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Concrete

What is Ultra High Performance Steel Fiber Reinforced Concrete (UHPFRC)?

July 13, 2017

Ultra-high performance Fiber Reinforced Concrete is a relatively new construction material having minimum coarse aggregate (usually size greater than 6-7 mm is not used) having discrete random steel fibers uniformly distributed across the concrete matrix with the basic strength of above 14,000 psi (100 MPa) in 3 or 4 days that can go upto as high as 25,000 psi at 28 days ultimate…

Tremie Method Of Underwater Concreting

November 7, 2016

Have you ever wondered how the bridges spanning a river of thousands of meters width, stand in the flowing water? How the labor and workers can construct these piers and caissons? How civil engineers can construct piles of several kilometers into the ground by avoiding the…

What happens when super plasticizer is added to concrete?

October 11, 2016

Since from the start the concrete has gone through several tests, experiments and additions in order to make it suitable for some specific situation and specific condition where normal concrete is not considered feasible or effective. Admixtures are basically…

Scientists from Singapore have developed Conflexpave a bendable concrete

September 30, 2016

Nanyang Technological University (NTU Singapore) scientists from the NTU-JTC Industrial Infrastructure Innovation Centre (I³C) have invented a new type of concrete called #ConFlexPave that is bendable yet stronger and longer lasting than regular concrete which is heavy, brittle and breaks under tension. This innovation allows the creation of slim precast pavement slabs for quick installation…

Ready Mix Concrete Definition Types Advantages

September 19, 2016

Ready mix concrete as the name suggest is the concrete that is already mixed in suitable proportions before arrival at site either on agitating trucks or dumpers as per the requirement of slump or material. Basically the ready-mix concrete is mixture of binding agent…

Glass Fiber Reinforced Concrete

September 1, 2016

Fiberglass is basically a matrix in which very fine fibers of glass exists. Fiberglass material is usually used for making of boats or for temporary sheds like sometimes on the roof tarus. That is the reason where ever the word fiber glass is touched ones always thinks of it…

Rebound Hammer Test, Schmidt hammer Test, Non-destructive Concrete Testing

August 24, 2016

This is one of the oldest non-destructive tests and it is still widely used. It was devised in 1948 by Ernst Schmidt, and is therefore known also as Schmidt hammer, or sclerometer, test. The hardness measured by the rebound hammer is quite different from the hardness determined in tests on metals which involve indentation. Rebound Hammer Test Principle of Rebound Hammer Test The rebound…

Sulphate attack in Concrete, Its Effects, Causes and Prevention

July 17, 2016

Solution of the sulfates of various bases including sodium, potassium, magnesium and calcium react with hydrated cement paste forming gypsum or a compound called ettringite (sulphoaluminate) which leads to the expansion and disruption of the concrete and mortar this process…

Concrete Vibration, Concrete Vibrators and its types

July 16, 2016

Quality of concrete depends on many factors among which the most vulnerable and defenseless is workmanship. During pouring the concrete and execution of work cautious supervision is imperative. The supervisor has to look for many things including the finishing of concrete…

Admixtures in Concrete, Definition Types and Benefits

July 13, 2016

Materials added to concrete during or before mixing are referred to as admixtures. They are used to improve the performance of concrete in certain situations as well as to lower its cost. There is a rather well-known saying regarding admixtures, to the effect that Different Types of Admixtures “they are to concrete as beauty aids are to the populace.” An admixture…

All about Lightweight Concrete

July 11, 2016

Structural lightweight aggregate concrete is an important and versatile material in modern construction. I has many and varied applications: multistory building frames and floors, curtain walls, shell roofs, folded plates, bridges, prestressed or precast elements of all…

QualityTests and Experiments on Concrete

July 11, 2016

Mostly concrete structures are failed due to poor workmanship which is a very tricky factor to control. Structures build with concrete has a life both from serviceability point of view and from structural point of view and this life depends solely on the quality of the…

Types of Concrete

July 9, 2016

Concrete is one of the widest used construction material whether it is a dam or a house or a bridge or flyover. Concrete is basically of three components water, aggregate and cement. Aggregate acts as a filling agent while cement mostly Portland cement act as a binding agent. Concrete is basically the most popular artificial material on earth. It has many advantages beside easy…

Top 10 Concrete Structures of the World

February 23, 2016

1 | Pantheon, Romepossibly by Apollodorus of Damascus, c126 AD The ancient Romans didn’t have reinforced concrete (that is, strengthened with steel) but they had concrete, and used it to such heart-stopping effect on the Pantheon that no one has really been able to…

Honeycombing in concrete, causes and remedies

February 23, 2016

The finishing in concrete works is vital as for sure the final touches depend on it. The poor finish of concrete is not only wrong from aesthetic point of view but also it shows the strength and integrity of the concrete structure. Besides many defects in concrete one…

10+ Important Points regarding mixing of Fresh Concrete

January 1, 2016

Mixing of concrete is a very important step as the final finish quality depends on it. Effective use of vibrator and screed depends only on how good or bad the mixing quality of the fresh concrete is. In this regard here are some important points and tips which every civil engineer must know in order to get a very excellent and outstanding concrete…