Fig.6
From: Study on the efficacy of amorphous calcium carbonate as a consolidant for calcareous matrix
The variation trend of a water vapor permeability coefficient of simulated sample and b water absorption rate of simulated sample with the increase of ACC content. The purple bar corresponding to 2Si in a expressed the water vapor permeability coefficient of simulated sample containing 3-Glycidoxypropyltrimethoxysilane with 2wt% of its own mass; c Picture of the blank sample after soaking in water for 1Â min; d Picture of the simulated weathered sample with 1wt% ACC after soaking in water for 24Â h