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STRUCTURAL LIGHTWEIGHT CONCRETE FOR EXTERNAL WALLS — A CHALLENGE BETWEEN THE POLES OF IMPROVED THERMAL INSULATION AND FAIR FACED CONCRETE

CONCRETE

666.973

Thienel, K.-Chr. Univ.-Prof Dr.-Ing., Institute for Construction Materials, Universität der Bundeswehr München, Neubiberg

Alitinform No1 (50) 2018 г. 18-29 p.

Abstract

The type of concrete for external walls should not form an obstacle for freedom of design. This is a major demand of architects, which holds for both: normal as well as lightweight concrete. Some special characteristics of lightweight concrete have to be considered for ful-filling essential properties. They gain increasing importance with decreasing density and in parallel improved thermal conductivity. A close cooperation between purposeful architects and competent concrete technologists is mandatory for transferring design visions into real buildings even with the most extreme lightweight concretes at hand these days. Different im-portant aspects will be discussed in the following which have to be addressed to achieve this goal.

Key words:

lightweight concrete, fair faced concrete, execution, surface texture, compactability

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