Concrete Mixing Techniques for Strong Structures
Concrete Mixing or Mixing of concrete is the complete blending of the ingredients necessary for the production of a homogeneous concrete.
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.
Ultrasonic pulse velocity test || UPV Test – Types and Methodology
Ultrasonic pulse velocity test is an example of the non-destructive tests of concrete. Non-destructive tests (NDT) and destructive tests (DT) are the tests done on hardened concrete. Concrete is the oldest and most important construction material in the world.
Column Jacketing: Strengthening Structural Integrity
Column jacketing enhances the load capacity, durability, and seismic resistance of structural columns by adding materials like concrete, steel, and fiber-reinforced polymers around existing columns. This method is essential for retrofitting aging structures, meeting safety standards, and improving resilience against various loads, particularly in earthquake-prone areas.
Shrinkage of concrete – Type, Causes and Remedies
Shrinkage of concrete refers to the reduction in its volume over time, primarily due to moisture loss and chemical reactions during hydration. This phenomenon can lead to shrinkage cracking of concrete, compromising structural integrity and durability. Understanding what shrinkage of concrete is involves recognizing its various forms, such as drying shrinkage, autogenous shrinkage, and thermal shrinkage.
Ribbed concrete slab or Waffle slab -Construction, Advantages
Waffle slabs are ribbed reinforced concrete slabs. A waffle slab often referred to as a ribbed slab, is a structural component that is plain on top and has a grid pattern on the bottom. A waffle slab also called a two-way joist slab got ribs running perpendicular to each other in two directions on the underside. This slab resembles pockets of waffles because of its grid pattern. Hence they are named Waffle slab systems.
Concrete Compressive Strength Formula: A Comprehensive Guide
The concrete compressive strength formula is fundamental. It calculates how well concrete can resist axial loads without failing. Concrete compressive strength formula is crucial for determining the strength of concrete structures. It also ensures the durability of buildings, bridges, and roads. The formula for concrete compressive strength is expressed as fc = P/A. Here, P is the applied load. A is the cross-sectional area of the concrete specimen. To ensure accuracy, concrete compressive strength testing methods follow strict guidelines.
Destructive tests (DT) on hardened concrete – Significance and Types
Destructive tests (DT) and Non-destructive tests (DT) are the tests done on hardened concrete. Concrete is the oldest and most important construction material in the world. Testing of the concrete plays an important role to know the strength, durability and condition of the structure.
Self Compacting Concrete (SCC)-Ingredients and Advantages
Self-Compacting Concrete (SCC) is a high-performance, self-leveling concrete that flows effortlessly without external vibration. It improves workability, reduces labor costs, and enhances structural quality. Its advanced mix design includes aggregates, cement, and superplasticizers. SCC is ideal for complex structures and offers durability, sustainability, and efficient placement techniques. Enhanced performance trends continue through ongoing research.
Curing of Concrete – Concrete Curing Methods explained
Curing of concrete is the process of maintaining requisite moisture and temperature in hardened concrete for continued hydration. The curing of concrete plays a prime role in maintaining the design strength and durability of concrete. This article explains the significance of curing, and the types of curing methods prevailing in construction sites.
Construction Joints in concrete – Construction joint types in slabs
Construction joints in concrete are a crucial and fundamental component of civil engineering and construction. Changes in temperature and moisture can cause concrete to expand and contract. Because concrete is weak in tension, shrinkage and volume change in concrete cause cracks.