APA Precast Concrete Batch Plant Operator | Questions and Answers | 2025 Revised Update | 100% Correct

APA Precast Concrete Batch Plant
Operator

A mixture of cement and water is called: - CORRECT ANSWER-paste

When sand is added to paste it is called: - CORRECT ANSWER-mortar or grout

When coarse aggregate is added to mortar, the combination is called ______. -
CORRECT ANSWER-concrete

________ make up about 60 to 75% of the volume of concrete - CORRECT ANSWER-
Aggregates

The particle size distribution or combined coarse and fine aggregate gradation should
have all sizes present in adequate amounts. True or False - CORRECT ANSWER-True.
If the gradation is evenly distributed adequately the void content to be filled by the
cement paste is minimized. This process produces a concrete that will hold together
without segregating and will minimize the need for cement or cementitious content.

Minimizing the cement in the mixture also benefits ________ stability, _______
development, and _________. - CORRECT ANSWER-volume, heat, durability

There are primarily two types of aggregates, _______ or ________. - CORRECT
ANSWER-crushed, natural

Crushed aggregates can be either coarse or fine. True or False - CORRECT ANSWER-
True

Crushed aggregates were naturally formed and then _______ and _______. -
CORRECT ANSWER-mined, crushed

Crushed aggregates are also referred to as ________ aggregates - CORRECT
ANSWER-manufactured aggregates


Concrete is a mixture of _____, ______, and ______. - CORRECT ANSWER-cement,
water, and aggregates.

The most commonly used concrete for structural purposes is: - CORRECT ANSWER-
Normal weight concrete.