This paper presents the results of investigation properties fine-grained concrete on expansive cement for fiber-reinforced shotcretes used metro tunneling. Basic factors affecting material expansion after mixing with water are described. The influence components values strength indices and volumetric deformations shotcrete is studied. Improvement process, physical mechanical, operational charac...

High-strength-performing concretes (HSPC) have been used extensively due to new building requirements and their special properties suitable for modern cities. Superplasticizers (SPs) are essential components in the mix design of these since they control fresh improve durability. In practice, superplasticizers achieve a desired workability without increasing water content by dispersing agglomera...

One of the effective ways to increase durability building products and structures operating under influence aggressive media is using sulfur binders manufacture concretes. It shown that chemical resistance concretes a greater extent depends on matrix composition. was found introduction modified additives increases their resistance. With optimal content additives, water composites from 2.3 3.2 t...