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RESEARCH LABORATORY EQUIPMENTS

 

 

Equipments available in our laboratory:

NANOMATERIALS CHARACTERIZATION

Characterization of the nanomaterials synthesized is carried out according the following procedures available in our laboratory.

 

e1.jpg   Rheological properties of sols are investigated by using a a concentric cylinder VISCOSIMETER (model DV-II+ with UL/Y adapter) from Brookfield.
     
e2.jpg   The pore structures of the gels are characterized by NITROGEN PHYSISORPTION (Sorptomatic 1990, from Fisons Instrument).
     
e3.jpg   The chemical bonds of the nanomaterials are analyzed by FOURIER TRANSFORMER INFRARED SPECTROPHOTOMETRY using a FTIR-8400S from Shimadzu (4 cm-1 resolution) in the region from 4000 to 400 cm-1.
     
e4.jpg   The mechanical properties of the gel monoliths obtained are investigated by using the UNIAXIAL COMPRESSIVE STRENGTH TEST. The equipment is a Shimadzu Autograph AG-I testing machine.
     
e5.jpg   The surface roughness of coatings is investigated using ATOMIC FORCE MICROSCOPY (AFM, Nanotec Electrónica S.L.)
     
e6.jpg   The effectiveness of the coating materials in providing hydrophobic protection are characterized by MEASUREMENT OF THE CONTACT ANGLE according to the sessile drop method, using a commercial video-based, software-controlled contact angle analyzer, model OCA 15plus, from Dataphysics Instruments.

 

NANOMATERIALS EFFECTIVENESS

Effectiveness of the nanomaterials on stones, glasses and other materials is evaluated according the following procedures available in our laboratory:

 

e7.jpg   Improvement in the mechanical robustness of the substrates after the products application is evaluated using THE DRILLING RESISTANCE MEASUREMENT SYSTEM (DRMS, Sint Technology).
     
e8.jpg   We also evaluate changes in the mechanical resistance of the substrate by means of the VICKER HARDNESS TEST, using an Universal Centaur RB-2/200 hardness tester. 
     
e9.jpg   We evaluate changes in the pore structure of the substrate by means of the ULTRASONIC RATE TESTER from Steinkamp.
     
 e10   Changes in the pore structure of the substrate after the products application are also evaluated by MERCURY INTRUSION POROSIMETRY (MIP, Pascal Porosimeter from Fisons Instruments).
     
 e11   WATER VAPOR PERMEABILITY is determined using an automatic set-up developed in our laboratory, based on the standard cup test. More information about the procedure in: “M.J. Mosquera, D. Benitez, S.H. Perry, Cem. & Concrete Res., 2002, 32, pp 1883-1888”.
     
 e12   The changes in color of stones or other building materials after products application are determined by using a SOLID REFLECTION SPECTROPHOTOMETER, Colorflex model, from Hunterlab.

 

NANOMATERIALS DURABILITY

Effectiveness of the nanomaterials on stones, glasses and other materials is evaluated according the following procedures available in our laboratory:

 

e13   Since soluble salts are one of the most pernicious agents responsible for the decay of stonework, we evaluate the resistance of stone treated with our novel products to salt crystallization by using a SALT MIST CHAMBER (Dycometal) according the standard UNE-EN 14147. 204. Natural stone test methods. Determination of resistance to ageing by salt mist. AENOR.
     
e14   Durability to UV light of the substrates treated is evaluated by using a UV LIGHT CHAMBER with 2 tubes of 15 W (Vilber Lourmat CN15.CL). This chamber is also used by evaluated the self-cleaning properties of silica-titania nanocomposites prepared in our laboratory.

 

 

Universidad de Cádiz facilities:

 

We also use the following equipments available at University of Cadiz:

  • Scanning Electron Microscopy
  • Transmission Electron Microscopy
  • Energy-dispersive X-ray Spectroscopy (EDX)
  • X-ray diffraction (XRD)
  • Resonance Magnetic Nuclear (RMN)…
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