Aerotest mek cure tester is a nondestructive inspection test designed to provide a fast and reliable method for testing in accordance with astm d5402 practice for assessing the solvent resistance of organic coatings using solvent rubs and astm d 4752 measuring mek resistance of ethyl silicate. Curing shall always be tested for resistance to mek, methyl ethyl ketone astm d 4752. This glue sticks immediately to the abraded surface. This test method is used to determine the degree of cure of a baked.
Astm d4752 standard test method for measuring mek resistance of ethyl silicate inorganic zincrich primers by solvent rub is similar to d. Cpd 202, changes to ctm 523 in accordance with astm. Curing begins immediately after placement and finishing so. As relative humidity and temperature vary, so does the rate of cure. This practice describes a solvent rub technique for assessing the mek resistance of ethyl silicate inorganic zincrich primers. Failure analysis and degree of cure failure analysis and degree of. Catastrophic failure of undercured zincrich primer topcoated with epoxy. This wet abrasion scrub tester is engineered in accordance with the test standard astm d 42 to evaluate the wet scrub resistance by abrasion weight loss. Pencil hardness was performed according to astm d 3363.
Standard practice for measuring mek resistance of ethyl silicate inorganic zincrich primers by solvent rub subscribe on standards with our subscription service. A certain minimum degree of cure is necessary prior to topcoating. I this test method is under the jurisdiction of astm committee doi on paint. There shall not be any segregation of zinc powder form the base material within 2 hrs in the mixed paint. Where water curing is inconvenient or potable water for curing is not available, sealing fresh concrete surfaces with curing compound is the best way of curing. D4752 98 standard test method for measuring mek resistance of ethyl silicate inorganic zincrich primers by solvent rub, curing characterist, double rub method, drying or curing, ethyl silicate inorganic primer, ketones, methyl ethyl ketone mek, primer, solvent rub method, visual examinationpaintsrelated coatingsmaterials, zincrich primer. Cylinder molds can be metal or plastic, so long as they are nonabsorbent, nonreactive to concrete, and maintain their shape and dimensions under all conditions. Technical data sheet application guide polymer group ltd. Astm d4752 mek test zinc test free download as pdf file. Measuring mek resistance of ethyl silicate inorganic zincrich primers by solvent rub1 this standard. The most commonly used test method is astm d 540206. Astm d4752 03 standard test method for measuring mek resistance of ethyl silicate inorganic zincrich primers by solvent rub astm d5402 062011 standard practice for assessing the. Jan 08, 2019 astm d4752 pdf astm d mek test zinc test free download as pdf file. The solvent rub test is usually performed using methyl ethyl ketone mek as the solvent.
Astm d4752 mek test zinc test nondestructive testing. Curing time to be verified by mek test astm d 4752 87 2. When you use our service you can be assured the latest editions and easy access. Astm c31c31m12 standard practice for making and curing concrete test specimens in the field.
The basis for the solvent resistance test method is the fact that as a coating crosslinks it becomes more insoluble. Astmd4752 standard practice for measuring mek resistance. The values were determined by averaging three data points tested on the same steel panels. Astm d540206 standard practice for assessing the solvent.
Astm d475203 measuring mek resistance of ethyl silicate. Code and standards requirements for acceptance testing. A good test to see if the curing compound has been removed is to place a few drops of water on the surface and see if the water is readily absorbed into the. San antonio water system standard specifications for construction. Test method d 4752 is the preferred method for ethyl silicate zincrich primers. Astm d4752 standard practice for measuring mek resistance. Subscription always available and updated a web subscription provides an easy and secure access to standards, and you are guaranteed to always have the latest edition.
Astm standards for readymixed concrete standards, 4th edition c 31 practice for making and curing concrete test specimens in the field c 33 specification for concrete aggregates c 39 test method for compressive strength of cylindrical concrete specimens. Put the glue on the dolly and hold the dolly onto the abraded surface for 10 15 seconds. Astm c31 aci making and curing concrete test specimens. The surface should be free of zinc salts and other contamination prior to application. Standard test method for wear preventive characteristics of. Astm d4752 pdf astm d mek test zinc test free download as pdf file. This test method is used to determine the degree of cure of a baked film by the paint film resistance to a specified solvent. Astm d 4752 standard test method for measuring mek resistance of. Water based products should be agitated or stirred before use to bring the solids back into suspension. Comparison of redoxpotentials of riboflavin and methylene blue. Last previous edition approved in 1998 as d 4752 98. Astm d4752 98 standard test method for measuring mek.
