Epoxy resin is used as a resin binder for natural stone such as gravel in landscape pavements in tourist areas. By using 1,3-bis(aminomethyl)cyclohexane as a hardener for this resin binder, pavement materials with high strength, high water resistance, and high weather resistance can be produced.
Bending strength
(aggregate：dry silica sand No.4)
Flexural tests were conducted on cured materials made by mixing 1,3-BAC and silica sand No. 4 in a silica sand/resin = 9/1 weight ratio, cured at 23°C/50%RH for one week, and flooded for another week. The cured materials showed higher strength after flooding compared to alicyclic amine and aliphatic amine from other companies. Thus, since cured 1,3-BAC exhibits high water resistance, it can be expected to suppress the strength loss of pavement materials due to rain and moisture.
UV resistance test
(curing condition：23℃/50%RH、1week)
1,3-BAC is a weather-resistant amine. Pavement materials are affected by sunlight, which causes yellowing of resins due to UV rays. 1,3-BAC shows less yellowing due to UV rays than aliphatic amines, and can be expected to reduce resin coloration due to sunlight.
Coating properties without aggregate
(curing condition：23℃/50%RH/1 week)
1,3-BAC is a fast curing amine, curing faster than alicyclic and aliphatic amines. As a result, the curing period after paving can be shortened.
