CompGlass – First results with fibre glass reinforced cellular concrete

1 Loss of mass of different glass types after the alkali test: l. to r. AR-glass (CemFil), KNS float glass; Treatment 1 = aluminium enrichment, Treatment 2 = magnesium enrichment, Treatment 3 = plastic coating + post-treatment
1 Loss of mass of different glass types after the alkali test: l. to r. AR-glass (CemFil), KNS float glass; Treatment 1 = aluminium enrichment, Treatment 2 = magnesium enrichment, Treatment 3 = plastic coating + post-treatment
2 Images of autoclaved cellular concrete after bending and tensile tests; left: pull-out fibres, uniformly distributed over the entire fracture surface; right: AR-fibres coloured blue with CoO, uniformly distributed over the entire area
2 Images of autoclaved cellular concrete after bending and tensile tests; left: pull-out fibres, uniformly distributed over the entire fracture surface; right: AR-fibres coloured blue with CoO, uniformly distributed over the entire area
3 Extremely thick bundle of fibres in reinforced cellular concrete (AR-fibres, Ø 15 µm)
3 Extremely thick bundle of fibres in reinforced cellular concrete (AR-fibres, Ø 15 µm)
4 Computer tomography image; dark grey = solid base, light grey = pore; black = glass fibres
4 Computer tomography image; dark grey = solid base, light grey = pore; black = glass fibres
5 Results of the thermal conductivity measurement (WLF); Bulk density of the reference: 0.558 g/cm3, bulk density of the reinforced sample: 0.547 g/cm3
5 Results of the thermal conductivity measurement (WLF); Bulk density of the reference: 0.558 g/cm3, bulk density of the reinforced sample: 0.547 g/cm3
6 Change in the flexural tensile strength due to the addition of AR-glass fibres (L = 10 cm, Ø = 14 µm)
6 Change in the flexural tensile strength due to the addition of AR-glass fibres (L = 10 cm, Ø = 14 µm)
7 Influence of the type of fibre (identical quantities; length of fibre 2 cm) on the strength of cellular concrete: left E-glass with the thermo-chemi­cal post-treatment; right AR-glass
7 Influence of the type of fibre (identical quantities; length of fibre 2 cm) on the strength of cellular concrete: left E-glass with the thermo-chemi­cal post-treatment; right AR-glass
Close-up of fresh ­aerated concrete
Close-up of fresh ­aerated concrete

The objective of the described study was to investigate the feasibility of glass fibre reinforcement of cellular concrete. Particular aims were to demonstrate a method of fibre-glass preparation, a process technique and the properties of the new compound material.

1 Introduction

The available range of construction material products is very large and diverse. Nevertheless, investigations are constantly in progress, either in order to develop new materials or to improve the existing ones. Compared to conventional building materials such as concrete, cellular concrete provides numerous advantages. In the manufacturing of cellular concrete, the characteristic values for primary energy consumption and the ratio of raw material to produced building material are significantly more favourable, and its thermal insulation characteristics are better. Despite these...
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ZKG 10/2013

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ZKG 10/2013

Ressort:  Materials
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TEXT Prof. Dr.-Ing. Heiko Hessenkemper, Dipl.-Ing. Liesa Hübner, Dipl.-Ing. Martin Groß,
Dipl.-Math. Sascha-Djamal Matthes, Dipl.-Ing. Franziska Mai
TU Bergakademie Freiberg – Institute of Ceramic, Glass and Construction Materials;
Chair of Glass & Ceramics

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