AL Tunnel Practice Questions - Alabama Tunnel Contractor Examination Exam

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A pump operator adds extra water at the shaft collar to make invert concrete easier to place. What is the most likely effect?

Higher water-cement ratio, lower strength, and higher permeability than the approved mixture Automatic compliance with the approved mix design A decrease in shrinkage cracking with no other effects An increase in specified 28-day strength

Correct Answer:

Higher water-cement ratio, lower strength, and higher permeability than the approved mixture

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