Universidad de Los Andes

Effects of Desert Sands on the Fresh and Hardened Properties of Cement-Based Materials

Abstract The use of desert sands as an alternative to river sand in concrete may be limited by the presence of internally sourced sulfate and chloride ions, which may affect hydration and long-term performance. This study investigates the influence of naturally contaminated deser...

More than Infrastructure: How Institutional Frameworks Shape Socioeconomic Value in Toll Roads

Abstract Toll road projects are employed in developing countries to deliver critical infrastructure, fostering socioeconomic development. However, these initiatives often face community opposition because of misalignment between perceived local needs and promised benefits. This s...