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Open AccessArticle

Application of Hydrophilic Silanol-Based Chemical Grout for Strengthening Damaged Reinforced Concrete Flexural Members

1
Department of Architectural Engineering, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul 130-743, Korea
2
School of Engineering, University of Aberdeen, 361 Fraser Noble Building, King's College, Aberdeen AB24 3UE, UK
3
Department of Architectural Engineering, Korea National University of Transportation, 50 Daehak-ro Chungju-si, Chngbuk 380-702, Korea
*
Author to whom correspondence should be addressed.
Materials 2014, 7(6), 4823-4844; https://doi.org/10.3390/ma7064823
Received: 28 February 2014 / Revised: 26 March 2014 / Accepted: 13 June 2014 / Published: 23 June 2014
(This article belongs to the Special Issue Construction Materials)
In this study, hydrophilic chemical grout using silanol (HCGS) was adopted to overcome the performance limitations of epoxy materials used for strengthening existing buildings and civil engineering structures. The enhanced material performances of HCGS were introduced, and applied to the section enlargement method, which is one of the typical structural strengthening methods used in practice. To evaluate the excellent structural strengthening performance of the HCGS, structural tests were conducted on reinforced concrete beams, and analyses on the flexural behaviors of test specimens were performed by modified partial interaction theory (PIT). In particular, to improve the constructability of the section enlargement method, an advanced strengthening method was proposed, in which the precast panel was directly attached to the bottom of the damaged structural member by HCGS, and the degree of connection of the test specimens, strengthened by the section enlargement method, were quantitatively evaluated by PIT-based analysis. View Full-Text
Keywords: strengthening; HCGS; partial interaction; flexural behavior; silanol strengthening; HCGS; partial interaction; flexural behavior; silanol
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Ju, H.; Lee, D.H.; Cho, H.-C.; Kim, K.S.; Yoon, S.; Seo, S.-Y. Application of Hydrophilic Silanol-Based Chemical Grout for Strengthening Damaged Reinforced Concrete Flexural Members. Materials 2014, 7, 4823-4844.

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