Ribs provide enhanced anchorage in concrete structures so as to hold the structures in place and avoid slippage of the concrete material from the reinforced bars.
Lugs on the TMT bars strengthen the ribbing pattern its angular spacing on the surface of the bar, therefore providing higher interlocking of the bonds formed between the materials.
Together, optimum ribs and lugs design ensure enhanced lifespan of the constructions owing to the strength of bonds formed with the concrete. With advanced and modern structures, the need to maintain high anchorage has been realized and been looked into. This anchorage is provided the unique ribbing and lugs patterns on the surface of the bars that fit perfectly with the concrete material.
Here are the major features affected the lugs and ribs on TMT rods:
Geometry:
The placement of the lugs with the Ribbing pattern on the surface of the TMT bars has been studied for years and is available in different variations to fit the applications. Decreasing height of lugs leads to increasing bending capacity of the bars and Transverse ribs binding in the longitudinal ribs lead to the highest bond, but the lowest bending capacity. The geomtry of the these patterns dictate the bond formation of the bars with the concrete and also the bending capability of the bar, which are major factors to be considered for constructions.
Stability:
Before the manufacturing of deformed bars, the rods available had plain and smooth surface area that had very low bonding with the other materials, which caused structural collapses and cracking of the constructions. With the Steel-makers moving to concrete structures, the need for deformed bars was realized, that warranted higher bonding strength, minimizing the structural failures. The lugging and ribbing patterns on the deformed bars provide superior bonding with concrete therefore reducing the slippage of concrete material from them, boosting stability of the constructions.
Calamity-resistance:
The ribbing patterns forming strong bonds with concrete ensure higher stability of the structures than the plain rods. The sesimic and water activities therefore have least effect on such constructions and cannot pull out the rods from its foundations. With the structural stability and crack-free constructions, the architects and engineers are able to make structures that can minimize danger to life and property from natural disasters, like floods and earthquakes.
Reliable:
With the incorporation of structural patterns (ribs and lugs) on the deformed bars like the strong and dependent TMT bars, stable and strong structures can be built that will last forever. The additional patterns that are included on the surface of these rods, during the manufacturing process of the rods bring in that improved foundation. These strong and reliable foundations can be trusted to keep us and our properties secure.
It is important to keep studying the effect of these structural patterns on the final constructions of the buildings and constructions around the globe and understand the advancements and tweaks that can be carried out to make stronger and reliable structures. At Agni Steels, we take pride in the dedicated and focused Research and Development put into the structural design of the TMT bars that form the foundations of your homes and structures.