Construction Specifier

OCTOBER 10, 2022

Proper concrete curing methods are critical for achieving the overall strength, durability, performance, and aesthetics of concrete. It is directly related to reducing maintenance costs, extending service life, and enhancing the sustainable attributes of concrete. Craft, DBA, CSI, CDT, CCCA, ASTM, ACI, LtCol USMCR (ret.).

Concrete 52

Concrete CSI Documentation Materials 52

Construction Equipment

JULY 21, 2020

Designer Omer Arbel’s Vancouver studio has made a film documenting the concrete forms of House 75.0, which is being built on a hay farm near Surrey in British Columbia, Canada. The video shows the partially complete home that is being used as a testbed to continue Arbel’s experiments into the…

Concrete 79

Concrete Documentation Housing Design 79

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.

Concrete 235

Concrete Foundation Maine Materials 235

BD+C

DECEMBER 16, 2020

The American Concrete Institute has released the new ACI 301-20, Specifications for Concrete Construction , along with the companion ACI Field Reference Manual. ACI 301 is a reference specification that engineers, architects, and specifiers can apply to projects involving concrete construction.

Concrete 52

Concrete Construction Documentation Engineering 52

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.

Concrete 212

Concrete Foundation Contract Materials 212

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.

Concrete 244

Concrete Foundation Materials Contract 244

BD+C

AUGUST 15, 2019

The American Concrete Institute has released ACI 318-19 Building Code Requirements for Structural Concrete. The document includes: — Major technical changes in higher reinforcing steel yield strengths. — The addition of shotcrete and deep foundation provisions. Seismic requirements for deep foundations and other applications.

Concrete 83

Concrete Foundation Documentation Design 83

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

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.

Concrete 238

Concrete Foundation Contract Materials 238

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.

Concrete 230

Concrete Materials Foundation Design 230

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.

Concrete 244

Concrete Foundation Materials Design 244

The Constructor

AUGUST 7, 2012

Advantages that make precast concrete cladding such an appealing option are: Durability: Assuming the panel design has been carried out with proper thought for rainwater flow over the surface of the building, it will weather well and not require frequent cleaning.

Concrete 200

Concrete Construction Foundation Materials 200

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.

Concrete 233

Concrete Foundation Materials Contract 233

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

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.

Concrete 200

Concrete Foundation Environment Materials 200

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 145

Concrete Foundation Materials Comparison 145

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

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.

Concrete 157

Concrete Foundation Materials Contract 157

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.

Concrete 187

Concrete Foundation Materials Design 187

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 238

Concrete Foundation Materials Design 238

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

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 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.

Concrete 154

Concrete Foundation Materials Design 154

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.

Concrete 225

Concrete Foundation Materials Design 225

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.

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. Just like in-situ concrete, precast concrete can be plain, reinforced or prestressed concrete. No related posts.

Concrete 140

Concrete Foundation Materials Contract 140

CivilJungle

APRIL 22, 2022

What to Do If the Concrete Cube Fails After 28 Days? So, What To Do If Concrete Cube Falls after 24 days? There are many record and recovery choices if the concrete cell falls in the Test. There are many record and recovery choices if the concrete cell falls in the Test. Cube Test of Concrete.

Concrete 52

Concrete Modeling Overhead Documentation 52

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 148

Concrete Foundation Materials Contract 148

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 179

Concrete Portland Foundation Materials 179

BD+C

OCTOBER 30, 2014

The American Concrete Institute (ACI) has released the completely reorganized ACI 318-14: Building Code Requirements for Structural Concrete. The 2015 International Building Code will reference this document. The reorganized document is organized from an engineer’s perspective, ACI says.

Concrete 76

Concrete Documentation Organization Construction 76

The Constructor

NOVEMBER 28, 2011

Procedure for measuring bulk density of concrete is as per IS 1199 – methods of sampling and analysis of concrete. Procedure for measuring bulk density of concrete is as per IS 1199 – methods of sampling and analysis of concrete. ii) Fill the cylindrical measure with concrete as soon as practicable after mixing.

Concrete 145

Concrete Foundation Materials Design 145

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. The aggregate is more rigid than the cement paste and will therefore deform less (i.e.

Concrete 151

Concrete Foundation Materials Contract 151

Construction Dive

JULY 13, 2018

Department of Justice and the Commonwealth of Virginia allege that Universal Concrete Products Corp. knew Silver Line concrete panels were defective but falsified documents to make it appear they met specifications. Both the U.S.

Concrete 55

Concrete DC Metro Virginia 55

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 128

Concrete Foundation Materials Design 128

Construction Cost Estimating

JANUARY 30, 2019

This civil engineering article sheds light on the required steps for post-concrete inspection as soon as decluttering of any concrete structure is completed. There should be a proper labeling system for the project that sustains traceability among the concrete test report and the Concrete Pour Card.

Inspections 40

Inspections Concrete Documentation Sustainability 40

Construction Specifier

JANUARY 13, 2023

Recent efforts in North America to reduce embodied carbon in concrete are similar to British solutions to eradicate cobras in colonial India. Concrete is similarly suffering from too simple solutions in solving the complex problem of reducing embodied carbon. They have not updated their approach to documentation nor installation.

Compensation 98

Compensation Concrete Portland CSI 98