The Constructor

MARCH 21, 2012

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

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Concrete Foundation Contract Materials 235

The Constructor

NOVEMBER 8, 2011

Cracks in concrete beams due to increased shear stress 2. Cracks in concrete beams due to corrosion or insufficient concrete cover 3. Cracks parallel to main steel in case of corrosion in beams 4.

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Concrete Foundation Materials Contract 244

The Constructor

NOVEMBER 8, 2011

Upon wetting, concrete tends to expand. These moisture-induced volume changes are a characteristic of concrete. If the shrinkage of concrete could take place without any restraint, the concrete would not crack.

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Concrete Foundation Contract Materials 240

The Constructor

MARCH 20, 2012

When the formwork is erected the concrete can be poured. When the concrete has reached the required strength the formwork can be poured. If the steel had been placed too close to the surface and the concrete had been poured then over time the steel may become exposed to moisture and corrosion will commence.

Concrete 250

Concrete Foundation Materials Design 250

The Constructor

MARCH 25, 2012

Use of Precast Concrete in frames: There are two main types of precast building frame. Use of Precast Concrete for Floors: Each year the industry makes about 5 million square meters of precast floor slabs. Structural frames are mainly used for offices, car parks and retail developments.

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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. By careful selection of materials and finishing processes, a wide range of high quality finishes can be obtained.

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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. However, due to the variability of mix ingredients the nominal concrete for a given workability varies widely in strength.

Concrete 240

Concrete Design Foundation Materials 240

The Constructor

JANUARY 1, 2012

The benefits of using steel fibres in concrete are as follows: 1. It is generally not possible to achieve the same area of reinforcement to area of concrete using steel fibres as compared to using a network of reinforcing bars of wires.

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Concrete Foundation Materials Design 244

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. 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 22, 2011

It has many advantages when compared to the normal conventional concrete. The density is considerably reduced by using fly ash based cellular lightweight concrete than normal concrete and at the same time, the strength is not affected by appropriate design mix.

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. Cracks in reinforced concrete columns due to shrinkage of concrete 3. Cracks in reinforced concrete columns due to increased load on the slab 4.

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Concrete Foundation Materials Contract 235

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. In practice, reinforced concrete beams are designed on the assumption that cracks will occur under their service loads.

Concrete 200

Concrete Foundation Materials Comparison 200

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

AUGUST 10, 2012

These are the environments to which the concrete will be exposed during its working life. No Environment Exposure Conditions 1 Mild Concrete surfaces protected against weather or aggressive conditions, except those situated in coastal area. Table below shows exposure conditions of these environments.

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Concrete Foundation Environment Materials 230

The Constructor

MARCH 21, 2012

in dry conditions), it should be suitable for use in concrete. Aggregates: Quality of aggregates, its size, shape, texture, strength etc determines the strength of concrete. The presence of salts (chlorides and sulphates), silt and clay also reduces the strength of concrete.

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Concrete Materials Foundation Design 230

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. 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

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

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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. 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.

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Concrete Portland Foundation Materials 247

The Constructor

AUGUST 7, 2012

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. They may be load bearing, or they may be just decorative to act as a façade.

Concrete 203

Concrete Construction Foundation Materials 203

The Constructor

MARCH 19, 2012

Formwork pressures are function of height (including the height from which concrete is dropped into the forms) and are affected by concrete workability, rate of stiffening and rate of placing. Exceeding this limit may lead to unacceptable formwork deflections, loss of grout / concrete at joints, or even collapse.

Concrete 235

Concrete Inspections Foundation Materials 235

The Constructor

NOVEMBER 17, 2011

Advantages of Concrete Shells Like the arch, the curved shapes often used for concrete shells are naturally strong structures, allowing wide areas to be spanned without the use of internal supports, giving an open, unobstructed interior.

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Concrete Foundation Materials Design 230

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

Tweet Loading GET LATEST TOPICS IN YOUR EMAIL- SUBSCRIBE NOW.

Concrete 223

Concrete Foundation Maine Materials 223

The Constructor

MAY 16, 2021

Nowadays, long-span slabs are highly desirable as building owners demand spaces without columns. The selection of floor slabs such as flat plate,

Architecture 264

Architecture Concrete Structural Engineering Design 264

The Constructor

NOVEMBER 1, 2020

There is no specific rule to determine the desired distance between reinforced concrete columns. Factors like architectural considerations, function.

Concrete 264

Concrete Architecture 264

GCP Applied Technologies

MARCH 2, 2020

Concrete admixtures have been around for nearly a century. Since then, water reducers, superplasticizers, set accelerators, rheology control agents, air-entrainment, among other concrete admixtures, have become essential in the ready mix concrete , precast, tunneling and other concrete industries. Concrete mix design.

Concrete 133

Concrete Life Cycle America Materials 133

Construction Marketing

MARCH 19, 2025

City skylines are meant to be a reflection of progress, innovation, and architectural brilliance. Vehicle emissions, industrial pollutants, and airborne particles settle on surfaces, creating a layer of grime that dulls even the most striking architectural designs.

Visualization 165

Visualization Materials Green Architecture 165

GCP Applied Technologies

MARCH 2, 2020

Concrete admixture. Mid-range water reducers – These admixtures provide superior placeability and finishing for concrete flatwork, in commercial and high-end residential construciton. Air detraining agents – These liquid air-detraining admixtures reduce the level of plastic air in non air-entrained concrete. michael.delros….

Concrete 133

Concrete Portland Products Materials 133

GCP Applied Technologies

NOVEMBER 10, 2020

How to reduce bug holes in concrete. Discover best practices for improving the aesthetics of your concrete, including reducing bug holes. When working on a concrete structure where aesthetics are important, extra care needs to be taken to prevent bug holes. Concrete handing: Pour rate. Phillip.fry@gc…. November 10, 2020.

Concrete 148

Concrete Products Materials Architecture 148

The Constructor

MARCH 3, 2025

This innovative method combines advanced robotics, specialized concrete mixtures, and digital design to create customizable housing structures with minimal waste. As affordable housing shortages intensify globally, 3D printing is […]

Housing 130

Housing Products Concrete Innovation 130

Construction Specifier

FEBRUARY 2, 2024

SD Hollow concrete block masonry was first used as a building material around 1870, when wooden molds were developed to produce concrete block units from a relatively dry mixture of sand, cement, and water. In current construction, concrete masonry units (CMUs) are used as both structural and architectural building materials.

Concrete 116

Concrete Architecture Materials America 116

The Constructor

OCTOBER 29, 2022

Pavers are slabs, tiles, and blocks that can be made from various materials, such as rubber, brick (clay), concrete, flagstone, marble, travertine, porcelain, and even plastic. The post 8 Types of Paving Slabs appeared first on The Constructor.

Concrete 299

Concrete Materials Architecture 299

The Constructor

FEBRUARY 7, 2025

Floating cities represent an innovative architectural and engineering solution to address the challenges of rising sea levels and urban population growth. These revolutionary developments combine advanced marine engineering with sustainable urban planning to create resilient communities that adapt to changing water levels.

Architecture 130

Architecture Engineering Innovation Sustainability 130

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 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). (As

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Concrete Foundation Materials Design 230