The document provides information on tools, materials, and procedures for AAC block masonry work. It lists tools needed like hammers, trowels, and measuring equipment. It outlines points to check like drawings, planning, cleaning, angles, wet blocks, and joint filling. Procedures covered include mixing mortar, using trowels and hammers, staggered joints, toothing, level checks, coping casting, and housekeeping. Product details are given for AAC blocks and adhesive properties like strength, density, shrinkage. Coverage rates per bag of adhesive are listed for different block sizes.

1. AAC Block Masonry Work

2. ❑ Tools to be used in block masonry work
• Rubber hammer
• 3mm notch trowel
• Plumb bob
• Line dori
• Water level
• Measurement tape
• Block cutting machine
• Stirrer machine
• Right angle
• Broom stick

3. ❑ Point to be check for masonry work.
• Proper drawing study
• Proper planning of work
• Surface Cleaning
• Right angle from foyer as per Drawing
• Use fully wetted block
• Chemical mixing with mechanical stirrer machine
• Use rubber hammer & notch trowel
• Masonary joint Proper fill with mortar/chemical
• Checking of Staggered joints
• Toothing at wall junction
• Checking of block work in vertical and horizontal direction
• Coping casting at intermediate level.
• Check level of lintel
• Housekeeping and cleaning

4. ❑ AAC Block Properties
AAC (Autoclaved Aerated Concrete)
Sr.no Name of test Testing Method
std.
Limits as per is-2185(part-
3)-1984
Grade -1
1 Length
IS-2185(part-3)
Maxi +/- 5mm
Height Maxi +/- 3mm
Width Maxi +/- 3mm
2 Avg. compressive
Strength(N/mm2)
IS-6441(part-5) Min 4 (N/mm2)
3 Block density(dry) kg/m3 IS-6441(part-1) 551 to 650 (kg/m3)
4 Drying shrinkage(%) IS-6441(part-2) Max 0.05%
5 Thermal Conductivity W/m.k IS-3346 Max 0.24 (W/m.k) (watt per
meter kelvin)

5. ❑ Block Adhesive Properties
Parameters Ultratech
Appearance Free flowing
Colour Grey
Water demand (Per bag) 25-30%
Bulk Density 1.45 – 1.55 gm/cc
Pot life Approximately 2 hrs. at 27 C
Open time 5-10 minutes
Compressive Strength at 28 days Min 10-11 Mpa
Tensile Splitting Strength Min 0.3 Mpa (for 4mm at 28 days )

6. ❑ Ultratech Fixoblock - Coverage
Block size (mm) Wall area Coverage
Length Height Thickness (Sq.ft/40 kg bag)
600 200 100 160-180
600 200 150 120-140
600 200 200 70-90
600 200 300 50-70

7. ❑Proper drawing study

8. ❑Proper Planning of work
Sr.no. Flat no. 1901 1902 1903 1904
1
Lineout work
Strat date 02-06-19 04-06-19
2
Finish date 03-06-19 05-06-19
3
Block work up to
coping level
Strat date 29-05-19 30-05-19 04-06-19 06-06-19
4
Finish date 30-05-19 31-05-19 05-06-19
5
Coping casting
Strat date 31-05-19 01-06-19
6
Finish date 01-06-19 02-06-19
7
Block work coping
up to slab bottom.
start date 02-06-19 04-06-19
8
Finish date 04-06-19 06-06-19

9. ❑ Right angle from foyer as per Drawing

10. ❑ Right angle at floor level for layout work

11. ❑ After layout dimension checking

12. ❑ Use fully wetted blocks

13. ❑ Manufacturer instruction from Fixoblock brand
❑ Surface preparation
▪ Prepare the surfaces before the Ultratech Fixoblock application by removing oil, bond inhibiting agents
dirt, dust and laitance.
▪ Clean the surface with wire brush/water jet/mopping as suitable.
▪ Wet the block, bricks concrete blocks before application of Ultratech Fixoblock to avoid any abrupt
absorption of water from the material.
❑ Mixing
▪ Ultratech Fixoblock required 25% of water by weight of material.
▪ Mix Ultratech Fixoblock to the measured quantity of water using mechanical stirring for 2-3Minutes to
ensure a consistency free of lumps.
❑ Application
▪ It is recommended to apply Ultratech Fixoblock with notch trowels for attaining uniform thickness of
3mm consistency.
▪ Avoid using Ultratech Fixoblock in water consistency (Slurry from )to avoid generation of air pockets
between the AAC blocks and developments of cracks.

14. ❑ Chemical mixing
with Stirrer Mixer

15. ❑ Use notch trowel in one direction

16. ❑ Use rubber hammer in block masonry work

17. ❑ block masonry wall joint filling.

18. ❑ Alternate joint in block masonry

19. ❑ Toothing

20. ❑ Masonry top level checking

21. ❑ Plumb check on wall

22. ❑ Plumb check on beam face to wall face.

23. ❑ Coping casting.
❑ Checking of Coping top surface level.

24. ❑ Lintel casting and fixing

25. ❑ Housekeeping and cleaning work

26. Block Adhesive consumption and productivity.

27. Thank you