A Basic Study on the Enhancement of Compactness and Durability of Concrete using Moist-curing Mats
By Hiroshi Nonome, Yoshinori Gondai, Masayuki Fujii and Takashi Sugawara
Concrete Research and Technology
Vol.20, No.1, Jan. 2009 (Issue 49)
- Synopsis:
- A moist-curing mat with a high water holding capacity was developed exclusively for moist curing on a horizontal plane. A moist-curing mat was laid over a specimen installed outdoors under a condition close to that for a real structure for comparison with a specimen on which water was sprayed and with another that was not cured. Studies were made to check the enhancement of surface wetness and strength, change in surface pore structure and enhancement of durability. As a result, it was found that laying the newly developed moist-curing mats could provide higher relative humidity near the surface, better rebound hammer test results, reduced pore volume and smaller pore size at a depth of 0 to 10 mm, greater resistance to freezing and thawing, and reduced depths of carbonation and chloride penetration than spraying water on concrete or not curing concrete.
- Keywords:
- moist curing, moist-curing mats, rebound, pore structure, freezing and thawing, carbonation, chloride penetration
