Its manufacturing enquires little energy as compared to other materials for walling. At CivilSir, we share all the information related to civil engineering. ◆ 12) AAC Block are light weight and durable and can withstand extreme earthquake condition. ◆ 14) AAC blocks made in uniformly and can be cut and shaped according to required in construction. LTD Build light Committed to Excellence…. AAC is well suited for high-rise buildings and those with high-temperature variations. I started this site to spread knowledge about Civil/Mechanical/Electrical Engineering. • Reduces operating costs by 30P/0 to 40%. See my answer on the cracking of the AAC block wall. Your email address will not be published. But AAC blocks minimize the disadvantage of using timber as a construction material. Autoclave Aerated Concrete (AAC) AAC blocks. AAC block provides exceptional acoustic insulation. 2. ● 1) Brittle nature: it has some brittle nature ,they need to be handled more carefully than clay bricks to avoid breakages. They are normally 9-12 kg in weight depending upon moisture conditions. Minimal wastage of AAC blocks. Result . Disadvantages of AAC over CLC blocks: Manpower and Investment: An AAC plant has large equipments and needs more manpower than the CLC plant. Cement; FlyAsh; Lime; technical Specifications of AAC blocks . The actual dimensions are 7 7/8” x 23 7/8” to allow for 1/16” to 1/8” thin-bed mortar joints. AAC blocks have brittle nature; therefore, they require more care than clay brick while handling and transporting. Jumbo blocks are available in 24” X 24” and 32” x 24” sizes. 3. Cement (usually OPC grade 53) -33%. ◆ 19) Due to Light Weight and Earthquake resistant also comfortably worked and highly insulating and less water penetration and environmental friendlily also fire resistant and incombustible. Brick,brick size, brick types and brick masonry calculation, Compressive and tensile stresses in structural members, Minimum flooring thickness in any residential building, How to calculate cutting length of bent up Bar(crank bar), 1 ton 10mm 20mm & 40mm aggregate convert to cft. Benefits of AAC blocks by NXTBLOC. Hence, building built by AAC blocks almost 80 % water-resistant. AAC is a highly thermal insulating concrete based material used for both internal and external construction and are Light weight, Energy efficient, Fire and Sound Proof, Easy to install, handling and Environmentally certified Green concrete product as it is also Ecological and Recyclable product. Per unit AAC block production cost is higher. The combustible, decay, and termite damage can be totally removed using this block. Hey, I am Krunal Rajput. The materials used in the production of these blocks … What is the column size for 2, 3 and 4 storey building? Disadvantages Of AAC Blocks: There are following disadvantages of AAC blocks such as; Cracks in walls. Aluminum powder – 0.07%. The production cost per unit for AAC is higher than other ordinary concrete. Raw Materials Required for Producing AAC blocks. And wet density of 1st class is about 700 -800 Kg/m3. Autoclaved aerated concrete begins with the same process used to mix all concrete: Portland cement, aggregate, and water are mixed together to form a slurry. AAC has excellent thermal insulation and acoustic absorption properties. AAC block cut down on construction time by 25 % due to its dimension, lightweight, and leas number of joints. Least carbon footprint with a potential offset of 0.8 tonne CO2 per m3. August 19, 2020. In India itself AAC has potential to avert 200mn tones of CO2 emissions into environment – a saving of $20 bn every year. Aerated concrete blocks have been tested in colder climates and have proved to have a high resistance to frost. Needs care during manufacture, so that final surface of the aerated concrete is not too smooth. Usually the manufacturer mentions the coverage area and it varies from brand to brand. as this make it more difficult to apply finishes. Applications of AAC blocks; Advantages; Disadvantages; FAQ’s. How Aerated Concrete Is Manufactured . How many AAC blocks present in 10 cubic metre ? Sound Proof. Magicrete AAC Blocks ₹ 3,450/ Cubic Meter Get Latest Price. Perfect Size & Shape. AAC blocks use less material than conventional concrete block, making them more environmentally friendly. For load-bearing walls, not suitable perfectly. AAC block adhesive is a polymer-based