Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, and is the most widely used building material. Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined.
Reinforced concrete, also called ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel bars (rebar) and is usually embedded passively in the concrete before the concrete sets. However, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials. In corrosion engineering terms, when designed correctly, the alkalinity of the concrete protects the steel rebar from corrosion.
An earth shelter, also called an earth house, earth bermed house, or underground house, is a structure with earth (soil) against the walls, on the roof, or that is entirely buried underground.
The Burj Al Arab is a luxury hotel in Dubai, United Arab Emirates. Developed and managed by Jumeirah, it is one of the tallest hotels in the world, although 39% of its total height is made up of non-occupiable space. Burj Al Arab stands on an artificial island that is 280 m (920 ft) from Jumeirah Beach and is connected to the mainland by a private curving bridge. The shape of the structure is designed to resemble the sail of a ship. It has a helipad near the roof, at a height of 210 m (689 ft) above ground.
The Burj Khalifa is a skyscraper in Dubai, United Arab Emirates. It is the world's tallest structure. With a total height of 829.8 m and a roof height of 828 m (2,717 ft), the Burj Khalifa has been the tallest structure and building in the world since its topping out in 2009, surpassing Taipei 101, the previous holder of that status.
Prestressed concrete is a form of concrete used in construction. It is substantially "prestressed" (compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service.
Glued laminated timber, commonly referred to as glulam, is a type of structural engineered wood product constituted by layers of dimensional lumber bonded together with durable, moisture-resistant structural adhesives so that all of the grain runs parallel to the longitudinal axis. In North America, the material providing the laminations is termed laminating stock or lamstock.
Salginatobel Bridge is a reinforced concrete arch bridge designed by Swiss civil engineer Robert Maillart. It was constructed across an alpine ravine in the grisonian Prättigau, belonging to the municipality of Schiers, in Switzerland between 1929 and 1930. In 1991, it was declared an International Historic Civil Engineering Landmark, the thirteenth such structure and the first concrete bridge so designated.
Bangabandhu Bridge, also known as the Jamuna Multi-purpose Bridge is a bridge opened in Bangladesh in June 1998. It connects Bhuapur on the Jamuna River's east bank to Sirajganj on its west bank. It was the 11th longest bridge in the world when constructed in 1998 and at present is the 6th longest bridge in South Asia. The Jamuna River, which it spans, is one of the three major rivers of Bangladesh, and is fifth largest in the world in discharge volume.
Structural steel is a category of steel used for making construction materials in a variety of shapes. Many structural steel shapes take the form of an elongated beam having a profile of a specific cross section. Structural steel shapes, sizes, chemical composition, mechanical properties such as strengths, storage practices, etc., are regulated by standards in most industrialized countries.
The Burj Al Alam was a proposed 108-story, 510 m (1,670 ft) hyperboloid skyscraper in the Business Bay area of Dubai, United Arab Emirates, though the project's roots are in a 101-storey design called "Fortune 101" and slated for the Dubai Marina area. It was designed to resemble a crystal flower. If constructed, it would have become one of the world's tallest buildings. The tower was one of the projects of the Fortune Group, which has a number of other projects in Dubai such as the Fortune Bay and Fortune Tower.
Concrete cover, in reinforced concrete, is the least distance between the surface of embedded reinforcement and the outer surface of the concrete. The concrete cover depth can be measured with a cover meter. The purpose of concrete cover is to protect the reinforcement from corrosion, fire, and other potential damage.
Atkins is a Canadian-British multinational engineering, design, planning, architectural design, project management and consulting services company. It is a subsidiary of SNC-Lavalin and is headquartered in London.
Hydrophobic concrete is concrete that repels water. It meets the standards outlined in the definition of waterproof concrete. Developed in Australia in the mid-20th century, millions of cubic yards of hydrophobic concrete have been laid in Australia, Asia, and Europe, and in the United States since 1999. Its effective use in hundreds of structures has contributed to its large acceptance and growing use.
Jeddah Tower or Burj Jeddah, previously known as Kingdom Tower, is a skyscraper construction project in Jeddah, Saudi Arabia. It is planned to be the first 1 km (3,281 ft) tall building and would be the world's tallest building or structure upon completion, standing 180 m (591 ft) taller than the Burj Khalifa. Located in the north side of Jeddah, it is the centrepiece of the Jeddah Economic City project. After almost five years of inactivity, development work on the project resumed in 2023.
The Landmark is a postmodern supertall skyscraper in Abu Dhabi, United Arab Emirates. The mixed-use project stands 324 metres (1,063 ft) tall with 72 floors above ground and five basement levels. Construction on the skyscraper started in late 2006 and the building was completed in 2013. It is the second tallest building in Abu Dhabi behind the Burj Mohammed bin Rashid in the Central Market Project World Trade Center complex.
Hyundai Mipo Dockyard is one of the largest shipbuilding companies with world share rank 1 (50%) in PC. Since the 1980s, more than 10,000 ships were repaired and converted until 2005 and 400 newly ordered ships were delivered until 2009. It delivers about 70 new ships in a year. The delivered amount is over 1 million compensated gross tonnage (CGT) in a year (2007), making it 4th in the world. Its product mix is shipbuilding (96.4%) and conversion and repair (3.6%). It is a member of Hyundai Heavy Industries Group and was listed on KOSPI in 1983.
Concrete degradation may have many different causes. Concrete is mostly damaged by the corrosion of reinforcement bars due to the carbonatation of hardened cement paste or chloride attack under wet conditions. Chemical damages are caused by the formation of expansive products produced by various chemical reactions, by aggressive chemical species present in groundwater and seawater, or by microorganisms. Other damaging processes can also involve calcium leaching by water infiltration and different physical phenomena initiating cracks formation and propagation. All these detrimental processes and damaging agents adversely affects the concrete mechanical strength and its durability.
Al-Akbar National Mosque of Surabaya, also known as Al-Akbar Mosque or Great Mosque of Surabaya, is a national mosque located in Surabaya, East Java. It is the second largest mosque in Indonesia after Istiqlal Mosque in Jakarta in terms of maximum capacity. The location of the mosque is beside the Surabaya-Gempol Highway. Its most distinctive feature is its large vertical dome, accompanied by four small blue domes. It also has a minaret with height of 99 meters, an ode to the 99 Names of Allah.
The architecture of the United Arab Emirates has undergone dramatic transformation in recent decades, from operating as a collection of fishing villages to a global business hub known for its innovation and dynamism. Between the 1960s and 1970s, architecture in the United Arab Emirates (UAE) remained solely traditional, with narrow alleys and windtower houses still in use, reflective of a strong Bedouin heritage. Architecture is influenced by elements of Islamic, Arabian and Persian culture.
