SBIR Phase I: Subgrade Repair and Stabilization

这个小型企业创新研究(SBIR)第一阶段项目将探索一种新的路基稳定工艺，将容易获得的材料注入玻璃化区，消除土壤在玻璃化过程中致密时的下沉问题。不良到边缘地基和斜坡材料的现场土壤稳定问题在整个运输系统中都是地方性的。公路填土以及桥梁和涵洞等附属结构周围的局部路基破坏，构成了每条公路和道路系统的主要维护问题。第一阶段将通过开发一种从土壤中生产路基合成岩石的强大而通用的技术来确定工艺的可行性。玻璃化材料将具有适当的强度，用于土壤稳定和结构加固目的。实验将展示一种在加工过程中通过使用添加剂来改变母质土壤-岩石性质的方法。一系列参数测试将使人们对形成的合成岩石的岩土性质的过程操作变量有一个基本的了解。这项技术的商业市场包括高速公路部门(州和联邦)、机场当局、市政当局、联邦财产和国家基础设施机构以及各种行业。阐述了该技术在路基维修和新建工程中的应用，其中“局部”路基失稳问题较为突出。

This Small Business Innovation Research (SBIR) Phase I project will explore a novel subgrade stabilization process that injects readily available materials into the vitrification zone, eliminating subsidence concerns as the soils densify during vitrification. The problem of in-situ soil stabilization of poor to marginal foundation and slope materials is endemic throughout the transportation system. Localized subgrade failures in highway fill and around ancillary structures, like bridges and culverts, constitute a major maintenance problem in every highway and road system. Phase I will establish process feasibility by developing a robust and versatile technology that produces subgrade synthetic rock from soils. The vitrified material will have suitable strength for soil stabilization and for structural reinforcement purposes. Experiments will demonstrate a method to modify the parent soil-rock properties by the use of additives during processing.A series of parametric tests will develop a fundamental understanding of process operational variables upon geotechnic properties of the synthetic rock that is formed.The commercial market for the technology includes highway departments (state and federal), airport authorities, municipalities, federal properties and national infrastructure agenciesm, and various industries. Application of the technology is expexted in both maintenance of subgrade and new construction where 'local' subgrade instability issues are important.