INJECT EXPANSIVE is a special mortar formulated for use in the geotechnical field, specifically for the construction of micropiles and anchor bolts in strand or bar, nails, bolts and valved systems, in rocks and soils of any nature. The product is a premix based on type IV cement (UNI EN 197-1), with low chloride and sulphate content, additives, selected sand of a size to allow mixing and conveying with the most common equipment, as well as the injection of tie rods or selective repeated injection (IRS) of valved systems.