Parameters of Sprayed Concrete - Water Cement Ration | South Africa

The water/cement ratio is a key factor for the workability, performance and durability of concrete. The water/cement (w/c) ratio of correctly ​
applied sprayed concrete can be expected to be below 0.5. In-situ w/c ratios usually vary from 0.4 to 0.5. In the case of dry-mix sprayed concrete, the w/c ratio should be assessed by the continuous monitoring of consistence during spraying. See also EN 14487-1 [32].

Influence of the w/c ratio on the compressive strength of sprayed concrete

Figure 2-1: Influence of the w/c ratio on the compressive strength of sprayed concrete