首页>
外国专利>
Composite pavement for highways, streets and airports with enriched limestone quarry waste as a coarse aggregate for the concrete of the subbase
Composite pavement for highways, streets and airports with enriched limestone quarry waste as a coarse aggregate for the concrete of the subbase
展开▼
机译：用于公路，街道和机场的复合人行道，其中富含石灰石采石场废料，用作路基混凝土的粗骨料
展开▼
页面导航
摘要
著录项
相似文献
摘要
Composite concrete pavement includes a surface course of normal concrete and a subbase or lower layer of concrete with coarse aggregate defined as enriched limestone waste of grading intermediate between coarse and fine aggregates. Coarse aggregate of this concrete is an enriched by-product of the manufacture of crushed limestone of regular sizes. As a raw material for enrichment, it should be finer than 9.5 mm. the amount of aggregate finer than 4.75 mm as a part of the total weight of aggregate should be not less than ½ before enrichment and close to, but not exceeding, ⅔ in the aggregate bin. Specified compressive strength and modulus of rupture of this concrete are up to 5,000 psi and 750 psi, respectively.
展开▼
