In this extremely specialized field, grouts are used to fill voids and create sub-grade grout barriers in earthen dams, coastal seawalls, underground vaults and tunnel boring operations.
A major advantage of chemical grouting is the ability to strengthen existing soils without the need for excavation or disruption of facility operations.
As the popularity of trenchless technology continues to grow, engineers and contractors are finding that they can use chemical grout to solve a multitude of problems caused by poor soil or excessive water conditions.
A typical joint showing wear due to
a void under the slabs.
A void underneath two slabs at the joint will cause
the joint to become misaligned. Eventually, the edge
of the joints will crack and spall because of the
repeated flexing and abuse.
A chemical grout is injected through holes drilled into the
concrete to fill the voids. Once the void is filled, material
will expand out of the drilled holes, sealing them. The
excess grout is then cut off the slab and the hole is
sealed.
