Pycnometry for assessing porosity of fine recycled aggregates
| Autor: | Carina Ulsen, Anette Müller, Rafael dos Santos Macedo, Daniel Uliana, Guilherme Pinho Nery, Paula Oliverira Figueiredo, Ana Y. Jacomo |
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| Rok vydání: | 2021 |
| Předmět: |
RESÍDUOS DE CONSTRUÇÃO
Materials science chemistry.chemical_element Building and Construction Sphericity Microsphere chemistry Gas pycnometer visual_art Particle-size distribution visual_art.visual_art_medium General Materials Science Ceramic Composite material Mercury intrusion porosimetry Porosity Carbon Civil and Structural Engineering |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | The study extended the applications of powder pycnometry (PP) replacing the commercial enveloper for alternative envelopers (ceramic and carbon microspheres) to determine the envelope density of fine recycled aggregates (FRA) sand fraction. The properties of enveloper material such as particle size distribution, skeletal density and shape (aspect ratio and sphericity) affect the envelope density determination consequently impacts in porosity results by the association of PP and Helium pycnometry (HePyc). The porosity determination by association of HePyc and PP are comparable with mercury intrusion porosimetry analysis for medium sand fraction (0.300–1.180 mm). |
| Databáze: | OpenAIRE |
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