Reinforced cement concrete – Working and limit state method
Reinforced cement concrete design methods 1. Working stress method 2. Limit state method… Uses of RCC, Properties of RCC, major books..
Category: CONCRETE
Reinforced cement concrete is a topic you will need to familiarize at some point, if you are into civil engineering field. The category explicitly presents it. Reinforced cement concrete (RCC), a composite material has been accepted worldwide as a construction material, bridges, retaining walls, docks and harbour, airfield pavements, flyovers,multi-storey building,complexes and simple houses etc., Concrete is good in resisting compression but is very weak in resisting tension. Hence reinforcement is provided in the concrete wherever tensile stress is expected. The best reinforcement is steel since the tensile strength of steel is quite high and the bond between steel and concrete is good. As the elastic modulus of steel is high, for the same extension the force resisted by steel is high compared to concrete. However in tensile zone, hair cracks in concrete are unavoidable. Reinforcements are usually in the form of mild steel or ribbed steel bars of 6 mm to 32 mm diameter. A cage of reinforcements is prepared as per the design requirements, kept in a formwork and then green concrete is poured. After the concrete hardens, the formwork is removed. The composite material of steel and concrete now called R.C.C. acts as a structural member and can resist tensile as well as compressive stresses very well. Aggregates are the inert or chemically inactive materials which form the bulk of cement concrete. These aggregates are bound together by means of a cement. They can be classified into two. The selection of aggregate is based on the purpose and its maximum size.
Quality Tests on Concrete-Slump test
WHAT ARE THE QUALITY TESTS TO BE CONDUCTED ON CONCRETE IN THE PRODUCTION STAGE, HARDENED STAGE & ON STRUCTURES
READY MIX CONCRETE-OVERVIEW
WHAT IS READY MIX CONCRETE, MANUFACTURING PROCESS OF RMC ,WHY READY MIX CONCRETE IS PREFERRED IN QUALITY CONSTRUCTION? WHAT ARE THE DISADVANTAGES OF RMC
Prestressing methods in Prestressed Concrete – Types and methodology
The prestressing in Prestressed concrete is done by inducing predetermined compressive stresses to concrete by tensioning the steel, before subjecting it to service loads. In prestressed Concrete the stress developed during the service stage is countered by the already induced compressive stresses.