第07章 路桥工程施工技术(Chapter 07 construction technology of Luqiao).docVIP

第07章 路桥工程施工技术(Chapter 07 construction technology of Luqiao).doc

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第07章 路桥工程施工技术(Chapter 07 construction technology of Luqiao) The construction process of graded gravel construction by road mixing method is as follows 2. central station central plant mixing construction (two) binder stabilized base (PAD) 1. layer of cement stabilized base (PAD) layer (1) of cement stabilized soil construction preparation before 1) raw material preparation: 2) mixture design (2) the construction of cement stabilized soil 1) prepared through layer 2) 3) 4) the construction lofting preparation of paving aggregate mixing 5) 6) 7) 8) integer rolling joints and U-turn 9) 10) health center station centralized factory mix construction 2. lime stabilized soil cushion (1) preparation before construction) 1. Raw material preparation, soil, lime, water 2) mixture composition design (2) the construction of lime stabilized soil (3) the main quality problems and treatment measures of lime soil compaction water content control 1) usually is less than the optimum water content of 1% ~ 2% for 2) to strictly control the standard of proof of the practice of compaction, compaction hours the shrinkage is more serious than the degree of compaction when 3) the most unfavorable season is the temperature in the temperature shrinkage 0 ~ 10 C 4) dry shrinkage is the most unfavorable situation in the early stage of lime soil forming. 5) the end of lime soil construction after the early pavement layer, the lime soil base without big changes in water content, in order to reduce the shrinkage crack 6) mixed with aggregate in lime soil (such as gravel. Macadam), aggregate content of the mixed material can best meet the requirements of composition, generally about 70%. 7) or set the asphalt macadam layer thickness is more than 15cm in Building lime spread (or asphalt penetration) coupling layer, can reduce or prevent reflective cracks 3. lime industry waste base cushion (1) construction preparation 1) raw material 2) design of mixture composition (2) construction of lime industria

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