Ancient Roman Concrete Stronger Than Modern

The newly discovered secret to Roman water-based structures’ strength could help today’s builders reinvent modern concrete. For over 1,500 years, their structures still remain standing – and the secret has been revealed. The Romans were discovered to use a mix of volcanic ash, lime (calcium oxide), seawater and lumps of volcanic rock, which held together... Read more »

Hot Weather Concreting

On occasion during periods of hot summer weather, a testing company may report a low compressive strength test result and subsequent tests carried out on cores removed from the concrete appear to confirm the initial low test results. Often, further testing reveals that the concrete was satisfactory at the time of delivery and that, with the... Read more »