A drag-reducing construction method for concrete pavement
A technology of concrete pavement, construction method, applied to cohesive pavement paved on site, roads, roads, etc., capable of solving problems such as no systematic solutions
Active Publication Date: 2020-10-30
GUANGXI UNIV
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Problems solved by technology
For machine-made sand cement concrete pavement, there is no systematic solution to overcome the construction resistance of triaxial paving and improve the performance of cement concrete pavement
Method used
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Embodiment Construction
[0099] Below in conjunction with embodiment the invention is described in further detail.
[0100] The overall drag reduction optimization idea of the present invention is: establish the connection between the construction capacity of the three-axis paving screed machine and the construction performance of the concrete mixture, and select the three-axis paving screed machine on this basis to optimize the performance of the concrete mixture. Construction performance, according to the construction performance of the mixture, optimize the three-axis paving and leveling construction technology, and finally reduce the construction resistance of the machine-made sand cement concrete pavement, improve the construction efficiency and improve the homogeneity, flatness, wear resistance and resistance of the pavement. slippery effect.
[0101] 1. Type selection of three-axis paving screed machine and control requirements of three-axis paving concrete construction performance
[0102] ...
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The invention provides a resistance-reduction construction method of a concrete pavement. In order to realize the aim of improving the construction efficiency of a triaxial paving leveling machine, arelation between construction resistance and concrete yield shear stress, and a relation between a road surface mortar lifting thickness and a concrete viscosity coefficient are established, so that adesign of the triaxial paving leveling machine, a composition design of a triaxial paving concrete mixture and a triaxial paving leveling construction technology are optimized. By adopting the methodprovided by the invention, the optimized yield and viscosity coefficient of the concrete mixture are remarkably reduced and the construction resistance is reduced by 10 to 50 percent; compared with aloose paving coefficient of a common triaxial paving mixture of 1.15 to 1.25, the loose paving coefficient is remarkably reduced, the number of times of vibration can be reduced and the compactness of concrete is improved; the surface mortar lifting thickness and the mortar quality are controlled; the resistance-reduction construction method has the effects of remarkably improving the construction efficiency and improving the homogeneity, flatness, wear resistance and slip resistance of a road surface.
Description
technical field [0001] The invention belongs to the technical field of concrete pavement construction, and in particular relates to a drag reduction construction method for concrete pavement. Background technique [0002] The application of machine-made sand in cement concrete pavement has become an inevitable trend. Among them, the three-axis paving and leveling construction technology of cement concrete pavement has become the standard process for mountain highway bridge deck pavement, tunnel pavement and cement concrete pavement of various grades of roads. , this technology has mature experience in natural sand concrete pavement, and has achieved good technical and economic results. However, for machine-made sand concrete, due to the angularity of machine-made sand and the influence of stone powder content, the plastic strength of concrete is significantly increased, thereby increasing the resistance of concrete construction. During the three-axis paving and leveling pro...
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IPC IPC(8): E01C7/14E01C19/48
CPCE01C7/14E01C7/142E01C19/48
Inventor 梁军林白伟万成黎水昌容洪流
Owner GUANGXI UNIV