Articles, Guides & Reports

This article presents results of testing of concrete pavements constructed from mixtures with portland limestone cement (PLC) and portland cement (PC), manufactured from the same clinker in the same plant. Performance of these pavements after 3 to 4 years’ service in aggressive climates in Canada was evaluated and compared. Discussed test results include compressive strength, depth of carbonation, chloride permeability, and apparent chloride diffusion.

Based on research data, new materials are being proposed for use as alternative cements or alternative supplementary cementitious materials. However, bringing new materials to market is difficult, time-consuming, and expensive. The product data sheet proposed in this article will guide potential suppliers through the testing and documentation that will be required to market alternative cementitious materials.

Achieving the designed service life of a repair depends on several factors including the material selection. This month’s Q&A discusses using portland-limestone cement instead of specified portland cement to repair concrete severely damaged by freezing-and-thawing cycles and corrosion due to exposure to deicing salts. The repair is expected to last at least 30 years.