| Autor: |
Solodkyy Serhiy, Markiv Taras, Sobol Khrystyna, Hunyak Oleksii |
| Jazyk: |
English<br />French |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
MATEC Web of Conferences, Vol 116, p 01016 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2261-236X |
| DOI: |
10.1051/matecconf/201711601016 |
| Popis: |
High-strength concrete is effectively used worldwide in the last three decades, but it is more brittle in comparison with normal strength concretes. Partial substitution of cement in concrete by active mineral additives and usage of chemical admixture of plasticizing and air-entraining action can considerably change their fracture properties. The obtained results show that the increase of the fracture properties is observed in concretes modified with chemical admixtures incorporating mineral additives such as zeolite and limestone due to consolidation of the concrete microstructure. Densification takes place as a result of limiting the amount of calcium hydroxide (CH) due to its reaction with active silica included in the zeolite and the formation of larger amounts of hydrated calcium silicates of tobermorite type as well as calcium hydroaluminate and hydrocarboaluminate with the simultaneous adsorption modification of hydrated products by chemical admixtures. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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