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Showing posts with label Concrete. Show all posts
Showing posts with label Concrete. Show all posts

January 21, 2014

Design Flexibility Through The Use Of Concrete In Construction

Without concrete the landscape of Britain would be unrecognizable. Concrete is one of the most important resources in construction today, it is the most widely used construction material in the world because of the unparalleled versatility that allows it to be used in the building of just about anything. With concrete we are able to construct awe inspiring sky scrapers, ground breaking bridges, magnificent dams, humble pavements and everything in between, but what is it that makes ever-sturdy concrete so flexible in the world of construction?

Durability And Longevity

Concrete buildings have the ability to withstand the ravages of nature and time. Concrete is a remarkable substance that is completely flexible when freshly mixed (from cement, water and aggregates), and once it hardens it becomes an incredibly strong and durable material. It is its initial malleability that causes it to be the perfect substance for the building of such an expansive array of structures.

The strength of concrete, which increases over time, is what gives it the fantastic ability to withstand future changes and adaptions to structures. Concrete upper floors are able to support walls, meaning the walls below are saved from being load bearing, so the layout of a building can evolve with changing spatial requirements, creating buildings are both flexible and last for a lifetime. The longevity of concrete cannot be overstated; concrete structures such as the Coliseum in Rome have been standing for thousands of years and are in no danger of disappearing.

Sustainable Construction

Concrete is the most abundantly used material in construction, in the developed world it is estimated that around 60% of the built environment is concrete based, and as we move further towards a greener future every day it has never been more important. Concrete has the ability to be used in the construction of more energy efficient buildings because of its unbeatable thermal mass; this means that less energy is wasted in an attempt to produce heat from unsustainable sources.

The entire construction industry is placing greater focus on the three pillars of sustainability, environmental/economic/social, and the manufacture and use of concrete in building is playing a vital part. The innovators of the industry are developing manufacturing and design strategies that utilize concrete’s thermal prowess, placing a greater emphases on recycling and using industry bi-products in manufacture, and creating buildings that can be easily altered if their needs change to negate the need for them to be demolished.

FOB AT BARAPULLA: COMMONWEALTH GAMES-2010, NEW DELHI
Utter Abundance

The European population spends an estimated 90% of their time within buildings, and these buildings each have their own specific purposes which require an abundance of concrete products. There are countless concrete products including cast in-situ, tilt-up, precast and masonry blocks as well as solid, cavity and composite walls that can aid in the construction of any kind of structure.

Obviously it’s imperative to choose the right concrete for your specific construction job. The abundance of concrete, as well as the constant innovation within the industry, means the importance of concrete will only gain momentum in years to come.
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January 16, 2014

Concrete Construction Seems To Be Equipped With Innovation

Global demand for cement, the binder in concrete, is forecast to reach 4.7 billion tonnes in 2017, with sales expected to expand by more than +5% a year over the next four years, according to research company Freedonia.

While this represents a slight decline in pace from the 2007 to 2012 period, altogether, Freedonia's figures constitute a fairly robust outlook for this key construction material.

At the same time there is a drive among the concrete construction sector's equipment manufacturers to produce more versatile and efficient equipment, fuelled by the ever-present need for contractors to improve productivity.

New technology is playing a big role in the latest developments. Telematics systems that allow machines to be monitored remotely are spreading to every corner of the construction industry, for instance, often aiming to help to improve efficiency and performance of equipment.

Putzmeister has been focussing on computer-controlled interaction between man and machine for its truck-mounted concrete pumps. It has developed a new radio remote control for its 38-5 truck-mounted concrete pumps, the Ergonic 2.0.

Designed to conserve energy and reduce emissions, the device monitors the interaction between outriggers, boom movements and pump functions. The control unit is larger yet lighter than its predecessor, with a high-resolution colour screen, and boasts new safety features such as guaranteeing the boom can only be moved in a permitted working envelope.

Specific machine settings are transferred via a chip card and the radio remote control can be used for other Putzmeister truck-mounted concrete pumps simply by exchanging the chip.

Manufacturers in the falsework and formwork sector have also been working to develop equipment and techniques to improve efficiency and flexibility for contractors. Doka, for instance, has a range of modular formwork that can be tailored to the complex demands of the energy sector, where fast construction progress is important.
Doka offers specific systems for building tanks, silos and cooling towers as well as specific systems for dam construction. Its SK175 cooling-tower formwork, for example, is a fully mechanised, self-climbing system for pouring 1.5 m high sections that is said to produce precise forming within short cycling times.
Peri also tailored its working platforms to the needs of the energy sector with a contract to support construction of the 1,600 MW coal-fired Eemshaven power plant in Groningen, the Netherlands. Its Peri Up Rosett Flex modular scaffolding system provided safe access for welding and insulation work on the plant's two 35 m high, 64 m long filters for flue gas desulphurisation. Assembly of the modular scaffolding for the 35 m high working platform was carried out using a guardrail in advance, making rope protection unnecessary. In addition, the Peri scaffolding worked around the existing steel structure as well as those walkways already mounted.
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