Deformation behavior of cement treated demolition waste with recycled masonry and concrete subjected to drying and temperature change |
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Affiliation: | 1. QUALISUD, UMR 95 CIRAD/Université de Montpellier, Faculté de Pharmacie, Laboratoire de Physique Moléculaire et Structurale, 15 avenue Charles Flahault, 34093 Montpellier Cedex 5, France;2. Faculty of Science, Chandrakasem Ratjabhat University, Chatuchak, Bangkok 10900, Thailand;3. IATE, UMR 1208 CIRAD/INRA/Montpellier SupAgro/Université de Montpellier, 2 Place Pierre Viala, 34060 Montpellier Cedex 5, France |
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Abstract: | Cement treated materials are widely used as road bases in pavements. Shrinkage of these materials due to moisture and temperature changes is a critical issue for determining shrinkage cracking in pavements. This paper presents the influence of four mixture variables (masonry content, cement content, water content and degree of compaction) on drying shrinkage and coefficient of thermal expansion (CTE) of cement treated demolition waste with recycled masonry and concrete (CTMiGr). The experimental results showed that the masonry content was the dominating factor affecting dry shrinkage and CTE of CTMiGr. Increasing the masonry content can not only lead to an obvious decrease of dry shrinkage of CTMiGr, but also a low CTE level. Dry shrinkage of CTMiGr increased as the increase of cement content as well as degree of compaction and water content. The CTE of CTMiGr was between 7.58 × 10?6/°C and 10.22 × 10?6/°C, which was mainly determined by the masonry and cement content. |
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Keywords: | Cement treated road base Dry shrinkage CTE Construction and demolition waste Recycled masonry Recycled concrete |
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