Light-weight fibre-cement cladding elements

Abstract

By the means of various kinds of light-weight aggregates or aerating agents it is possible to achieve light-weighing of thin-walled fibre-cement composite elements. Even if these are not structural elements, it is necessary to evaluate also strength characteristics and resistance to environment for their durability in certain applications. In one part of our research light-weighing possibilities of standard composition were evaluated by the means of porous structure creation. In the second part the standard aggregate was substituted with available kinds of light-weight porous aggregates in a certain part or in a whole volume. As the limit criterion there was maximal particle size 1 mm for spraying of fibre-cement mixture by the means of special air pressure equipment. This paper brings not only a summary of laboratory experiments but also examples of successful realizations such as balcony panelboards, façade elements, bridge structure claddings or bulk flower pots.