1. bookVolume 30 (2022): Issue 1 (March 2022)
Journal Details
License
Format
Journal
eISSN
1338-3973
First Published
23 May 2011
Publication timeframe
4 times per year
Languages
English
access type Open Access

Specific Design Features of Prefabricated Fire-Resistant Floor Slabs Made from Lightweight Concrete

Published Online: 13 Apr 2022
Volume & Issue: Volume 30 (2022) - Issue 1 (March 2022)
Page range: 1 - 7
Journal Details
License
Format
Journal
eISSN
1338-3973
First Published
23 May 2011
Publication timeframe
4 times per year
Languages
English
Abstract

Reinforced concrete roof and floor structures have the highest heating temperatures and are exposed to the most difficult conditions during fires that occur in buildings and structures. The standardized fire resistance of hollow-core slabs made of heavy concrete from Portland cement is regulated as REI 45 or REI 60. The aim of the work is to develop a composition of lightweight fire-resistant concrete and architectural engineering for floor slab devices. The composition of lightweight fire-resistant concrete made from expanded clay aggregates and alumina cement was developed as a result of the work. The degree of fire resistance of the lightweight concrete composition with a bulk density of 1475 kg/m3 has been practically determined; i.e., REI 90. The structural solution of the floor slab has been improved; at the same time, we propose to develop a slab with a flat section made of lightweight fire-resistant concrete. Such floor slabs, along with an increase in the fire resistance limit, improve the heat-insulating ability of a floor due to a significant reduction in the coefficient of the thermal conductivity of lightweight concrete.

Keywords

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