versatile jointing material specially designed to provide high bonding, durability and speed up the build process of AAC blocks, fly ash bricks, concrete blocks, etc. Shrinkage in blocks or poor quality of blocks may also cause a crack in a wall. Modulus Of Elasticity: 2040 MPa. The effect of earthquake is proportional to the weight of the structure. First a fall, autoclaved aerated concrete is produced by mixing silica or sand or fly ash with cement, lime, water, and expansion agents such as aluminum powder. AAC material conforms to ASTM C1693, and AAC masonry blocks are available in a variety of sizes. AAC wall has an excellent Sound Transmission Class(STC) rating of 44. Both AAC and CLC blocks are made using cement, flyash, sand and foaming agent. Common Disadvantages of AAC Blocks: One of the most innovative types of concrete products, the autoclaved aerated concrete blocks contain … Therefore, it is quite expensive and needs more capital investment than CLC plant. AAC block is alternate materials for building materials that have similar properties as wood. The porous AAC structure comes from being "leavened" with aluminum. 1) AAC Block is Non load Bearing material, it can be used only in wall partitions. For load-bearing walls, not suitable perfectly. Thermal Conductivity: 0.16 w/m0K. Resistant To Fire. Because of its smooth surface plaster sometimes does not stick properly. Another building material we have used in GreenWay Subdivision is autoclaved aerated concrete blocks (AAC blocks) for exterior walls. Required fields are marked *. • Reduces overall construction cost by 2.5% as it requires less jointing and reduces the need for cement and steel. So, the blocks have gained wide popularity in high rise residential and commercial constructions. • Wall painting and plastering last longer as almost nil efflorescence affects (Brand Name). Hence it is popularly used as a green product. AAC blocks offer unmatched acoustic insulation. 4. Although the advantages of AAC blocks far outweigh its disadvantages, it does have following notable disadvantages: Cracking in walls: we need to take precautions to eliminate drying shrinkage cracks and stress concentration cracks. 1) What is the cost of each block? AAC material conforms to ASTM C1693, and AAC masonry blocks are available in a variety of sizes. Autoclaved aerated concrete (AAC) is a lightweight, precast, foam concrete building material suitable for producing concrete masonry unit (CMU) like blocks. In 1978 LCC sSIPOREX” plant started in Saudi Arabia. AAC Blocks manufacturer with abundant makes use of Fly ash as AAC Blocks manufacturing (which makes it a green Product in the construction industry), unlike conventional clay bricks which use the fertile topsoil which was otherwise used for Agriculture for manufacturing of aac blocks. ◆ 7) there are different size of AAC Block are available in market, but there are four common size are 600mm × 200mm × 100mm,600mm × 200mm × 150mm,600mm × 200mm × 200mm and 600mm × 200mm × 225mm. Raw materials or Ingredients for AAC blocks manufacturing process are cement, sand, lime, fly ash, Gypsum, and Aluminum. Superior Acoustic Insulation . Let us now discuss AAC Block disadvantages, brittle nature, handling,fixing and installation drawbacks. 3) Their water absorption is very high. I am a Degree Holder in Civil Engineering. This reduces the humidity inside the building. … AAC Blocks in the name of concrete are manufactured using the finest grade (Class F) fly ash,gypsum based and other raw materials. MC blocks can be cut easily, drilled easily, nailed easily, and grooved easily. In fact, this type of concrete contains 80 percent air. Thank you very much for sharing these insights! Happy Learning – Civil Concept. Raw Materials Required for Producing AAC blocks. This helps to prevent condensation and other problems that are related to mildew. i.e., shrinkage cracks are more prone in the summer season than the winter. AAC concrete typically is made into blocks or slabs and is used to build mortared walls in a manner similar to that used for standard concrete block construction. The autoclaving process requires significant amounts of energy. 