Concrete chloride ion flux meter maintenance and maintenance:
■When using the instrument, keep the ambient temperature at 20°C±5°C, relative humidity RH<80%, or the general laboratory environment.
■To prolong the life of the instrument, it is best to keep the instrument at a temperature between 0 and 40°C and a relative humidity of RH < 60%.
â– After the test is completed, turn off the power to the main unit and unplug the power cord.
â– After the test is completed, the main unit of the instrument should be stored in a dust-proof, moisture-proof, sun-protective, and anti-leaching environment.
â– After the test is completed, the contents of the full water meter are cleaned, and stored in a dry place. Turn off the switch and unplug the power cord.
â– After the test is completed, the plexiglass battery holder should be cleaned, dried, and stored neatly.
â– After the test is over, the ends of the wire and temperature sensor are wiped clean with a dry cotton cloth and stored neatly.
â– should be arranged and managed by trained or skilled personnel.
Concrete chloride ion flux detector system configuration:
â– Concrete Chloride Ion Flux Tester â– Specimen Fixture â– NJ-BSJ Concrete Intelligent Vacuum Water Conservancy Machine
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Concrete chloride ion flux detector test procedure:
â– Cut the concrete standard sample into a test piece with a thickness of 50mm;
â– The sample is vacuum-saturated in a concrete intelligent vacuum saturator;
â– Mount the sample after the vacuum is saturated on the sample holder;
â– Inject NaCl (negative) and NaOH (positive) solutions into the fixed concrete specimen fixtures.
â– Connect the power supply of the concrete fluxmeter and the positive and negative electrodes of the sample holder;
â– Connect the test host, control the test software, and get the test results in 6 hours;
â– Data is automatically saved and data can be printed.
Concrete chloride ion flux detector Note:
â– Before starting the test, make sure that the power switch and each channel switch are turned off and check that all connections are correct. The temperature sensor is inserted into the anolyte solution (NaOH) or placed in the environment.
â– At the beginning of the test, first turn on the power switch, and then start the CABR-RCP9 chloride ion flux software; at the end of the test, first turn off the CABR-RCP9 chlorine ion flux software, and then turn off the power switch.
â– Do not insert or pull the plug as you like during the test. Do not disconnect the power at will.
â– Workers should wear rubber gloves during operation to prevent NaCl and NaOH solutions from causing damage to workers' skin.
â– The installation of the plexiglass battery holder with the test piece must be well sealed and no leakage of liquids can occur.
â– The anode of the battery holder (connecting the positive electrode and the red terminal) is filled with 0.3 mol/l NaOH solution, and the cathode cell (connected to the negative electrode, black terminal) is filled with a 3% sodium solution (mass fraction).
Concrete chloride ion flux detector use overview:
Corrosion of concrete steel reinforcement is the primary factor influencing the durability of concrete. According to statistics, the durability damage of concrete caused by corrosion of reinforcing steel accounts for more than 40% of all damage, and chloride ion erosion is the main cause of steel corrosion. The DTL Concrete Chloride Ion Flux Tester is used to measure concrete penetration resistance (compactness), an important index for durability of concrete. The test index is the 6-hour electric flux value (coulomb) of the concrete test piece, which is fast. Evaluate the ability of concrete to resist the penetration of chloride ions.
Concrete chloride ion flux detector Product features:
â– Embedded computer control, power failure and power-down data saving, advanced technology, excellent production, reliable and stable performance, high measurement accuracy;
â– Large-screen liquid crystal display, with real-time display, printing and analysis and calculation functions, can be used directly from the computer and the host computer to facilitate outdoor on-site inspection;
â– Standard RS232 serial port communication, connecting with automatic PC software, can output electrical flux test report and generate curve, print analysis and archive;
â– Short circuit automatic protection design to avoid short circuit damage caused by the instrument;
â– Imported material production jigs, high measuring accuracy, easy to use and convenient;
â– Each time two groups (6 blocks), 3 groups (9 blocks), 4 groups (12 blocks) or 5 groups (16 blocks) of concrete test blocks can be tested simultaneously;
â– With the latest intelligent integrated vacuum water machine;
Concrete chloride ion flux detector instrument specifications:
â– Host size: 385*345*145(mm)
â– Main unit weight: 5 kg
â– Host Dimensions: 530*200*420(mm)
â– Saturated machine weight: 32 kg
â– Saturated machine size:750*680*400(mm)
â– Flux Accessories Weight: 9 kg
â– Flux fittings Dimensions:440*350*210(mm)
â– board weight: 46 kg
Concrete chloride ion fluxmeter implementation standards:
■US ASTM C1202 and AASHTO T277-05 Standards ■National Standard “Test Methods for Long-term Performance and Durability of Normal Concrete†(GB/T50082-2009)
â– Provisional Technical Conditions for High Performance Concrete for Passenger Dedicated Lines (Iron Construction [2005] No. 160)
â– Technical specifications for anti-corrosion of concrete structures in harbor construction JTJ275-2000
â– Concrete chloride ion flux detector (JG/T261-2009)
Concrete chloride ion flux meter technical parameters:
■Evaluation ability:C30～C50 Portland cement concrete ■Working voltage:～220VAC 60VDC
■Test channel: 6 channels, 9 channels, 12 channels, 16 channels optional ■Working environment: 0°C~50°C Humidity≤75%
â– Measurement error: <1% Operating current: 0-360mA
Features:
★ Quickly measure the concentration of chloride ion in the sample in 30 seconds ★ Direct display of liquid crystal display, direct operation, easy to use ★ Original PC software, with national computer software copyright ★ unique anti-ionizing agent, removal of cyanogen and ammonia oxidation effects and Manganese, lead and other metal ions complex effect ★ Built-in micro-printer instant printing, easy to use ★ Large-capacity data storage, can store 100 test data, continuous data recording, safe and reliable ★ Test object: sea sand, sand, new Mix concrete, hard concrete, cement, stone, admixture, soil, concrete mixing water and other water-soluble chloride ions.
