We are bracketed with well-reckoned Manufacturers, Exporters and Suppliers of precision-engineered Rapid Chloride Permeability Test Apparatus. Renowned for its swift functionality and long service life, our Rapid Chloride Permeability Test Apparatus is the best in the market. We provide it in varied specifications and offer individually tailored ones as well. Interested customers can get Rapid Chloride Permeability Test Apparatus customized as per requirement and place bulk orders as well.
More About Rapid Chloride Permeability Test Apparatus : 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.

Description :

• LI- RCPT-1 - 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.
• LI- RCPT-3 - This model - a result of further R & D, allows conducting tests on 4 specimens simultaneously. The Automatic Data Acquisition unit ( DAQ) supplies a regulated DC current of 60 V (with provision for +/- adjustment), displays the process values ( Current & Cell temperature parameters ) in real time and stores this data every 5 minutes (user settable interval). The programmed unit shuts the test off once the user specified period (factory setting - 6 hrs.) is over. After the test, the user simply removes the storage device ( special pen drive) from the DAQ unit and connects it to the PC / Laptop where the data in X-cel format can be studied and further worked with.

Procedure :

• The concrete cylindrical specimen - 50 mm thick is first prepared by coating the dry surface with a special sealer and then vacuum conditioning it for 22 hrs. as per the ASTM code procedure. The saturated specimen are then mounted in the Plexiglass cells, the sealant applied and the reservoirs filled with NaCl & NaOH respectively. The cell terminals are then connected to the power supply unit through cable provided –one for each channel and the test started. 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. 
• In case of LI-RCPT-1 the current is recorded manually from the digital readouts of the power supply unit – every ½ hr. for 6 hrs. The recorded value of the specimen diameter and current are fed into the accompanying spreadsheet software to get the final RCPT value.

• The  total charge Q passed in 6 hrs. is calculated as per the formula :
  
  • Q   =   900 x ( 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.
• For LI-RCPT-3 the current and temperature are automatically picked by the Automatic Data Acquisition System (DAQ) every 5 minutes and  these parameters  displayed on the LED panel in real time. After the specified time set by the user (factory setting - 6 hrs.) elapses, the test is shut off. The user may then conveniently transfer the stored data to a PC / laptop and study / process it later.

We are bracketed with well-reckoned Manufacturers, Exporters and Suppliers of precision-engineered Rapid Chloride Permeability Test Apparatus. Renowned for its swift functionality and long service life, our Rapid Chloride Permeability Test Apparatus is the best in the market. We provide it in varied specifications and offer individually tailored ones as well. Interested customers can get Rapid Chloride Permeability Test Apparatus customized as per requirement and place bulk orders as well.
More About Rapid Chloride Permeability Test Apparatus : 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.

Description :

• LI- RCPT-1 - 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.
• LI- RCPT-3 - This model - a result of further R & D, allows conducting tests on 4 specimens simultaneously. The Automatic Data Acquisition unit ( DAQ) supplies a regulated DC current of 60 V (with provision for +/- adjustment), displays the process values ( Current & Cell temperature parameters ) in real time and stores this data every 5 minutes (user settable interval). The programmed unit shuts the test off once the user specified period (factory setting - 6 hrs.) is over. After the test, the user simply removes the storage device ( special pen drive) from the DAQ unit and connects it to the PC / Laptop where the data in X-cel format can be studied and further worked with.

Procedure :

• The concrete cylindrical specimen - 50 mm thick is first prepared by coating the dry surface with a special sealer and then vacuum conditioning it for 22 hrs. as per the ASTM code procedure. The saturated specimen are then mounted in the Plexiglass cells, the sealant applied and the reservoirs filled with NaCl & NaOH respectively. The cell terminals are then connected to the power supply unit through cable provided –one for each channel and the test started. 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. 
• In case of LI-RCPT-1 the current is recorded manually from the digital readouts of the power supply unit – every ½ hr. for 6 hrs. The recorded value of the specimen diameter and current are fed into the accompanying spreadsheet software to get the final RCPT value.

• The  total charge Q passed in 6 hrs. is calculated as per the formula :
  
  • Q   =   900 x ( 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.
• For LI-RCPT-3 the current and temperature are automatically picked by the Automatic Data Acquisition System (DAQ) every 5 minutes and  these parameters  displayed on the LED panel in real time. After the specified time set by the user (factory setting - 6 hrs.) elapses, the test is shut off. The user may then conveniently transfer the stored data to a PC / laptop and study / process it later.