|
Title |
Enhanced Durability Performance of High Early Strength Concrete for Early Traffic Opening
|
|
Keywords |
내구성; 조기교통개방; 섬유; 조기강도콘크리트; 초속경시멘트; 수축; durability; early traffic opening; fiber; high early strength concrete; regulated-set cement; shrinkage |
|
Abstract |
The internal or external restraint of thermal and dry shrinkage movements could thus generate tensile stresses in concrete pavement for early traffic opening. Restrained shrinkage and thermal stresses could produce microcracks in concrete which increase its permeability and accelerate its long-term deterioration under weathering and load effects. Fiber reinforced concrete is an effective approach to the control of microcrack and crack development under tensile stresses. This study aims at evaluation of the durability of high early strength concrete for early traffic opening and increase of service life. Three different types of regulated-set cement which recently has been used much in Korea were adopted. Fibers were added and their mixtures were compared with plain high early strength concrete mixture. The use of fibers increased durability performance of high early strength concrete using regulated-set cement than the corresponding plain mixtures.
|