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.

Concrete 223

Concrete Foundation Materials Contract 223

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.

Concrete 240

Concrete Design Foundation Materials 240

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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Concrete Roads Materials Foundation 64

The Constructor

JANUARY 29, 2012

This leads to the presentation of an Information Technology IT tool for construction project safety management Total-Safety and, in particular, a module within Total-Safety designed to help construction personnel develop method statements with improved levels of hazard identification.

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Safety Construction Concrete Foundation 114

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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Concrete Materials Foundation Design 230

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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Concrete Construction Foundation Materials 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

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Concrete Design Foundation Materials 229

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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Concrete Transportation Foundation Design 240

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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Concrete Foundation Environment Materials 181

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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Concrete Foundation Materials Design 250

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.

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.

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Concrete Foundation Materials Comparison 133

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.

Concrete 235

Concrete Inspections Foundation Materials 235

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.

Concrete 141

Concrete Foundation Materials Contract 141

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.

Concrete 224

Concrete Foundation Materials Design 224

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.

Concrete 189

Concrete Foundation Materials Design 189

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.

Concrete 143

Concrete Foundation Materials Transportation 143

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 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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Concrete Foundation Materials Contract 130

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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Concrete Foundation Materials Design 171

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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Concrete Foundation Materials Design 212

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.

Concrete 161

Concrete Portland Foundation Materials 161

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.

Concrete 137

Concrete Foundation Materials Contract 137

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.

Concrete 127

Concrete Foundation Materials Contract 127

The Constructor

AUGUST 7, 2012

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

Concrete 223

Concrete Foundation Maine Materials 223

GCP Applied Technologies

FEBRUARY 27, 2018

Gatwick and Heathrow Airports protect high-traffic podium decks. When two of London’s largest international airports embarked on their own expansion projects, they both needed to find durable solutions for waterproofing podium decks. Both airports had high standards when it came to choosing a solution. michael.delros….

Airports 105

Airports Claims Concrete Risk 105

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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Concrete Foundation Materials Design 122

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.

Concrete 139

Concrete Foundation Materials Contract 139

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 133

Concrete Foundation Materials Design 133

The Constructor

NOVEMBER 11, 2011

Home News Videos Tips Building Building Bye Laws Building Materials Aggregates Cement Wood Building Tips Buildings Green Buildings Flooring Formwork/Shuttering Paints & Decoratives Skyscrappers Smart Materials Concrete Concrete Admixtures Concrete Cracks Crack Repair Concrete Durability Concrete Properties Concrete Types Fibre reinforced Fire Proof (..)

America 203

America Concrete Foundation Airports 203

Construction Specifier

APRIL 13, 2023

The construction industry faces a myriad of challenges, such as completing projects on schedule, ensuring the quality and safety of products and materials, overseeing the costs so they do not exceed the budget, and complying with corporate environmental and social responsibility standards; all while applying effective risk management at every step.

Materials 52

Materials Products Inspections Foundation 52

Construction Marketing

APRIL 3, 2015

The Miami Airport Convention Center (MACC), was an excellent venue for the expo, with great food! Other exhibitor highlights include the massive concrete truck from Florida Concrete Unlimited, and a pink cement truck from SuperMix (hh check this).

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America Construction Florida Miami 120

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 1, 2011

Sulphate attack in concrete foundation and cement mortar below ground level. Movement in walls above ground level and expansion and deterioration of cement mortar and concrete below ground level. Cracking in walls in line of weakness in structure. Clayey soil with high sulphate content. Inadequate support to foundation from land-fill.

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Foundation Concrete Construction Materials 240

The Constructor

MARCH 17, 2012

These ultimate values are divided by a partial factor of safety of between 2 and 3 to give the allowable values F eb and F sf. The maximum tensile service load, that can be resisted by pile is Values of the end bearing and skin friction resistance are obtained from soil exploration, pile driving energy and test loadings.

Concrete 230

Concrete Foundation Materials Engineering 230

The Constructor

JANUARY 14, 2012

Home News Videos Tips Building Building Bye Laws Building Materials Aggregates Cement Wood Building Tips Buildings Green Buildings Flooring Formwork/Shuttering Paints & Decoratives Skyscrappers Smart Materials Concrete Concrete Admixtures Concrete Cracks Crack Repair Concrete Durability Concrete Properties Concrete Types Fibre reinforced Fire Proof (..)

Concrete 203

Concrete Foundation Materials Contract 203

The Constructor

AUGUST 16, 2012

Adequate care should be taken by the contractor while laying and compacting the rubble soling to see that concrete surfaces in contact with soling are not damaged. Tweet Loading GET LATEST TOPICS IN YOUR EMAIL- SUBSCRIBE NOW.

Foundation 203

Foundation Concrete Materials Design 203