The Constructor

NOVEMBER 8, 2011

Upon wetting, concrete tends to expand. This type of shrinkage is caused by the loss of moisture from the cement paste constituent, which can shrink by as much as 1% per unit length. Unfortunately, aggregate provides internal restraint that reduces the magnitude of this volume change to about 0.05%.

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The Constructor

NOVEMBER 15, 2011

Nominal Mixes In the past the specifications for concrete prescribed the proportions of cement, fine and coarse aggregates. Nominal Mixes In the past the specifications for concrete prescribed the proportions of cement, fine and coarse aggregates.

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The Constructor

NOVEMBER 8, 2011

Cracks in reinforced concrete columns due to Steel Corrosion (cracks parallel to steel bars) 2. Cracks in reinforced concrete columns due to shrinkage of concrete 3. Cracks in reinforced concrete columns due to increased load on the slab 4. Cracks in reinforced concrete columns due to sulphate attack 5.

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The Constructor

MARCH 21, 2012

in dry conditions), it should be suitable for use in concrete. Quality of Raw Materials: Cement: Provided the cement conforms with the appropriate standard and it has been stored correctly (i.e.

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The Constructor

NOVEMBER 20, 2011

The concrete shall be deemed to comply with the strength requirements if: a) every sample has a test strength not less than the characteristic value;or b) The strength of one or more samples though less than the characteristic value, is in each case not less than the greater of : 1) The characteristic strength minus 1.35

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The Constructor

NOVEMBER 28, 2011

This method is used where large quantity of concrete work is involved at greater height, where other means of transporting is not easy to do. Concrete pumps have been known for more than 50 years.

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The Constructor

AUGUST 10, 2012

These are the environments to which the concrete will be exposed during its working life. These are: Mild exposure Moderate exposure Severe exposure Very severe exposure, and Extreme exposure. The durability requirement, like clear cover to reinforcement steel is governed by these exposure conditions.

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The Constructor

NOVEMBER 25, 2011

WHY WE TEST CONCRETE SRTRENGTH AFTER 28 DAYS? WHY WE TEST CONCRETE SRTRENGTH AFTER 28 DAYS? Tweet Why do we test concrete compressive strength after 28 days? The table below shows the compressive strength gained by concrete after 1, 3, 7, 14 and 28 days with respect to the grade of concrete we use.

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CivilJungle

DECEMBER 28, 2020

Reinforced Concrete Frame. The reinforced concrete frame is a superstructure combined with horizontal components , i.e. c olumns and vertical components, i.e. beams. Sometimes this concrete frame is also called as a skeleton of this entire structure. Concrete frames are mainly two types, those are-. Cast in situ.

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The Constructor

MARCH 20, 2012

From the diagram above, we can see how the process unfolds. When the binding has set, the steel bars are placed into position.

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The Constructor

MARCH 23, 2012

There are two ways of overcoming this problem: Embed another material in the concrete which is strong in tension – reinforced concrete Remove the tension altogether – by arching or prestressing.

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The Constructor

MARCH 19, 2012

Depending on how big or complicated the pour is, the inspection may just take few minutes or it could take hours. Only when the formwork has been approved, may the pour take place.

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The Constructor

MARCH 25, 2012

There is no grout loss, such as that from badly fitting formwork, which results in poor quality concrete like shown below. By careful selection of materials and finishing processes, a wide range of high quality finishes can be obtained.

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The Constructor

MARCH 22, 2012

Following are the cases, which affect creep in concrete: When the aggregate volume is increased, creep will be less as the aggregate is more rigid than the cement paste. Creep can continue over a long period of time (more than 30 years in some cases) after the application of the load.

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The Constructor

NOVEMBER 21, 2011

Both the rate and degree of hydration, and the resulting strength of the final concrete, depend on the curing process that follows placing and consolidating the plastic concrete. This reaction, called hydration, produces a stone-like substance—the hardened cement paste.

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The Constructor

NOVEMBER 22, 2011

It has many advantages when compared to the normal conventional concrete. Fly ash is considered as one of the waste industrial product that cannot be easily disposed. It solves the problem of disposal of flyash and at the same time it reduces the cost of the construction.

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The Constructor

MARCH 25, 2012

The following figures illustrate the precast concrete process: 1. The individual components are prefabricated off site then taken to site where they are erected.

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The Constructor

MARCH 20, 2012

Cleanliness: when repairing concrete, care must be taken to remove any dirt or dust that will prevent the repair concrete bonding with the parent concrete. Correct technique : The correct technique and the correct tools are essential for repairing damaged concrete.

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The Constructor

MARCH 25, 2012

WHAT IS PRECAST CONCRETE? Tweet Precast concrete is cast under factory controlled conditions and not erected on site until it is fully hardened. Tweet Precast concrete is cast under factory controlled conditions and not erected on site until it is fully hardened.

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CivilJungle

JANUARY 16, 2021

There may be a problem of swelling and shrinkage of bamboo in the concrete. Bamboo may absorb water during the casting and curing of the concrete. Also, Read: What Is Slab Construction | Types of Slab Design | What Is Floor Slab | Types of Floor Slab | Concrete Slabs Thickness | Prefabricated Concrete Slabs. Bamboo Roof.

