வரவேற்கிறோம் - L1SUPPLY NETWORKS!!
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வரவேற்கிறோம் - L1SUPPLY NETWORKS!!
AAC blocks are eco-friendly, have high strength and are lightweight than hollow blocks. Here’s why AAC blocks are better than hollow blocks.
Autoclaved aerated concrete (AAC) blocks are all-weather construction materials that are durable, eco-friendly and lightweight. These are recyclable, reusable and renewable. AAC Blocks are generally used for high-rise buildings with high-temperature variations. AAC blocks provide a hard skeleton for exterior siding and a solid substrate for interior plaster. These are greyish blocks made up of Portland cement, gypsum, water, sand and aluminum powder.
Solid hollow blocks have holes that usually take up more than half of the cross-sectional area which makes them lightweight. These are generally used while constructing boundary fences, as it is easier to run wires or piping through them. Solid blocks are of different types, namely Stretcher block, Pillar block, Lintel block, Jamb block, Column block, Corner block, Split face block, Bullnose block and Partition block. Hollow blocks come in three grades, A, B and C. Grade A and B are used for load-bearing concrete blocks, whereas the latter is used for non-load bearing concrete walls.
Both AAC blocks and hollow blocks are masonry bricks. While both are very attractive and durable, they still have their different qualities, advantages and disadvantages.
Given below are the features and differences between AAC blocks and solid hollow blocks, and you can decide for yourself which one will be better for you?
|
Parameter |
AAC Block |
Hollow Block |
|
Raw materials |
Composition includes sand, fly ash, cement, lime, gypsum, aluminium powder and water. |
Composition includes Portland cement, sand, bottom ash, rice husk and sawdust. |
|
Dimensions in mm |
(400-600) x (100-200) x (100-300) |
(400-600) x (100-200) x (100-200) |
|
Usage |
Not suitable for load-bearing walls |
Can be used for both load-bearing and non-load-bearing walls |
|
Dry density |
Between 550-650 kg/m3 |
Varies from 690-850 kg/m3, depending on whether it is VP or HP block. |
|
Compressive strength |
3-6 N/mm2 |
10 N/mm2 |
|
Fire resistance |
It can withstand 1600 degrees celsius for up to 6 hours. |
It is can withstand 1600 degrees celsius for 4 hours. |
|
Baking temperature |
These are baked under temperatures of 190 degrees celsius and 100 kPa pressure. |
These are burnt under 1000 degrees celsius to make them hard and strong. |
|
Weight |
These are lightweight due to the presence of aluminium powder that acts as an expansion agent. |
It is also lightweight due to vertical and horizontal perforations. |
|
Thermal insulation |
AAC Blocks has lower thermal conductivity due to the presence of voids inside the bricks. |
Hollow Blocks are thermal insulators due to their perforated shape. |
|
Soundproof |
It can reduce sound up to 50 dB. |
These can block sound up to 44.88 Rw (dB). |
|
Efflorescence |
Chances of efflorescence increase on coming into contact with moisture and air. |
The presence of efflorescence is lower as compared to AAC blocks. |
|
Workability |
It is fast and easy to work due to its lightweight. |
It is also easy to work with due to its lightweight. |
|
Mortar |
Consumption of plastering and mortar in masonry is reduced due to its plane surface. |
Plaster is optional and not using it lowers the masonry mortar. |
|
Production |
AAC blocks are continuously produced without any interruption. |
Hollow Blocks are not produced continuously and are made only when an order is placed. |
|
Number of blocks required per square meter |
12 |
8 |
These are the similarities, differences and features of AAC blocks and solid hollow blocks. Although hollow blocks are widely used, AAC blocks have started gaining popularity and preference nowadays, as they are lightweight and more durable than solid hollow blocks.
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