Abstract
One of the mechanical properties of thin spray-on liners, tensile-bond strength, is measured for comparison of thin spray-on liners. Test considerations, descriptions of apparatus, specimen preparation and test procedures are provided. The prepared thin spray-on liner mixture was poured onto a norite substrate using perspex mould with 35 mm cavities. A steel dolly was glued onto thin spray-on liner surface with a strong epoxy and then pulled in tension to measure the tensile-bond strength after curing periods ranging from 1 to 28 days. Testing was done under normal laboratory environmental conditions. The analysis of test results on 20 thin spray-on liner products, firstly, shows that tensile-bond strength increases remarkably for most thin spray-on liners with increasing curing time. Secondly, the categorisation and comparison of thin spray-on liners are possibly based on the tensile-bond strength.
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