Concrete Surface Quality Improvement Technique Using Highly Water Repellent Sealing Method
By K. Watanabe, G. Sakai, N. Sakata and T. Ishida
Concrete Journal, Vol.54, No.11, Nov. 2016
- Synopsis
- This paper introduces the features of a concrete surface quality improvement technique that consists in applying a highly water repellent thermoplastic resin sheet to the mold in advance, and leaving this thermoplastic resin sheet on the concrete surface during the long-term curing period that follows formwork removal, and it describes the improvements in concrete surface quality that can be obtained with this method. This method, which achieves wet curing over a long period using the free water in the concrete as curing water, can yield improvements in chloride transport resistance and other physical barrier properties, and thus durability, without reduction of the water-cement ratio. In addition to presenting various data related to quality improvement, this paper introduces case studies of application of this method to actual structures.
- Keywords:
- curing, durability, wet curing, moisture diffusion controlled curing, thermoplastic resin sheet, water replleuency, surface quality
