
High magnesium clinker plays an important role in compensating concrete shrinkage and mitigating limestone re-sources shortage. In this paper,discussed the influence of SO_3 on periclase content and studied the effect of SO_3 and H_3BO_3on polymorphisms and hydration reaction of C_2S in high magnesium content clinker. The results showed that the incorporation of SO_3 could effectively reduce the periclase content in high magnesium clinker,the incorporation of H_3BO_3 could stabilize β-C_2S,formed Ca_7MgSi_4O_(16)the incorporation of SO_3,could lead MgO decomposed from Ca_7MgSi_4O_(16) to form periclase. When SO_3 and H_3BO_3 simultaneously mixed with stabilized β-C_2S,the SO_3 content was 4%,the H_3BO_3 content was 0.5%,the result is optimum.
引文
[1]袁美栖,唐明述.吉林白山大坝混凝土自生体积膨胀机理的研究[J].南京工业大学学报:自然科学版,1984(2):38-45.
[2]曹泽生,徐锦华.氧化镁混凝土筑坝技术[M].北京:中国电力出版社,2003:53-60.
[3]许彦明,徐玲玲,李文伟.XRD内标法测定高镁水泥熟料中方镁石含量和水化程度[J].南京工业大学学报:自然科学版,2014,36(5):30-35.
[4]楼宗汉,叶青,陈胡星,等.水泥熟料中氧化镁的水化和膨胀性能[J].硅酸盐学报,1998,26(4):430-436.
[5]李红,邓敏,莫立武.不同活性氧化镁膨胀剂对水泥浆体变形的影响[J].南京工业大学学报:自然科学版,2010,32(6):98-102.
[6]李承木.外掺Mg O微膨胀混凝土筑坝技术应用综述[J].水利水电科技进展,2013,33(5):82-88.
[7]汪澜.水泥工程师手册[M].北京:中国建材工业出版社,1998.
[8]童三多,赵福欣,袁振錡.硅酸盐水泥熟料中方镁石允许含量的探讨[J].硅酸盐学报,1964,8(3):180-192.
[9]曹世璞.节约水泥善待有限的石灰石资源[J].砖瓦世界,2008(7):10.
[10]邓敏,朱颖灿.高镁水泥制备及其膨胀性能[J].南京工业大学学报,2009,31(4):1-5.
[11]汪智勇,王敏,文寨军,等.硅酸二钙及以其为主要矿物的低钙水泥的研究进展[J].材料导报,2016(1):73-77.
[12]Schwiete H E,Kronert W,Deckert K.Existenz bereiche und Stabilisierung von Hochtemperatur modifikationen des Dicalcium silicates[J].Zement Kalk Gips,1968(9):359-362.
[13]Pritts I M,Daugherty K E.The effect of stabilizing agents on the hydration rate ofβ-C2S[J].Cem.Concr.Res.,1976,6:783-786.
[14]冯修吉,龙世宗.微量离子对β-C2S稳定性的影响及其机理研究[J].硅酸盐学报,1985,12(4):424-429.
[15]Gartner E M,Tang F J.Formation and properties of high sulfur Portland cement clinkers[J].I1 Cemento,1987:84-88.
[16]Boikova A I,Fomicheva O I,Grishchenko L V.Effect of SO3and Mg O on phase relations and crystal chemical state of phases in belitealuminoferrite clinkers[C]//Proceedings of the9th International Congress on the Chemistry of Cement.New Delhi,1992:413-420.
[17]管宗甫,陈益民,秦守婉,等.掺杂阳离子在水泥熟料矿物阿利特中的固溶[J].硅酸盐学报,2007,35(4):461-466.
[18]李晓冬,沈裕盛,黎学润,等.SO3掺杂对高镁熟料Alite晶型和水化性能的影响[J].硅酸盐学报,2013(10):1381-1386.
[19]嵇鹰,李霞,陈冠军,等.SO3掺杂对高镁熟料中方镁石含量,C3S晶粒尺寸及晶型的影响[J].硅酸盐通报,2015(4):897-901.
[20]管宗甫,海然,陈湘湘,等.氟硫掺杂对Mg O固溶及高镁熟料结构与性能的影响[J].硅酸盐通报,2014(10):2558-2564.
[2]曹泽生,徐锦华.氧化镁混凝土筑坝技术[M].北京:中国电力出版社,2003:53-60.
[3]许彦明,徐玲玲,李文伟.XRD内标法测定高镁水泥熟料中方镁石含量和水化程度[J].南京工业大学学报:自然科学版,2014,36(5):30-35.
[4]楼宗汉,叶青,陈胡星,等.水泥熟料中氧化镁的水化和膨胀性能[J].硅酸盐学报,1998,26(4):430-436.
[5]李红,邓敏,莫立武.不同活性氧化镁膨胀剂对水泥浆体变形的影响[J].南京工业大学学报:自然科学版,2010,32(6):98-102.
[6]李承木.外掺Mg O微膨胀混凝土筑坝技术应用综述[J].水利水电科技进展,2013,33(5):82-88.
[7]汪澜.水泥工程师手册[M].北京:中国建材工业出版社,1998.
[8]童三多,赵福欣,袁振錡.硅酸盐水泥熟料中方镁石允许含量的探讨[J].硅酸盐学报,1964,8(3):180-192.
[9]曹世璞.节约水泥善待有限的石灰石资源[J].砖瓦世界,2008(7):10.
[10]邓敏,朱颖灿.高镁水泥制备及其膨胀性能[J].南京工业大学学报,2009,31(4):1-5.
[11]汪智勇,王敏,文寨军,等.硅酸二钙及以其为主要矿物的低钙水泥的研究进展[J].材料导报,2016(1):73-77.
[12]Schwiete H E,Kronert W,Deckert K.Existenz bereiche und Stabilisierung von Hochtemperatur modifikationen des Dicalcium silicates[J].Zement Kalk Gips,1968(9):359-362.
[13]Pritts I M,Daugherty K E.The effect of stabilizing agents on the hydration rate ofβ-C2S[J].Cem.Concr.Res.,1976,6:783-786.
[14]冯修吉,龙世宗.微量离子对β-C2S稳定性的影响及其机理研究[J].硅酸盐学报,1985,12(4):424-429.
[15]Gartner E M,Tang F J.Formation and properties of high sulfur Portland cement clinkers[J].I1 Cemento,1987:84-88.
[16]Boikova A I,Fomicheva O I,Grishchenko L V.Effect of SO3and Mg O on phase relations and crystal chemical state of phases in belitealuminoferrite clinkers[C]//Proceedings of the9th International Congress on the Chemistry of Cement.New Delhi,1992:413-420.
[17]管宗甫,陈益民,秦守婉,等.掺杂阳离子在水泥熟料矿物阿利特中的固溶[J].硅酸盐学报,2007,35(4):461-466.
[18]李晓冬,沈裕盛,黎学润,等.SO3掺杂对高镁熟料Alite晶型和水化性能的影响[J].硅酸盐学报,2013(10):1381-1386.
[19]嵇鹰,李霞,陈冠军,等.SO3掺杂对高镁熟料中方镁石含量,C3S晶粒尺寸及晶型的影响[J].硅酸盐通报,2015(4):897-901.
[20]管宗甫,海然,陈湘湘,等.氟硫掺杂对Mg O固溶及高镁熟料结构与性能的影响[J].硅酸盐通报,2014(10):2558-2564.