Influence of the superplasticizing additive in concrete with lateritic aggregate
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| Autoři: | , , , |
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| Médium: | artículo original |
| Stav: | Versión publicada |
| Datum vydání: | 2025 |
| Popis: | Due to the scarcity and high transportation costs of stone aggregates in the east and northeast of Bolivia, different alternatives have been sought for their partial or complete replacement in the construction industry and, specifically, to produce concrete. The objective of this research is to evaluate the workability, compressive strength, and ultrasonic pulse velocity (UPV) of concrete produced entirely with coarse lateritic aggregates and a commercial superplasticizer additive. Using the IPT/EPUSP method, concrete with coarse lateritic aggregate was dosed for 30 MPa (design compressive strength). Five different percentages of additive (by weight of cement) were considered: 0% (reference), 0.6, 0.8, 1 and 1.2%. Although the superplasticizer additive improves workability at higher percentages, the mixtures with 0.6, 0.8 and 1% presented higher compressive strength and VPU, when compared to the reference (0%). 1.2% of additive presented the lowest values of compressive strength and VPU. The use of additives, in this case superplasticizer, is beneficial for the workability and compressive strength of lateritic concrete, but the most appropriate content for its use must be defined. |
| Země: | Portal de Revistas UCR |
| Instituce: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Jazyk: | Español |
| OAI Identifier: | oai:portal.revistas.ucr.ac.cr:article/2275 |
| On-line přístup: | https://revistas.ucr.ac.cr/index.php/rmateriales/article/view/2275 |
| Klíčové slovo: | Lateritic aggregate superplasticizer additive slump compressive strength ultrasonic pulse velocity Agregado laterítico aditivo superplastificante asentamiento resistencia a la compresión velocidad de pulso ultrasónico |