To prevent heterogeneity, the specimens were vacuumsaturated prior to testing, as described in the astm c1202. Rapid chloride permeability test on selfcompacting high performance green concrete m. In the test, the rpr antigen is mixed with unheated or heated serum or with unheated plasma on a plasticcoated card. This test method was originally developed by the portland cement association, under a research program paid for by the federal highway administration fhwa. The original test method may be found in fhward81119, rapid determination of the chloride. How to test smtp settings using telnet helo, mail, mail.
Rapid chloride permeability test is also popularly known as coulomb test. In most cases the electrical conductance results have shown good correlation with chloride ponding tests, such as aashto t259, on companion slabs cast from the same concrete mixtures refs 15. Understanding aashto t277 and astm c1202 rapid chloride. In this paper, an attempt is made to study the properties of fly ash concrete. Standardized testing procedures are in aashto t 277 or astm c 1202. Improving the reliability of resistivity tests of concrete. No matter, slump test is a leader among the above tests. Chloride diffusivity in terms of total charge passed of bacteria incorporated concrete specimen using rapid chloride penetration test rcpt as per astm c 1202 is also investigated. However, this test could be used as a prequalification test in lieu of specifying low wcm ratio. Testing chloride penetration resistance of concrete. Cement fineness test procedure by sieving 90 micron as per is 4031, quality control test for cement duration. Caltech engineering services offers rapid chloride permeability test apparatus.
In general, the older the specimen, the lower the coulombs, assuming that the sample has been cured properly. Qaqc testing for concrete in harsh environments paper for. We usually perform slump test on site and lab due its ease and results. We have found that the age and curing of the test specimen affects the results dramatically. A modified rapid chloride permeability test rcpt method. The equation was developed with data for watertocement ratios ranging from 0. The original correlation established using the aashto 90day saltponding test, for ranking concretes in terms of their chloride ion penetrability using the rcpt results has various limitations. Evaluation of test methods for permeability transport. The rcpt specimens 50mm thick slice were obtained by sawing the midportion of the cylindrical specimens. Rapid chloride permeability test can be used for a wide range of applications and quality control purpose. The mix design was carried out for m25 and m40 grade concrete as per is. Add enough hot water so as to make a volume of 150 ml, stir until dissolution is complete. Baseline references on the spt procedure many of the spt correlations have been explored, and there exist no small number of problems, requiring considerable judgment.
Concrete slump test is carried out from batch to batch to check the uniform quality of concrete during construction. The rapid chloride permeability test meets these goals. Rapid chloride permeability test equipment rcpt has multiport testing facilities is designed to test concrete samples of 100mm diameter with 50mm thickness for concrete ion permeability test for civil engineering departments and reasearch centres. The rapid chloride permeability test rcpt, as it is commonly called, has been in existence for over 20 years and was standardized by astm over 15 years ago. The continuous performance test cpt has been widely used to assess deficits in attentional function in many neurodegenerative and neuropsychiatric disorders including alzheimers disease perry and hodges 1999. For each test, the procedure, the theoretical basis, and any advantages. Astm c 17605 measures the bulk electrical conductivity of hardened concrete. The rcpt standards specify the rating of chloride permeability of concrete based on the charge passing through the specimen during a 6h test.
Rpr antigen is mixed with unheated or heated to inactivate complement serum or with unheated plasma on a plasticcoated card. As discussed on page 88, electrical conductivity is related to the diffusion coefficient. Pdf an experiment on durability test rcpt of concrete. An experiment on durability test rcpt of concrete according to astm standard method using lowcost equipments article pdf available june. Research has also indicated that the presence in the concrete of. Rcpt is commonly referred as the rapid chloride permeability test. The rapid chloride permeability test rcpt, designated as astm c1202, is used for rapid qualitative assessment of the chloride permeability of concrete. Creactive protein crp test principle, uses, procedure and result interpretation. Filter and wash with water if, there is insoluble matter. 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 xcel format can be studied and further worked with. Develop test procedures directly evaluates the transport properties of concrete and relates these to anticipated performance with the use of exposure conditions evaluate existing transport test procedures develop new, or improve test procedures correlate transport properties and existing durability tests.
Rapid chloride permeability test according to astm c1202 test, a watersaturated, 50 mm thick, 100 mm thick diameter concrete specimen is subjected to a 60 v applied dc voltage for 6 hours using the apparatus and the cell arrangement is shown in figure1. Creactive protein crp test uses, procedure and result. Standard test method for electrical indication of concrete. Esmtp server closing connection youve just sent an anonymous email using open relay. Rapid chloride permeability tester rcpt test apparatus. Crp is an acute phase reactant, a protein made by the liver and released into the blood within a few hours after tissue injury, the start of. Using rcpt determine the migration coefficient to assess. It gives quick result about the workability of concrete. The rcpt test, astm c1202, requires test specimens to be vacuum saturated after a water curing period that can be accelerated by immersion in water at a higher temperature. I created this procedure as a part of my email testing package. The rapid chlorideion permeability test rcpt is conducted to know to assess the resistance of concrete to the penetration of chloride ions, an indicator of its permeability. One cable reference method has highest loss includes fut but also.
