Civil construction Chemical Industrial
M. A. Waheed, Technical Director, Perma Construction Aids Pvt, gives an overview aboutthe construction chemical industry in India as specialty products that increase a structure’s life and represent a niche segment in the Indian construction industry. Topics discussed include types of construction chemicals, advantages, Codes and Standards, the global scenario, industry structure, industry trends, economic factors driving change.
From the beginning of twentieth century cement concrete and cement mortar based on ordinary Portland cement, have been accepted as the main building materials for the construction of buildings and the infrastructure, considering the ease, speed and the strength they offer. But this new building material that is the ordinary Portland cement, suffered from some initial drawbacks such as shrinkage cracks and leakages when compared to the then existed lime concrete and lime mortar. So this product needed some modifications to get over its inherent weaknesses, which was achieved by the use of any chemicals. With the increase in demand for bigger, higher and stronger structures in various environmental conditions, the ordinary concrete required further modifications to perform as per the expectations and deliver the end strengths in various climatic and critical conditions. This was again achieved through the addition of chemicals to modify the behavior of cement concrete to give the desired end results. With time the performance demands on concrete increased and research and development of chemicals for modification of concrete became a regular industry which is now known as CONSTRUCTUION CHEMICALS INDUSTRY. To keep with the pace of developments, construction chemicals industry took upon itself to develop products which not only make construction of modern structures possible by imparting easy workability, better strength development characteristics and expected performance in extreme environmental conditions and also to maintain structures through various climates extending their life. Now a concrete admixture has become an essential fifth ingredient of concrete construction and completion of a new structure can’t be imagined without the use of construction chemicals at various stages of construction.
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