[논문]콘크리트 구조물 단면복구공사 보수재료 품질기준개선

이일근; 김기환; 김홍삼; 윤성환; 김우석

doi:10.12652/ksce.2023.43.1.0009

콘크리트 구조물 단면복구공사 보수재료 품질기준개선
Revision of Repair Materials Performance Requirement for Concrete Structures 원문보기

KSCE Journal of Civil and Environmental Engineering Research = 대한토목학회논문집, v.43 no.1, 2023년, pp.9 - 20

이일근 (한국도로공사 도로교통연구원) , 김기환 (한국도로공사 도로교통연구원) , 김홍삼 (한국도로공사 도로교통연구원) , 윤성환 (한국도로공사 도로교통연구원) , 김우석 (충남대학교 토목공학과)

초록
AI-Helper

고속도로 콘크리트 구조물은 제설제 사용량 증가로 구조물의 열화가 가속되고 있어 성능회복을 위해 단면복구공사를 실시하고 있다. 하지만, 보수공사 이후 보수부위에 균열, 들뜸 및 부착성능 저하 등의 재손상이 나타나고 있다. 본 연구에서는 먼저 해외 기준을 분석하였고, 공용 중인 콘크리트 구조물의 현장조사, 실내실험, 폐교량에 대한 시험시공을 통해 균열 방지 및 부착성능향상을 위해 강화된 기준을 제시하였다. 요구성능이 충족되는 재료는 모두 적용이 가능하도록 성능기반의 품질기준을 제시하였고, 재료별 상이한 시험방법도 일관성 있는 시험결과 분석을 위해 콘크리트 시험법으로 통일하여 제시하였다. 고려된 품질기준은 하중 저항을 위해 역학특성 분야로는 압축강도, 휨강도, 부착강도 기준을 마련하였고, 체적안정성을 위해 길이변화율, 균열저항성, 열팽창계수, 탄성계수를 기준을 마련하였다. 제설염해에 대한 저항성을 위해 내구성능 분야로는 염분침투저항성과 동결융해저항성 기준을 제시하였다. 본 연구에 의해 제시된 콘크리트 보수재료의 기준은 국내의 단면복구공사 품질향상에 기여할 것으로 기대된다.

Abstract ▼ AI-Helper

For highway concrete structures, the deterioration of the structure is accelerated due to the increase in the use of deicing materials, and sectional repair work is being frequently carried out to restore performance. However, after the repair work, re-damage such as cracks, delamination, and poor bond performance is exhibited in the repaired sectional area. In this study, overseas repair material requirements were first analyzed, and present domestic requirements were improved repair material performance through field surveys of common concrete structures, laboratory experiments, and test construction on a disused concrete bridge. In addition, performancebased quality requirements were presented so that all materials that meet the required performance can be applied, and different test methods for each material were unified into concrete test methods for consistent test results analysis. The considered performance requirements were compression strength, bending strength, and bond strength for structural properties, and length change rate, crack resistance, thermal expansion coefficient, and elasticity coefficient were for dimensional behavior. For resistance to chloride penetration resistance and freeze-thaw resistance were presented as durability. The proposed requirements for concrete repair materials are expected to contribute to the improvement of the quality of concrete sectional repair work in Korea.

주제어

표/그림 (22)

