ASTM C1202 PDF
ASTM C Rapid Chloride Permeability Test. T E C H N I C A L. B U L L E T I N T B – 0 1 0 0. Concrete. Introduction. This test method was originally developed. This test method (ASTM C ) covers the determination of the electrical conductance of concrete to provide a rapid indication of its resistance to the. This standard is issued under the fixed designation C; the number immediately 1 This test method is under the jurisdiction of ASTM Committee C09 on.
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The negative terminal of the potential source is connected to the electrode in the the NaCl solution and the positive terminal is connected to the electrode in the NaOH asmt. Acceptance criteria for this test should consider the sources of variability affecting the results and ensure balanced risk between supplier and purchaser. Two types of cells are available, the PR cell and the PR cell, shown below.
The average chloride penetration, the applied voltage, average temperature of the sodium hydroxide solution, test duration, and specimen thickness are used to calculate the non-steady-state migration coefficient. Most concretes, if properly cured, become progressively and significantly less permeable with time.
Asmt, cells with cooling fins Part No. As discussed on page 88, electrical conductivity is related to the diffusion coefficient. For the ASTM C tests, the current at 5 minutes was measured and used to calculate the electrical conductivity. As was discussed on page 88, there is a theoretical relationship between the chloride diffusion coefficient and electrical axtm.
Link to Active This link will always route to the current Active version of the standard. The PR Verification Unit The PR verification unit is used to verify that the microprocessor controlled power supply is working properly. The voltage is set to 60 V and the cells are turned on.
It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. The cells are supplied with PRB gaskets, unless otherwise specified. An electrical potential of 60 VDC is applied across the cell.
Work Item s – proposed revisions of this standard. The cells are turned off. The negatively charged ions will migrate towards the positive terminal resulting in current through the specimen.
Special couplers are provided to accommodate specimens that are shorter than mm. Powered by WordPress Theme Designed by: Cell temperature must be measured during the test. The window shows the details of the test. After the test is completed, the specimen is split, and the chloride ion penetration is measured by spraying the split surface with a 0. Other specimen diameters may wstm tested with appropriate changes in the applied voltage cell design see 7.
A separate program is used c202 this test.
As was discussed on page 90, different ranges of bulk electrical conductivity correspond to different ranges of charge passed in accordance with ASTM C Specimens from 5 concrete mixtures were subjected to 59 days of standard curing and then subjected to 16 months of immersion in the NaCl solution.
A higher voltage and longer test duration are required for higher quality concrete mixtures.
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This includes specimens with actual diameters ranging from 95 to mm. The current is measured. One approach to establishing criteria is discussed in Ref 6. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
The PR is supplied with cooling fins, which are needed if the temperature is required to be kept constant, as for example, for chloride ion migration testing using the NT Build test method. A 30 VDC potential is applied across the specimen, and the initial current is measured.
By measuring the current passing through a saturated concrete specimen and determining the bulk conductivity in accordance with ASTM C