Recovery of Mining Waste as Aggregates in the Manufacture of High-Performance Concrete Pavers

Chancha B.G.P.; Tapia R.D.S. · Civil Engineering and Architecture (2026) · DOI: 10.13189/cea.2026.141322

Resumen

In this study, compressed pavers made from Portland cement type I and waste material from the Sierra Central mining center, located in the district of La Oroya, province of Yauli, Junín region, were evaluated. The primary aim of this research is to provide a sustainable alternative for the disposal of mining by-products, mitigating environmental degradation while simultaneously reducing the depletion of natural aggregates in the construction industry. The manufacture of these pavers was carried out considering three water/cement ratios (a/c): 0.55, 0.50 and 0.45. Likewise, two different heights were considered: 6 cm for pedestrian use and 10 cm for light vehicular traffic. The mixtures were made up of soil classified as type A-1-b and Portland cement type I, and subsequently compacted by means of a pressure of 7 tons. For the characterization and classification of the paving stones, the following technical standards were applied: the Peruvian Technical Standard NTP 399.611, the Colombian Standard NTC 2017, and the Guatemalan Standard NTG 41086. These served as a reference to evaluate the properties of compressive strength, flexural, water absorption, and dimensional variation. The results showed that paving stones manufactured with an a/c ratio of 0.45 presented the best performance in all the tests carried out. Based on these findings, it is concluded that the waste material from the Sierra Central mining center is suitable for the manufacture of paving stones for both pedestrian and light vehicular traffic.

Instituciones: Universidad Nacional del Centro del Perú