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Concrete Engineering

Types of Concrete Finishes

Concrete is a special construction material that is commonly utilized in the construction industry. Concrete comprises the right proportions of cement, coarse aggregate, fine aggregate, and water. Finishing is one of the most important parts of concrete after it has been cast because it gives the concrete’s surface a pleasant appearance. Compressing, leveling, and smoothing the concrete surface is concrete surface finishing.

The most basic concrete finishes are smooth surfaces created with screeds and trowels. Work screed is used to level the concrete surface after being poured in form.
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Concrete Blocks – Types, Uses, Advantages & Disadvantages

A Concrete Block is a ‘Building Block’ composed entirely of concrete that is then mortared together to make an imposing, long-lasting construction. These construction blocks can be ‘Hollow’ or ‘Solid,’ formed of ordinary or lightweight concrete in various specified sizes, depending on the precise requirements. Concrete blocks come in various shapes and sizes, and they can be solid or hollow. 39cm x 19cm x (30cm or 20 cm or 10cm) or 2 inch, 4 inch, 6 inch, 8 inch, 10 inch, and 12-inch unit configurations are the most popular concrete block sizes. Concrete blocks are made from cement, aggregate, and water. In concrete blocks, the cement-aggregate ratio is 1:6.

Types of Concrete Blocks:
There are two types of concrete blocks:
1. Solid Concrete Blocks
2. Hollow Concrete Blocks

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Creep of concrete and their effects

Deformation of a structure due to a sustained load is known as concrete creep. Concrete can alter shape if it is subjected to prolonged strain or stress. This deformation occurs most often in the direction of the applied force. A concrete column compressing or a beam bending are examples of this. Concrete does not always fail or break down as a result of creep. When a load is applied to concrete, an instantaneous elastic strain occurs, which develops into creep strain if the load is sustained.

Concrete’s stress-strain curve is not a straight line, and at a certain value, the strain will continue to increase without a substantial increase in stress. The time-dependent component of the tension that arises as a result of stress is also known as concrete creep.

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Types of cracks in concrete and their causes

Concrete is one of the most durable and long-lasting building materials available. Cracks in concrete can be caused by a variety of factors, including temperature variations, structural flaws, and tree roots. Contrary to popular belief, not all concrete cracks are the same. In fact, determining the suitable type might assist you in correctly repairing the cracks.

Plastic concrete refers to concrete that is still fresh. Even though the components of this concrete are fully mixed when it is in a plastic condition, it is still unable to provide strength. Fresh concrete, commonly referred to as plastic concrete, is a newly mixed substance that can be moulded into any shape. Any of these states can lead to cracks.

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Types of Vibrators Used in Construction

What is Vibrator?
On construction sites, vibrators apply to compact concrete. Concrete vibrators come in many different shapes and sizes. Some Concrete Vibrators are smaller, more efficient, and run on battery power, whereas others are much larger and rely on power lines for power. In vibration, compacting is caused by a reduction in internal friction between various concrete particles due to particle oscillation, resulting in a dense and compact concrete mass. Vibrators work for concrete compaction in the roads, trains, and buildings. It compacts fresh concrete by removing trapped air and excess moisture. Its function is to hold the concrete in place in the formwork. And to ensure proper concrete consolidation and the avoidance of product flaws. Vibration frequencies range from 2800 to 15000 pm.

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