ADVANCED CONCRETE BLOCK
Standard concrete block, or “gray block,” is widely known as one of the most practical, long-lasting and cost-effective material used in building. Due to its strength, durability, and excellent fire rating, concrete block provides a sensible alternative to many other building materials. Advanced concrete block industries supplies concrete block to customers with all types of building needs, including industrial, commercial, institutional and residential.
It is emphasized that this study is an attempt to depict the general perspective and usage of sub-standard basic construction materials in construction industry and infrastructure development in Bangladesh. One of such major basic construction materials are clay bricks (Kiln burnt) and porous low compressed sand cement bricks / block presently being used in everywhere in construction of building, load bearing structures, fencing walls, road works in base-course, edging and pavement work, using as course aggregate (khoa) for all classes of concrete work, river training work, retaining structures and where not.
In tropical country brick walls get quickly heated causing energy loss and uncomfortable. Because of poorly managed brick manufacturing processes in Bangladesh, it never matches with the basic specification requirement set by Bangladesh standards and testing manuals published lastly on 7th Feb / 2007, 2nd revision under specification BDS-208-2002. And perhaps there is none to understand the real impact of using conventional clay bricks in Bangladesh.
All of the said factors and many more untold factors severely affects always causing very poor level of masonry work damaging the durability of structures as a whole, a puzzling and uncontrollable catastrophic situation in making buildings, roads, walls & fences, edges & footpath everywhere. Another catastrophic situation which are much more damaging is use of bricks chips / khoa as course aggregate in concrete making & certainly that cannot or just impossible to attain designed strength of concrete for any kind of structural work by using clay brick chips. The whole infrastructural health thus becoming weaker to withstand any natural calamities, earth quakes or for any sort of phenomena that may take place any moment in Bangladesh. It also causes serious weather pollution causing serious health & hazard, reduces fertile soil in million hectors every year loosing agricultural crops production and produces substandard engineering brick materials for infrastructural development in the country as a whole in addition to many negative impacts.
Concrete bricks is one of the modern bricks used for masonry work in the developed countries and many developing countries as tested, qualified, specified, conforming all of the specifications in U.S.A., Canada all European countries, Japan, partly in China, partly in South East Asia, Australia, part of Africa, the then USSR (CIS countries) and in all modern societies. The concrete bricks materials having the following advantages:
- Low cost, accuracy and uniformity of shape which makes lying and bonding easy.
- Smooth surface and light color makes them suitable for internal walls without plaster
i.e.; factory units, sheds etc.
- Invariably free from efflorescence.
- Unaffected by repeated freezing or thawing.
- Resistance to fire and the transfer of heat and sound is similar to that of clay bricks.
- Its manufacture uses reusable energy and biogas.
- No harmful residues or emissions are produced.