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Design and Engineering Application of Polymer Grouting Pore Layout Scheme for Expressway Pavement Diseases
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In grouting technology, after choosing the type of grouting fluid needed for grouting, the next most important step is the layout of grouting holes, that is, grouting hole type and hole spacing. Reasonable arrangement of grouting holes and hole spacing can not only achieve the desired reinforcement effect, but also save unnecessary economic expenses. For this reason, the effective diffusion radius of slurry is firstly determined considering both the characteristics of polymer slurry and the pore structure of injected medium. Based on this, the distance between holes (triangular and rectangular) is determined. Finally, the grouting design parameters of this design scheme are applied to the disease area of Nanping Expressway in Shenzhen. The deflection value before and after grouting is detected by falling weight deflectometer (FWD). The results show that the grouting design parameters can achieve better grouting effect.
Title: Design and Engineering Application of Polymer Grouting Pore Layout Scheme for Expressway Pavement Diseases
Description:
In grouting technology, after choosing the type of grouting fluid needed for grouting, the next most important step is the layout of grouting holes, that is, grouting hole type and hole spacing.
Reasonable arrangement of grouting holes and hole spacing can not only achieve the desired reinforcement effect, but also save unnecessary economic expenses.
For this reason, the effective diffusion radius of slurry is firstly determined considering both the characteristics of polymer slurry and the pore structure of injected medium.
Based on this, the distance between holes (triangular and rectangular) is determined.
Finally, the grouting design parameters of this design scheme are applied to the disease area of Nanping Expressway in Shenzhen.
The deflection value before and after grouting is detected by falling weight deflectometer (FWD).
The results show that the grouting design parameters can achieve better grouting effect.
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