Specialities of Light Weight Concrete Blocks

Before the invention of the first lightweight concrete blocks, the construction industry used solid masonry bricks. They are strong and fire-resistant building materials, but the problem is that they are too heavy that they are difficult to work with. Thus, when lightweight concrete blocks arrived, they have revolutionised the construction industry. Many residential and commercial builders prefer to use lightweight concrete blocks because they bring a lot of benefits, such as:

Easy workability

Lightweight concrete blocks offer efficiency because of their density or weight per unit. A normal concrete block is around 2240 to 2400 kg/m³, whereas a lightweight concrete block is between 1400 to 1800 kg/m³. Construction can be finished faster because these blocks are easier to install. In fact, with lightweight concrete blocks, builders are able to proceed with difficult designs and plans which would have been impossible if normal blocks were used.

Reduced construction cost

Companies save greatly on costs—from transportation to construction—by using these blocks. Since they are lighter, they can be transported in larger batches. Thus, companies save on the delivery of materials. And since the structure is relatively lightweight, there is no need to add columns and other structural elements for weight support. Lightweight concrete blocks, therefore, reduce overall project costs.

Thermal insulation

Lightweight concrete blocks are especially beneficial for building roofs and walls because they have excellent thermal insulation. If you use aerated concrete, you can expect thermal insulation that is four times greater than bricks.

Lightweight concrete blocks are often more expensive. Nevertheless, their hefty price is offset by the number of benefits they provide. You should take note, however, that lightweight concrete blocks are created differently. Their advantages and quality may vary according to type or brand.

Having said this, it is important that construction builders research on the various types and brands of lightweight concrete to choose the one that exactly meets their needs.

Concrete Blocks: Benefits of Using Light Weight Concrete Blocks

Lightweight concrete blocks have revolutionised the construction industry. They are often preferred by builders of houses and construction companies because of their many benefits. Take note, though, that those advantages may vary according to the type of concrete used. After all, lightweight concrete can be manufactured in different ways. They are classified as foamed, aggregated, and AAC (autoclaved aerated concrete.) The general advantages of lightweight concrete are the following:

· Efficient

As the name implies, the main advantage of lightweight concrete is its density or weight per unit. They weigh between 1400 to 1800 kg/m³. This directly affects labour process and time, allowing builders to finish their projects faster.

· Lower Cost

Construction companies can realise great savings when using this type of concrete because the units are transported in a larger amount. With lightweight concrete, the designer of the structure can reduce the sizes of the columns and other structural elements. Therefore, the large investment cost of this concrete is offset by the reduced volume of concrete needed. 

· Reduced dead load

The structural load of a building or a house is a factor that must be considered during design. This is especially important in tall buildings. Lightweight concrete is ideal for most constructions such as floors, external cladding, and partition. They make it possible to build structures with unique designs that could have been rejected otherwise because of weight restrictions.

· Durable

Durability is also  an issue with lightweight concrete because they can have the strength and characteristics of a normal weight concrete.

· Better thermal insulation

Lightweight concrete allows builders to create comfortable and sustainable structures. A 125 mm wall made of AAC blocks can provide four times thermal insulation than a 230 mm wall made of red clay brick.

It pays to evaluate all your options when you are in the market for an AAC contractor in India. Some of the things that you should check to get an idea of the quality of the company's AAC blocks include their customer testimonials, recent projects, awards, and recognition.

Important Tips While Choosing Block Manufacturers in India

India is one of the leaders in the development of efficient construction and building materials, and one of its most popular innovations is the AAC block. Much has been said about the benefits of this newer type of blocks as well as its advantages over red brick. However, little is known about the manufacturers. Choosing the AAC blocks manufacturers in India is critical to ensuring that you will get high-quality products to use in building truly strong and durable structures. Need help in selecting a reliable and reputable manufacturer or supplier of these construction materials from India? Here are some of the essential tips to keep in mind.

1. Find out more about the manufacturer's history and locations

For practical reasons, you will want to work with an AAC blocks manufacturer that has offices in the north and west, such as in Mumbai and in Haryana. Make sure that they use a synchronized delivery chain so that your orders can be delivered to you fast and efficiently. The history of the manufacturer is also important because longevity says a lot in this industry. It also shows how they are dedicated and committed to helping their clients.

