The Constructor

JANUARY 1, 2012

The benefits of using steel fibres in concrete are as follows: 1. Steel Fibres are generally distributed throughout a given cross section whereas reinforcing bars or wires are placed only where required 2.

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Fieldwire

MARCH 5, 2024

Estimating project costs correctly and managing the budget accordingly are just as vital. All subcontractors make project cost estimation and budgeting errors. Follow these eight essential steps to estimate project costs and budget funds effectively to prevent grave miscalculations. Digital data lends itself to analytics.

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The Constructor

NOVEMBER 8, 2011

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

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.

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The Constructor

AUGUST 7, 2012

They may be load bearing, or they may be just decorative to act as a façade. The techniques that are used in the manufacture of panels permit a variety of finishes that imitate virtually any type of architecture at a fraction of the cost.

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CivilJungle

APRIL 14, 2023

How Many Concrete Bags Equal A Yard? If you’re looking to fill your yard with concrete , then you’re probably wondering how many bags of concrete are needed to fill up that space. If you plan on doing a concrete project , you might wonder how many concrete bags you’ll need to buy. 12 divided by 27 = 0.44

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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. These mixes of fixed cement-aggregate ratio which ensures adequate strength are termed nominal mixes. These offer simplicity and under normal circumstances, have a margin of strength above that specified.

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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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CivilJungle

SEPTEMBER 2, 2022

All About of Concrete Batching. Generally, concrete is a multipurpose , eco-friendly construction material that is widely used in most construction all over the world. Concrete is also an inexpensive material. Concrete is generally made of water, aggregate (fine or coarse), and cement (powder form). Volumetric Batching.

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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

MARCH 22, 2012

Water within the hardened cement paste is forced to more as a result of the applied load. This movement of moisture is the primary cause of creep deformation. Some movement also occurs due to the propagation of microcracks. The movement due to creep can be greater than the elastic strain on loading.

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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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GCP Applied Technologies

MAY 4, 2020

How to Reduce the Cost of Concrete Production. Two of the toughest challenges we hear for ready-mix producers are the lack of automation available and the cost and hassle of returned concrete. The problem: Rejected concrete loads are costly. Another occurrence is a project simply has leftover ready-mix concrete. .

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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

NOVEMBER 25, 2011

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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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

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

WHAT IS PRECAST CONCRETE? WHAT IS PRECAST CONCRETE? Tweet Precast concrete is cast under factory controlled conditions and not erected on site until it is fully hardened. Just like in-situ concrete, precast concrete can be plain, reinforced or prestressed concrete.

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CivilJungle

APRIL 26, 2020

What Is Concrete? Concrete is the final product resulting from mixing cement , aggregates (including sand), water, and mixtures. The first use of concrete was by the Roman Empire. The Pantheon is the largest unreinforced concrete dome in the world, built-in 120 A.D. Different Types of Concrete. Dry lean Concrete.

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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.

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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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Civil Lead

APRIL 2, 2020

What is Prestressed Concrete? Concrete can withstand a great amount of compressive stress but it has a very low tensile strength. Because of low tensile strength, concrete gets cracks when subjected to maximum load. Why prestressed concrete is used? When water comes in contact with these cracks the steel gets corroded.

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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

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.

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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. Expediency: The longer the repair is left, the more work has to be done, and the less likely that the repair will blend in.

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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

MARCH 19, 2012

Depending on how big or complicated the pour is, the inspection may just take few minutes or it could take hours.

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The Constructor

AUGUST 24, 2012

Cladding panels behave like wall panels and are therefore subjected to the same forces, i.e. axial compression, horizontal flexure due to wind, and in-plane and out-of-plane shear.

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The Constructor

AUGUST 7, 2012

This allows a greater performance from the cladding panel than simple building enclosure.

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CivilJungle

AUGUST 20, 2020

What Is Workability of Concrete ? The diverse requirements of transportability, compatibility, mobility, stability, mixability, placeability, and finish ability of fresh concrete mentioned above are collectively referred. The workability of fresh concrete is thus a composite property. Ease Workability of Concrete.

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The Constructor

AUGUST 18, 2012

The initial setting time should not be less than 1 hour and to be within 25% of the result with distilled water.

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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.

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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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Construction Cost Estimating

MARCH 3, 2020

The most common type of them, a precast concrete pile is a deep foundation used to transfer loads from a upper, soft layer of soil to a hardar, capable lower layer. Extra reinforcements are provided in the concrete so as to provide support for the forces received before the instalent. At most they can go up to 40 feet deep.

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Construction Cost Estimating

MARCH 7, 2019

The concrete quality depends on the manufacturing process of concrete. The manufacturing process involves the following steps :- Batching or measurement of materials, Mixing, Transportation, Placing, Compacting, Curing. Batching of Material: To maintain the standard of concrete, the quantities of the materials should be perfect.

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CivilJungle

APRIL 22, 2022

What to Do If the Concrete Cube Fails After 28 Days? So, What To Do If Concrete Cube Falls after 24 days? There are many record and recovery choices if the concrete cell falls in the Test. There are many record and recovery choices if the concrete cell falls in the Test. Cube Test of Concrete.

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Concrete Modeling Overhead Documentation 52

CivilJungle

MAY 20, 2021

Cracking moment represented as ( M cr ) is well -defined as the moment , that is once surpassed reasons the cracking of concrete. Intended for the design of the deflection in the concrete at cracking moment, the moment is considered at the point, the failure will happen in concrete. Cracking of Concrete. Ig = bh 3 /12.

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