그림 Fig. 1. Schematics of Concrete Deterioration Due to Chloride Permeation
그림 Fig. 2. Concrete Deterioration and Re-damaged Cases
표 Table 1. Classification of Repair Materials for Concrete Structure
표 Table 2. Repair Materials Used in Laboratory Tests
그림 Fig. 3. Trial Construction in Field Test
표 Table 3. Mix design for Repair Materials Used in Laboratory Tests
표 Table 4. Repair Materials Used in Field Tests
표 Table 5. Specimens Used in Trial Construction
그림 Fig. 4. Compressive Strength in Laboratory Test
표 Table 6. Polymer-modified Cement Mortar Material (KS F 4042, 2022)
표 Table 7. Comparison of Compressive Strength Requirement for Repair Materials
그림 Fig. 5. Flexural Strength Test
표 Table 8. Flexural Strength Test Comparison for Repair Materials
그림 Fig. 6. Bond Strength Comparison
표 Table 9. Comparison of Bond Strength Requirement for Repair Materials
표 Table 10. Comparison of Length Change Requirement for Repair Materials
표 Table 11. Length Change Test Comparison for Repair Materials
표 Table 12. Comparison of Cracking Resistance Requirement for Repair Materials
표 Table 13. Crack Resistance Test Comparison for Repair Materials
표 Table 14. Thermal Expansion Coefficient Test Comparison for Repair Materials
표 Table 15. Comparison of Elastic Modulus Requirement for Repair Materials
표 Table 16. Revision of Concrete Repair Materials Requirements

참고문헌 (34)

