Patent ID: 8632631
Filing Date: 2014-01-21
Classification: C01P,C04B,C09B,C09C

Abstract:
1. A system for preparing colored concrete, the system comprising: (i) a component comprising one or more red infrared reflective pigments having a percent reflectance measured in white Portland cement at 1000 nanometers of at least 60%, the pigment being selected from the group consisting of o-chloro-p-nitroaniline coupled β-naphthols, diazotized p-aminobenzamide coupled with BON-o-phentidines, diketo-pyrrolo-pyrrole reds, high IR iron (III) oxide hematites, cerium sesquisulfides, quinacridone magenta B, perylene reds, and combinations thereof, wherein the red infrared reflective pigments are ASTM C979 compliant; and (ii) a component comprising a cementitious matrix or a concrete coloring admixture.