Technical Questions

Question: Curling, shrinkage, and w/cm

Question: Requirements for storing and handling aggregate

Question: What is the purpose of finishing and texturing concrete surfaces?

Question: Size of test cylinder

Question: What nominal maximum sizes of aggregate are recommended?

Question: What factors affect the mixing time?

Question: How can durable aggregates be ensured?

Question: Using cube tests in lieu of cylinder tests

Question: The effect of pozzolans on freezing and thawing resistance

Question: How should the aggregates and other ingredients be measured to obtain uniformity in proportions?

Question: Mixture design and strength submittals

Question: How can segregation of the concrete between the mixer and its final point of placement be prevented?

Question: Why might fibers “ball up” in concrete mixes?

Question: How can the adequacy of mixing be determined?

Question: Does the color or finish of fiber-reinforced concrete differ from regular concrete?

Question: The effect of entrained air on the workability of concrete

Question: Advantages of low-density aggregate

Question: Protecting concrete from cycles of freezing and thawing

Question: If the paste is ample in amount, but is too thin and watery to float the aggregate particles, wh...

Question: Is chiseled concrete a common technique for facades

Question: Consistency, plastic consistency, and workability

Question: Factors affecting permeability

Question: Definition of concrete, hydraulic cement, mortar, and grout

Question: The effect of aggregate characteristics on concrete shrinkage and permeability

Question: What tests are necessary or desirable in making a series of trial mixtures to arrive at a suitab...

Question: How is concrete consolidated?

Question: Are polymer concrete and polymer-modified concrete used in repairs?

Question: Improving the abrasion resistance of concrete

Question: What is the difference between corrected and uncorrected weight in a concrete mix design?

Question: Hardening of hydraulic cement

Question: The effect of aggregate strength on concrete strength

Question: What water-cementitious material ratio should be used for a particular job when strength require...