| 摘要 |
FIELD: construction. ^ SUBSTANCE: arrangement of mixed bases and surfaces by method of wedging includes preparation of road bed with removal of surface layer of earth, arrangement of additional and upper layers of base with usage of crushed stone fractions of various size, methods of moistening and compaction. At the same time surface layer of earth is removed to depth of at least 300-500 mm below frost zone, additional layer is arranged by scattering of clay of natural humidity onto road bed with a layer of 150-200 mm, distribution of unwedging crushed stone with fraction of 70-120 mm on clay with at least double repetition of materials scattering and with layer unwedging and compaction so that compacted mass does not have any cavities, and upper layers of base are arranged by layer scattering of crushed stone with fraction of 50...70 mm and thickness of 150-170 mm, fraction of 20-40 mm with thickness of 70-100 mm, and also crushed stone siftings mixed in mixer with clay ground into powder at the ratio of 100-200 kg of dry clay per 1000 kg of siftings with further turning of all layers of upper base by knives of device for mixing of base composition, arranged in the form of frame, where serial sections are mounted with a row of knives, and knives of one section relative to another are arranged in staggered order, with further spillage with water in amount of 30Ç40 l/m2 and subsequent compaction, wedging crushed stone elements to form cavity-free monolith. ^ EFFECT: reduction of road engineering costs, simplification of base arrangement technology, prevention of base damage by rain and melted waters. ^ 6 cl, 3 dwg |
