Structural Science Composites (SSC) Ltd. has developed manhole and drain covers to replace the traditional steel covers on roadways in England. The manhole covers consist of thermosetting urethane acrylate resin and use Scott Bader Co. Ltd.’s Crestapol resin.
To make the manhole covers, a full resin transfer molding (RTM) process is used, giving the strength-to-weight ratio, surface details and anti-slip finish required for these types of access covers. SSC’s composite design uses its patented Thrubeam design, which produces a stiffer beam in combination with glass fiber reinforcement and the high-performance properties of Scott Bader’s acrylic resin.
