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ENVIRONMENTAL TECHNOLOGY VERIFICATION PROGRAM: PROTOCOL FOR THE VERIFICATION OF GROUTING MATERIALS FOR INFRASTRUCTURE REHABILITATION AT THE UNIVERSITY OF HOUSTON - CIGMAT
NSF International, AND GIGMAT. ENVIRONMENTAL TECHNOLOGY VERIFICATION PROGRAM: PROTOCOL FOR THE VERIFICATION OF GROUTING MATERIALS FOR INFRASTRUCTURE REHABILITATION AT THE UNIVERSITY OF HOUSTON - CIGMAT. U.S. Environmental Protection Agency, Washington, DC, 600/R-04/183, 2004.
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This protocol was developed under the Environmental Protection Agency's Environmental Technology Verification (ETV) Program, and is intended to be used as a guide in preparing laboratory test plans for the purpose of verifying the performance of grouting materials used for infrastructure rehabilitation. More specifically, materials such as acrylamides, acrylic, polyurethane or other chemical substances are used to control infiltration and inflow (I/I) of either stormwater or wastewater into residential collection systems. These materials have been commonly used for leak control in below-grade wet wells and holding tanks, manholes, sewer and storm lines. Other uses include cracked retaining walls and other underground structures. The primary goal of in-situ grouting is to return the structure to an acceptable working condition. However, there is no systematic method for evaluating the performance of grout materials under service conditions. This protocol establishes a comprehensive approach for testing grout materials for leak control applications in both old and new wastewater collection systems and other concrete repairs. The protocol includes the application of testing procedures developed by the American Society of testing and Materials (ASTM), and those developed by the Center for Innovative Grouting Materials and Technology, at the University of Houston. The protocol addresses the requirements for testing facilities, as well as experimental design; Sample preparation; physical and mechanical properties testing, and model tests. Also included are requirements for developing a quality assurance project plan, requirements for data reporting and assessments, and safety considerations. The protocol was developed by a technology panel representing municipal engineers, engineering consulting firms, and grout manufacturers working with the University of Houston and the National Sanitation Foundation, International (NSF), EPA's partner organization for the ETV Program's Water Quality Protection Center.