Gloss values were performed according to astm d 523. Scribd is the worlds largest social reading and publishing site. This technique can be used in the laboratory, in the field, or in the fabricating shop. Scope ness of protective coating system by destructive means4 d 4752 test method for measuring mek resistance of 1. The coated test panels air dried for 48 hrs shall pass the cure test when tested according to test procedure given in astm d 4752. If the ioz primer does not meet a rating of 4 or higher, reapply a fine mist of potable water until the coating is cured. Standard practice for assessing the solvent resistance of organic coatings using solvent. The revised ctm 523 adopts the fabrication and initial curing of specimen changes in accordance with astm c31c31m19, standard practice for making and curing concrete test specimens in the field, section 9, molding specimens, and section 10, curing. Curing is the maintaining of an adequate moisture content and temperature in concrete at early ages so that it can develop properties the mixture was designed to achieve. Please follow instructions given by the glue manufacturer. The concrete convention and exposition the concrete convention. Fast curing primer capable of application in a wide range of climatic conditions. Curing time to be verified by mek test astm d 4752 87 1.
Test method d 4752 is the preferred method for ethyl 3. Mek resistance of the coatings was conducted according to astm d 4752. Astm d475203 measuring mek resistance of ethyl silicate inorganic free download as pdf file. The type of cheesecloth, the stroke distance, the stroke rate, and approximate applied pressure of the rub are specified. D475220 standard practice for measuring mek resistance of ethyl silicate. Jan 09, 2019 astm d4752 pdf astm d mek test zinc test free download as pdf file. All bsi british standards available online in electronic and print formats. Test method c293c293m is not an alternative to test method c78c78m. The mek test measures curing in the surface of the primer. Curing time to be verified by mek test astm d 4752 87. This standard is issued under the fixed designation c 31c 31m.
Method of making and curing concrete test specimens in the field fop for aashto t 23 scope this procedure covers the method for making, initially curing, and transporting concrete test specimens in the field in accordance with aashto t 2308. Astm d 4541 standard test method for pulloff strength of coatings using portable adhesion tests. Astm d5402 pdf download the most commonly used test method is astm d. D 4752 98 standard test method for measuring mek resistance of ethyl silicate inorganic zincrich primers by solvent rub1 this standard is issued under the. Astm d4752 20 standard practice for measuring mek resistance of ethyl silicate inorganic zincrich primers by solvent rub. Before overcoating the esi must be visibly dry and tested for sufficient curing. It includes the key elements of surface preparation, coatings application, and final approval for both field and shop work. Guide specification for coatings with inorganic zinc rich primer section 1 definitions 1. Astm d4752 20 standard practice for measuring mek resistance. The euclid chemical company astm c 109c109m standard test method for compressive strength testing of hydraulic cement mortars using 2in. The first test, described in astm d4752, standard practice for measuring mek resistance of ethyl silicate inorganic zincrich primers by solvent rub, involves rubbing the surface of the primer back and forth double rub for fifty times with a. Results compatible with standard test results concrete with sca different expansion behavior different behavior than sra mixes. Warningfresh hydraulic cementitious mixtures are caustic and may cause chemical burns.
Astm d mek test zinc test free download as pdf file. The architectengineer is to refer to aci 308r, standard practice for curing concrete, aci 201. Practice d5402 is the preferred method for organic coatings. This technique can be used in the laboratory, in the. It has been shown that the degree of cure of ethyl silicate zincrich primers can be measured by the chemical changes occurring. If the ioz primer is mudcracked or otherwise discontinuous, repair the coating in accordance. Icd filmed footage of the inhouse mek rub test for solvent resistance andor testing of cure of coatings. The given data must be considered as guidelines only. Standard practice for assessing the solvent resistance of. My field expereince reveals that the coin test is the best, easiest,quickest most and reliable test to verify curing of spray applied ioz film. Recommended data given for recoating with coatings normally specified on top of zinc ethyl silicate coatings. The type of cheesecloth, the stroke distance, the stroke rate, and approximate applied pressure of the rub.
