During the past decade the advent of new bonding materials has provided a means of successful concrete patching and repair along with a reduction in cost and time factors. Among these new materials are epoxy resins which, in combination with sand, form an unusually though adhesive layer that tenaciously bonds old to old and new to old concrete. More recently developed are synthetic latex modifiers. These materials, added to ordinary mortar, provide equally great adhesive properties, along with good resilience, elasticity and durability. Experience has indicated the need to adopt certain procedures with latex modified concrete that vary somewhat from methods followed with conventional mixes. A good procedure for surface preparation is to scrub the surface thoroughly with a detergent and wash it down several times; the surface may also be brushed or blown clean with air. Concrete should be removed from the perimeter of the area to be resurfaced to maintain the minimum thickness of one-half of an inch and to avoid feather edging. A day before resurfacing begins, the area should be thoroughly soaked with water. If rapid evaporation is likely, the area should be covered with damp burlap. Latex loses its stability with air entrainment so no air entraining admixture is used in the mortar. In fact, it is a good idea to add an anti-foamer to the latex before placing it in the mixer. Two to 4 minutes is the recommended mixing time, but to avoid air entrapment it must not exceed 5 minutes. The load should be dumped immediately upon completion of the mixing. The area should be kept damp ahead of the placing of the resurfacing material. Best results are obtained by thoroughly brushing a portion of the mortar into the substrate and then completing the pour to bring the concrete up to the desired finishing level. Because of wet drag, latex mixes are often more difficult to trowel than conventional mixes. To facilitate troweling, the area can be rewet with a 50/50 latex-water. Little pressure is needed for the efficient troweling of latex modified mortar. Twenty-four hours following application, all construction joints should be covered with an epoxy resin sealer. Five days after the placement of latex concrete the road can be reopened.