2. See what other products and services are they offering

The best AAC blocks manufacturers in India also offer other products such as adhesives and ready-mix plasters. They likewise offer value-added services and complete solutions.

3. Ask how they make AAC blocks

The kind of technology they use is essential in ensuring timely delivery. Aside from this, it also determines the quality and consistency of AAC blocks they make. You should find this information on their website.

4. Find out who their clients are

The best manufacturers are proud to show a portfolio of finished buildings that used their AAC blocks. They can also give you references that you can call from their long list of satisfied clients. You can even visit the finished buildings made using their blocks to check the quality yourself, if you wish.

AAC Industry of India– Scenario

Building green and using eco-friendly materials for construction has been gaining popularity, and a growing number of AAC blocks manufacturers have sprung up to meet the demand. The industry is facing many challenges in terms of costs, but key players remain optimistic.

Challenges for the AAC Industry

Autoclaved Aerated Concrete or AAC blocks have been around in India since 1972, but it wasn’t until 2010 when manufacturing and production started ramping up—around the same time the popularity of green building materials started growing. Even with all the positive benefits that AAC blocks delivers, it is faced with a number of challenges that cause its limited use as a building material.

The preferred raw material for AAC blocks is fly ash or pond ash—a by-product of burning coal that is composed of silicon dioxide, aluminium oxide and calcium oxide. This inorganic mix is ideal for processing into blocks. While the material itself is cheap, transportation ramps up the costs, as fly ash in India has to be transported from 300km away. Sand—another component for making AAC blocks—is not easily accessible due to legal and environmental concerns, and this likewise drives the prices upwards. The relatively high cost compared to conventional fired blocks ultimately limits the accessibility of AAC blocks, which is why they are often utilized only in high rise construction and higher-end projects.

Overcoming the Issues

To remedy this, a campaign for greater awareness of the benefits of AAC materials is essential. The campaign needs to focus on boosting the popularity of AAC as a building material that is more efficient, durable, and practical in the long term.

Legislation to support the sourcing of materials will also contribute to driving costs down, making AAC more accessible for everyone as the supply is guaranteed and the prices become more affordable. Mandatory recommendation for the use of AAC materials for schools and institutional construction work can also boost usage.

Standard Size Available in Light Weight Bricks

Today’s construction technology offers a myriad of options when it comes to building materials. Traditional components have been improved upon to meet the growing and changing demands and requirements of modern structures. As building projects go higher and the need for robust but cost effective building materials arise, light weight bricks have been developed as a solution.

Light weight concrete bricks or Autoclaved Aerated Concrete (AAC) blocks are similar to conventional hollow building blocks but with a few added features and improvements. AAC is designed to be 80% lighter than conventional blocks while keeping the same strength, making them ideal for high rise buildings and structures. These blocks come in 625 mm lengths by 240 mm height, and are available in 90 mm, 100 mm, 150 mm, and 200 mm thicknesses. They are noticeably larger in length and height compared to conventional blocks, so laying them is easier because fewer blocks are needed for the same area coverage as regular blocks. Fewer blocks does not only mean easier and faster laying—it also translates to lower material and labor costs.

Despite its lightness, AAC blocks retain a good amount of strength, with a rated shear strength of .06 and a compressive strength of 3 N/mm2.  AAC blocks also have better acoustic properties for better soundproofing, as well as better thermal qualities that make them really good for insulation. They are likewise rated for fire resistance and are able to withstand temperatures up to 1200 degrees Celsius before failing. They are also impervious to water and have a low absorption rate, so they are moisture barrier materials for basements and below-ground applications (with little to no waterproofing necessary). AAC blocks are also certified for LEED compliance and are worked the same way as regular blocks, requiring no special tools or equipment.

Know How to Lay Light Weight AAC Concrete Blocks

The benefits of light weight bricks can be better experienced by employing the right techniques for laying the bricks. While the general rules of construction apply to all types of construction material, it is important to take care in certain specific areas. For instance, the thickness of the joints, the method of laying etc. are different from conventional techniques and it is best to understand and incorporate the techniques for harnessing better results. Take a look at better masonry with light weight concrete blocks.

Laying directions

The laying direction for the light weight concrete blocks could begin from either end or corner of the structure and meeting up midway. Alternatively, the laying can commence from one end and proceed to the other corner. However, it is important that the first row is laid with great care after ensure that the surface is properly leveled and aligned. The use of a plumber’s line or other equipment to ensure leveling and alignment is mandatory.

