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Volume :25 Issue : 1 1998      Add To Cart                                                                    Download

Testing for engineering and durability properties of an epoxy mortar system

Auther : MOETAZ M. EL-HAWARY

 Civil Engineering Department Kuwait University P 0 Box 5969 Safat 13060 Kuwait

 ABSTRACT

Epoxy mortar systems are becoming a more widely used method of repair for reinforced: oncrete structures due to their high strength, rapid hardening and ease of application. The durability of some of these systems, however, is still in some doubt.

In this paper the engineering properties and durability of a particular type of repair mortar consisting of a two component epoxy mortar system, available in the market and meeting ASTM C881 specifications for epoxy resins, was investigated. The effect of sulphuric acid, sodium hydroxide and sodium chloride solutions at 40°C and 70°C on compressive strength and weight of the epoxy mortar was investigated for time durations up to 100 days. The compressive strength, tensile strength, flexural strength, bond strength and modulus of elasticity were also determined at 23°C and 40°C along with the water absorption for this type of r mortar. An increase in weight was observed at all ages. The change in the durability and engineering properties for the investigated type of epoxy mortar was found to be tolerable, except for temperatures close to 70°C where about a 40% reduction in compressive strength was observed.

 

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