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Test Protocol for Evaluating Grout Materials to Repair Water Leaks in Concrete Pipes
Grouts are used in the rehabilitation of various pipelines, particularly for leak control in cracked concrete infrastructures including all types of wastewater and storm water pipelines. Hence there was a need to develop test protocols to evaluate the performance of various types of grouts based on their applications. The aim of the controlled testing program, which was approved by the EPA, was to evaluate the performance of grouting materials used in the rehabilitation of cracked concrete structures, including pipes, to quantify the infiltration using a combination of model and laboratory tests at the Center for Innovative Grouting Materials and Technology (CIGMAT). A combination of grout and grout-substrate bonding with a simulated model test are used to evaluate grouts for leak control at repaired cracks in concrete. Grouts are characterized using working, physical, mechanical, and durability properties. To quantify the grout properties, several ASTM and CIGMAT test methods are used. The concrete crack repairs were simulated using concrete rings placed at selected distance apart. Grouted cracks are tested to 34 kPa (5 psi) water pressure, after subjecting the repaired joints to wet-dry cycles to quantify the effective reduction in water infiltration. Test results of a polyurethane grout was used develop a new parameter to define leakage in the repaired joint. The controlled verification test program approved by the EPA will be of assistance to manufacturers, suppliers, engineers, and owners in evaluating the grouts used for cracked concrete repairs.
Test Protocol for Evaluating Grout Materials to Repair Water Leaks in Concrete Pipes
Grouts are used in the rehabilitation of various pipelines, particularly for leak control in cracked concrete infrastructures including all types of wastewater and storm water pipelines. Hence there was a need to develop test protocols to evaluate the performance of various types of grouts based on their applications. The aim of the controlled testing program, which was approved by the EPA, was to evaluate the performance of grouting materials used in the rehabilitation of cracked concrete structures, including pipes, to quantify the infiltration using a combination of model and laboratory tests at the Center for Innovative Grouting Materials and Technology (CIGMAT). A combination of grout and grout-substrate bonding with a simulated model test are used to evaluate grouts for leak control at repaired cracks in concrete. Grouts are characterized using working, physical, mechanical, and durability properties. To quantify the grout properties, several ASTM and CIGMAT test methods are used. The concrete crack repairs were simulated using concrete rings placed at selected distance apart. Grouted cracks are tested to 34 kPa (5 psi) water pressure, after subjecting the repaired joints to wet-dry cycles to quantify the effective reduction in water infiltration. Test results of a polyurethane grout was used develop a new parameter to define leakage in the repaired joint. The controlled verification test program approved by the EPA will be of assistance to manufacturers, suppliers, engineers, and owners in evaluating the grouts used for cracked concrete repairs.
Test Protocol for Evaluating Grout Materials to Repair Water Leaks in Concrete Pipes
Vipulanandan, C. (author) / Kazez, M.B. (author)
Pipelines 2014 ; 2014 ; Portland, Oregon
Pipelines 2014 ; 290-298
2014-07-30
Conference paper
Electronic Resource
English
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