Influence of Service Conditions and Mix Design on the Physical–Mechanical Properties of Roller-Compacted Concrete for Pavement
Metadatos
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MDPI
Materia
Physical–mechanical properties Relative humidity Roller-compacted concrete
Fecha
2024-01-23Referencia bibliográfica
Pulecio-Díaz, J.; Sol-Sánchez, M.; Moreno-Navarro, F. Influence of Service Conditions and Mix Design on the Physical– Mechanical Properties of Roller-Compacted Concrete for Pavement. Materials 2024, 17, 552. https://doi.org/10.3390/ma17030552
Resumen
This research focuses on the behavior of roller-compacted concrete (RCC) used in pavements,
which are prone to deterioration affecting their performance. These deteriorations result from various
causes, including traffic load, errors during construction, mix design, and ambient conditions. Among
these, ambient conditions could lead to a marked variable impact on material behavior and durability
depending on the conditions associated with each region. Accordingly, this study aims to deepen
the understanding of the effect, which a broader range of ambient conditions and different mix
designs have on the physical and mechanical properties of RCC. Measurements such as the amount of
water vapor per kilogram of air were used to apply the findings comprehensively. The RCC analysis
encompassed experimentation with different compositions, altering the cement water ratio amount,
and adding a superplasticizer. The impact of curing on the materials was evaluated before subjecting
them to various humidity and temperature conditions. Laboratory tests were conducted to measure
performance, including moisture, shrinkage, compressive strength, and the progression of flexural
fracture resistance over curing periods of up to 90 days. The results revealed a logarithmic correlation
between shrinkage and ambient humidity, which is the most determining factor in performance.
Mix optimization through increased cement and reduced water enhanced the tensile strength of
the material. Furthermore, the curing process was confirmed to increase resistance to shrinkage,
especially in the long term, establishing it as a crucial element for the structural stability of RCC,
which is relatively insensitive to variations in ambient conditions.