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sand or gravel has to be used as an aggregate in the process of mixing the materials which are used to make concrete are not durable recycling of concrete is quite difficult when concrete breaks down chemical reaction in manufacturing cement emits carbon-dioxide world-wide
concrete suffers from its widely application as well as the slow development of building industry concrete is not appreciated because of its dull color and other drawbacks, with little improvement as a building material slow progress of building industry does harm to the application and popularity of concrete concrete is ignored because it is conventional with little advance in its technology
the traditional building material concrete is the only man-made miracle. concrete is indispensable in the development of modern construction industry. compared with other inventions, concrete is more practical and useful. concrete, as a building material, can be mixed with any other materials.
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The new concrete will greatly reduce the cost of production and construction. Traditional concrete is stronger, lighter and climate-friendly compared with new concrete. Traditional concrete grants more freedom in design and construction compared with new concrete. The new concrete requires no reinforcement in preparation.
concrete suffers from its widely application as well as the slow development of building industry. concrete is not appreciated because of its dull color and other drawbacks, with little improvement as a building material. slow progress of building industry does harm to the application and popularity of concrete. concrete is ignored because it is conventional with little advance in its technology.
sand or gravel has to be used as an aggregate in the process of mixing. the materials which are used to make concrete are not durable. recycling of concrete is quite difficult when concrete breaks down. chemical reaction in manufacturing cement emits carbon-dioxide world-wide.
The new concrete will greatly reduce the cost of production and construction. Traditional concrete is stronger, lighter and climate-friendly compared with new concrete. Traditional concrete grants more freedom in design and construction compared with new concrete. The new concrete requires no reinforcement in preparation.
the traditional building material concrete is the only man-made miracle. concrete is indispensable in the development of modern construction industry. compared with other inventions, concrete is more practical and useful. concrete, as a building material, can be mixed with any other materials.
Van Oss has full confidence in the developers and the public in using new concrete. Van Oss is pessimistic about the future development of greener concrete. Van Oss is hostile to the attitudes of developers and the public. Van Oss feels that people should be patient to wait for the change of the public attitude.
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