Proportioning and characterization of lightweight concrete mixtures made with rigid polyurethane foam wastes
By P. Mounanga, W. Gbongbon, P. Poullain, Philippe Turcry. 2008
213 citations recorded by the source corpus.
This paper presents the results of an experimental study concerning the incorporation of polyurethane (PUR) foam wastes into cementitious mixtures in order to produce lightweight concrete. A semi-empirical method is first proposed to predict the density of fresh PUR foam-based concrete mixtures. Seven concrete mixtures containing various PUR foam volume fractions (from 13.1% to 33.7%), and two reference concrete mixtures (without PUR foam) were prepared and characterized. In particular, their thermal and mechanical properties were determined. This permitted to quantify the influence of the PUR foam volume fraction on these parameters. Some specimens were maintained under water during 28 days, while the others were dried in air. The PUR-foam concrete thermal conductivity and compressive strength are, respectively, 2–7 times and 2–17 times lower than those of the reference mixture, depending on the volume fraction of PUR foam and on the curing conditions. Besides, the use of PUR foam in concrete implies a strong increase in the drying shrinkage and in the mass loss during the first seven days. These results can be related to the high porosity and the weak compressive strength of alveolar polyurethane.
Subfields: Civil and Structural Engineering, Environmental Engineering
View Paper: https://www.semanticscholar.org/paper/43de07745cbf0e350ad1a10891781d6dd6afb1b4
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In Civil and Structural Engineering
- Yining Ding
- F. Pacheco-Torgal
- Valeria Corinaldesi
- G. Moriconi
- Said Jalali
- Jorge de Brito
- Rafat Siddique
- L. Evangelista
In Environmental Engineering
Citations in the corpus
- Properties and durability of concrete containing polymeric wastes (tyre rubber and polyethylene terephthalate bottles): An overview (2012, background): “[93] mentioned that concrete composites containing polyurethane wastes from insulation panels although they have low thermal conductivity they present high compressive strength loss which is due to the weak and porous polyurethane aggregates.”
- Mechanical behaviour and thermal conductivity of mortars containing waste rubber particles (2011, background): “[16], the estimation of the PU foam density, greatly influenced by both the high compressibility and absorption of the lightweight aggregates, was quite uncertain and it causes difficulty to proportion the related concrete mixtures.”