Concrete Lab Technician
Concrete Lab Technician Interview Questions and Answers
Q1. What are the types of cement used in concrete?
Types of cement used in concrete include Portland cement, blended cement, and specialty cement.
Portland cement is the most common type used in concrete production
Blended cement is a mixture of Portland cement and other materials like fly ash or slag
Specialty cement includes rapid-hardening cement, low-heat cement, and sulfate-resistant cement
Q2. What is the tensile strength of concrete ?
The tensile strength of concrete is the maximum amount of tensile stress that it can withstand before failing.
Tensile strength is typically much lower than compressive strength in concrete.
It is influenced by factors such as the water-cement ratio, aggregate type, and curing conditions.
For normal strength concrete, tensile strength is around 10% of compressive strength.
Reinforcing concrete with materials like steel rebar can significantly increase its tensile strength.
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