GCM Engineering

08/07/2020

Site investigation or Sub-Soil explorations are done for obtaining the information about subsurface conditions at the site proposed for construction. Soil exploration consists of determining the profile of the natural soil deposits at the site, taking the soil samples and determining the engineering

09/03/2016

02/12/2014

http://construction.gcmengineering.com/?p=295

A sample of freshly mixed concrete is placed and compacted y rodding in a mold shaped as the frustum of a cone. The mold is raised and the concrete allowed to subside. The vertical distance between the original and displaced position of the center of the top surface of the concrete is measured and…

27/11/2014

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http://construction.gcmengineering.com/?p=291

Michelle Pelletier’s (a University of Rhode Island master’s degree candidate) new self-healing concrete. Currently, concrete is the most widely used building material, yet as the structures age, concrete cracks – and what begins as a slight crack can turn into a massive problem. Pelletier’s solution…

20/11/2014

http://construction.gcmengineering.com/?p=281

Shoring is the process of supporting a building, vessel, structure, or trench with shores (props) when in danger of collapse or during repairs or alterations. Shoring comes from shore a timber or metal prop. Shoring may be vertical, angled, or horizontal. Type of shoring Buildings Raking Shores cons…

13/11/2014

http://construction.gcmengineering.com/?p=245

Non-Destructive Tests are useful for testing and evaluation of concrete strength after construction and during its lifetime. NDT tests are conducted to ensure the quality of concrete construction as per required specification for intended use. Various Non Destructive Testing Equipments for concrete…

08/11/2014

http://construction.gcmengineering.com/?p=192

Stamped concrete is an architectural concrete which has a superior surface finish. After a concrete floor has been laid, floor hardeners (can be pigmented) are impregnated on the surface and a mold which may be textured to replicate a stone / brick or even wood is stamped on to give an attractive te…

08/11/2014

http://construction.gcmengineering.com/?p=200

The defects in concrete in Japan were found to be mainly due to high water-cement ratio to increase workability. Poor compaction occurred mostly because of the need for speedy construction in the 1960s and 1970s. Hajime Okamura envisioned the need for concrete which is highly workable and does not r…

08/11/2014

http://construction.gcmengineering.com/?p=208

Pervious concrete, used in permeable paving, contains a network of holes or voids, to allow air or water to move through the concrete. This allows water to drain naturally through it, and can both remove the normal surface-water drainage infrastructure, and allow replenishment of groundwater when co…

08/11/2014

http://construction.gcmengineering.com/?p=204

Shotcrete (also known by the trade name Gunite) uses compressed air to shoot concrete onto (or into) a frame or structure. The greatest advantage of the process is that shotcrete can be applied overhead or on vertical surfaces without forming. It is often used for concrete repairs or placement on br…

08/11/2014

http://construction.gcmengineering.com/?p=212

Ferrocement, also referred to as ferro concrete or reinforced concrete, a mixture of Portland cement and sand applied over layers of woven or expanded steel mesh and closely spaced small-diameter steel rods rebar. It can be used to form relatively thin, compound-curved sheets of concrete ideal for s…

08/11/2014

http://construction.gcmengineering.com/?p=167

Formwork comes in several types: Traditional timber formwork. The formwork is built on site out of timber and plywood or moisture-resistant particleboard. It is easy to produce but time-consuming for larger structures, and the plywood facing has a relatively short lifespan. It is still used extensiv…

30/10/2014

Concrete Recycling System

02/09/2014

Must Watch

03/08/2014

27/05/2014

LandSlinding Baltimore April 2014
Watch till the end.....

04/02/2014

Paving Machine

21/08/2013

The Best 3d street Art !!

21/08/2013

Concrete-eating robot recycles buildings:
watch the Video

21/08/2013

Concrete-eating robot recycles buildings:
A product designer in Sweden has developed robots called "ERO" which will eat concrete walls and structures, working together as a fleet in demolishing concrete buildings.

The robots are green in that they:

scan the area and determine the route to take
use hydro-demolition or high-pressure water to dismantle concrete by cracking and breaking it down and stripping it from the reinforcing structure
suck and separate the aggregate, cement and water
send the aggregate and filtered cement slurry separately to the packaging unit
pack the clean aggregate into bags that are labeled and sent to local concrete precasting stations for reuse in new prefabricated concrete buildings
recycle the water back into the system
take down buildings in an energy-efficient way because turbulence dynamos in the air suction produce some of the power the EROs need
switched from traditional "brutal pulverizing to smart deconstruction"
do not cause heavy vibrations destructive to other sections of the building or neighboring structures
do not destroy the supporting rebar structure
are remarkably clean compared to dusty demolition techniques
easily move around on multi-directional tracks
are completely autonomous
make sure that nothing goes to landfills or gets sent for more processing. The rebar is cleaned of concrete, dust and rust and ready for immediate reuse. All of the load-bearing structure is reusable.

Currently when concrete buildings are demolished:

operators manually control different sized heavy machinery
lots of energy is consumed in smashing the concrete
the structure is ground into dusty pieces
large amounts of water are sprayed continually with fire hoses to hold down the harmful dust
large machines are used to scoop up the concrete rubble and rebar
the rubbish is transferred to recycling stations outside cities
the waste is separated manually
power crushers break up the concrete in many states
metal rebar is melted for reuse
the crushed concrete can only be used simple construction layouts.

The ERO robot is still in the conceptual phase and has some heavy work before it shows up on job sites. Designer Omer Haciomeroglu received his Bachelor Degree in Industrial Design at the Istanbul Technical University and his Master's Degree in Advanced Product Design at the Umea Institute of Design in Umea in northern Sweden. Omer's ERO was a gold winner in the 2013 IDSA IDEA Student Design category. He says that "Once ERO starts working, it literally erases the building." He developed the robot with Atlas Copco

14/06/2013

آلة لنقل الأشجار دون تدميرها

28/05/2013

Castle House Island in Dublin, Ireland

16/05/2013

Timeline Photos

07/05/2013

NATIONAL CENTER FOR THE PERFORMING ARTS (THE EGG,CHINA)

07/05/2013

CHINA CENTRAL TELEVISION HEADQUARTERS BUILDING.

05/05/2013

The Bridge Academy, Hackney, London, principal designer: Building Design Partnership.
Situated in an extremely tight site, this new multi-storey academy shows how design can produce a high-quality learning environment on even the most challenging site

30/04/2013

CUTE apartments

29/04/2013

Wierd basket building, in the DOMINICAN REPUBLIC.