Thin joint blockwork-Mixing and laying

What is the recommended thickness for mortar joints in the thin-joint system?

• 10mm
• 5mm
• 2–3mm
• 1mm

What is the typical weight of a bag of thin-joint mortar?

• 20kg
• 25kg
• 30kg
• 40kg

What is the recommended method for mixing thin-joint mortar?

• By hand only
• Using a powered whisk or paddle mixer
• Using a shovel on a flat surface
• By pouring water into the bag

What is the correct temperature range for using thin-joint mortar?

• Below 0°C
• 0°C to 5°C
• Above 5°C
• Above 10°C

What should be done if the mortar loses workability on site?

• Add more water
• Discard the mortar
• Re-mix with a whisk
• Add admixtures

What is the maximum workable time for mixed thin-joint mortar in the bucket?

• 2 hours
• 4 hours
• 6 hours
• 8 hours

What tool is commonly used to spread thin-joint mortar?

• Trowel
• Applicator scoop
• Plastering float
• Bricklaying hammer

How long does it take for thin-joint mortar to set after application?

• 5 minutes
• 10 minutes
• 15 minutes
• 20 minutes

What should be used to adjust levels during the correction time of mortar?

• Trowel
• Rubber mallet
• Spirit level
• Block rasp

What is the purpose of movement joint ties?

• To improve thermal insulation
• To distribute load evenly
• To allow for contraction and expansion
• To connect external walls