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SO24 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.
参考文献
| [1] | Paul Brown;James Bothe Jr .CaO-AI_2O_3-CaCI_2-H_2O at 23+ -2 deg C and the mechanisms of chloride binding in concrete[J].Cement and Concrete Research,2004(9):1549-1553. |
| [2] | B. Elsener;U. Angst .Mechanism of electrochemical chloride removal[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2007(12):4504-4522. |
| [3] | Ki Yong Ann;Ha-Won Song .Chloride threshold level for corrosion of steel in concrete[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2007(11):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(1):47-53. |
| [5] | Sang-Hun Han .Influence of diffusion coefficient on chloride ion penetration of concrete structure[J].Construction and Building Materials,2007(1):370-378. |
| [6] | 余红发,孙伟,鄢良慧,麻海燕.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(06):686-690. |
| [7] | 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(06):13-17. |
| [8] | B.Reddy;G.K.Glass;P.J.Lim .On the corrosion risk presented by chloride bound in concrete[J].Cement & concrete composites,2002(1):1-5. |
| [9] | Guillem de Vera;Miguel A. Climent;Estanislao Viqueira .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(5):714-724. |
| [10] | 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(02):1-5. |
| [11] | 余红发,翁智财,孙伟,陈浩宇,张金花.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(06):801-806. |
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