* v෪ᬱᵝݡ⦺Ʊ ☁༊Ŗ⦺ŝ ၶᔍŝᱶ ([email protected])
Received February 12 2013, Revised March 12 2013, Accepted March 15 2013
Copyright ⵑ 2013 by the Korean Society of Civil Engineers
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0)
ǣǣȀȀǤǤȀͳͲǤͳʹͷʹȀ ǤʹͲͳ͵Ǥ͵͵Ǥ͵Ǥͳͳͷ͵ Ǥ ǤǤ
⽿ⴶⵣ#⇍#ᇂⴶⵣ#⢢㮖⇧≓⮎#ἶ#⢛#㔖㘪Ὢ㡶#ᤥ⫊ⱮᏮⴖ#
⌾ᇓᦂ#␂ጎ#ኞ
ઽָ ȵଲ
Kim, Young Kyu*, Lee, Seung Woo**
Comparative Study on the Bond Strength between Direct Tensile Test and Indirect Tensile Test for Bonded Concrete Overlay
ABSTRACT
Bonded concrete overlay is a favorable maintenance method since the material properties are similar to existing concrete pavements.
In addition, bonded concrete overlay has advantage of structural performance based on being bonded together, both for the overlay layer and the existing pavement which perform as one monolithic layer. Therefore, it is important to have a suitable bond strength criteria for long term performance of bonded concrete overlay. This study aimed to investigate the affecting of bond strength on various bond characteristics, and to compare the bond strength between direct tensile test and indirect tensile test due to various conditions such as overlay materials, compressive and flexure strength of existing pavement, and deterioration status of existing pavement. As a result of this study, bond strength occurred by both of direct and indirect tensile test due to monotonic load is highly correlated such as coefficient of determination of 0.75 and P-value of 0.002. However, bond strength by indirect tensile test was relatively higher than bond strength by direct tensile test. It was known that correlation between direct and indirect tensile test was possible to use the characteristics analysis of bond fatigue behavior based on bond strength due to cyclic load which can simulate real field behavior of bonded concrete overlay.
Key words : Bonded concrete overlay, Bond strength, Direct tensile test, Indirect tensile test
Ⅹಾ
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ᰆ⊖ᯕ᪥ᱥᇡ₊ᮥ☖⦽ᯝℕ⪵Ñ࠺ᮥ⦹ᩍᬑᙹ⦽Ǎ᳑ᱢᖒ܆ᮥ⪶ᅕ⧁ᙹᯩ݅. ᕽᱲ₊⎹Ⓧญ✙߈ᥭᬑʑ᮹ᰆʑŖᬊᖒᮥ᭥⦹ᩍ
ᱢᱩ⦽ᇡ₊vࠥʑᵡᮥ⪶ᅕ⦹۵äᯕๅᬑᵲ⦹݅. ᅙᩑǍᨱᕽ۵݅᧲⦽ᇡ₊✚ᖒᯕᇡ₊vࠥᨱၙ⊹۵ᩢ⨆ᮥŁₑ⦹Łᯱ⦹ᩡᮝ໑, ߈ ᥭᬑʑᰍഭ, ʑ᳕⡍ᰆ᮹ᦶ⇶vࠥၰ⮉vࠥᄡ⪵, ʑ᳕⡍ᰆ᮹ᩕ⪵ᔢ┽॒݅᧲⦽ᇡ₊᳑Õᨱݡ⦽Ḣᱲᯙᰆၰeᱲᯙᰆᝅ⨹ᮥᝅ⦹ᩍࠥ
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ࠥ⣩ḩšญʑᵡᯕǍࡽ݅. Peter M. Semen ॒(2005)᮹ᩑǍᨱ
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