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A concrete structure exposed to a rich sulfate environment or contained sulfate salts in its mix constituents (water, aggregates, or cement) can degrade rapidly and causes reduction of strength.  Sulfate with the presence of water and cementitious paste will result in a process called Sulf...

FRP systems for strengthening and repairing have been in use since the mid 1990’s. They are being applied on beams, columns, and slabs of buildings and bridges to increase the strength and extend their service life, even after they have been severely damaged due to excess loading, environm...

April 24, 2019

During the past week, CTLGroup-Qatar was pleased to deliver for the second time in Qatar 2 customized ASTM Training Programs related to concrete. The topics related mainly to concrete industry personnel who were looking for fundamental yet practical concrete knowledge. A total of 35 attend...

A brief summary about chloride attacks in concrete structures: its origin, chemical reaction, effect on concrete durability, laboratory testing methods as well as proactive/preventative maintenance

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CTL Group Celebrates 100 Years with PCA (Source: Engineering News Record)

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April 24, 2019

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