Dispensing with the need to soak the light weight bricks

Unlike traditional bricks, it is not necessary to soak the light weight bricks in water before laying. All that is required is a dampening the surfaces slightly. This is different from soaking the bricks entirely in water. This ensures that the speed of laying the bricks is faster than the conventional bricks. The right ratio of bonding or plastering material needs to be ensured. The ideal ratio is 1:6 for bonding which will ensure that the construction is of the right quality with better durability.

Laying of mortar and joint thickness

This is perhaps one of the most important aspects of construction. The mortar needs to be laid at the right time. Prior to the laying of the bricks, the mortar needs to be spread with the right consistency. The thickness of joints should ideally be 10 mm which will lend great strength and bonding to the bricks. Uniformity of the mortar is crucial to ensure that the alignment is perfect. The actual laying of bricks needs to be done with the right amount of pressure for a firm grip and better bonding.

Using AAC Blocks for Manufacturing Building Structures

AAC blocks have made their way into most construction by virtue of being one of the most durable and economical product to hit the construction industry. The precast solutions available to builders are numerous as AAC blocks manufacturing offer various options for the construction sector. Precast solutions in the form of non load bearing panels and walls, make construction a lot easier and quicker. With options offering solutions for virtually most requirements, AAC blocks manufacturing units offer quick erection of buildings and structures that are not just economical, but offer a pleasing façade. Profiled herein are some of the different ways in which precast solutions help in quick completion of structures.

Fast erection of stairwells

Buildings without stairwells are a rarity. However, the construction of staircases take up considerable time and effort as it is a specialised job calling for making allowances in the configuration as the building construction progresses. This time consuming activity will most likely have a bearing on the completion of the building itself as no structure can be considered complete when the stairway remains incomplete. Additionally, stairways are also used for carting construction materials to the upper floors of the building. The use of precast staircases will help to greatly cut down on the time required for construction, while also offering an economical option.

Beams, and columns for structures

The skeletal structure of buildings incorporate beams and columns around which other construction activity proceeds. With precast solutions in beams and columns, it is possible to create the perfect complete structure for commercial buildings in great speed. Offering better stability, and improved resistance to fires, the precast solutions help in constructing a framework around which other precast solutions can be incorporated for quick completion of project with greater durability. Mega projects around the work have been completed in record time through the use of precast solutions and it makes a lot of sense to rely on the same technology and concepts to build superior structures. A combination of various precast solutions can be deployed to get the right design and build a superior structure.

Make Durable Home to Withstand In Any Climate with AAC Bricks

AAC blocks are considered as marvels that have ushered in innovation in construction material. With manifold benefits that stretch across all activities in the construction, the blocks have rung in changes hard to ignore. The lightweight wonders have replaced the traditional bricks with greater savings in cost, not to mention the eco-friendly nature of the product. Some of the reputed aac blocks manufacturers in India possess world class facilities with huge capacity to meet the needs of a growing construction industry. Here are compelling reasons that prove AAC blocks to be the best suited for homes across all climatic conditions.

Will not rot easily with constant exposure to damp or wet conditions

The structure of the AAC blocks make them resilient and strong, with a capacity to withstand the vagaries of nature. Wet and damp conditions throughout the year are the biggest enemies of traditional bricks. The sodden bricks tend to lose their strength and give way to rot. However, with AAC blocks, the formation of the honeycomb structure with air, cured by high pressure steam renders them strong to ward off the effects of wet climatic conditions.

Cooler interiors during summers

The volume of air in the AAC blocks makes interiors cooler. The fire rating of the blocks, the shear strength, the water absorption and all other attributes make the blocks most suitable as construction material for homes. Offering the highest degree of safety when compared with other construction materials, AAC blocks are considered as the innovation that has truly given a fillip to construction.  Homes are cooler in summers and are more fire resistant, making the living spaces more safe to occupy.

High compressive strength gives the blocks greater capacity for loads

The compressive strength of the blocks lend the blocks greater capacity for loads. This makes buildings sturdier blowing away apprehensions of a building that may be compromised by heavier structures. Additionally, the buildings are also insulated from noise on the exterior. This makes homes more enjoyable to live in. Depending on the area of the residence, some homes may have to put up with heavy noise levels, and it surely helps to have a noise free atmosphere.

