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Dolosse forming a protective structure against a shoreline in Cape Town, South Africa. A dolos (plural: dolosse [1]: 10 ) is a wave-dissipating concrete block used in great numbers as a form of coastal management. It is a type of tetrapod.
Hydraform International Pty Ltd. is a manufacturer of brick and blockmaking machines. It was founded in Johannesburg, South Africa. [1] The company specialises in brick and blockmaking machines and accessories that enable the development of a stabilised soil cement block or a compressed earth block (CEB). Their products include stabilised soil ...
A pallet of "8-inch" concrete blocks An interior wall of painted concrete blocks Concrete masonry blocks A building constructed with concrete masonry blocks. A concrete block, also known as a cinder block in North American English, breeze block in British English, or concrete masonry unit (CMU), or by various other terms, is a standard-size rectangular block used in building construction.
South Africa: 222 × 106 × 73 8.7 × 4.2 × 2.9 ... Blocks have a much greater range of sizes. ... Although many houses are now built using a mixture of concrete ...
Palette stacked autoclaved aerated concrete blocks. Autoclaved aerated concrete (AAC) is a lightweight, precast, cellular concrete building material. Developed initially in the mid-1920s, it has expanded into widespread use. It is most suitable for producing concrete-like blocks [1] and as an eco-friendly alternative to such.
Ecology blocks are manufactured using concrete left over from other construction processes. A cross-section of an eco-block typically measures 2 feet (61 cm) square, with block lengths ranging from 3 feet (91 cm) to 6 feet (180 cm). One block weighs between 1,800 pounds (820 kg) and 4,000 pounds (1,800 kg). [1]
PPC Ltd, a supplier of cement, lime (material) and related products in southern Africa. It has 11 cement factories and a lime manufacturing facility in six African countries including South Africa, Botswana, Democratic Republic of the Congo, Ethiopia, Rwanda and Zimbabwe. The company is headquartered in Sandton (Johannesburg). [1]
A wave-dissipating concrete block is a naturally or manually interlocking concrete structure designed and employed to minimize the effects of wave action upon shores and shoreline structures, such as quays and jetties. One of the earliest designs is the Tetrapod, invented in 1950.