Characteristic face-specific relaxation times are obtained for each electrode by Electrochemical Impedance Spectroscopy (EIS).
For these systems, the capacitance (C(ϕ)) plots are well differentiated for the two faces, and co-adsorption of OH− was evaluated from resistance parameters. In the case of Ag(hkl)/K3PO4 systems, highly irreversible processes were observed, resulting in different charge values from integration of anodic/cathodic peaks. For Ag(111)/H3PO4, a coverage of about 0.024 ML was calculated from anodic/cathodic j−V profiles. A reversible process was observed for Ag(hkl)/KH2PO4 systems from j−V profiles, where a value of 0.07 ML was obtained. Lihat lebih banyak.The influence of the geometry of the silver crystalline faces (111) and (100) on the adsorption/desorption processes of phosphate species as a function of potential is studied, and the surface coverages (θ) and the relaxation times (τ) are compared. The industrial manufacture of hollow blocks cooked (55,296 units/ day) in the plant under construction (ALFABOLIVAR) is an important project with local raw material in order to supply the country and export possibilities. The BTC block, now in the spotlight worldwide, is the main goal as a structural material and alternative bio-climatic and ornamental. The resistors obtained direct compression (3 to 7.83 MPa), flexural (0.35 to 0.79 MPa) and its relatively low water absorption values (5.5 to 7.6%), high impact strength (1.0 to 5.67 m), among others, give interesting properties for use in construction and walls in areas of abundant reserves of sand and clay materials, mainly. FUNDA-GEOMINAS, as a line of research on these unconventional materials characterization has been researching its manufacturing and laboratory tests, particularly as regards raw solid blocks, compressed, of clay materials that occur in the Mesa Formation, with sand and stabilizers of ecological interest, such as: low Portland cement (5-8%), hydrated lime (2-4%), smelting slag (3-4%), ground glass (2-4%), in which manufacturing cycle energy input is relatively low, which also generates less environmental impact, but with acceptable geomechanics resistance compared to concrete block and other blocks.
Today the soil cement, ceramic brick, thermo-clay, BioBlock, thermite, the sudorite, compacted earth block with or without cement and other stabilizers, are common and extensive use. Housing construction using earthy clay materials in the world, since immemorial time, has been a valid alternative, inexpensive and environmentally displaying numerous advantages.
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