The present invention consist on polymer-modified cement formulations with self-healing capability at ambient temperature. The impact of this technology will be to lower the cost and frequency of concrete infrastructure repairs and maintenance while increasing its lifespan. The present polymer-modified cements that can be readily mixed with typical fine and coarse aggregates to build new concrete structures. It will also provide the technical basis to extend their application to more durable, cost-effective repair materials and methods for existing infrastructure.