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| Format: | Artículo científico |
| Language: | en |
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Pontificia Universidad Católica de Chile
2017
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| Online Access: | https://www.redalyc.org/articulo.oa?id=127654962002 |
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Table of Contents:
- Concrete quality assessment before building structure s submitting to environment al exposure conditions Abel Castañeda Juan José Howland Albear Francisco Corvo Rigoberto Marrero Ingeniería quality Concrete porosity capillary durability A study on concrete quality assessment before building structures submitting to environmental exposure conditions was carried out. It was necessary to determine the ultrasonic velocity pulse, compressive strength and percentage of effective capillary porosity values in concretes probes of water/cement ratio 0.4, 0.5 and 0.6. The results allowed to demonstrate how from relationship between compressive strength and percentage of effective capillary porosity, as well as, from relationship between capillary coefficient absorption and percentage of effect ive capillary porosity, durability requirements we re obtained. Durability requirements were: Critical value of percentage of effective capillary porosity from which the concrete permeability increased. Critical value of percentage of effectiv e capillary porosity from which, compressive strength decreased . Ultrasonic pulse velocity and compressive strength tests by itself were not enough to concrete quality assessment. Results using the visual observation were confirmed , in the reinforced concrete probes exposed to corrosivity categories of the atmospheres very high (C5) and extreme (CX) in a tropical coastal climates during three years, as well as by scanning electron microscopy tests in small samples of hardened cement paste for the three water/cement ratios. 2017 artículo científico 0717-7925 https://www.redalyc.org/articulo.oa?id=127654962002 en http://www.redalyc.org/revista.oa?id=1276 Revista de la Construcción application/pdf Pontificia Universidad Católica de Chile Revista de la Construcción (Chile) Num.3 Vol.16