стальная несъемная опалубка (СНО), скорость твердения бетона, бетон, традиционная опалубка, прочность бетона, испытания, Architectural engineering. Structural engineering of buildings, TH845-895

The article shows the results of experimental tests of speed of the concrete strength de- velopment, laid in a system of the steel permanent formwork. There has been described the structure of the steel permanent formwork. There has been provided a technology of tests exe- cution and there have been described experimental samples and testing equipment. Based on the tests` results, there has been provided a comparison between hardening speed of concrete laid in the traditional formwork and concrete laid in the steel permanent formwork. The results of executed tests show that concrete laid in the system of the steel permanent formwork hard- ens faster than concrete laid in the traditional formwork. There have been described the rea- sons of detected defect of concrete hardening speed-up, there have been described some physical characteristics of concrete laid in the system of the steel permanent formwork.