| Autor: |
Maria Teresa Paulino Aguilar, Marcela Maira Nascimento de Souza Soares, Paulo Roberto Cetlin, Roberto B. Figueiredo |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Materials Science Forum. :363-368 |
| ISSN: |
1662-9752 |
| DOI: |
10.4028/www.scientific.net/msf.798-799.363 |
| Popis: |
Pozzolanic materials react with lime produced during curing of cement forming a hard phase similar to hardened cement. There are multiple methods to evaluate the pozzolanic activity of materials and one of these methods is the evaluation of the conductivity in lime solution. This method does not follow a standard procedure and there are multiple parameters that affect the results. The present paper summarizes some of the variations in this method reported in the literature and shows experimental results from tests in siliceous materials with crystalline (sand) or amorphous (silica fume) structure. The test is also used to evaluate the pozzolanic activity of sugar-cane bagasse ash. The effects of temperature, sample size and solution agitation are reported. The results indicates this method permits a rapid evaluation of pozzolanic activity but the testing parameters must be rigorously controlled. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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