通过测试磷酸钾镁水泥(MKPC)水化体系的水化放热特性和抗压强度发展,分析不同龄期MKPC硬化体的固相组成和微观结构,研究MKPC水化体系的微结构演化过程.结果表明:MKPC水化体系水化反应速度快且大量水化热在水化反应初期集中释放,水化反应主要在水化开始3d完成,水化产物主要为含6个结晶水的MKP,还存在一些低结合水的水化产物；MKPC水化体系中快速水化生成的水化产物晶体缺陷多和稳定性差,生长过程中会产生较大的内应力,其中低结合水的水化产物还会逐步吸收空气中的水份转化为MKP,均会造成MKPC硬化体结构的劣化,即随水化龄期增长,硬化体出现较多的裂缝和缺陷；造成MKPC硬化体抗压强度在水化开始3d发展迅速,之后抗压强度出现倒缩,但随龄期延长又逐步恢复并增长.
参考文献
| [1] | Seehra S S;Saroj G;Satander K .Rapid setting magnesium phosphate cement for quick repair of concrete pavements-characterisation and durability aspects[J].Cement and Concrete Research,1993,23(02):254-266. |
| [2] | Q.Yang;X.Wu .Factors influencing properties of phosphate cement-based binder for rapid repair of concrete[J].Cement and Concrete Research,1999(3):389-396. |
| [3] | Q. Yang;B. Zhu;X. Wu .Characteristics and durability test of magnesium phosphate cement-based material for rapid repair of concrete[J].Materials and structures,2000(228):229-234. |
| [4] | Quanbing Yang;Beirong Zhu .Properties and applications of magnesia-phosphate cement mortar for rapid repair of concrete[J].Cement and Concrete Research,2000(11):1807-1813. |
| [5] | 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(02):196-198. |
| [6] | Quanbing Yang;Shuqing Zhang;Xueli Wu .Deicer-scaling resistance of phosphate cement-based binder for rapid repair of concrete[J].Cement and Concrete Research,2002(1):165-168. |
| [7] | Jean Pera;Jean Ambroise .Fiber-reinforced Magnesia-phosphate Cement Composites for Rapid Repair[J].Cement & concrete composites,1998(1):31-39. |
| [8] | Singh D;Wagh A S .Phosphate bonded structural product from high volume wastes[P].US 5,846,894,1998-12-8. |
| [9] | Wagh A;Jeong S Y;Singh D.High strength phosphate cement using industrial by-product ashes[A].,1997:542-533. |
| [10] | 丁铸,李宗津.早强磷硅酸盐水泥的制备和性能[J].材料研究学报,2006(02):141-147. |
| [11] | Ding Z .Research of magnesium phosphosilicate cement[D].香港:香港科技大学,2005. |
| [12] | Z. DING;Z. LI .Effect of aggregates and water contents on the properties of magnesium phospho-silicate cement[J].Cement & concrete composites,2005(1):11-18. |
| [13] | 李鹏晓,杜亮波,李东旭.新型早强磷酸镁水泥的制备和性能研究[J].硅酸盐通报,2008(01):20-25. |
| [14] | 李东旭,李鹏晓,冯春花.磷酸镁水泥耐水性的研究[J].建筑材料学报,2009(05):505-510. |
| [15] | 杨建明,钱春香,荀勇,仲跃,阎晓波.玻璃纤维增强磷酸镁水泥复合材料的耐久性[J].建筑材料学报,2009(05):590-594. |
| [16] | 杨建明,周启兆,钱春香,焦宝祥,阎晓波.新拌磷酸镁水泥浆体流动性测试方法及其流动特性研究[J].硅酸盐通报,2009(03):624-629. |
| [17] | 陈兵,雒亚莉,王菁.磷酸镁水泥性能试验研究[J].水泥,2010(07):14-18. |
| [18] | 杨建明,钱春香,张青行,焦宝祥,阎晓波.原料粒度对磷酸镁水泥水化硬化特性的影响[J].东南大学学报（自然科学版）,2010(02):373-379. |
| [19] | Yang J;Qian C .Effect of borax on hydration and hardening properties of magnesium and potassium phosphate cement pastes[J].Journal of Wuhan University of Technology(Materials Science Edition),2010,25(04):613-618. |
| [20] | Qian C x;Yang J M .The effect of disodium hydrogen phosphate on hydration and hardening of magnesium potassium phosphate cement[J].Journal of Materials in Civil Engineering,2011,23(10):1405-1411. |
| [21] | Sugama T;Kukacka L E .Magnesium monophosphatecement derived from diammonium phosphate solutions[J].Cement and Concrete Research,1983,13(03):407-416. |
| [22] | Sugama T;Kukacka L E .Characteristics of Magnesium monophosphate cements derived from ammonium phosphate solutions[J].Cement and Concrete Research,1983,13(03):499-506. |
| [23] | Abdelrazig B E I;Sharp J H;EI-Jazairi B .The chemical composition of mortars made from magnesia-phosphate cement[J].Cement and Concrete Research,1988,18:415-425. |
| [24] | Abdelrazig B E I;Sharp J H;El-Jazairi B .The microstructure and mechanical properties of mortars made from magnesia-phosphate cement[J].Cement and Concrete Research,1989,19:247-258. |
| [25] | Sarkar A K .Hydration/dehydration characteristics of struvite and dittmarite pertaining to magnesium ammonium phosphate cement systems[J].Journal of Materials Science,1991,26:2514-2518. |
| [26] | 姜洪义,周环,杨慧.超快硬磷酸盐修补水泥水化硬化机理的研究[J].武汉理工大学学报,2002(04):18-20. |
| [27] | Arun S. Wagh;Seung Y. Jeong .Chemically Bonded Phosphate Ceramics: I, A Dissolution Model of Formation[J].Journal of the American Ceramic Society,2003(11):1838-1844. |
| [28] | Zhang S Y;Shi H S;Huang S W et al.Dehydration characteristics of struvite-K pertaining to magnesium potassium phosphate cement system in non-isothermal condition[OL].http://www.akademiai.com/content/b82q02 0843n06158,2012-01-09. |
| [29] | Stefan Graeser;Walter Postl;Hans-Peter Bojar;Peter Berlepsch;Thomas Armbruster;Thomas Raber;Karl Ettinger;Franz Walter .Struvite-(K), KMgPO4·6H2O, the potassium equivalent of struvite – a new mineral[J].European journal of mineralogy,2008(4):629-633. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%