Design of heavy and fine-grained concrete compositions. Ways of development

Abstract

Recommendations for the design of compositions of heavy and fine-grained concrete, both conventional and high-strength, are considered. For the first time, approaches to the selection of self-compacting concrete, as well as straining high-strength heavy and high-strength fine-grained concrete are considered. Historical information is given on the “Guide to the selection of heavy concrete compositions” (1979) and “Recommendations for the selection of heavy and fine-grained concrete (to GOST 27006–86)” (1990). Directly in the 1st edition of the Recommendations, the approaches to the development of concrete compositions to ensure a given workability have been changed. The methodology for the development of production standards is also presented, i.e. the least labor-intensive methods for the development of concrete compositions, both normal hardening for monolithic structures and concrete for precast concrete products, are given in the examples and in the text.