海水暴露环境下带裂缝混凝土的表面防水处理

Translated title of the contribution: Water repellent treatment on surface of cracked concrete under seawater exposure environment

Peng Zhang, Jianguo Dai, Tie Jun Zhao, Folker H. Wittmann, S. Hartmann

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)

Abstract

Based on 770 seawater wet/dry cyclic exposure test, water repellent treatment(WRT) with use of four different types of silane was applied on the surface of cracked concrete to study the influence of WRT on water and Cl-penetration. Results show that for the concrete not cracked, WRT restrains penetration of water and Cl-into concrete effectively. If WRT is properly applied on cracked concrete surface even with the crack width of 0.2 mm, special silane treatment can still establish an effective Cl-barrier. While for concrete surface treated previously, when crack occurs again, the efficiency of WRT is highly sensitive to the magnitude of crack width. Therefore, it is necessary to evaluate carefully the state of cracks in concrete before applying silane-based surface water repellent treatment on reinforced concrete structures in order to ensure the efficiency of the treatment.
Translated title of the contributionWater repellent treatment on surface of cracked concrete under seawater exposure environment
Original languageChinese (Simplified)
Pages (from-to)214-218
Number of pages5
Journal建筑材料学报 (Journal of building materials)
Volume12
Issue number2
Publication statusPublished - 1 Apr 2009

Keywords

  • Cl penetration -
  • Crack
  • Hydrophobic layer
  • Surface water repellent treatment
  • Water absorption
  • Wet/dry cycles of seawater

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials

Cite this