Global Journal of Human Social Science, C: Sociology and Culture, Volume 23 Issue 2

Figure 1: Operation of the gun. Gun Point Mix (GPM) system. Note the helical path of the water flow. The gun has two small holes that project water at an angle that generates torsion of the air jet so that it produces a complete mixture of air with cellulose and water II. B ackground Classical works on restoration materials for the production of poultices [7] [8] Naud et Al 1990 (Redman 1999), establish the weight ratio between dry cellulose pulp and water of 1:5 as the optimal for workability and adhesion. In addition to characterizing the solid materials, they describe the flow and ebb of the liquid produced by the interaction of the two capillary systems (that of the pulp of paper and that of the substrate). This interaction between flows and ebbs, in its dynamic aspect, has not been studied in depth; we quote ([9] GISBERT) as the only case. Subsequent syntheses, focused mainly on desalination [10] Vergès-Belmin V. and Siedel H. (2005), investigate many aspects of the poultice-substrate system, although they do not characterize in detail the advection flows and ebbs. Most of the works focus on characterizing the porous system of the poultices and the substrate in desalination-oriented development. The main conclusion until 2005 was that in order to obtain a dominant advection towards the paper fiber (which is a necessary requirement for an efficient desalination), the poultice must have a finer porous system than that of the substrate. [11] SAWDY A., HERITAGE A. and PEL L. (2008) studied the behavior of the poultice, indicating that it is based on the principles of diffusion and / or advection and that the efficiency of the method depends on the type of poultice, specifying that an average size of the poultice’s pore diameter smaller than that of the substrate is recommended. [12] [13] BOURGUIGNON 2009 synthesis describes all the previous experiences of automated projection systems and insists on the important role of the discontinuity between the poultice and the substrate in terms of the interaction between both subjects. This author studies the adhesion of the poultice (handmade) and establishes the optimum water values in the kneading in order to maximize adhesion. It must be noted that little attention has been paid to the methodologies of preparation and placement of the poultice in scientific literature until now; in this sense, the work of [13] Bourguignon is a remarkable contribution. [14] Bourgès, A., and Vergès-Belmin, (2010) develop three tests to measure the consistency, workability and degree of adhesion of a poultice inspired in the tests used to characterize the setting of mortars. [15] Lubelli B., van Hees R.P.J.2010 and [16] Verges-Belmin et al. © 2023 Global Journals Volume XXIII Issue II Version I 2 ( ) Global Journal of Human Social Science - Year 2023 C Poultices Generated Mechanically with Compressed Air: “Gunpoint Mix System” Characterization and Properties. Comparison with “Handmade” Poultices