The Constructor

MARCH 25, 2012

Use of Precast Concrete in frames: There are two main types of precast building frame. The structural frame consists of slabs, beams and columns. Structural frames are mainly used for offices, car parks and retail developments. The cross-wall frame consists of floor slabs and solid walls.

Concrete 235

Concrete Foundation Maine Materials 235

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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Concrete Foundation Contract Materials 240

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. Steel fibres are relatively short and closely spaced as compared with countinuous reinforcing bars of wires.

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Concrete Foundation Materials Design 244

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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Concrete Foundation Materials Design 229

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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Concrete Foundation Materials Contract 235

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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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 pumps have been known for more than 50 years.

Concrete 240

Concrete Transportation Foundation Design 240

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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Concrete Foundation Materials Design 244

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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Concrete Foundation Environment Materials 230

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 200

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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Concrete Foundation Materials Design 210

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

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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Concrete Foundation Materials Contract 203

The Constructor

MAY 23, 2014

How To Guide Non-Destructive Tests Structual Inspection Structural Engineering Structural Evaluation Loads on Structures Structural Analysis Structural Design' Physical load test is required to determine the serviceability of the structure. Load arrangements, load intensity, loading criteria, instrumentation.

Structural Engineering 230

Structural Engineering Inspections Concrete Engineering 230

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 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. 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 198

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 214

Concrete Portland Foundation Materials 214

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.

Concrete 207

Concrete Foundation Materials Contract 207

The Constructor

AUGUST 7, 2012

In this case, the panels are designed and detailed by the engineer. Non-Load bearing cladding panel: A non-load bearing cladding panel must be designed, together with its fittings, to withstand the appropriate wind forces. The precast manufacturer checks the handling aspects and if necessary will modify the reinforcement accordingly.

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Concrete Foundation Maine Materials 223

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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Concrete Foundation Materials Design 200

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.

Concrete 203

Concrete Construction Foundation Materials 203

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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Concrete Foundation Materials Contract 202

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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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

Heat expansion of the cladding panel must be allowed for in the design. But considerations must also be given to loads that may be exerted on the cladding due to either its own or the supporting structure’s expansion during fire. Thus: Firstly the fixings must be flexible enough to allow for two dimensional movement.

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Concrete Foundation Materials Contract 178

Construction Specifier

APRIL 9, 2025

These winning ways have now extended beyond the court as the teams new $64-million training facilitythe Seattle Storm Center for Basketball Performancewas named a winner in the National Ready Mixed Concrete Associations (NRMCA) 2024 Concrete Innovation Awards. The design called for lighter, whiter concrete for the structure.

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Defense Concrete Foundation Seattle 59

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 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.

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Concrete Foundation Structural Engineering Materials 240

The Constructor

NOVEMBER 19, 2011

Even experience in extensive design in academic context can provide only limited perspective in engineering decision making. Most lessons in engineering decision making come from the cases of histories of failures of structures, which itself are the results of a bad judgement, thus making us understand the pitfalls in conceptual design.

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Concrete Foundation Engineering Design 230

The Constructor

JANUARY 17, 2012

The decision is made by the design team.

Construction 230

Construction Concrete Foundation Design 230

The Constructor

MARCH 27, 2012

Precast floor slabs: The main types of slabs are used in the precast frames are: Hollow cored slab Double tee slab Precast walls: Precast concrete walls serve two functions: Stability As walls or boxes surrounding staircases and lift shafts. Corner columns – not symmetrical at all.

Concrete 240

Concrete Foundation Materials Design 240

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.

Foundation 240

Foundation Concrete Construction Materials 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.

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Concrete Foundation Materials Design 223

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 230

Concrete Foundation Materials Design 230

The Constructor

NOVEMBER 16, 2011

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Residential 240

Residential Site Plans Concrete 240

The Constructor

SEPTEMBER 10, 2012

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Project Management Management Concrete Foundation 244