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. Unfortunately, aggregate provides internal restraint that reduces the magnitude of this volume change to about 0.05%.

Concrete 240

Concrete Foundation Contract Materials 240

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 235

Concrete Foundation Materials Contract 235

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.

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. These offer simplicity and under normal circumstances, have a margin of strength above that specified.

Concrete 240

Concrete Design Foundation Materials 240

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 210

Concrete Foundation Materials Design 210

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.

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

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

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 244

Concrete Foundation Materials Design 244

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

MARCH 22, 2012

Water within the hardened cement paste is forced to more as a result of the applied load. This movement of moisture is the primary cause of creep deformation. Some movement also occurs due to the propagation of microcracks. The movement due to creep can be greater than the elastic strain on loading.

Concrete 203

Concrete Foundation Materials Contract 203

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.

Concrete 230

Concrete Materials Foundation Design 230

The Constructor

MARCH 25, 2012

WHAT IS PRECAST CONCRETE? 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

MARCH 19, 2012

Depending on how big or complicated the pour is, the inspection may just take few minutes or it could take hours.

Concrete 235

Concrete Inspections Foundation Materials 235

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 207

Concrete Foundation Materials Contract 207

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.

Concrete 230

Concrete Foundation Materials Design 230

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

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 7, 2012

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

Concrete 223

Concrete Foundation Maine Materials 223

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

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 202

Concrete Foundation Materials Contract 202

The Constructor

NOVEMBER 9, 2022

Roller-compacted concrete (RCC) is a type of concrete that can support a roller during its unhardened state while it is being compacted. The roller-compacted concrete should be as fresh […]. The roller-compacted concrete should be as fresh […].

Concrete 264

Concrete Construction Plans Roads 264

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

MAY 15, 2021

Fly ash is an important ingredient used for the production of cement-based materials like concrete, mortar, etc. One primary application of fly ash.

Concrete 255

Concrete Materials Products Construction 255

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

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 190

Concrete Foundation Materials Design 190

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 178

Concrete Foundation Materials Contract 178

Civil Lead

AUGUST 17, 2020

Concrete Road Vs Asphalt Road The terms “Bitumen” and “Asphalt” are regularly used correspondingly to mean both natural and manufactured. Read more Concrete Road Vs Asphalt Road – Which is Better?

Roads 95

Roads Concrete Transportation Engineering 95

Construction Marketing

MAY 7, 2021

Building and construction, whether it’s for structures or roads, requires multiple types of heavy equipment. Some examples are road and building construction, mining, and demolitions. Also, bulldozers are good for transporting vast quantities of material. 5) Concrete Mixer. 3) Backhoe.

Equipment 269

Equipment Construction Concrete Materials 269

The Constructor

NOVEMBER 16, 2011

There should be good transport facilities such as railway, bus service, for going to office, college, market, etc. The site should be in fully developed area or in the area which has potential of development. The site should command a good view of landscape such a hill, river, lake, etc.

Residential 240

Residential Site Plans Concrete 240

The Constructor

FEBRUARY 11, 2020

Continuously reinforced concrete pavement is a jointless concrete pavement continuously reinforced throughout the pavement length in the longitudinal.

Concrete 182

Concrete Construction Roads Transportation 182

The Constructor

MAY 29, 2012

For instance, the concrete sub and superstructure should not need replacing during 120 year design life. The items that will need maintenance and or replacement include: Bearings Waterproofing membranes Road surfacing Movement joints Parapets The road surfacing will have to be replaced over long stretches of the carriageway.

Inspections 203

Inspections Concrete Foundation Roads 203

The Constructor

NOVEMBER 16, 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 (..)

Construction 213

Construction Concrete Foundation Transportation 213

The Constructor

NOVEMBER 15, 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 (..)

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

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 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