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The Constructor

AUGUST 18, 2012

Related posts: SELF COMPACTING CONCRETE WITH TESTS TESTS ON HARDENED CONCRETE CHEMICAL TESTS ON CONCRETE STRUCTURES COMMON TESTS ON THE FRESH CONCRETE Removing concrete slab to build wood deck but worried about water entering basement? Tweet Loading GET LATEST TOPICS IN YOUR EMAIL- SUBSCRIBE NOW.

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The Constructor

NOVEMBER 17, 2011

The shells are most commonly flat plates and domes , but may also take the form of ellipsoids or cylindrical sections, or some combination thereof.

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The Constructor

DECEMBER 17, 2011

It is new technique involved in the civil engineering.Reactive powder concrete in made by replacing the conventional sand and aggregate by grounded quartz less than300 micron size, silica fume, synthesized precipitated silica ,steel fibers about 1 cm in length and 180 micron in diameter.

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The Constructor

NOVEMBER 28, 2011

Procedure for measuring bulk density of concrete is as per IS 1199 – methods of sampling and analysis of concrete. The steps are as follows: i)Take freshly mixed concrete from transit mixer by using wheel borrow. ii) Fill the cylindrical measure with concrete as soon as practicable after mixing.

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The Constructor

JANUARY 22, 2012

The stress strain curve of concrete lies between those of the aggregate and the cement paste. The aggregate is more rigid than the cement paste and will therefore deform less (i.e. have a lower strain) under the same applied stress. However this relationship is non-linear over the most of the range.

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CivilJungle

FEBRUARY 5, 2022

In this article, we will discuss all about the concrete masonry units. The CMU wall is constructed with the help of standard sizes concrete masonry units. A concrete masonry unit (CMU)is a versatile and environment-friendly building unit that is available in a variety of shapes and sizes in the market. Concrete Bricks.

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The Constructor

NOVEMBER 21, 2011

The concrete can be specified in two ways : a) by proportioning of the constituents /ingredients (nominal mix) b) by required strength (Design mix) Concrete is mixed by any two methods, based on requirement as per quality and quantity of concrete required.

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The Constructor

AUGUST 7, 2012

Tweet Loading GET LATEST TOPICS IN YOUR EMAIL- SUBSCRIBE NOW.

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CivilJungle

JANUARY 7, 2021

Shotcrete/mortar/spray-concrete is a kind of refined concrete drizzled by gas hose-pipe nozzle at high pressure & velocity on a projectile motion on a prepared wall surface. For slope protection with wire mesh and in some confined areas wherever prosaic concreting canno t be done. Shotcrete & Concrete.

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Construction Cost Estimating

JULY 25, 2019

White cement concrete has similarity with grey Portland cement but the main difference lies in fineness and color. There are wide array of color options in this type of cement for developing architectural and structural concrete. White cement concrete is called as snow Crete. CHARACTERISTICS OF WHITE CEMENT CONCRETE: 1.

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The Constructor

AUGUST 24, 2012

Related posts: WHAT IS PRECAST CONCRETE? Tweet Loading GET LATEST TOPICS IN YOUR EMAIL- SUBSCRIBE NOW.

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CivilJungle

DECEMBER 26, 2021

Self-Healing Concrete. Kinetic Roads. Self-Healing Concrete. In the construction of Self-healing Concrete cement is the most widely used material, but cement is also contributors one of the biggest to harmful carbon emissions, by using cement we increasing annual global emissions up to 7 percent. Kinetic Roads.

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CivilJungle

APRIL 17, 2020

The Inverted beam is a reinforced concrete beam , different types shape of beam-like I beam, T Beam, L beam, etc. Inverted beams are popular and form an essential part of modern reinforced concrete framed structures. Lastly, strict and rigid architectural considerations led to the provision of inverted beams. Suggested Read –.

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CivilJungle

AUGUST 2, 2022

Concrete Driveways. Concrete is desirable to be a famous kind of driveway for many purposes. Concrete also provides various adjustable looks and can be stained to turn the paint, tiles, or cost. Concrete also provides various adjustable looks and can be stained to turn the paint, tiles, or cost. Types of Driveways.

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CivilJungle

OCTOBER 10, 2022

What Is Road Pavement | Types of Road Pavements | Flexible Pavement | Rigid Pavement. All About Bituminous Pavement | What Is Bituminous Pavement What IS Bituminous Paving What Is Bituminous Road. Standard concrete slabs are generally lower in cost per square foot than the alternative. Is Paving Cheaper Than Concrete?

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Natural Building

OCTOBER 30, 2022

For her thesis project at the School of Architecture she created “Cinders” using three varieties of the local soil. The shelter, not accessible by road, is roughly pyramidal in form with an open top and a window cut into one of the sides. “The transience of the building itself is a conceptual focal point of the work.”

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Architecture Arizona Roads Foundation 52

Construction Test

MAY 5, 2020

Prague’s main station is often overlooked thanks to surrounding roads and carparks and its contemporary entrance, which takes you to an underground concourse. Milan’s main train station (Italy’s second largest) is vast and has the monumental architecture and heroic statuary to match. PRAHA HLAVNI, PRAGUE.

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