Chloride diffusion property of recycled aggregate concrete treated with water repellent agents-silane

Yaguang Zhu, Jianguo Dai, Qiuyi Li

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Silane-base water repellent agents can significantly suppress the capillary water absorption of concrete and consequently improve the durability of the concrete and protects the internal steel reinforcement. This paper presents test result on chloride diffusion property of natural and recycled aggregate concrete externally and internally treated with silane-based water repellent agents based on the ASTM C1202 test method. The effects of concrete cracks on the chloride diffusion property were also investigated. After the tests, the impregnation depth of silane into the natural and recycled aggregate concrete, the total charges passing the testing samples and penetration depth of chloride during the testing period were determined. It was found that, for both cracked and uncracked concrete, externally treated natural and recycled aggregate concrete performed better than internally treated ones. The water repellent treatment method is more effective for recycled aggregate concrete than natural aggregate concrete because a deeper impregnation depth can be achieved in the former case.
Original languageEnglish
Title of host publicationAdvances in Building Materials
Pages755-761
Number of pages7
DOIs
Publication statusPublished - 17 Jan 2011
Event2011 International Conference on Structures and Building Materials, ICSBM 2011 - Guangzhou, China
Duration: 7 Jan 20119 Jan 2011

Publication series

NameAdvanced Materials Research
Volume168-170
ISSN (Print)1022-6680

Conference

Conference2011 International Conference on Structures and Building Materials, ICSBM 2011
CountryChina
CityGuangzhou
Period7/01/119/01/11

Keywords

  • Chloride penetration
  • Concrete
  • Crack
  • Recycled aggregate
  • Silane
  • Water repellent agent

ASJC Scopus subject areas

  • Engineering(all)

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