Durability of concrete made with different water-reducing chemical admixtures in tidal environment

Tarek Uddin Mohammed, Hidenori Hamada

研究成果: Contribution to journalArticle査読

21 被引用数 (Scopus)

抄録

A detailed investigation on concrete specimens (100 mm diameter and 200 mm height) made with different chemical admixtures was carried out after 10 years of tidal exposure. Chemical admixtures include an air-entraining admixture (AEA) (vinsol), a water-reducing admixture (WRA) (lingosulfonate group), various high-range water-reducing and air-entraining admixtures (HRWRAEAs) (naphthalene, melamine, polycarboxyl, and amino-sulfonate group), and a drying shrinkage-reducing admixture (glycol ether plus amino alcohol derivatives). The specimens were tested for compressive strength, Young's modulus of elasticity, carbonation depths, chloride ingress, pore size distribution, electrochemical and physical evaluation of a steel bar's corrosion in concrete, examination,of steel-concrete interfaces, and mineralogy of the mortar portions of concrete. The naphthalene group of chemical admixture shows the best performance against strength development and chloride ingress prevention in concrete. Contrarily, the polycarboxyl group shows the least performance. The special method of casting concrete causes the formation of a good steel-concrete interface that prevents the initiation of corrosion 'even for a chloride concentration of more than 2% of cement mass.

本文言語英語
ページ(範囲)194-202
ページ数9
ジャーナルACI Materials Journal
100
3
出版ステータス出版済み - 5 2003
外部発表はい

All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 建築および建設
  • 材料科学(全般)

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