Also cyanoacrylate glue super glue can be used for adhesion testing. Evaluation for solvent resistance by solvent rub test astm d4752 and ncca 1118. Using solvent resistance to measure the cure of a coating system. Solvent sensitivity testing mekmethyl ethyl ketone test astm d 4752 inorganic zinc coating. Astmd5402 standard practice for assessing the solvent. Solvent resistance rub test astm d4752 evaluation for solvent resistance by solvent rub test astm d4752 and ncca 1118. The requirement to test for primer curing using astm d 4752 does not apply to organic zinc primer. Standard test method for rubber propertyvulcanization. Standard practice for measuring mek resistance of ethyl. Purchase your copy of astm d4752 20 as a pdf download or hard copy directly from the official bsi shop. It is recommended that prior to overcoating a solvent rub test to astm d4752 should be undertaken. Using this type of glue you may pulloff the dollies after only half an hour of curing.
The technique can be used in the laboratory, field, or in the fabricating shop. The most commonly used test method is astm d 540206, standard practice for assessing the solvent resistance of organic coatings using solvent rubs, method b coil coaters method. Astm d4752 involves rubbing the surface of a baked film with cheesecloth soaked with mek until failure or breakthrough of the film occurs. Pdf standard test method for measuring mek resistance of ethyl. At relative humidities below 55%, curing will be retarded. For an epoxy twopack glue the curing time at 20 o c is approximately 24 hours.
Note that in the 4th paragraph, line 2, they call it an estimation. Standard test method for measuring mek resistance of ethyl silicate inorganic. Standard test method for measuring mek resistance of ethyl. Astm c 309 and aashto m 148 curing compound classifications. Repair all runs, sags, and other defects in each coat before application of subsequent coats.
The crosscut tape adhesion test was performed according to astm d 3359. As soon as the transaction is completed, your astm standards subscription will be ready for access. Mek cure test general information solvent resistance rub test astm d4752 evaluation for solvent resistance by solvent rub test astm d4752 and ncca 1118. Ready for recoating if complete curing is achieved. D 4172 94 reapproved 1999 an american national standard standard test method for wear preventive characteristics of lubricating fluid fourball method1 this standard is issued under the. Astm c31 making and curing concrete test specimens in the field when strength is used as a basis for acceptance of concrete, specimens must be molded and cured according to astm c31. Astm d 3363 standard test method for film hardness by pencil test. This practice describes a solvent rub technique for assessing the solvent resistance of an organic coating that chemically changes during the curing process. Astm d4752 20 standard practice for measuring mek resistance of ethyl. The test result should as a minimum equal resistance rating 4. Standard test methods for drying, curing, or film formation. Below 75% relative humidity complete curing delays.
Access astm standards from any browser on your computer, tablet or smart phone. Aerotest mek cure tester is a nondestructive inspection test designed to provide a fast and reliable method for testing in accordance with astm d5402 practice for assessing the solvent resistance of organic coatings using solvent rubs and astm d 4752 measuring mek resistance of ethyl silicate inorganic zincrich primer by solvent rub. Resist 86 technical data sheet application guide jotun. Astm d4752 mek test zinc test nondestructive testing materials. A value of 4 indicates a satisfactory degree of cure for overcoating purposes. Pdf standard practice for making and curing concrete. Test the ioz primer for cure in accordance with astm d 4752. Astm c 31c 31m08b practice for making and curing concrete test specimens in the field pdf download. When applying this test method the scrub resistance of samples is measured by the weight loss of the coating or paint film relative to the calibration panel. Astm d4752102015 standard practice for measuring mek. D 1400 test method for nondestructive measurement of 5. The mek resistance of some twocomponent ethyl silicate zincrich primers has been shown to correlate well with the cure of the primer as determined by diffuse reflectance infrared spectroscopy. Standard test method for flexural strength of concrete. Technical data dimetcote 18 slurry industrial supplies.