Investigation and Assessment of Colored Concrete Pavement Status: CompleteReport Date: 08/27/2014 Summary: Researchers observed colored concrete being constructed at three sites and performed petrographic analysis of core samples from four sites to investigate potential causes of premature distresses in many Minnesota colored concrete projects. No cause was conclusively identified, but recommendations include using a mix with a maximum water-to-cementitious materials ratio of 0.43 to eliminate excessive porosity and using a vibrating screed for concrete consolidation. Final Deliverables: Report #2014-26 Technical Summary Related Materials: Why is all the colored concrete deteriorating so fast? - (Blog Post) More costly 'decorative' concrete deteriorates faster, MnDOT study finds - (Other) MnDOT Study: Repeated Problems with Colored Concrete - (Other) Related Research: