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 7, 2012

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Concrete 190

Concrete Construction Foundation Materials 190

The Constructor

AUGUST 7, 2012

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Concrete 223

Concrete Foundation Maine Materials 223

The Constructor

MARCH 21, 2012

The size of movement depends upon the change in temperature and the coefficient of thermal expansion o f concrete.

Concrete 194

Concrete Foundation Contract Materials 194

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

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 133

Concrete Foundation Materials Comparison 133

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

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 229

Concrete Foundation Contract Materials 229

The Constructor

MARCH 25, 2012

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Concrete 171

Concrete Foundation Materials Design 171

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 224

Concrete Foundation Materials Design 224

The Constructor

MARCH 25, 2012

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

Concrete 233

Concrete Foundation Maine Materials 233

The Constructor

NOVEMBER 21, 2011

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Concrete 189

Concrete Foundation Materials Design 189

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 17, 2011

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Concrete 212

Concrete Foundation Materials Design 212

The Constructor

AUGUST 18, 2012

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Concrete 139

Concrete Foundation Materials Contract 139

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 130

Concrete Foundation Materials Contract 130

The Constructor

MARCH 20, 2012

From the diagram above, we can see how the process unfolds.

Concrete 250

Concrete Foundation Materials Design 250

The Constructor

MARCH 19, 2012

It is easily cut to shape on site, and if handled and stored carefully, it can be used many times.

Materials 136

Materials Concrete Fabrication Foundation 136

The Constructor

AUGUST 10, 2012

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

Concrete 181

Concrete Foundation Environment Materials 181

The Constructor

NOVEMBER 28, 2011

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Concrete 133

Concrete Foundation Materials Design 133

The Constructor

AUGUST 24, 2012

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Concrete 127

Concrete Foundation Materials Contract 127

The Constructor

DECEMBER 17, 2011

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Concrete 161

Concrete Portland Foundation Materials 161

The Constructor

MARCH 22, 2012

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

Concrete 141

Concrete Foundation Materials Contract 141

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 137

Concrete Foundation Materials Contract 137

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 122

Concrete Foundation Materials Design 122

The Constructor

MARCH 25, 2012

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

Concrete 143

Concrete Foundation Materials Transportation 143

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

NOVEMBER 11, 2011

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America 203

America Concrete Foundation Airports 203

The Constructor

MARCH 26, 2012

The different materials are used according to their strengths and weaknesses to provide simple, buildable and competitive high-quality structures that offer consistent performance.

Concrete 214

Concrete Construction Foundation Materials 214

The Constructor

NOVEMBER 15, 2011

When the mortar is green, the face joints should be raked to a depth of 12 to 19mm in order to have a proper key for plastering or pointing. Generally the height of brick masonry construction in a day should be less than 1.5m. The maximum difference in rise of the wall between the different portions should not be more than one meter.

Construction 247

Construction Concrete Foundation Materials 247

The Constructor

JANUARY 14, 2012

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Concrete 203

Concrete Foundation Materials Contract 203

The Constructor

JANUARY 14, 2012

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Concrete 203

Concrete Foundation Materials Contract 203

The Constructor

MARCH 27, 2012

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Concrete 240

Concrete Foundation Materials Design 240

The Constructor

APRIL 2, 2012

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Concrete 223

Concrete Foundation Materials Design 223

The Constructor

SEPTEMBER 10, 2012

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Project Management 242

Project Management Management Concrete Foundation 242

The Constructor

MARCH 27, 2012

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Concrete 230

Concrete Construction Foundation Materials 230

The Constructor

NOVEMBER 27, 2011

This method is also used to find out 28 days compressive strength of concrete in 28 hours. (As As per IS 9013-1978-Method of making, curing and determining compressive strength of accelerated cured concrete test specimens).

Concrete 218

Concrete Foundation Materials Design 218