콘크리트 덧씌우기 전후 비교조사에 따른 덧씌우기공법의 지지력 및 하중전달 특성 연구 = Structural Capacity and Load Transfer Characteristics of Concrete Overlay

다국어 초록 (Multilingual Abstract)

A 290m 2-lane experimental concrete overlay was constructed in 88 Express Highway to investigate it's feasibility in Korea. The test section consists of both bonded and unbonded type overlays. Pavement condition of the existing slab was surveyed before overlay, and construction feasibility of concrete overlay was checked during construction. After overlay, delamination, crack, deflection(using FWD), and load transfer at various temperature conditions have been measured periodically. Findings from the study can be summarized as follows. (1) The overlays performed successfully during at least 1 year after construction, (2) Overlay reduced deflection by 47% in bonded overlay section and by 57% in unbonded overlay section, (3) Unbonded overlay showed better load transfer than bonded overlay, (4) Joints transfer dowel bar showed better load transfer than those without dowel bar, and (5) Load transfer efficiency varied with temperature conditions.

목차 (Table of Contents)

• 1.서론
• 2.콘크리트 덧씌우기의 종류
• 2.1 접착식 콘크리트 덧씌우기(BCO)
• 2.2 비접착식 콘크리트 덧씌우기(UBCO)
• 3.시험시공 및 계측
• 3.1 덧씌우기전 조사
• 3.2 시험시공
• 3.3 계측 조사 및 분석
• 4.결론