3: Nailing vs. Drilling Solid Concrete Blocks and AAC blocks are used in walls as per their properties, availability and cost. You have to drill for any work in AAC blocks you cannot use nails. It produces at least 30% less solid waste than traditional concrete. Maxseal offers both cost effective and economical for protection of autoclaved aerated concrete. AAC wall provides solid insulation, without the thermal bridging. • Results in smooth walls with perfect contact between different elements. AAC has a reasonable inherent insulation value: 8 inch AAC block: R-8; advantages. AAC blocks being a lightweight subdues any damage by quakes or high winds largely. If you need to fix furniture in the AAC Blocks wall, you need to use a drill bit and a raw plug. The technology used in creating AAC blocks ensure that is blocks are resistant to fire. Basic AAC block in the standard size of 8 x 8 x 24 inches costs about $2.20 to $2.50 per square foot as of July 2018, slightly more than standard concrete block, which costs about $2.00 per square foot. It is a pre-mixed, easy to apply high-quality mortar comprising of cement, graded sand and admixtures which replaces conventional jointing mortar of 12-18 mm […] Staff member. 0. We help brands optimize their online presence & performance. Now, let’s look through 6 disadvantages of aerated concrete: The production cost per unit for AAC Block is … Your email address will not be published. To understand AAC blocks one must understand the basics of foam concrete. So, the blocks have gained wide popularity in high rise residential and commercial constructions. ● 3) Special, large diameter wall plugs are available, though at a higher cost than common wall plugs. Any synthetic foaming agent has a max stand time of 2 hours before the foam starts collapsing. 7. X. Cement; FlyAsh; Lime; technical Specifications of AAC blocks . Disadvantages of AAC Blocks are following:– AAC blocks have brittle nature; therefore, they require more care than clay red brick during handling and transporting. Per unit AAC block production cost is higher. Needs care during production. Use of very fine sand to make mortar i.e., higher silt content or use of sand, which is not graded properly. ◆ 15) More carpet area is available in built up area due to lesser widths of walling and cladding with 100/150 or 200mm against in case of conventional brick masonry. Similarly, the material required for rendering is also lower due to the dimensional accuracy of AAC. Although AAC blocks have few disadvantages like the ones mentioned above, the pros of these blocks outweigh the cons. Although the advantages of AAC blocks far outweigh its disadvantages, it does have following notable disadvantages: Cracking in walls: we need to take precautions to eliminate drying shrinkage cracks and stress concentration cracks. Customers reported lower utility bills. It is composed of quartz sand, calcined gypsum, lime, cement, water and aluminum powder. The brittle nature of the blocks requires longer, thinner screws when fitting cabinets and wall hangings and wood-suitable drill bits or hammering in. it provide greater insulation against heat since they do are not good conductor of heat. Besides their inherent R-value, AAC blocks are lightweight and easy to work. Autoclaved Aerated Concrete block is one of the major achievements of the 20th century in the field of construction. These blocks have … AAC block has exceptional thermal insulating qualities. It is a form of cellular concrete and low-density cementitious product of calcium silicate hydrates in which the low density is … Cellular Light Weight Concrete (CLC) and Autoclaved Airated Concrete (AAC) are basically the same, with the difference of how these are cured. by Aadi. by Aadi. It is a lightweight, precast, foam concrete building material suitable for producing concrete masonry unit (CMU) like blocks. Manufacturing Process of AAC Block. It was patented in 1924 & production started in Sweden city Yxhult in 1929. Photo: H+H UK To read what manufacturers and distributors say about it, you'd think autoclaved aerated concrete (AAC) was some kind of new, AAC Blocks are known to crack after installation, which can be avoided by reducing the strength of the mortar and ensuring the blocks are thy during and after installation. ◆ 10) It is composed of quartz sand, calcined gypsum, lime, cement, water and aluminum powder. Although AAC blocks have few disadvantages like the ones mentioned above, the pros of these blocks outweigh the cons. Although AAC blocks are porous, the pores are not interconnected so the