Repair and Strengthening of Reinforced Concrete Structures by Epoxy-Rubber Coatings

REPAIR AND STRENGTHENING OF REINFORCED CONCRETE STRUCTURES BY EPOXY-RUBBER COATINGS [10-25] 

Experimental research was performed on models of reinforced concrete beams (10 x 20 x 120 cm) with polymeric concrete layers. B 25 class concrete was used main longitudinal reinforcement of A-III class was used in the form of two 8-mm diameter rods and the 5-mm diameter stirrups of the same class arranged, so that destruction would be along normal sections. Epoxy-rubber compositions were used as covering layer materials. All compositions were made on ED-20 epoxy-based resin. Besides fiber glass-reinforced plastic glued by ED-20 compositions based on liquid rubbers, RubCon was used. The composition of the polymer layers and some of their mechanical characteristics are given in Table 6.3. 

Beam Content of Composites, Strength, Elasticity Tensile Thickness, 

RCIS Glass-reinforced polyether plastic glued by epoxy 22.3 1300 1.7 2 

RCIL EA-20-100 , PEPA-10 , DBFT -30 - crushed sand-91, quartz sand -218, crushed stone-450 7 9000 0.08 Variable 

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