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New machines blast off

Blastrac has introduced grinders, scarifiers and a walk-behind scraper. The Blastrac POD-2000 is a virtually dust-free grinder, with patent-pending Point of Development technology that allows grinding dust to be collected immediately. The machine features high-velocity dust ports that rotate with the diamond tooling. While other diamond grinders allow dust to […]

ACI considers cracks, other concrete issues

The American Concrete Institute has released five new publications: 224.1R-07: Causes, Evaluation, and Repair of Cracks in Concrete Structures — This publication summarizes the causes of cracks in concrete structures, presents procedures used to evaluate cracking, and describes techniques for crack repair. 332.1R-06: Guide to Residential Concrete Construction — This […]