Explanation

Poker vibrator is an internal vibrator used to compact concrete.

It is inserted directly into the concrete to remove air bubbles and ensure density.

Explanation

• The standard height of a slump cone is 30 cm (12 inches)
• Used for testing the workability of concrete
• Height of a slump cone  is Also known as the Abrams cone
• Bottom Diameter: 20 cm (8 inches)
• Top Diameter: 10 cm (4 inches)

Last updated question by NA on 12-JUNE-2026

Explanation

Batching is the process of measuring concrete ingredients (cement, sand, aggregates, water).

Ensures correct mix proportions for desired concrete strength and quality.

Explanation

1 mile = 1,609.34 meters = 160,934 cm.

Used in unit conversions for distance measurements.

Explanation

Creep is the gradual increase in strain of a material under a sustained load.

Common in concrete and metals under long-term loading conditions.

Explanation

Bleeding is the upward movement of water in fresh concrete after placement.

It can cause weak surface layers and affect concrete durability.

Explanation

Strain is the deformation measure: change in length divided by original length.

It is a dimensionless quantity used in mechanics of materials.

Explanation

Lime (CaO) in cement affects soundness, preventing excessive expansion after setting.

It also contributes to the strength development of cement.

Explanation

Silica (SiO₂) forms 44–50% of raw materials in ordinary Portland cement.

It contributes to strength development by forming silicate compounds during hydration.

Explanation

Tricalcium aluminate (C₃A) in cement primarily affects the initial setting time.

It reacts quickly with water and gypsum, starting the hardening process.