AASHTO T 334-08 (2020). Standard method of test for estimating？the cracking tendency of concrete, American Association of State？Highway and Transportation Officials (AASHTO), Washington？DC, USA.
AASHTO T 336-15 (2019). Standard method of test for coefficient？of thermal expansion of hydraulic cement concrete, American？Association of State Highway and Transportation Officials？(AASHTO), Washington DC, USA.
ACI (2013). Concrete repair manual, 4th Edition, American？Concrete Institute (ACI), Garmington Hills, Michigan, USA.
ACI 546.3R (2014). Guide to materials selection for concrete？repair, ACI Committee 546, American Concrete Institute (ACI),？Garmington Hills, Michigan, USA.
ASTM C1042 (1999). Standard test method for bond strength of？latex systems used with concrete by slant shear (Withdrawn？2008), American Society of Testing Materials (ASTM), West？Conshohocken, PA, USA.
ASTM C1404 (2003). Standard test method for bond strength of？adhesive systems used with concrete as measured by direct？tension (Withdrawn 2010), American Society of Testing？Materials (ASTM), West Conshohocken, PA, USA.
ASTM C1581 (2018). Standard test method for determining age at？cracking and induced tensile stress characteristics of mortar and？concrete under restrained shrinkage, USA, American Society for？Testing Materials (ASTM), West Conshohocken, PA.
ASTM C1583 (2020). Standard test method for tensile strength of？concrete surfaces and the bond strength or tensile strength of？concrete repair and overlay materials by direct tension (Pull-off？Method), American Society of Testing Materials (ASTM), West？Conshohocken, PA, USA.
ASTM C882 (2020). Standard test method for bond strength of？epoxy-resin systems used with concrete by slant shear, American？Society of Testing Materials (ASTM), West Conshohocken, PA,？USA.
CSA A23.2-6B (2014). Method of test to determine adhesion by？tensile load, Canadian Standard Association (CSA), Toronto,？ON, Canada.
EN 12617-4 (2002). Products and systems for the protection and？repair of concrete structures-Test methods - Part 4: Determination？of shrinkage and expansion, European Committee for Standardization;？European Standard (EN).
EN 13687-1 (2002). Products and systems for the protection and？repair of concrete structures-Test methods - Determination of？thermal compatibility - Part 1: Freez-thaw cycling with de-icing？salt immersion, European Committee for Standardization; European？Standard (EN).
EN 13687-2 (2002). Products and systems for the protection and？repair of concrete structures-Test methods - Determination of？thermal compatibility - Part 2: Thunder-shower cycling, European？Committee for Standardization; European Standard (EN).
EN 13687-4 (2002). Products and systems for the protection and？repair of concrete structures-Test methods - Determination of？thermal compatibility - Part 4: Dry thermal cycling, European？Committee for Standardization; European Standard (EN).
EN 1504 (2005). Products and systems for the protection and？repair of concrete structures-defintions, requirements, quality？control an evaluation of conformity, European Committee for？Standardization; European Standard (EN).
EN 1542 (2005). Products and systems for the protection and？repair of concrete structures-Test methods-Measurement of bond？strength by pull-off, European Committee for Standardization;？European Standard (EN).
EXCS 44 50 15 (2021). Cement concrete pavement construction,？korea expressway corporation (KEC), Gimcheon, Kyungbuk,？Republic of Korea (in Korean).
EXCS 44 99 30 (2021). Whole/partial section repair, Korea？Expressway Corporation (KEC), Gimcheon, Kyungbuk (in Korean).
ICRI 210.3R (2022). Guide for using in-situ tensile pulloff tests to？evaluate bond of concrete surface materials, International Concrete？Repair Institute (ICRI), St. Paul, Minnesota, USA.
ICRI 320.2R (2018). Guide for selecting and specifying materials？for repair of concrete surfaces, International Concrete Repair？Institute (ICRI), St. Paul, Minnesota, USA.
Jeong, Y. S., Lee, I. K., Min, G. H., Kim, K. H. and Kim, W. S.？(2023). "Removal area of deteriorated concretes for concrete？repairs." Journal of the Korea Concrete Institute, Vol. 35, No. 1？(in Korean).
KS F 2405 (2022). Standard test method for compressive strength of？concrete, Korea Agency for Technology and Standards (KATS),？Korea Standard Association (KSA), Seoul, Korea (in Korean).
KS F 2408 (2021). Standard test method for flexural strength of？concrete, Korea Agency for Technology and Standards (KATS),？Korea Standard Association (KSA), Seoul, Korea (in Korean).
KS F 2424 (2020). Standard test method for length change of？mortar and concrete, Korea Agency for Technology and Standards？(KATS), Korea Standard Association (KSA), Seoul, Korea (in？Korean).
KS F 2438 (2022). Standard test method for static modulus of？elasticity and poisson's ratio in compression of cylindrical concrete？specimens, Korea Agency for Technology and Standards (KATS),？Korea Standard Association (KSA), Seoul, Korea (in Korean).
KS F 2456 (2018). Standard test method for resistance of concrete？to rapid freezing and thawing, Korea Agency for Technology and？Standards (KATS), Korea Standard Association (KSA), Seoul,？Korea (in Korean).
KS F 2476 (2019). Standard test method for polymer-modified？cement mortar, Korea Agency for Technology and Standards？(KATS), Korea Standard Association (KSA), Seoul, Korea (in？Korean).
KS F 2608 (2022). Standard test method for measuring of linear？thermal expansion for building materials, Korea Agency for？Technology and Standards (KATS), Korea Standard Association？(KSA), Seoul, Korea (in Korean).
KS F 2711 (2022). Standard test method for resistance of concrete to chloride ion penetration by electrical conductance, Korea？Agency for Technology and Standards (KATS), Korea Standard？Association (KSA), Seoul, Korea (in Korean).
KS F 2762 (2021). Standard test method for the bond strength of？concrete repair and overlay materials by pull-off method, Korea？Agency for Technology and Standards (KATS), Korea Standard？Association (KSA), Seoul, Korea (in Korean).
KS F 4042 (2022). Polymer modified cement mortar for maintenance？in concrete structure, Korea Agency for Technology and？Standards (KATS), Korea Standard Association (KSA), Seoul,？Korea (in Korean).
KS F 4043 (2018). Epoxy resin martar for restoration in concrete？structure, Korea Agency for Technology and Standards (KATS),？Korea Standard Association (KSA), Seoul, Korea (in Korean).
KS F 4716 (2022). Cement filling compound for surface preparation,？Korea Agency for Technology and Standards (KATS), Korea？Standard Association (KSA), Seoul, Korea (in Korean).
Min, G. H., Lee, I. K., Jeong, Y. S. and Kim, W. S. (2021).？"Proposals for enhancing performance of repair of deteriorated？concrete structures." Journal of the Korea Concrete Institute,？Vol. 33, No. 6, pp. 579-587 (in Korean).

상세보기

저자의 다른 논문 :

표제어: PCR

동의어: Packet Collision Rate

용어 설명 출처 목록 (6)

용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증