Temperature sensing within an underground structure to determine liner cure schedule

A method of determining pipe lining characteristics for lining an underground structure, comprising:

• determining a temperature inside the underground structure, a type of resin used in the underground structure, and an initial temperature of the resin used;
• inputting the inside temperature, the type of resin used, and the initial resin temperature into a computer program on a computing device;
• and obtaining the pipe lining characteristics from the computer program based on the temperature inside the underground structure, the type of resin used, and the initial resin temperature;
• wherein the computer program comprises a set of data obtained by performing a plurality of tests under simulated conditions in a soil cell apparatus, wherein the soil cell apparatus includes a housing having a media and an aperture within the housing for receiving a pipe which is surrounded by the media, and a heat exchanger embedded within the media for adjusting a temperature of the pipe and the media during the plurality of tests.