Title:
Method of Repairing Concrete Slabs Using High-Performance Concrete
Author(s):
N. Maruyama, M. Yurugi, H. Konishi, and Y. Murahashi
Publication:
Symposium Paper
Volume:
149
Issue:
Appears on pages(s):
289-310
Keywords:
aggregates; high-performance concretes; hysteresis; moisture; mortars (material); panels; repairs; slabs; slump; Construction
DOI:
10.14359/4255
Date:
10/1/1994
Abstract:
When a damaged concrete slab is repaired, new concrete will generally be placed in a downward direction. Form panels must be set up first under the damaged concrete slab, and then concrete must be placed between the form panels and the damaged slab. However, compaction by vibrator is needed in most concrete (slump: 8 to 21 cm), and therefore concrete placement under a damaged slab that needs repair is impossible realistically. A repair method using high-performance concrete without vibration or compaction was developed. The method was applied to the repair of concrete slabs that had been damaged by heat. It was confirmed that this repair method was easier and that repair was possible while the slab was in use. In addition, the costs and construction period were reduced greatly by this repair method.