Evaluation of properties of concrete reinforced with microsilica and synthetic macrofibers for rigid pavements in the coastal area of Peru (#1021)

Authors

Cerna Vasquez, Marco Antonio

Barreto Otiniano, Lisber Horacio

Nunja Llucho, Julio Helaman

Abstract

This study analyzes the effects of incorporating microsilica and synthetic macrofibers into concrete with a characteristic strength of f’c=280 kg/cm², intended for rigid pavements. Proportions of microsilica (2%, 4%, and 6%) and synthetic macrofibers (4, 6, and 8 kg/m³) were considered to evaluate physical and mechanical properties such as slump, temperature, unit weight, compressive strength, and flexural strength, following ASTM and NTP standards. The results show that 6% microsilica and 6 kg/m³ of macrofibers are optimal. Knowing this, in situ tests were conducted, including the diamond test, by preparing three panels: a standard panel, another with 6 kg of macrofibers, and another with 6% microsilica. This study contributes to the design of durable and efficient pavements to improve urban infrastructure.