Things to Keep In Mind While Choosing Light Weight Brick

The winds of change sweeping through architecture and construction have replaced heavy construction material with light weight and stronger materials. And the light weight brick has come to replace the traditional heavier bricks in a manner that has revolutionized construction. The light weight bricks have brought down construction timelines, saved the amount of mortar used, while offering superior strength and thermal qualities that protect the occupants of the building. Listed below are a few points that need to be borne in mind while choosing the right light weight brick for your needs.

ISO Certification of manufacturer

ISO certification is an indication of high standards in processes and this will reflect in the quality of the manufactured products.  AAC blocks manufactured by an ISO certified company would offer all the advantages without any dilution whatsoever of the qualities, such as high strength, acoustic properties, thermal insulation, energy efficiency etc.  Most of the parameters required to check the quality of light weight bricks are all factored in the processes that are covered by ISO certification.

Steady supply of raw materials

AAC blocks require raw materials that are by products of thermal plants.  Reputed manufacturers of AAC blocks locate their manufacturing facilities within short distances of thermal plants. This will ensure that they receive a steady supply of raw materials to enable smooth manufacturing processes.  Manufacturers who are unable to source raw materials may have to compromise with available materials and this may reflect on the quality of the output. The choice of light weight blocks over traditional bricks is mainly due to the qualitative difference. Poor raw materials may affect the quality.

Technical knowledge and manufacturing capacity

Manufacturing facilities that have high capacities would follow automated processes. This would be a better choice than small makeshift facilities that manufacture the blocks. AAC blocks require the use of the right processes to ensure that the blocks are state of the art products. The personnel manning the machinery and equipment need to be adequately trained to maintain consistent high standards. Choose AAC blocks from manufacturers who rely on highly trained manpower to man the facility.

7 Benefits of Using Light Weight Bricks

Urban and semi-urban skylines are increasingly dotted with high rises and massive structures.  This is a testament to the rapid advances in building materials and processes. Lightweight construction materials have begun to be widely accepted for the benefits and advantages offered.  These advanced lightweight bricks have replaced conventional bricks meeting all structural and safety requirements. Explore seven of the numerous benefits that lightweight bricks bring to the structure and stakeholders.

Lesser deadweight of structure brings overall costs down

One of the biggest advantage has been the reining in of costs. Lightweight bricks weigh around 70 to 80% lesser than conventional bricks. This has a positive cascading effect on other costs towards construction. For instance, the amount of steel and cement that goes into a building is also determined by the amount of required support to the structural weight.

Construction without depletion of soil resources

The raw materials that go into the manufacture of light weight bricks is fly ash. This is in contrast with the raw materials that go into conventional bricks, which uses up top soil. The highlight of lightweight bricks manufacture is the use of industrial byproducts, a sign of responsible manufacturing.

Greater strength gives solid support to high rises and large structures

Lightweight bricks have greater strength than conventional bricks. This can be seen from the huge difference in the pressure units’ comparison between the two. Regardless of the size of the building, it is important that all construction materials are stronger so as to take greater load. Stronger buildings are more secure for inhabitation and businesses, to protect occupants from the fury of nature. 

Keeps pesky pests away

One of the biggest problems faced by buildings are invading pests that seem to find their way everywhere. The raw materials that go into lightweight bricks and the processes ensure that pests are uninvited. A building that is free from pests is always a better place to reside or work.

Swift completion of projects

One of the biggest issues faced by contractors is the amount of time that goes into the completion of projects. Conventional bricks require a huge logistics effort, in addition to the time required for laying them and the time required for masonry.  Lightweight bricks are bigger in size, measuring more than three times the size of conventional bricks.

Water resistant to keep water from seeping in

When nature unleashes its fury, distinctions are not made. The use of light weight bricks will help keep the waters from seeping into buildings. This is because of lesser water absorption as a consequence of the structure and materials used in the manufacture of light weight bricks.

Higher thermal insulation with greater benefits

Light weight bricks have greater thermal insulation. This means that HVAC bills can be kept at its minimum. Additionally, structures with greater thermal insulation offer greater safety when exposed to the risk of fire. For a fire retardant surface, lightweight bricks are an unrivalled choice when compared to conventional bricks.