Pavement Strengthening by In-Situ Rehabilitation and Semi-Rigid Pavement Methods

摘要

In-situ rehabilitation (ISR) by using chemical stabilization is a proven approach in strengthening overall performances and durability of pavements, which is remarkably green and sustainable. Semi-rigid pavement (SRP) as a wearing course can significantly improve surface performances and lifespan of pavements under heavy wear/tear conditions and chemically attacks. This paper introduces both ISR and SRP methods with their performances and advantages. To rehabilitate existing materials including soils, stones and solid wastes can quickly form a "Floating Semi-Rigid Platform" as a new or repaired pavement over soft grounds. Meantime comparisons among rigid pavement, flexible pavement and SRP were discussed with a conclusion that SRP can fully combine advantages of both rigid and flexible pavements. Several pavement quick repairing/strengthening patterns based on 20 years successful applications and different applied thicknesses of SRP drawn from 10 years satisfactory installations were summarized and recommended.