| The SMART-CL is a Rapid Chloride-Ion Permeability Test apparatus as per ASTM - 1202 - 05 made by people who understand High Performance Concrete. Having conducted hundreds of tests on different concretes, the apparatus has been developed and fine-tuned over a period of 3 years and has been used extensively on prestigious demonstration projects of the hvfacproject-India to assess the permeability of concrete.
Concretes incorporating fly ash or silica fume are less permeable to deleterious elements and thus are more durable than conventional concretes. The Rapid Chloride-ion Permeability Test (RCPT) was designed to assess the resistance of concrete to the penetration of chloride ions, an indicator of its permeability. The SMART-CL is a fully self-contained, complete kit as per ASTM C 1202-05 . There are two models available with features listed below : SMART CL1 - With a provision for tests on 3 specimens simultaneously . The Power supply unit for this model supplies a constant Voltage of 60 V DC and displays the Current in milliAmperes in each channel on large bright digital readouts on the unit front panel. These are to be recorded manually every 30 mts. by the operator. This is our most popular model preferred by universities and institutions where economy along with simplicity is required. SMART CL2 - This model - a result of further R & D, allows to conduct tests on 6 specimens simultaneously. The Automatic Data Acquisition unit ( DAQ) supplies a constant DC current of 0 - 80 V ( user specified ) and collects Current and cell Temperature parameters every 5 minutes and stores the data. The accompanying software, to be run on a laptop / dedicated PC ( Client supplied) shall also control the test, shutting it off on user defined conditions of Time elapsed, max. Current as well as max. Temp. The PC monitor displays the test parameters in Real-Time and a report in attractive format along with a plot of Current vs. time is generated at the end of the test. PROCEDURE The concrete cylindrical specimens - 50 mm thk. are first prepared by coating the dry side surface with a special sealer and then vacuum conditioning it for 22 hrs. as per the ASTM Codal procedure. The saturated specimens are then mounted in the Plexiglass cells, the sealant applied and the reservoirs filled with NaCl & NaOH solutions respectively. The cell terminals are then connected to the Power supply unit through cables provided – one for each channel and the test started. In case of SMART CL1 the current is recorded manually from the digital readouts of the power supply unit - every ½ hr., for 6 hrs. The recorded values of specimen diameter and current are fed into the accompanying spreadsheet software to get the final RCPT value. For SMART CL2 the current and temperature are automatically picked by the Automatic Data Acquisition System ( DAQ) every 5 minutes and these parameters displayed on the PC monitor in real time. The software allows the user to shut off any particular channel by choice as well as display a Current vs. time elapsed plot and report at the end of the test . The passing current magnitude depends on the ions passing through the pores of the concrete specimen (including chloride ions), which in turn depend on the permeability of concrete. The total charge Q passed in 6 hrs. is calculated as per the formula : Q = 900 × ( I0 + 2×I30 + 2×I60 + 2×I120 ........+ I360 ) The value is adjusted for specimen diameters other than 95 mm . This charge in coulombs is an indication of the Cl-Ion penetrability as listed below. Charge passed (Coulombs) Chloride ion Penetrability > 4000 High 2000 - 4000 Moderate 1000 - 2000 Low 100 - 1000 Very low < 100 Negligible The kit is accompanied by a free demonstration cum training of the clients' staff in our laboratory as well as technical support later. |
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| SMART TECHNOLOGIES REGD. OFF. : G - 27 SAKET, N. DELHI - 110017, PH.: 09818184483, E-mail : sing.tp@gmail.com LABORATORY : SUKHMANI, OPP. ANAND MARG ASHRAM, GADAIPUR, MEHRAULI, PH. 26802388 |
| from SMART TECHNOLOGIES |
CLIENT LIST : • Metro Tunneling Group • Larsen & Toubro ( ECC Div.) • Continental Engineering Corporation • Soma Enterprises • Senbo Engg. • ITCO Lab. Kuwait • Curtin University - Malaysia , Perth • Curtin University - Perth |
| Indian Institute of Technology, Kanpur |
| DELHI METRO |
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