The rpr test measures igm and igg antibodies to lipoidal material released from damaged host cells as well as to lipoproteinlike material, and. Concretes incorporating fly ash or silica fume are less permeable to deleterious elements and thus are more durable than conventional concretes. This is especially so for concretes incorporating chemical and mineral admixtures. Rapid chloride penetration test aashto t277, astm c. The rcpt task was designed to test attention with brief presentations of individual visual stimuli on the screen over a lengthy, sequential series of trials. Summary of test principle and clinical relevance the rapid plasma reagin rpr 18mm circle card test is a macroscopic, nontreponemal flocculation card test used to screen for syphilis 14. In this case we have not included any header information or subject line in the message, so it is not very useful, but it is small. Two electrolytefilled chambers are attached to either side of a 51mm thick 3 95mm diameter cylinder of concrete. In its simplest form a single string or variable can be sent as the message body using the following procedure. Add enough hot water so as to make a volume of 150 ml, stir until the dissolution is complete. If there is insoluble matter, filter and wash with water. Performance evaluation of rapid chloride permeability test.
The test kits can be purchased from many commercial sources. Durability means the resistance to physical or chemical deterioration of concrete resulting from interaction with environment physical deterioration or interaction between constituents chemical deterioration of concrete. The programmed unit shuts the test off once the user specified period factory setting 6 hrs. Permeability of concrete tests on concrete by rcpt, salt.
The antigen is prepared from a modified venereal disease research. Rapid chloride permeability test for durability studies on glass fibre reinforced concrete chandramouli k. An experiment on durability test rcpt of concrete according to astm standard method using lowcost equipments. Evaluation of sorptivity and water absorption of concrete. This test should measure the rate of absorption of water by capillary suction, sorptivity of unsaturated concrete. How much does the loss of a cable plant change with the different methods. The development of a rapid test for determining the. This paper discusses the results and interpretation of such electrical test methods for aac and investigates modi. For a userspecified concrete mixture, an estimate of the concrete\s formation factor is obtained from an equation developed previously. Rapid chloride permeability test on selfcompacting high.
A guide to pat testing 3 n exposure to live, conductive parts due to damage to the outer casing of the equipment. Rapid chloride permeability test for durability studies on. First, the existing longterm procedures are discussed, namely the salt ponding aashto t259 test and the nordtest ntbuild 443 bulk diffusion test. This test method is applicable to types of concrete where correlations have been established between this test procedure and longterm chloride ponding procedures such as. In section 4, individual test procedures are presented. The test is used extensively in the concrete industry for assessing concrete quality and is now being included in concrete speci. Reevaluation of the aashto t259 90day salt ponding test. Many researchers have questioned the applicability of rcpt in mixes having supplementary cementitious materials scms. There is considerable difference in how concrete test specimens are conditioned for these tests.
There are many factors that may affect the accuracy of the test procedure. However, this test is time consuming and is highly dependant. If antibodies are present, they combine with the lipid particles of the antigen, causing them to agglutinate. This test is made possible by an equipment which is known as rapid chloride permeability test equipment, the test equipment consists of two reservoirs. The purpose of this form is to estimate the results of a rapid chloride permeability test astm c1202 for a concrete mixture. The electric charge passed, q in coulombs, obtained from rapid chloride ion penetrability test was used to calculate chloride migration diffusion coefficient in steady state conditions from berkes empirical equation. Concrete slump test for workability procedure and results. Concrete slump test procedure applications, types, uses. Rapid chloride penetration test rcpt in the rcpt, the specimens were placed between two acrylic cells.
The rcpt method is very sensitive to specimen handling and until there is more experience with specimen preparation and care for initial curing in the field, its use as a jobsite acceptance test is not recommended. Concrete slump test or slump cone test is to determine the workability or consistency of concrete mix prepared at the laboratory or the construction site during the progress of the work. Most of these problems are discussed in the following articles. The astm c 1202 standard test method for electrical indication of concretes ability to resist chloride ion penetration, more commonly known as the rapid chloride permeability test rcpt, is widely specified as a quality control method in concrete construction. The rapid chlorideion permeability test rcpt was designed to assess the resistance of concrete to the penetration of chloride ions, an indicator of its permeability. Average per test method shows what different test crews would find results. Astm c1202rcpt test astm c1202 standard test method for electrical indication of concretes ability to resist chloride ion penetration is actually a test of electrical conductance, rather chloride permeability as is often stated.
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