I have a project wherein some 25,000 sq ft of existing shotcrete is to undergo varying degrees replacement, repair and restoration. It is on slopes varying from 1:1 to 1:10 or so. It is approximately 40 years old in most cases. It is in a fairly arid climate (Southern New Mexico) with little rainfall and typically low humidity. The subgrade is non-plastic gravelly sandy material. It was reinforced with wire mesh (looks like 6x6x10x10). I'm interested in any techniques and/or materials that might be applicable

RepairQ I have a project wherein some 25,000 sq ft of existing shotcrete is to undergo varying degrees replacement, repair and restoration. It is on slopes varying from 1:1 to 1:10 or so. It is approximately 40 years old in most cases. It is in a fairly arid climate (Southern New Mexico) with little rainfall and typically low humidity. The subgrade is non-plastic gravelly sandy material. It was reinforced with wire mesh (looks like 6x6x10x10). I’m interested in any techniques and/or materials that might be applicable
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I recommend reading the following publications in Shotcrete Magazine: “Shotcrete for Ground Support: Current Practices in Western Canada”, by C.Chan, R Heere, & D. R. Morgan, Part I printed in Winter 2002, and Part II printed in Spring 2002. “Soil and Rock Slope Stabilization Using Steel Fiber Reinforced Shotcrete in North America”, by M.Ballou & M Niermann, Summer 2002.