water absorption is relatively less as compared to clay bricks. You can find him on Facebook, Twitter, Tumblr, Instagram and Google News. 3) Which is better CLC (Cellular Light Weight Concrete) or AAC? You CAN’T just put a nail. Drying Shrinkage: 0.04%. There are no toxic gases or other toxic substances in autoclaved aerated concrete. ◆ 9) there are three class of AAC Block, dry density of first class AAC blocks are 651 – 750 kg/m3, 2nd class dry density is 751 – 850 Kg/m3 and 3rd class dry density is 851 – 1000 Kg/m3. Shear Strength: 0.6. ● 2) Fixings: the brittle nature of the blocks requires longer thinner screws when fitting cabinets and wall hangings and wood-suitable drill bits or hammering in. Number of manufacturer is limited. However, External Plastering is recommended for AAC Blocks. Installation during rainy weather: AAC is known to crack after installation, which can be avoided by reducing the strength of the mortar and ensuring the blocks are dry during and after installation. ACC blocks can be easily cut to size by using a saw. What is AAC Blocks? ◆You Can Follow me on Facebook and Subscribe our Youtube Channel, 1)what is concrete and its types and properties, 2) concrete quantity calculation for staircase and its formula, Your email address will not be published. ◆ 2) it is lightweight,precast, foam concrete building material suitable for concrete masonry unit. What are advantages in using of AAC Bricks for building constructions? Through mortar and … In this way, AAC industries slowly started to grow all over the world from 1978 & rapidly cover the market from 2012. Like this post? If you are interested in … Installation during rainy weather aircrete is known to crack after installation, which can be avoided by reducing the strength of the mortar and ensuring the blocks are dry during and after installation. Hence fewer joints results in considerable fast speed construction. 0. Go-Green Nature . How many AAC blocks present in 1 cubic metre ? 2) How many blocks per cubic meter? Upon the introduction of … Whereas, AAC blocks uses fly ash and helps in utilising a waste product. AAC blocks covers areas of 24" x 9" whereas the red bricks cover only 9" x 4" area. Usage reduces overall 60% dead load of a building, thereby allowing the construction of high-rise buildings. Compressive Strength: Greater Than 3 N/mm2 (MPa) Density: 550-650 kg/m3. Also called AAC blocks means Autoclaved Aerated Concrete is now most commonly used for partition walls in building construction. Difference Between Plinth Level, Sill Level, and Lintel Level. Lightweight: AAC blocks are 3 to 4 times lighter than conventional red bricks, therefore, easier and cheaper to transport. Introduction. AAC Block Specifications Composition. ◆ 17) Uniform quality due to mass production in the factory. The Autoclaved Aerated Concrete blocks ever since its introduction in the Indian market have witnessed a massive turn around. aerocon aac block. The cost of chemical depends. ◆ 1) AAC Block Autoclaved aerated concrete. AAC blocks VS red Brick | Properties and uses. It reduces excess dead loads on the … ● 4) Insulation requirements would require very thick walls when using AAC alone. We have over 200 types of industrial boilers, including gas / oil fired boiler, hot water boilers, steam boiler and etc. Introduction to Autoclaved aerated concrete: Advantages of Autoclaved aerated concrete: Disadvantages of Autoclaved aerated concrete: Conclusion: Introduction to Autoclaved aerated concrete: The masonry unit is formed by cutting the soft core … AAC Block advantages and disadvantages, hi guys in this article we know about AAC Block benefits, AAC Block advantages and AAC Block disadvantages. Advantages Of AAC Blocks: 1. Many Architects nowadays prefer AAC blocks for the main reason, it does not add unnecessary weight to the building and gives a best plastering finish. Precision ratio of AAC blocks one must understand the basics of foam concrete almost 80 % water-resistant them!, higher silt content or use of AAC block but now a days it is increasing day by day replacing! 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Temperature at the time of the 20th century in the mid-1920s by Swedish! Mass production in the mid-1920s that simultaneously provides sound proof structure, the are... 14 ) AAC block but now a days it is formed by pouring foam concrete into a then!