STUDY ON HIGH PERFORMANCE GROUTS'RESISTANCE TO CHLORIDE ION EROSION
-
摘要: 试验研究了水灰比对灌浆料各项性能的影响,分析外加剂改善灌浆料各项性能的作用机理,并从总氯离子含量、电通量和氯离子扩散系数三个方面对灌浆料的抗氯离子侵蚀性能进行研究。结果表明:配制的灌浆料具有零泌水、零收缩、大流动性、高抗氯离子渗透性和低水灰比(0.27~0.30)等性能;根据Nernst-Einstein方程推出氯离子扩散系数与电通量呈正比关系;降低水灰比可大大降低灌浆料的电通量、提高灌浆料的抗氯离子渗透性能。Abstract: The influence of water-cement ratio on performance of grouts is studied,the mechanism of admixture to improve performance of grouts are analysed and the grouts'resistance to chloride ion erosion is studied by total chloride ion content,electric charge and chloride ion diffusion coefficient.The results show that high performance grouts with zero bleeding,no shrinking,high flowability,high ability to resist chloride ion penetration and low water-cement ratio(0.27~0.30) are developed;the direct ratio relationship between electric charge and chloride ion diffusion coefficient is induced according to Nernst-Einstein equation.Electric charge can be reduced and grouts' ability to resist chloride ion penetration can be improved largely by reducing water-cement ratio.
-
[2] ASTM C939-97,Standard Test Method for Flow of Grouts for Preplaced-Aggregate Concrete (Flow Cone Method) Grouting Specifications Committee.Post Tensioning Grouts Specifications.America:Grouting Specifications Committee,2002 [3] ASTM C940-98a,Standard Test Method for Expansion and Bleeding of Freshly Mixed Grouts for Preplaced-Aggregate Concrete in the Laboratory [4] ASTM C1090-96,Standard Test Method for Measuring Changes in Height of Cylindrical Specimens from Hydraulic-Cement Grouts [5] ASTM C1202-97,Standard Test Method for Electrical Indication of Concrete's Ability to Resist Chloride Ion Penetration [6] PTI Committee on Grouting Specifications.Guide Specification for Grouting of Post-Tensioned Structures.America:Post-Tensioning Institute,2003 [7] Florida Department of Transportation.FDOT Standard Specifications.America:Florida Department of Transportation,2002 [8] Ramaehandran V S,Feldman R F,Beaudoin J J.Micrestructure of Cement Poster.Concrete Science,1981,1-3 [9] 路新瀛.Nernst-Einstein方程在混凝土中的应用.1996年度攀登B研究报告.清华大学土木工程系,1996 [10] 李翠玲,路新瀛,张海霞.确定氯离子在水泥基材料中扩散系数的快速试验方法.工业建筑,1998,28(6):41-43 期刊类型引用(14)
1. 张友顺. 型钢混凝土抗拉柱侧向挠度研究. 长江工程职业技术学院学报. 2022(01): 1-3+8 . 百度学术
2. 张鹏,覃宣盛,邓宇,桂金洋,花东升. 低周反复荷载下预应力型钢混凝土偏心受拉构件延性分析. 工程抗震与加固改造. 2022(03): 47-55+64 . 百度学术
3. 张鹏,花东升,邓宇. 低周反复荷载下预应力CFRP筋-型钢/混凝土偏拉构件抗裂性能试验. 复合材料学报. 2022(08): 4017-4027 . 百度学术
4. 邓宇,孙仁中,张鹏,李真真. 拉-弯-剪复合作用下型钢混凝土柱抗震性能研究及损伤量化分析. 振动与冲击. 2021(04): 195-204 . 百度学术
5. 张鹏,桂金洋,邓宇,沈民合,孙飞,赵晓冬. 偏心受拉作用下预应力CFRP筋-型钢混凝土构件抗裂试验. 复合材料学报. 2021(03): 920-931 . 百度学术
6. 张鹏,桂金洋,邓宇,覃宣盛,花东升. SRC偏心受拉构件抗震性能试验研究. 工程抗震与加固改造. 2021(01): 69-75 . 百度学术
7. 张鹏,李真真,邓宇,孙仁中. 型钢混凝土柱在拉-弯-剪复合受力下的延性分析. 混凝土. 2021(03): 48-53+58 . 百度学术
8. 张友顺,张友敬,武曦睿. 基于ANSYS的SRC柱抗拉性能分析. 长江工程职业技术学院学报. 2021(02): 1-4 . 百度学术
9. 史红伟,李慧,王晓磊. 不同型钢翼缘宽度和型钢位置对SRC组合板承载力影响有限元分析. 邯郸职业技术学院学报. 2021(02): 36-41 . 百度学术
10. 张友顺,王立明,张友敬. 型钢混凝土抗拉柱裂缝研究. 工程建设. 2021(10): 61-65 . 百度学术
11. 邓宇,武晓彤,张鹏. 预应力型钢混凝土柱偏心受拉性能试验研究. 建筑结构学报. 2019(05): 115-123 . 百度学术
12. 陈晓菁,程少彬. 钢骨混凝土拉弯工况下承载力计算研究. 广东土木与建筑. 2019(06): 24-26 . 百度学术
13. 邓宇,武晓彤,张鹏. 无黏结预应力型钢混凝土偏拉构件裂缝控制试验研究及计算方法. 工业建筑. 2019(08): 185-189+16 . 本站查看
14. 吴帮,王泽曦,申波,马克俭,赵庆阳,张晓辉,赵啸峰. 型钢混凝土组合空腹夹层板结构静动力性能分析. 建筑结构. 2017(04): 81-86 . 百度学术
其他类型引用(7)
-

计量
- 文章访问数: 91
- HTML全文浏览量: 6
- PDF下载量: 58
- 被引次数: 21