首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
干湿循环-硫酸盐侵蚀下矿物掺和料对混凝土耐久性的影响(英文)
作者:袁晓露 李北星 崔巩 赵尚传 周明凯  
单位:武汉理工大学 硅酸盐材料工程教育部重点实验室 交通部公路科学研究院  
关键词:矿物掺和料  耐久性  混凝土  干湿循环-硫酸盐侵蚀环境 
分类号:TU528.01
出版年,卷(期):页码:2009,37(10):1754-1759
DOI:
摘要:

研究了干湿循环-硫酸盐侵蚀耦合作用下,纯水泥混凝土、粉煤灰掺量10%和20%的粉煤灰混凝土及矿粉掺量15%和30%的矿粉混凝土的质量损失率、抗压强度和氯离子扩散系数的演变规律。采用X射线衍射、扫描电子显微镜、能谱分析研究了侵蚀后试件的微观形貌与物质元素组成。结果表明干湿循环-硫酸盐侵蚀耦合作用下混凝土性能发展分为2个阶段:即侵蚀初期性能的提高段与随后性能的劣化段;矿物掺和料的掺入不能改善混凝土的抗干湿循环-硫酸盐侵蚀性能。

redirect i dreamed my wife cheated on me unfaithful husband
redirect how to cheat why women cheat on men they love
printable coupons for cialis outbackuav.com coupon for free cialis
doxycycline doxycycline doxycycline
cialis coupon cialis coupon cialis coupon
sumatriptan side effects sumatriptan side effects sumatriptan side effects

The effect of mineral admixtures on the cyclic sulfate resistance of concrete was investigated.Concrete specimens with ordinary Portland cement or the cement with fly ash of 10% or 20% or ground blast furnace slag of 15% or 30%,were made and exposed to 250 cycles in the cyclic sulfate environment.The specimens properties(such as loss of mass,compressive strength and chloride ion diffusion coefficient) were measured.Microstructure and chemical component of the specimens were determined by X-ray diffraction,scanning electron microscopy and energy dispersive spectroscopy.The results show that the performance of concrete subjected to cyclic sulfate environment was developed by two stages:improvement stage and deterioration stage.It also indicates that the addition of mineral admixtures in concrete might not improve the cyclic sulfate resistance of concrete.

why do wife cheat on husband why men cheat how to cheat wife
why married men cheat on their wives click here women cheat on men
sumatriptan side effects sumatriptan side effects sumatriptan side effects
基金项目:
西部交通建设科技项目(200631822302-08)资助
作者简介:
women want men signs of unfaithful husband how do i know if my wife cheated
open reasons why married men cheat My husband cheated on me
bystolic copay card click bystolic coupon voucher
cialis discount coupons cialis 2015 coupon
参考文献:

[1] MINDESS S,YOUNG J F,DARWIN D. Concrete [M]. WU Keru. 2nd ed. Beijing: Chemical Industry Press,2004: 426-428. [2] SAHMARAN M,ERDEM T K,YAMAN I O. Sulfate resistance of plain and blended cements exposed to wetting-drying and heating- cooling environments [J]. Construct Build Mater,2007,21: 1771- 1778. [3] DEHWAH H A F. Effect of sulfate concentration and associated cation type on concrete deterioration and morphological changes in cement hydrates [J]. Construct Build Mater,2007,21: 29-39. [4] SUNIL KUMAR,KAMESWARA RAO C V S.. Strength loss in con- crete due to varying sulfate exposures [J]. Cem Concr Res,1995,25(1): 57-62. [5] CAO H T,BUCEA L.The effect of cement composition and pH of environment on sulfate resistance of portland cements and blendedcements [J]. Cem Concr Compos,1997,19: 161-171. [6] BOYD ANDREW J,MINDESS SIDNEY. The use of tension testing to investigate the effect of W/C ratio and cement type on the resistance of concrete to sulfate attack [J]. Cem Concr Res,2004,34: 373-377. [7] ESHMAIEL GANJIANA,HOMAYOON SADEGHI POUYAB. Effect of magnesium and sulfate ions on durability of silica fume blended mixes exposed to the seawater tidal zone [J]. Cem Concr Res,2005,35: 1332-1343. [8] QIAO Hongxia,HE Zhongmao. Study on the mechanics of ce- ment-based material in sulfate environment [J]. J Basic Sci Eng (in Chinese),2006,12(1): 69-76. [9] CARLOS RODRIGUEZ-NAVARRO,ERIC DOEHNE,EDUARDO SEBASTIAN. How does sodium sulfate crystallize- Implications for the decay and testing of building materials [J]. Cem Concr Res,2000,30: 1527-1534.

why do wife cheat on husband why wifes cheat how to cheat wife
open why do men cheat on their wife My husband cheated on me
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com