Concrete repair and Injection grouting is a process of filling the cracks, voids or honeycombs under pressure in concrete or masonry structural members for repairing of cracks, strengthening of damaged concrete or masonry structural members. Grout is a flowable plastic material and should have negligible shrinkage to fill the gap or voids completely and should remain stable without cracking, de-lamination or crumbling. Grout is a particularly fluid form of concrete used to fill gaps. It is used in construction to embed rebars in masonry walls, connect sections of pre-cast concrete, fill voids, and seal joints such as those between tiles.Grout is generally a mixture of water, cement, sand, often color tint, and sometimes fine gravel (if it is being used to fill large spaces such as the cores of concrete blocks).
There are different types of grouts 1.Polymer Injection Grouts 2.Fiber-Reinforced Injection Grouts 3. Cement – Sand grouts. used for repair and strengthening of concrete and masonry structural members. The selection of type of grout for particular type of concrete or masonry repair work should be based on the compatibility of the grout with the original material.
Concrete Repari/ Injection Grouting technique is use for Tunnels, basements, parking garages, dams, you name it, all concrete structures will show cracks on closer inspection . Cracks are created by drying shrinkage, thermal and stress movement, and other causes.
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