The geotechnical needs of DOTs and other agencies responsible for roads and bridges are vast. Issues include: Culvert repair Soil stabilization Void filling Concrete slab lifting Sinkhole remediation Slope control Slough control in tunneling
Protecting concrete usually means shielding it from the elements of nature or from harsh manmade chemicals. But it’s not just concrete that needs such protection. Corrugated metal pipe, steel surfaces, material hoppers, rail cars and masonry all can come in contact with corrosive or abrasive materials or harsh conditions.
When CJ Geo, a geotechnical and utility services contractor, received a call about machinery being stuck underneath a roadway, they knew they were in for an interesting challenge. A tunneling machine was boring under both sides of a three lane interstate. It made it completely through one side, past the median, and became stuck on the opposing side with a few feet of the equipment still underneath the road.
Read the case study here.