矿物掺合料对海水中氯离子的结合能力
Bonding Performance of Mineral Admixture to Chloride in Sea Water
摘 要
研究了0~50%粉煤灰净浆、0~65%矿渣净浆以及0~8%硅灰净浆在海水和NaCl两种溶液中的氯离子结合规律.结果表明:净浆在NaCl溶液中,其结合氯离子量为4.8~4.9mg Cl-/g净浆;海水中存在的SO2-4降低了Friedel盐的生成量,使净浆的结合氯离子量降低33%~46%.矿渣及0~35%的粉煤灰能提高净浆的氯离子结合能力,而硅灰的掺入降低了净浆的结合氯离子量.当矿渣和粉煤灰掺量为35%和15%时,净浆的结合氯离子量最大.随浸泡龄期延长,大掺量矿粉净浆的结合氯离子量会相应增加.最后,使用DTG和XRD技术研究了上述规律产生的微观机理.
结合氯离子
海水
矿物掺合料
微观
paste
bound chloride
sea water
mineral admixture
microstructure
Abstract
The bonding performance to chloride of plain paste,pastes with 0~50% fly ash,paste with 0~65% GGBS (ground granulate blast furnace slag) and paste with 0~8% silica fume was investigated in NaCl solution and sea water.The results show that the bound amount of chloride was about 4.8~4.9 mg Cl-/g paste in NaCl solution,and it was reduced by about 33%~46% in sea water because the formation of ettringite resulted in the decrease of Friedel's salt content.GGBS or 0~35% fly ash could improve the bonding capacity of the pastes to chloride,while silica fume decreased it.The bound chloride content was maximal for pastes with 35% GGBS or 15% fly ash.Additionally,the bound chloride content of the paste with a great deal of GGBS increased with the increase of immersion time.The mechanism was also investigated by DTG (differential thermomechanic analysis) and XRD(X-ray diffraction)techniques.
中图分类号 TU502
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(50708046);国家自然科学基金重点资助项目(50739001);建设部资助项目(2007-K6-31)
收稿日期 2008/11/11
修改稿日期 2008/12/30
网络出版日期
作者单位点击查看
备注金祖权,副教授,博士.
引用该论文: JIN Zu-quan,SUN Wei,LI Qiu-yi,ZHAO Tie-jun. Bonding Performance of Mineral Admixture to Chloride in Sea Water[J]. Corrosion & Protection, 2009, 30(12): 869～873
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】Paul Brown,James Bothe Jr.The system CaO-Al2O3-CaCl2-H2O at 23±2 ℃ and the mechanisms of chloride binding in concrete[J].Cement and Concrete Research,2004(34):1549-1553.
【2】Elsener B,Angst U.Mechanism of electrochemical chloride removal[J].Corrosion Science,2007(49):4504-4522.
【3】Ki Yong Ann,Ha-Won Song.Chloride threshold level for corrosion of steel in concrete[J].Corrosion Science,2007(49):4113-4133.
【4】Byung Hwan Oh,Seung Yup Jang.Effects of material and environmental parameters on chloride penetration profiles in concrete structures[J].Cement and Concrete Research,2007(37):47-53.
【5】Sang-Hun Han.Influence of diffusion coefficient on chloride ion penetration of concrete structure[J].Construction and Building Materials,2007(21):370-378.
【6】余红发,孙伟,鄢良慧,等.混凝土使用寿命预测方法的研究Ⅰ-理论模型[J].硅酸盐学报,2002,30(6):686-690.
【7】Martin-Perez B,Zibara H,Hooton R D,et al.A study of the effect of chloride binding on service life predictions[J].Cement and Concrete Research,2000(30):1215-1223.
【8】Mohammed T U,Hamada H.Relationship between free chloride and total chloride contents in concrete[J].Cement and Concrete Research,2003(33):1487-1490.
【9】刘芳,金伟良,张奕.实际混凝土结构中氯离子结合理论对比分析[J].新型建筑材料,2007(6):13-16.
【10】Reddy B,Glass G K,Lim P J,et al.On the corrosion risk presented by chloride bound in concrete[J].Cement & Concrete Composites,2002(24):1-5.
【11】Guillem de Vera,Miguel A Climent,Estanislao Viqueira,et al.A test method for measuring chloride diffusion coefficients through partially saturated concrete.Part II:The instantaneous plane source diffusion case with chloride binding consideration[J].Cement and Concrete Research,2007(37):714-724.
【12】谢友均,陈书苹,龙广成.改善水泥浆体结合氯离子性能的试验研究[J].铁道科学与工程学报,2007,4(2):1-5.
【13】Dhir R K,Ei-Mohr M A K,Dyer T D.Developing chloride resisiting concrete using PFA[J].Cement and Concrete Research,1997,27(11):1633-1639.
【14】余红发,翁智财,孙伟,等.矿渣掺量对混凝土氯离子结合能力的影响[J].硅酸盐学报,2007,35(6):801-806.
【2】Elsener B,Angst U.Mechanism of electrochemical chloride removal[J].Corrosion Science,2007(49):4504-4522.
【3】Ki Yong Ann,Ha-Won Song.Chloride threshold level for corrosion of steel in concrete[J].Corrosion Science,2007(49):4113-4133.
【4】Byung Hwan Oh,Seung Yup Jang.Effects of material and environmental parameters on chloride penetration profiles in concrete structures[J].Cement and Concrete Research,2007(37):47-53.
【5】Sang-Hun Han.Influence of diffusion coefficient on chloride ion penetration of concrete structure[J].Construction and Building Materials,2007(21):370-378.
【6】余红发,孙伟,鄢良慧,等.混凝土使用寿命预测方法的研究Ⅰ-理论模型[J].硅酸盐学报,2002,30(6):686-690.
【7】Martin-Perez B,Zibara H,Hooton R D,et al.A study of the effect of chloride binding on service life predictions[J].Cement and Concrete Research,2000(30):1215-1223.
【8】Mohammed T U,Hamada H.Relationship between free chloride and total chloride contents in concrete[J].Cement and Concrete Research,2003(33):1487-1490.
【9】刘芳,金伟良,张奕.实际混凝土结构中氯离子结合理论对比分析[J].新型建筑材料,2007(6):13-16.
【10】Reddy B,Glass G K,Lim P J,et al.On the corrosion risk presented by chloride bound in concrete[J].Cement & Concrete Composites,2002(24):1-5.
【11】Guillem de Vera,Miguel A Climent,Estanislao Viqueira,et al.A test method for measuring chloride diffusion coefficients through partially saturated concrete.Part II:The instantaneous plane source diffusion case with chloride binding consideration[J].Cement and Concrete Research,2007(37):714-724.
【12】谢友均,陈书苹,龙广成.改善水泥浆体结合氯离子性能的试验研究[J].铁道科学与工程学报,2007,4(2):1-5.
【13】Dhir R K,Ei-Mohr M A K,Dyer T D.Developing chloride resisiting concrete using PFA[J].Cement and Concrete Research,1997,27(11):1633-1639.
【14】余红发,翁智财,孙伟,等.矿渣掺量对混凝土氯离子结合能力的影响[J].硅酸盐学报,2007,35(6):801-806.
相关信息
