ID = 49 
Title =The emission of VOCs from floor constructions 
Abstract = Experience shows that a high moisture content in concrete slabs at the time floor coverings are laid often increases emission of volatile organic compounds (VOC) from the floor. In this study the emission of VOCs was measured from floor constructions with concrete, adhesive and vinyl flooring. Concrete with different water-to-cement ratios was placed in cups. A levelling compound of low alkali content was applied to some of the specimens. The concrete was left to dry for varying periods before the vinyl flooring was laid in order to obtain different moisture contents. The emission of VOCs from the floor specimens was measured by a Field and Laboratory Emission Cell (FLEC). The results show that the emission of VOCs increases from floors with high moisture content. However, the emission from the floors where the concrete has a low water-to-cement ratio also increases even if the moisture content is low. This probably an effect of the higher content of alkali in this concrete composition. A levelling compound decreases the emission when the underlying concrete has a low water-to-cement ratio. This effect was not obtained when the underlying concrete had a higher moisture content. The conclusion is that it is both important to let the concrete dry sufficiently before applying the floor covering and to the alkali content of the material, concrete or a levelling compound, directly beneath the vinyl flooring. 
Location = Healthy Building 95 page 875-880 
Reference type = Proceeding (Conference) 
Author = Johnsson,H.W. 
Company or Institute = 
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Last updated 1997-01-24