IN-SITU EVALUATION OF THE EFFECTS OF A CONTROLLED PERMEABILITY FORMWORK ON PROPERTIES OF NEAR SURFACE CONCRETE
-
Published:2002
P A Muhammed Basheer, Adrian E Long, G I Barry Rankin, 2002. "IN-SITU EVALUATION OF THE EFFECTS OF A CONTROLLED PERMEABILITY FORMWORK ON PROPERTIES OF NEAR SURFACE CONCRETE", Innovations and Developments In Concrete Materials And Construction: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9–11 September 2002, Ravindra K. Dhir, Peter C. Hewlett, Laszlo J. Csetenyi
Download citation file:
The durability of reinforced concrete structures can be improved by enhancing the quality of the concrete cover. Recent investigations have indicated that the properties of the concrete cover can be improved by using a controlled permeability formwork (CPF) liner, which removes the surplus mixing water and entrapped air from the fresh concrete. Since 1993, Queen's University has carried out numerous investigations on the performance of concrete cast with CPF, one of which consisted of studying the in-situ performance when used for a bridge pier. The air permeability, sorptivity, depth of carbonation and chloride penetration of concrete cast with CPF were compared with that cast with impermeable formwork. This paper reports the performance measured at different times up to seven years from construction and compares this with the lab-performance of the CPF.
INTRODUCTION
PROGRAMME OF INVESTIGATION
RESULTS AND DISCUSSION
CONCLUSIONS
ACKNOWLEDGEMENTS
REFERENCES
