The Mechanical Property Testing and Evaluation for Reinforced Cured-in-Place Pipe (CIPP) Composite Materials using Glass Fiber, Carbon Fiber, and Polyester Felt

摘要

This paper reports on mechanical property testing and evaluation of the proposed reinforced Cured-In-Place-Pipe (CIPP) composite materials for sewer rehabilitation. According to the current ASTM F1216, the flexural modulus of the reinforced CIPP is a key to determine the thickness of the CIPP liner. The higher flexural modulus value of a CIPP is, the thinner CIPP liner thickness is designed. The proposed reinforced CIPP could have several advantages; 1) comfortable handling the liner due to less weight, 2) requiring less resin, and 3) minimizing cross-section area reduction after the host pipe rehabilitation due to the reduction of the CIPP liner thickness. The objective of this study is to find the most effective composite CIPP layers to achieve the high flexural modulus within the maximum allowable strain at failure. Various composite materials, which include glass fiber, carbon fiber, polyester felt, unsaturated polyester resin, are used to create the CIPP composite samples. A total of 122 samples in six composite groups were made for the mechanical property testing. The flexural strength and modulus tests are conducted for all samples in accordance with ASTM D790 standard three-point load bend test. This paper presents the results of the mechanical property testing and a recommendation for the development of a reinforced CIPP composite liner.