(1) Types of shotcrete

                 Fiber-Reinforced Shotcrete
                     Steel Fiber
                     Glass Fiber (chopped glass fiber & resin binder)
                      Synthetic Fiber(nylon, rayon:decrease width of shrinkage cracks)

           Silica-fume Shotcrete
                      Very fine pozzolanic material
                      To increase strength, cohension & adhension
                       More resistance to washout by flow water

               Polymer-modified Shotcrete
                       Polymer emulison replacement of the mixing water.
                       To improve flexural & tensile strength and bond
                       To reduce absorption (because of lower permeability)

               Accelerated Shotcrete
 

(Steel fiber)