Injection grouting is the method of filling the cracks, open joints, voids, or honeycombs, in concrete or masonry structural members. This is done under pressure with a grout material that cures in place to produce the desired results like strengthening a structure and preventing water ingress. Grout is a flowable plastic material and should have negligible shrinkage to fill the gap or voids and should remain stable without cracking, delamination, or crumbling. There are different types of grouts used for the repair and strengthening of concrete and masonry structural members. The selection of the type of grout for the particular type of concrete or masonry repair work should be based on the compatibility of the grout with the original material.
