![]() ![]() This special material is formed by mixing either high or low viscosity epoxy resins with fine aggregates/sand and is used to fill voids or gaps which are very big in size. These binding agents can also be effectively used in applications that require attaching steel plates to damaged structures. ![]() On the other hand, epoxy resins which have high viscosity are generally used for surface coating purposes and for filling large cracks or holes. The viscosity of some epoxy resins is so low that they can be injected into fine cracks as well. Their composition can be changed as per requirement and the ingredients required to produce a suitable epoxy resin are mixed just before they are applied. Apart from that, the use of shear keys can further ensure proper shear transfer between the existing layer and the new layer of concrete.Įpoxy resins are chemical mixtures with high tensile strength which serve as exceptional adhesive agents. In such applications, an appropriate epoxy adhesive is also used to assure proper strength between the surface of the damaged structure and the shotcrete mix. Dry mix shotcrete is most applicable in the repair of concrete elements. Whereas, the dry mix process requires the damp mixture of cement and aggregates to be passed through the delivery hose to the nozzle and water is added to the mix in the nozzle. The wet mix process involves water being added to all the ingredients of the mix before it enters the delivery hose.
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