The Constructor

MARCH 25, 2012

Use of Precast Concrete in frames: There are two main types of precast building frame.

Concrete 235

Concrete Foundation Maine Materials 235

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.

Concrete 244

Concrete Foundation Materials Design 244

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.

Concrete 235

Concrete Foundation Materials Contract 235

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.

Concrete 240

Concrete Foundation Contract Materials 240

The Constructor

MARCH 25, 2012

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Concrete 229

Concrete Foundation Materials Design 229

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.

Concrete 240

Concrete Design Foundation Materials 240

The Constructor

AUGUST 10, 2012

These are: Mild exposure Moderate exposure Severe exposure Very severe exposure, and Extreme exposure.

Concrete 230

Concrete Foundation Environment Materials 230

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.

Concrete 250

Concrete Foundation Materials Design 250

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 240

Concrete Transportation Foundation Design 240

The Constructor

NOVEMBER 15, 2011

2) The axial lines (center lines) of the trenches are marked with the help of profiles, sighting rails, strings and pegs. (3) 3) The off-sets are measured from axial lines and the frontage lines are placed in their correct position relative to local requirements. (4)

Foundation 190

Foundation Concrete Materials Design 190

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

Concrete 230

Concrete Design Foundation Materials 230

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.

Concrete 244

Concrete Foundation Materials Design 244

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.

Concrete 200

Concrete Foundation Materials Comparison 200

The Constructor

MARCH 25, 2012

The individual components are prefabricated off site then taken to site where they are erected.

Concrete 210

Concrete Foundation Materials Design 210

The Constructor

MARCH 22, 2012

Water within the hardened cement paste is forced to more as a result of the applied load.

Concrete 203

Concrete Foundation Materials Contract 203

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.

Concrete 247

Concrete Portland Foundation Materials 247

The Constructor

MARCH 21, 2012

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Concrete 230

Concrete Materials Foundation Design 230

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. Just like in-situ concrete, precast concrete can be plain, reinforced or prestressed concrete.

Concrete 198

Concrete Foundation Materials Contract 198

The Constructor

AUGUST 18, 2012

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Concrete 207

Concrete Foundation Materials Contract 207

The Constructor

NOVEMBER 17, 2011

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Concrete 230

Concrete Foundation Materials Design 230

The Constructor

AUGUST 7, 2012

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Concrete 203

Concrete Construction Foundation Materials 203

The Constructor

AUGUST 7, 2012

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Concrete 223

Concrete Foundation Maine Materials 223

The Constructor

DECEMBER 17, 2011

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Concrete 214

Concrete Portland Foundation Materials 214

The Constructor

NOVEMBER 28, 2011

Procedure for measuring bulk density of concrete is as per IS 1199 – methods of sampling and analysis of concrete.

Concrete 200

Concrete Foundation Materials Design 200

The Constructor

JANUARY 22, 2012

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.

Concrete 202

Concrete Foundation Materials Contract 202

The Constructor

NOVEMBER 21, 2011

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Concrete 190

Concrete Foundation Materials Design 190

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.

Concrete 188

Concrete Foundation Materials Design 188

The Constructor

AUGUST 24, 2012

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Concrete 178

Concrete Foundation Materials Contract 178

The Constructor

MARCH 17, 2012

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Concrete 230

Concrete Foundation Materials Engineering 230

The Constructor

NOVEMBER 15, 2011

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Construction 247

Construction Concrete Foundation Materials 247

The Constructor

MARCH 23, 2012

Codes of practice impose limits on horizontal movement or sway.

Concrete 240

Concrete Foundation Structural Engineering Materials 240

The Constructor

NOVEMBER 16, 2011

Good foundation soil should be available at responsible depth. Nearness of schools, hospitals, market, etc. are considered good for residential site but these facilities do not carry any significance in the selection site for other public buildings. This aspect saves quite a bit in the cost of the building.

Residential 240

Residential Site Plans Concrete 240

The Constructor

MARCH 17, 2012

We will discuss here the load carrying capacity of both single pile and group of piles.

Concrete 230

Concrete Foundation Materials Engineering 230

The Constructor

MARCH 19, 2012

When concrete is fresh and in its liquid state it must be restrained within a mould in order for it to set in its required shape. A smooth outer surface provides the main support for the concrete as it sets. Formwork is the term used to describe this mould. For most in-situ pours, the formwork is made of wood.

Concrete 223

Concrete Foundation Materials Design 223

The Constructor

MARCH 27, 2012

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Concrete 240

Concrete Foundation Materials Design 240

The Constructor

NOVEMBER 27, 2011

hardened concrete). hardened concrete). hardened concrete). hardened concrete). hardened concrete). hardened concrete). Procedure as per IS 516 – Methods of tests for strength of concrete 1.

Concrete 223

Concrete Foundation Materials Design 223

The Constructor

NOVEMBER 19, 2011

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Concrete 230

Concrete Foundation Engineering Design 230