crust formation, limestone, Schimmelentfernung, cultural heritage, Lösungsmittel, Schimmelpilz, Dahlen castle, mapping  
trial testing, damage, marble, SEM, Delft University of Technology, marble sculpture, seventh framework programm, Denkmalpflege microbiological growth, silicic acid ester, Denkmalschutz, microscopy, render, drilling resistance, mildew, St. John Cathedral Torun, Dr. Ziegenbalg GbR
stonecore, stone, Technology, chemie, algae, GPR tomography, old monument, Algen, grout, Opuka, Alkohol, gypsum crust, parish church, analyses, hair crack, particle size, Ancient Theater of Megalopolis, hardness test, particle size analysis, Ancient Theater of Sikyon, historical buildings, Partikellasergranulometer, application, historical plaster, peeling test, artificial stone, historische Putze, strengthening, Beton, hydrophobierend, penetration, biological colonization, Hydrophobierung, penetration behavior, bricks, IBZ, pitting, Calciumcarbonat, Industrial Microbiological Service Ltd, plaster, calciumhydroxide, injection, powdering, calciumsilicat, injection mass, putty, calosil, Institute of Art and Technology Vienna, Putz, carbonate, ITAM AS CR v.v.i., Putzfestigkeit, castle pernsteijn, ITAM, rectory, cathedral, Kalk,refurbishment, cathedral St. Barbara, Xanten, remover, cathedral Xanten, Kalkstein, Riss, Cathodoluminecence, Kalksuspension, Restaurierung, Ingenieurbüro Dr. Ziegenbalg GbR, Kalziumhydroxid, Restaurierungsmaterial, church Hochelten, Karbonatisierung, RESTAURO, cloister, karsten tube, restoration, collaborative project, kieselsäureester, samples, colloidal system, kolloidal, sanding, compressive strengh, kolloidales Calciumhydroxid, Sandstein, concrete, kse, sandstone, conservation, Kutna Hora, Sanierung, consolidant, Leuben castle, schadenskartierung, consolidation
 
 
monument, Stein, eu, Moos, Steinfestigung, EU-Projekt, mortar, Steinkonservierung, european level
 
Mörtel, Steinsanierung, Festigung, moss, stone, fracture, mould, stone consolidation, Flechten, Nanokalk, stone strengthenerGEOTRON  
   
GEOTRON, originally founded as GEOTRON-ELEKTRONIK by Günter Krompholz, is today an entity specialised in the production of ultrasonic measurement devices for non destructive strength determination of concrete and natural stone. Based on experiences of more than 40 years complete measurement systems including highly sophisticated software are pro-
GEOTRON
duced in house. The product spectrum is completed by sensors and related accessories.
A second product line concerns drilling resistance devices. These are sold under the brand name TERSIS. It is the newest product of GEOTRON, development was finished in 2005. At that time it is the most sophisticated device available in the market.

The first ultrasonic measurement devices for characterisation of stone and concrete were produced in 1964, since that time this is the main business of GEOTRON. Since May 1988 Rolf Krompholz is CEO of GEOTRON. He has created many new contacts and research cooperations with universities and scientific research organisations dealing with stone conservation as well as concrete characterisation.
partner, stonecore, stone, Technology, chemie, algae, GPR tomography, old monument
The measurement devices of GEOTRON are in accordance with the following standards:
 
Algen, grout, Opuka, Alkohol, gypsum crust, parish church, analyses, hair crack, particle size, Ancient Theater of Megalopolis, hardness testEN 12504-4: 2004 and EN 14579:2004: Determination of the ultrasonic speed of the longitudinal wave
particle size analysis, Ancient Theater of Sikyon, historical buildings, Partikellasergranulometer, application, historical plaster, peeling testEN 14146:2004; Determination of the dynamic modulus of elasticity
artificial stone, historische Putze, strengthening, Beton, hydrophobierend, penetration, biological colonization, Hydrophobierung, penetration behavior, bricksDIN 1048:1991, prEN13791: 2003; Evaluation of the pressure strength of concrete.
 
The developed measurement devices and techniques are protected by the following patents:
 
framework 7, nanolime, stonecore, fresco, nanomaterial, Strotmann und Partner, Fresken, Nanomaterialien, stucco, frontage, nanoscience, tension strengh, fungal growthDE 42 33 958: „Verfahren zur Gefüge-Zustandsermittlung von Gestein“
nanosol, Tower Litomysl, Fungizidfrei, nanotechnologies, treatment, geophysics, natural stone, treatment, GEOSERVICE, Fugenmörtel, TU Delft, GEOTRON ElektonikDE 196 29 485: „Verfahren und Vorrichtung zur Bestimmung der Druckfestigkeit von Beton während dessen Erhärtung
   mittels Ultraschall-Geschwindigkeitsmessung“
 
GEOTRON-ELEKTRONIK is owner of the trade names „CONSONIC’ and GEOTRON’. The head office of GEOTRON is the city of Pirna. The research laboratory contains complete equipment for the development of ultrasonic and drilling resistance measurements. GEOTRON is a SME with four employees.
 
IBZ, pitting, Calciumcarbonat, Industrial Microbiological Service Ltd, plaster, calciumhydroxide
IBZ, pitting, Calciumcarbonat, Industrial Microbiological Service Ltd, plaster
Radar
Sandsteinbruch
 
  Rasterelektronenmikroskopie, water repellent, Fugen, Torun, work package, Injektionsmassen, Leuben, XRD, Haarriss, Sumpfkalk, Ziegel, biologischer Befall