Detection principle:
The ion selective electrode (ISE) ISE method was used to quickly determine the water-soluble chloride ion content of concrete, gravel, and admixtures. The measurement range of chloride ion concentration is 1.0×10-1 to 1.0×10-4 mol/L. The equipment is easy to operate, the data is accurate and fast, and the automatic data processing is an advanced electrical test product that can rapidly measure the chloride ion content.
Technical Parameters:
★ supply voltage: AC 220V
★ working voltage: DC 7.5V
★ Measurement accuracy: < 10% (accuracy of measurement results is controlled within 1%)
★Temperature error: <=1°C
★ Printer working voltage: DC 5V
★Data storage capacity:>100
★ PC communication parameters: baud rate 2400
★ Collection time: 30 seconds ★ Host weight: 2.5 kg
★LCD size: 128*64
Test steps:
★ The sample is weighed, and an appropriate amount of distilled water or extract is added. ★ The electrode is calibrated and the solution to be measured is measured. ★ The measurement data is obtained.
Test Results:
★ chloride ion concentration Clˉ(mol?L-1)
★Temperature (°C)
★ Measurement range: 10-4 to 10-1 M.
★ Accuracy: ±10% (chloride ion), ±1°C (temperature).
★ Operating temperature: 0 °C ~ 40 °C.
Instrument specifications:
★ Host Size: 220*270*105(mm)
★Host weight: 2.5 kg
★ Host Dimensions: 485*370*210(mm)
★Mainboard weight: 7 kg
System Configuration:
★ Host ★ calibration solution, anti-ion interference agent, chemical reagents ★ United States imports of composite chloride ion selective electrode ★ power cord ★ PC analysis software
Executive standard:
★ "Concrete Test Procedure for Waterway Engineering" JTJ 270-98.
★ "Code for durability design of concrete structures" GB/T 50476-2008.
★ "Technical Specification for Sea Sand Concrete Application" JGJ206-2010.
★ "Testing procedures for hydraulic concrete" SL352-2006.
★ "Test method for homogeneity of concrete admixture" GB/T 8077-2000.
Product Usage:
Chloride ion is an important factor in inducing corrosion of steel bars. In order to avoid premature corrosion of steel bars, the control of chloride ion content in concrete raw materials is quite strict. China's relevant regulations clearly require that when concrete is used to mix concrete raw materials such as sand, aggregates, cement, admixtures, and mixing water, it is necessary to carry out the test of chloride ion content to fundamentally avoid the introduction of excess chloride ions into the concrete. The test of chloride ion content in structural concrete plays an important role in the evaluation of structural safety, and at the same time provides a reference value for the reconstruction and repair of old structures.
Manufactured according to the "Concrete Structure Durability Design Specification" GB/T 50476-2008, "Sea Sand Concrete Application Technical Specification" JGJ206-2010, "Water Transportation Engineering Concrete Test Regulations" JTJ 270-98 and other related standards, using ion selective electrode method ( Ion Selective Electrode, ISE method) Rapid determination of the water-soluble chloride ion content of inorganic materials such as concrete, gravel, cement, and mixing water at room temperature through the use of professional software and chemical anti-interference reagents to achieve prevention and control of concrete reinforcement The purpose of premature corrosion. The instrument is lightweight, compact body, easy to carry, suitable for on-site testing. Chloride concentration measurement range 10-4 ~ 10-1 M (mol? L-1).
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