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Research into new fiber-reinforced concretes continues today. Fibers are usually used in concrete to control cracking due to plastic shrinkage and to drying shrinkage. They also reduce the permeability of concrete and thus reduce bleeding of water. Some types of fibers produce greater impact, abrasion, and shatter resistance in concrete. [7]
Reinforcing schemes are generally designed to resist tensile stresses in particular regions of the concrete that might cause unacceptable cracking and/or structural failure. Modern reinforced concrete can contain varied reinforcing materials made of steel, polymers or alternate composite material in conjunction with rebar or not. Reinforced ...
Textile-reinforced concrete can be used to create full structures, like bridges and buildings, as well as large structures in environments with much water, such as in mines and boat piers. [13] As of 2018, the testing procedures and approval for these structures is not available, although it can currently be used to create small components ...
Reinforcing bars in masonry construction have been used since antiquity, with Rome using iron or wooden rods in arch construction. [5] Iron tie rods and anchor plates were later employed across Medieval Europe, as a device to reinforce arches, vaults, and cupolas. [6] [7] 2,500 meters of rebar was used in the 14th-century Château de Vincennes. [8]
Julius Berger is a Nigerian construction company, headquartered in Abuja, [1] with additional permanent locations in Lagos and Uyo.. Julius Berger Nigeria Plc is a Nigerian company offering holistic services covering the planning, design, engineering, construction, operation and maintenance of buildings, infrastructure and industry projects in Nigeria.
Nigeria National Petroleum: Oil and gas 9,706 1,877 2 Nigeria Liquefied Natural Gas: Oil and gas 6,315 ... 3 MTN Nigeria: Telecommunications 3,514 536 4 Dangote Cement: Cement 2,699 721 5 Nigerian Petroleum Development: Oil and gas 2,686 219 6 Flour Mills of Nigeria: Agroindustry 2,014 67 7 Airtel Nigeria: Telecommunications 1,503 343 8 ...
The News Agency of Nigeria (NAN) is a news reporting agency owned and run by the Federal Government of Nigeria just like Nigerian Television Authority. [1] NAN was formed in part to disseminate news easily across the country and to the international community and also as a means to counter negative stories about Nigeria. [2]
Ripples Nigeria is a Nigerian online newspaper based in Lagos. It was launched in 2015. It was launched in 2015. It is an independent, pro-investigation multi-media online news platform focused primarily on politics, policy and economy.