Eco-friendly Hollow Concrete Blocks Our first venture into the building products business, these blocks have gained widespread acclaim. Bti produces 6.5 million concrete hollow blocks annually in a world-class manufacturing factory located in Dhamrai. The blocks are smooth and encased into brick-shaped structures, with a hollow center that prevent heat and sound. They interlock with each other, requiring less mortar, and hence, greatly reducing construction costs. There are different types of blocks, depending on thickness, such as 110 mm, 100 mm and 90 mm. These blocks are better than the traditionally used red clay bricks in Bangladesh for a number of reasons. Concrete hollow blocks have lower salinity compared to bricks, which means higher durability and resistance to humidity. During the monsoon season, often bricks are unavailable because of damage due to humidity, but since these blocks are humidity resistant they can be found all year round, which reduces construction costs and saves a lot of time! While bricks cannot be strengthened further, hollow blocks can be further developed with cement or other materials. So it is safe to say that concrete blocks are much stronger, time-saving and cost-effective. Electric cables can pass through the cavities very easily. Bricks are affected by their chemical composition and deteriorate over time. Manufacturing them produces large levels of toxic fumes, but not our machine-made concrete blocks! Also, five bricks can be replaced by one concrete block, which will still cost less than five bricks. The blocks also help to reduce the overall weight of the building, making the foundation and superstructure more earthquake resistant and stable. Finally, these blocks are highly multifunctional. You can use them to build residential buildings, commercial spaces, internal partition walls, architectural decorations, and interior designing. For a developing country like Bangladesh, concrete hollow blocks solve most construction problems.