## 3 Results and Discussion
As far as cubes mass was concerned, the lowest \(A_{1}\) value (0.309 min/g) was obtained at the solid-to-liquid ratio of 1:1, and the highest (0.739 min/g) was gained at the solid-to-liquid ratio of for 1:5, but the value of \(A_{1}\) at the solid-to-liquid ratio of 1:20 (0.674 min/g) was higher than at the solid-to-liquid ratios of 1:3, 1:10, and 1:15. The results allowed for the statement that the rate of mass gain at the early stage of rehydration was the highest at the solid-to-liquid ratio of 1:1 and was the lowest at the solid-to-liquid ratio of 1:5 but the discussed rate at the solid-to-liquid ratio of 1:20 was lower than at the solid-to-liquid ratios of 1:3, 1:10, and 1:15. In case of dry matter, the lowest value of parameter \(A_{1}\) (1.900) was found at the solid-to-liquid ratio of 1:1, the highest (6.125 min/g) was found at the solid-to-liquid ratio of 1:20, and the discussed parameter increased with the increasing amount of rehydration water. It should be however noticed that the \(A_{1}\) values at the solid-to-liquid ratios of 1:1, 1:3, and 1:5 were almost the same (1.900-1.917 min/g). It can be said, therefore, that the rate of dry matter loss at the beginning of rehydration decreased with the increasing amount of rehydration water although mentioned rates at the solid-to-liquid ratios of 1:1, 1:3, and 1:5 can be assumed as the same. As far as mass of water in rehydrated cubes was concerned, it can be stated that the lowest value for \(A_{1}\) (0.198 min/g) was found at the solid-to-liquid ratio equal to 1:1 and the highest (0.581 min/g) was obtained at the solid-to-liquid ratio of 1:20. The results suggest that the highest rate of water gain during the early stage of rehydration was gained at the solid-to-liquid ratio of 1:1 and the lowest rate of water gain was obtained at the solid-to-liquid ratio of 1:20. In case of moisture content, the lowest value of parameter \(A_{1}\) (0.163 min/d.b.) was obtained at the solid-to-liquid ratio of 1:1 and the highest value of parameter \(A_{1}\) (6.533 min/d.b) was gained at the solid-to-liquid ratio of 1:20. This allowed for the statement that the rate of moisture content increase in the early period of rehydration was the highest at the solid-to-liquid ratio of 1:1 and was the lowest at the solid-to-liquid ratio of 1:20. As far as volume was concerned, the lowest \(A_{1}\) value (0.478 min/cm\({}^{3}\)) was found at the solid-to-liquid ratio equal to 1:1, the highest \(A_{1}\) value (0.656 min/cm\({}^{3}\)) was obtained at the solid-to-liquid ratio of 1:5, and the \(A_{1}\) value at the solid-to-liquid ratio of 1:20 (0.555 min/cm\({}^{3}\)) was lower than at the solid-to-liquid ratios of 1:3, 1:10, and 1:15. Therefore, it can be assumed that the rate of volume increase at the beginning of the rehydration was highest at the solid-to-liquid ratio of 1:1 and was the lowest at the solid-to-liquid ratio of 1:5 and the discussed rate at the solid-to-liquid ratio of 1:20 was higher than at the solid-to-liquid ratios of 1:3, 1:10, and 1:15. The effect of the solid-to-liquid ratio on the Peleg capacity constant \(A_{2}\) indicated some characteristics for all investigated variables, namely rehydrated cubes mass, rehydrated cubes dry matter, mass of water in rehydrated cubes, rehydrated cubes moisture content, and rehydrated cubes volume. For each of investigated variables, parameter \(A_{2}\) decreased with the increasing amount of rehydrating water. This means that according to Equation (4), the equilibrium values of rehydrated cubes mass, mass of water in rehydrated cubes, rehydrated cubes moisture, and rehydrated cubes volume increased with the increasing amount of rehydrating water, whereas the equilibrium values of rehydrated cubes dry matter decreased with the increasing amount of rehydrating water. In order to determine the influence of the solid-to-liquid ratio on the Peleg model constants, such formulas were taken which, from the mathematical point of view, are similar to the Peleg model.