GFRC can be cast into thinner sections than precast, and is therefore as much as 75% lighter than similar pieces cast with traditional concrete. GFRC can have flexural strength as high as 4000 psi and an overall load capacity of 10,000-12,000psi, giving it a very high strength-to-weight ratio. GFRC reinforcement is built into the mix, so there is no need for internal reinforcement such as rebar, which makes traditional precast difficult to design into complex shapes. GFRC doesn't crack easily, can be cut without causing chipping, and will outlast precast concrete, cast stone, even some natural stone. Durability has been increased through the use of low alkaline cements and pozzolans.