Photograph register of the consolidation by water immersion tests of the samples with disk geometry composed by bonding materials. Samples composed by: the same quantity of base material (5 g), same weight fraction of combined particle size (50% w/w of <20 μm, 50% w/w of 20–74 μm), same quantity of pH 3 hydrochloric acid solution (6% w/w relative to 5 g of base material) and different weight fractions of bonding materials (5% w/w or 10% w/w relative to 5 g of base material). One hour after water immersion test.