A review on strength development of high performance concrete
| Autor: | Aloys Dushimimana, Frederic Nzamurambaho, Aude Amandine Niyonsenga |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Aggregate (composite) Curing (food preservation) 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction 0201 civil engineering Compressive strength Flexural strength Fly ash 021105 building & construction Ultimate tensile strength General Materials Science Cementitious Composite material Civil and Structural Engineering Shrinkage |
| Zdroj: | Construction and Building Materials. 307:124865 |
| ISSN: | 0950-0618 |
| Popis: | Strength is one of the most important properties of high performance concrete (HPC). Effects of supplementary cementitious materials (SCMs), aggregate, fiber, curing method, superabsorbent polymer (SAP), expansion-promoting additive (EPA), shrinkage reducing additives (SRA) and water-to-binder (w/b) ratio on the strength of HPC are reviewed. In general, incorporation of SCMs increases the strength, however, fly ash tends to reduce the early age strength but this can be mitigated by blending it with nanosilica or other admixtures. Small size and strong aggregate enhances the strength while weak aggregate limits the strength development. Fibers generally increase flexural and splitting tensile strengths but have little or no effect on the compressive strength. Elevated temperature curing is effective for high early age strength gain and its adverse effects on the later age strength can be limited using some SCMs. Decreasing w/b ratio leads to increased strength but with increased autogenous shrinkage (AS). Incorporation of SAP and SRA generally reduce the AS but also decrease the strength, however; the optimal control of extra added water from SAP and a hybridization of SAP with SRA may increase the strength but need to be further studied. |
| Databáze: | OpenAIRE |
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