Increase the chance of survival during seismic activity, Lower Environmental Impact (Use of fly ash). 1.1 This specification covers autoclaved aerated concrete (AAC), a cementitious product based on calcium silicate hydrates in which low density is attained by the inclusion of an agent resulting in macroscopic voids, and in which curing is carried out using high-pressure steam. 50kg of AAC Block Adhesive thin bed morta r with Approx. A low density and excellent insulation High density and lower insulation property properties due to high porosity. resulting in efflorescence. They are manufactured with advance machine and technology which uses heat and pressure method known as autoclaving to cure. List given hereunder is not to be considered as conclusive and is for reference and guidance only. Lime – 8%. 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 has a very porous structure which is characterized by "macro" pores. AAC was developed in 1924 by a Swedish architect, who was looking for alternate building material with properties similar to that of wood – good thermal insulation, […] Sound Proof: AAC blocks have been an ideal material for the construction of walls in the auditorium, hotels, hospitals, studios, etc. Block sizes are equivalent to 9 conventional bricks (600x250mm). 30% reduction in air-conditioned load, Sand/Flyash used around 60 - 70 % which reacts with Lime & Cement to form AAC, Soil is used which contains many inorganic impurities like sulphates etc. Different between slow sand filter(SSF) and rapid sand filter(RSF). 80% of the volume of an AAC block is air. Starken AAC blocks are easy to work with and can be cut to size with a tungsten carbide-tipped handsaw. So, clay brick is preferred. AAC Blocks are generically lightweight due to the aeration process in the concrete during production allowing it to achieve a density of 480kg/m 3. It produces at least 30% less solid waste than traditional concrete. When the foaming agent is diluted with water and air, further it is mixed into the cement slurry. Hence AAC blocks are a more eco-friendly product for construction. 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Thickness : 100mm, 125mm, 150mm, 200mm, 225mm & 300mm : Shape : Rectangular : Brick/Block Color : Gray : Size (Inches) 24 x 8 x 4 : Material : Cement : Application : Industrial and Civil Constructions : Product Description. Thus, AAC blocks have … Easy laying and workability. Installation during rainy season leads to crack after installation. C595/C595M Specification for Blended Hydraulic Cements. AAC block is alternate materials for building materials that have similar properties as wood. 3. Cellular lightweight concrete: - Foam concrete is a mixture of cement, fly ash, sand, water and foaming agent. Saving on Steel up to 15%. C332 Specification for Lightweight Aggregates for Insulating Concrete. Zero Saving. When we mix the aluminum powder with silica or other material containing silica, there is the formation of hydrogen gas. Increases workability, allows accurate cutting, Termite resistant (does not affected by termite like in timber), Earthquake resistant and design flexibility. … The Sound Transmission Class (STC) rating of the AAC blocks up to 45 db. Therefore, absorption of water into the AAC material is minimal. C1692 Practice for Construction and Testing of Autoclaved Aerated Concrete (AAC) Masonry (For structurally reinforced AAC product, steel rebar or mesh is also placed in mould.). Cost. In this article you will get introduction, composition, manufacturing and AAC blocks specifications. C618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete. 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. Need less due to less number of joints, flat and even surfaces Need more because of uneven surface and excess number of joints. Follow ANSI Specification AN-3.8 ³Requirements for Expansion Joints ´ or TCA Detail EJ171 ³Expansion Joints ´. What Is AAC Block? Standard size of AAC block & price in india AAC block size in india:- AAC Block size in India are regular size is 600 mm × 200 mm × 100 mm and in inches is 24″ × 8″ × 4″ (length × height × width). They are normally 9-12 kg in weight depending upon moisture conditions. Product Specification. Shreesha Building Solution started in the years 2005, are one of the foremost wholesalers with an extensive array of AAC AEROCON Blocks.Our offered range consists of best grade Autoclave Aerated Concrete Blocks, and AAC Block Trowel. Then, the hydrogen gas escape by leaving voids in between concrete, and this mould is removed and cut into small pieces (Waste during cut can be recycled). Take water in the container and slowly add the powder into the water while mixing by hand or slow speed mixing machine. Do not cover expansion joints with mortar. Sound proof The porous structure of the AAC blocks results into enhanced sound absorption. But AAC blocks minimize the disadvantage of using timber as a construction material. Usage reduces overall 60% dead load of a building, thereby allowing the construction of high-rise buildings. Brittle nature, so handled and transported carefully. AAC block is a special type of concrete block made up of fine aggregates, Portland cement, water, and another expansion agent (Aluminum powder). 2. Technical Specification of Autoclaved Aerated Concrete (AAC) Block Know the Technical Specification of AAC Block like Size, Compressive Strength, Thickness, Dry Density, Sound Absorption, Thermal Resistance, Heat Transmission and Drying Shrinkage etc. Such a process is called aeration. Suitable for use in areas with extreme temperatures. Breakage. Low weight, high strength, dimensional accuracy. 2. Reduces a dead load of building on the foundation. Resistant to termite attacks: Autoclaved Aerated Concrete (AAC) Block consist of the inorganic material in its constitution which helps to avoid termites attacks that happen in the case of clay bricks. The temperature of autoclave has reached about 190° Celsius and pressure about 8 bars to 12 bars. Used in commercial, industrial and residential applications. significantly reduced heating and cooling cost. Each block is equivalent to 7 pieces of common brick. The combustible, decay, and termite damage can be totally removed using this block. On … It is a known fact that when the prepared block is cured in Autoclave and in high steam to help the blocks reach its desired strength that almost describes the composition that blocks are so famous for. In absence International Standards shall be followed. It has a density of 600kg/m3 and is particularly lightweight. C150 Specification for Portland Cement. AAC material conforms to ASTM C1693, and AAC masonry blocks are available in a variety of sizes. AAC blocks are precast, lightweight autoclaved aerated concrete and is a concrete building material which is used for producing concrete masonry units like blocks & under heat and pressure, AAC products are cured and composed of quartz sand, lime, water, cement, aluminum powder and … Fig.1 AAC block 2.2. Mixing : Use approx. AAC Block: Clay Brick: Size: mm: 600 x 200 x (75 to 300), 230 x 75 x 115: Size Tolerance: mm ± 1.5 ± 05 to 15: Compressive Strength: N/mm 2: 3 – 4.5 (IS 2185 part 3) 2.5 to 3.5: Normal Dry Density: Kg / m 3: 550 – 650: 1800: Sound Reduction Index: Db: 45 for 200 mm Thick Wall: 50 for 230 mm Thick Wall: Fire Resistance: Hrs. Serial No Dimension of AAC Blocks(L X H X B) Cubic Meter of a AAC Block No.of AAC Blocks in 1 Cubic Meter Weight of a AAC Block; 1: 600*200*075 MM : 0.00900 ASTM C1660 Standard Specification for Thin-bed Mortar for Autoclaved Aerated Concrete (AAC) Masonry ASTM C1691 Standard Specification for Unreinforced Autoclaved Aerated Concrete (AAC) Masonry Units So it is renamed as aerated. 3. Each block is equivalent to 7 pieces of common brick. Let us start from the introduction of AAC blocks. SPECIFICATION brikoliteadmin 2017-09-04T10:39:39+00:00. Aluminum powder – 0.07%. Requires more due to irregular surface and more number of joints. Rebar or mesh is also placed in mould. ) for construction, lower Environmental Impact ( of. Depending upon moisture conditions about 1/5 lighter than concrete in volume materials we to. And install mixture of cement, sand, water and foaming aac block specification is diluted with and... 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