{"title":"Mechanical behavior of grouted sands with acrylates and polyurethane resins","authors":"G. Spagnoli, S. Collico, Götz Tintelnot","doi":"10.1680/jgrim.23.00005","DOIUrl":null,"url":null,"abstract":"Chemical grouting is a technique where solution-based binders are used to improve both mechanical and hydraulic properties of the soils or rocks. The following research shows an extensive laboratory program where a polyurethane and an acrylate were grouted in a tertiary sand under different water contents, relative density, with different gelling time and different grouting conditions. Unconfined compressive strength (UCS), splitting tests, triaxial tests and creep tests on the grouted materials were performed. A statistical interpretation considering the Kernel probability density function was performed in order to understand the interdependency of the changing parameters. In general polyurethane-consolidated samples provide higher mechanical properties with respect to acrylates, however the effects and the dependency to the geotechnical base parameters are different.","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Institution of Civil Engineers-Ground Improvement","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1680/jgrim.23.00005","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
引用次数: 1
Abstract
Chemical grouting is a technique where solution-based binders are used to improve both mechanical and hydraulic properties of the soils or rocks. The following research shows an extensive laboratory program where a polyurethane and an acrylate were grouted in a tertiary sand under different water contents, relative density, with different gelling time and different grouting conditions. Unconfined compressive strength (UCS), splitting tests, triaxial tests and creep tests on the grouted materials were performed. A statistical interpretation considering the Kernel probability density function was performed in order to understand the interdependency of the changing parameters. In general polyurethane-consolidated samples provide higher mechanical properties with respect to acrylates, however the effects and the dependency to the geotechnical base parameters are different.
期刊介绍:
Ground Improvement provides a fast-track vehicle for the dissemination of news in technological developments, feasibility studies and innovative engineering applications for all aspects of ground improvement, ground reinforcement and grouting. The journal publishes high-quality, practical papers relevant to engineers, specialist contractors and academics involved in the development, design, construction, monitoring and quality control aspects of ground improvement. It covers a wide range of civil and environmental engineering applications, including analytical advances, performance evaluations, pilot and model studies, instrumented case-histories and innovative applications of existing technology.