Schleibinger Geräte Teubert u. Greim GmbH

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1 The Schleibinger Alkali-Aggregates-Reactivity-Tester What is Alkali-Silica Reactivity? Alkali- silica reactivity is the process in which certain minerals (mostly glass type silica) in the presence of moisture are broken down by the highly alkaline environment of concrete producing a gel that expands creating tensile forces in the concrete matrix which cause cracking of the concrete. The cracking then allows more water to infiltrate into the concrete creating more gel, more expansion etc. Ultimately the concrete fails or disintegrates. Typical indicators of ASR are random map cracking and, in advanced cases, closed joints and attendant spalled concrete. Cracking due to ASR usually appears in areas with a frequent supply of moisture, such as close to the waterline in piers, near the ground behind retaining walls, near joints and free edges in pavements, or in piers or columns subject to wicking action. Petrographic examination can conclusively identify ASR. (* Portland Cement Assosication, Skokie, IL, USA Schleibinger developed the AAR tester. In this test chamber concrete specimen are stored at a temperature between 20 C and 70 C at nearly 100% rel. humidity. The temperature deviation herein is below 0.5K. The temperature is registered continuously and displayed graphically. Over an Internet interface, the Schleibinger AAR-tester maybe controlled remotely.

2 Benefits of the Schleibinger ASR machine inside 100% stainless steel against corrosion bath inside inert gas welded perfect insulation to ensure that the temperature outside is not over 30 C free user programmable temperature curves from room temperature up to 80 C temperature deviation below 0.5K two stainless steel temperature sensors inside up to 4 extra sensors may be connected. fulfilling all RILEM and national standards graphical color display showing all temperatures over time. CF card inside for registration all temperature over time. Network and Internet connection for checking all parameters and temperatures remotely, and if the customer likes world-wide! two 6 kw heating units with backup functionality (machine can run also with one unit) triple overheating protection: mechanical switch, electronically and by software contact-less and so wearless switching of the heating unit additional interrupter, if the electronic switch will fault. ground fault circuit interrupter for maximum electrical safety as option a fog generating system, realizing nearly 100% humidity even at room temperature. customer gets a list of all components and necessary spare parts including a complete electrical schematic free lifetime software update. Schleibinger is not only delivering the machine but also all accessories as the specimen containers, castings, high precision length measuring gouge made of carbon fiber material, etc.

3 The machine is running at very important key units and companies like VDZ (German Central Cement Research Inst) Düsseldorf, basf Trostberg, University Bochum, IMP Switzerland EMPA (Federal Swiss Material Testing Institute) Zürich, Switzerland BAM (Federal German Materials testing institute) Berlin, Technical University Hamburg, CEMEX Erft Labor etc Accessories Schleibinger offers also the necessary accessories for the AAR test AAR Specimen Container for specimen sized 75 x 75 x 280 mm³. Inner sitze (l x w x h) 280 x 130 x 400 mm³. Made of 1.5 mm thick stainless steel, complete welded, pickled and passivated. Lid with dripdown tin. Removable grating for concrete specimen at 50mm level, mesh opening 20 x 20 mm. Specimen spacers at 260mm height. Two handholds at the length sides. Weight ca. 6.5 kg AAR Fog Generating System For temperatures below 40 C we recommend the additionally power fog system which makes extreme fine fog and nearly 100% rel. humidity also at low water temperatures. With a high pressure pump and special stainless steel nozzles. The size of the droplets is smaller then 30 micron. The fog function may be controlled with the ACR control unit by duration and intensity. Fog power about 1.2 l /hour. Water quality W10 required. Warranty pump 2 years, nozzles 2 years.

4 AAR Mould for specimen 75x75x280 mm. Made of 10mm thick stainless steel, Weight 11 kg. AAR Shrinkage Gauge for measuring the length change of the specimen 280 x 75 x 75 or cylinders 300 x 150mm. There is a socket in the base plate for fixing a 10 mm ball. Including a digital probe. Resolution 0.5 mikron, accuracity 2.6 mikron. Including a carbon made reference bar 280 mm (or 300 mm). Reference Anchor for the Specimen 14 mm hexagon bolt, central hole M5 (5mm) with contersink 9 mm x 45, stainless steel

5 Technical Data : Application Net. size (lxwxh) Water level Shelfs for the test container Inner cabinet Lid Storing of AAR / ASR / ACR test containers at 60 C and nearly 100% rel. Humidity according to RILEM/TC-ARP/ 01/20 and ASTM C1293 and modifies ASTM C1293 at 60 C 1500 x 1100 x 950 mm 190 mm two stainless steel 2 ca. 750 * 120mm with torque compensated hinge Sensors Heating Controller - heating Controller User interface Interfaces Weight Mains connection RTD PT100 1/10 DIN B 2 x 6 kw 3*230V(or 400V) with over-temperature protection 2 solid state relays 3 phases Side cabinet or remote cabinet for wall mounting Colored touch-screen with online graphic Ethernet /TCP/IP for control and data recording. ca. 500 kg 3 * 32 A / 230/400 V, CEE plug (please ask for other voltages and frequencies) Order codes: AR/ASR Tester AAR Specimen Container AAR Fog System AAR mould AAR shrinkage gauge AAR reference anchor K001 K002 K003 S0113 S0111 S0115