Figure 4: In-situ psychrometer measurements in two columns supporting overhead structure

The column treated with Coating 1 is also cracked by ASR. p~ in the column started at 1200 kPa, but fell to 300 kPa after the period of watering. Three days later p~ has increased but was still at a relatively low 800 kPa. These results confirm that water can enter a concrete member through surface cracks, even if the surface has been treated. The rate at which the structure dries again will depend on the type of treatment and the climate.