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Concrete Construction: Uses.—Among the uses of crushed stone are: (1) as aggregates for highways and for concrete construction; (2) in bituminous mixtures; (3) as railroad ballast; (4) in concrete products; (5) as rip-rap; (6) in the case of limestone, for flux and for Portland cement and lime manufacture; (7) as mine dust; (8) as agricultural limestone; and many others. From 50 to 65 per cent of the total tonnage is concrete aggregate and road metal. Limestone, granite, trap rock, sandstone, and other rocks are competitive with each other as inert aggregates, provided they meet physical test requirements.
Microelectronics makes it possible to mass-produce on a minuscule chip of semiconductor material (usually silicon) the very complicated circuits that formerly required hundreds or thousands of separate elements—transistors, diodes, resistors, and capacitors. In many ways, microelectronics can be compared to the use of poured concrete in the construction of large buildings. Prior to the invention of concrete, such buildings were constructed with individual bricks fastened together with mortar.
Espousing radical economy and uncompromising construction standards, it proposes environmental sensitivity as a foundation for the design process.
Completed in 1942, Golconde was the first reinforced, cast-in-place concrete building in India and clearly celebrates the modernist credo: architecture as the manifest union of aesthetics, technology, and social reform.
This exhibition assembles construction drawings, architects' letters and journals, and extensive photographs of this extraordinary building. |
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