Abstract
This paper presents an experimental study on the potential use of new type of composite as insulation material. The composite material (AACW-UPR) was synthesised through mixture between the Autoclaved Aerated Concrete Waste (AACW) as filler and Unsaturated Polyester Resin (UPR) as matrix. Several samples of the composite material with different UPR concentrations (50 and 70 vol.%) and different AACW particle size (0.2-1 mm, 1.5-2.5 mm, 3-6 mm) were prepared. The thermal behaviour and the water absorption capacity of the AACW-UPR composite materials were studied. Also, the influence of water absorption capacity on thermal resistance and thermal conductivity was studied. During the investigations we noticed the following: good chemical compatibility between the AACW particles and the UPR matrix; a decrease in thermal conductivity for samples with 50 vol.% UPR and inserted particles size between 3-6 mm and an increase in water absorption capacity with the increase in the filler content in the matrix. The increasing water absorption capacity determined a decrease in thermal resistance and a reduction of the composite features as insulating material.
Highlights
This paper presents an experimental study on the potential use of new type of composite as insulation material
The aim of this paper is to find out a possibility to recover the Aerated Concrete Waste (AACW) and to use it as thermal insulation material
The morphology of the AACW-Unsaturated Polyester Resin (UPR) composite materials was characterized by using a Scanning Electron Microscope (SEM, Quanta 200 FEI) equipped with a conventional tungsten electron source at 10 kV as accelerated voltage
Summary
This paper presents an experimental study on the potential use of new type of composite as insulation material. The AAC is one of the most commonly used lightweight construction material for contemporary buildings, especially due to its low density, good thermal and breathing properties and high fire resistance. This material has some disadvantages; for instance, its higher water absorption capacity makes it susceptible to deteriorations due to the water influence. The AACW is generated during the production process due to its non-compliance structural or shape Recycling such wastes as building materials appears to be a viable solution, to such pollution matters and to the problem regarding economical design of buildings.
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