Method of quantification of hydrated lime in asphalt mixtures
| Autor: | V. Delmotte, H.-J. Ritter, D. Séjourné, V. Mouillet, Didier Lesueur |
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| Přispěvatelé: | Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Equipe-projet DIMA (Cerema Equipe-projet DIMA), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Context (language use) [CHIM.INOR]Chemical Sciences/Inorganic chemistry engineering.material Durability Materials Science(all) Quantification Filler (materials) Control [CHIM]Chemical Sciences General Materials Science Composite material ComputingMilieux_MISCELLANEOUS Civil and Structural Engineering Lime Aggregate (composite) Hydrated lime Metallurgy [CHIM.MATE]Chemical Sciences/Material chemistry Building and Construction Test method Asphalt mixture Asphalt engineering Round robin test Analysis |
| Zdroj: | Construction and Building Materials Construction and Building Materials, Elsevier, 2014, 68, pp.348-354. ⟨10.1016/j.conbuildmat.2014.06.063⟩ |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2014.06.063 |
| Popis: | Hydrated lime has been known as an additive for asphalt mixtures for a long time and is now considered as an additive that increases asphalt mixture durability. It has been extensively used in the past 40 years in the USA, and is being increasingly used in most European countries, in particular Austria, France, the Netherlands, the United Kingdom and Switzerland. Given this context, it is necessary to have a fast and reliable quantification method of the hydrated lime content in an asphalt mixture. A German method was used in order to do so. The test method consisted first in recovering the filler from the asphalt mixture using the usual solvent extraction method (EN 12697-1). Then, 1 g of the recovered filler was titrated with a 0.5 M HCl solution using a method adapted from EN 459-2. The test method was validated on an AC 10 mixture manufactured in the laboratory. The nominal content was 2.0% hydrated lime based on the dry aggregate. The measured content was found to be 1.7%, in reasonable agreement with expected results. As a result, the hydrated lime content in an asphalt mixture can be evaluated. An estimate of the precision of the method is also given thanks to an international round robin test, showing that the repeatability of the method is close to 0.7% and its reproducibility 4.5% in terms of Ca(OH)2 content in the recovered filler. |
| Databáze: | OpenAIRE |
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