CONCRETE BATCH PLANT OPERATOR FINAL
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
◉The most commonly used concrete for structural purposes is: Answer:
Normal weight concrete.
◉Normal weight concrete weighs approximately: Answer: 140 lb/ft^3
◉Lightweight structural concrete may weigh from _____ to ______
lb/ft^3. Answer: 90, 100
◉Heavyweight concrete may weigh ______. Answer: 200 lb/ft^3 or
more.
◉Most concrete today is made with: Answer: Portland Cement
◉Concrete is usually referred to as a mixture of two components;
______ and _______. Answer: aggregate, paste
◉The hardening process of the paste is a chemical reaction called
_________. Answer: Hydration
, ◉_______ is developed in the hydration process. It may peak up to
_______ degrees. Answer: heat;130 F
◉Concrete does hardens and cures by drying. True or False Answer:
False ; Concrete does not harden or cure by drying, because cement
needs moisture to hydrate and gain strength. When concrete dries fully,
hydration stops, and it no longer gains strength.
◉A mixture of cement and water is called: Answer: paste
◉When sand is added to paste it is called: Answer: mortar or grout
◉When coarse aggregate is added to mortar, the combination is called
______. Answer: concrete
◉________ make up about 60 to 75% of the volume of concrete
Answer: Aggregates
◉The particle size distribution or combined coarse and fine aggregate
gradation should have all sizes present in adequate amounts. True or
False 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.
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
◉The most commonly used concrete for structural purposes is: Answer:
Normal weight concrete.
◉Normal weight concrete weighs approximately: Answer: 140 lb/ft^3
◉Lightweight structural concrete may weigh from _____ to ______
lb/ft^3. Answer: 90, 100
◉Heavyweight concrete may weigh ______. Answer: 200 lb/ft^3 or
more.
◉Most concrete today is made with: Answer: Portland Cement
◉Concrete is usually referred to as a mixture of two components;
______ and _______. Answer: aggregate, paste
◉The hardening process of the paste is a chemical reaction called
_________. Answer: Hydration
, ◉_______ is developed in the hydration process. It may peak up to
_______ degrees. Answer: heat;130 F
◉Concrete does hardens and cures by drying. True or False Answer:
False ; Concrete does not harden or cure by drying, because cement
needs moisture to hydrate and gain strength. When concrete dries fully,
hydration stops, and it no longer gains strength.
◉A mixture of cement and water is called: Answer: paste
◉When sand is added to paste it is called: Answer: mortar or grout
◉When coarse aggregate is added to mortar, the combination is called
______. Answer: concrete
◉________ make up about 60 to 75% of the volume of concrete
Answer: Aggregates
◉The particle size distribution or combined coarse and fine aggregate
gradation should have all sizes present in adequate amounts. True or
False 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.
