27 July 2020
Seawalls are found throughout the world along lakes, rivers, and coastlines. Although they all serve a similar purpose, there are different types of seawall configurations and designs, such as block walls, concrete walls, or steel sheet pilings - all of which are subject to the effects of water, limiting their effective lifespan and ultimately jeopardizing nearby structures.
Over time, seawalls begin to develop small defects due to fluctuating tides, and thermal expansion and contraction. Initially, these defects are insignificant and often unnoticeable. However, as water from the positive side of the seawall begins to infiltrate through the defects, contacting reinforcing steel within concrete or through joints of steel sheet piles, it enters and begins to saturate soils behind the structure. As water levels rise and fall, a vacuum is created which easily pulls the saturated supporting soils through defects into the body of water – this creates voids, settlement, depressions, sinkholes, and overall instability of the structure.
Cost-effective repair with urethane injection grouts
Avanti's injection grouts have been specifically designed to seal these defective areas from further infiltration/exfiltration by creating a watertight barrier, and fill voids that have developed by binding existing soils together preventing further erosion. Utilizing expansive urethane injection grouts – such as AV-275 Soilgrout or AV-278 Low Vis Hydro - for seawall rehabilitation has proven to be a far more expedient and economical approach to extending the life expectancy of seawall structures plagued by erosion and loss of soils.
For more information about how our urethane injection grouts are used in seawall rehabilitation, or any of our injection grout products or applications, contact your Avanti Regional Manager today or give us a call at 800.877.2570.