Investigation of influence of additives on properties of multi-molecular organic solutions used for permeation grouting

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI:10.3846/mbmst.2019.112

Rimantas Mackevičius, D. Sližytė, T. Zhilkina, V. Turchin

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引用次数: 1

Abstract

Permeation grouting for stabilization of dispersive sandy and gravely soils is in use from beginning of 19th century and has high importance for various underpinning, tunneling, and structural strengthening works. As materials for permeation grouting are applied not only cement mortar or silica gel in many compositions but multi-molecular organic solutions too. From multi-molecular organic solutions for permeation grouting are in use various synthetic resins such as acrylic, urea-formaldehyde, or other polymer resins. Urea-formaldehyde resin has right physical and mechanical properties for applying in soil stabilization but additives can change these properties. For example, additives can increase density, pH-rate, and gel-formation time of urea-formaldehyde resin. Additives can decrease viscosity of solutions based on urea-formaldehyde resin. Additives can improve environmental aspects of use of multi-molecular organic solutions for grouting of sandy soils. Long-time investigations of influence of additives on properties of multi-molecular organic solutions used for soil stabilization give good results for optimization of composition of materials for grouting.

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添加剂对渗透灌浆用多分子有机溶液性能影响的研究

渗透注浆加固分散性砂质和重质土的方法自19世纪初开始应用，在各种支护、隧道开挖和结构加固工程中具有重要意义。渗透灌浆的材料不仅有水泥砂浆、硅胶等多种成分，还有多分子有机溶液。用于渗透灌浆的多分子有机溶液均采用各种合成树脂，如丙烯酸树脂、脲醛树脂或其他高分子树脂。脲醛树脂具有良好的物理力学性能，适合用于土壤稳定，但添加剂会改变这些性能。例如，添加剂可以增加密度、ph值和脲醛树脂的凝胶形成时间。添加剂可以降低脲醛树脂基溶液的粘度。添加剂可以改善多分子有机溶液在砂土注浆中的环境影响。长期研究添加剂对土壤稳定用多分子有机溶液性能的影响，为注浆材料组成的优化提供了良好的结果。

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The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019)

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