Mobile QR Code QR CODE

Journal of the Korea Concrete Institute

J Korea Inst. Struct. Maint. Insp.
  • Indexed by
  • Korea Citation Index (KCI)

Journal Search

PDF INFO
Title Crack Example and Crack Control Method of Very-Early Strength Latex-Modified Concrete
Authors 최판길 ; 윤경구 ; 이봉학
Page pp.173-180
ISSN 1226-6205
Keywords 종방향 균열 ; 망상형 균열 ; 횡방향 균열 ; 초속경 라텍스개질 콘크리트 Longitudinal crack ; Map crack ; Transverse crack ; Very-early strength latex-modified concrete
Abstract Very-early strength latex-modified concrete(below ; VES-LMC) was developed for possible early-opening-to-traffic after overlay of bridge deck concrete. The purpose of this study is to analyze the cause of map, transverse and longitudinal cracking in VES-LMC and to provide a control method for minimizing occurrence of cracking. The proposed prevention method against map and transverse cracking was verified by field data. VES cement was modified as the unit cement content was reduced from 390kg/m3 to 360kg/m3. The maximum size of coarse aggregate was increased from 13mm to 19mm. The wire mesh and steel fiber were adopted in concrete mixture. From the results, the proposed prevention method against map and transverse cracking was verified since structural cracking was not occurred until 3 years after overlay.