If the 7. Apply the load depressions with a mortar composed of 1 part by weight of to the upper surface of the specimen through a steel bearing quick-hardening cement conforming to the requirements for. The of sand. Age the specimens at least 48 h before capping them.
Use a hardened metal bearing block beneath the speci- slab section or metal plate as a core fill. Cap the test specimens men to minimize wear of the lower platen of the machine. The using one of the two procedures described in 7. These surfaces of each specimen with shellac and allow to dry surfaces shall not depart from plane surfaces by more than thoroughly. Bed one of the dry shellacked surfaces of the 0.
When the bearing area of the spherical specimen in a thin coat of neat paste of calcined gypsum bearing block is not sufficient to cover the area of the specimen, plaster of paris that has been spread on an oiled nonabsorbent place a steel plate with surfaces machined to true planes within plate, such as glass or machined metal. The casting surface 6 0.
Lightly coat it with oil or other suitable material. Repeat this 7. Take care that the expected maximum load, at any convenient rate, after which, opposite bearing surfaces so formed will be approximately adjust the controls of the machine so that the remaining load is parallel and perpendicular to the vertical axis of the specimen applied at a uniform rate in not less than 1 nor more than 2 min.
Age the caps at least 24 h 7. The casting surface plate require- testing machine, and ments shall be as described in 7.
Place four 1-in. Heat the sulfur mixture in a example: clay floor tile , substitute for A in the above formula the net thermostatically controlled heating pot to a temperature suffi- area, in in. Take care to prevent 7. Fill strength determinations to the nearest 10 psi 0. Place the surface of the unit to be capped quickly in 8. Absorption the liquid, and hold the specimen so that its vertical axis is at 8. The thickness of the caps 8. Allow the unit to remain of not less than g, and shall be sensitive to 0.
Allow the caps to 8. Test conforming to the requirements of 7. Five specimens shall structural clay tile specimens in a position such that the load is be tested. Center the speci- 8. If small pieces are used, take two from the shell 7. The specimens shall have had their rough 7. The center of the sphere shall lie at the shall be free of cracks due to failure in compression. Remove the specimen, wipe off the surface mersion in boiling water. Complete 8. Freezing and Thawing 8.
Adequate cold-water submersion to the bath, and subject it to the boiling means shall be provided so that the water in the tank may be test as described in 8. Remove the specimen, wipe off the surface with approximately plane and parallel ends. If necessary, the water with a damp cloth, and weigh the specimen. Complete rough ends may be smoothed by trimming off a thin section weighing of each specimen within 5 min after removing the with a masonry saw.
The specimens shall be free from specimen from the bath. Test five specimens. Mark each crack its full length with an 8. Head face is defined as the end surfaces of a whole rectangular brick which have the smallest area. Pour sufficient water into the trays so that each. Following the 4 mm in length by 6 in.
Do not stack or pile ports consisting of bars between 5 and 6 in. Provide a space of at least 1 in. Suitable means for controlling the water level above the upper 9. For use in checking the adequacy has been completed. Stop the test if the test specimen develops of the method of controlling the rate of flow of the added water, a crack as defined in 9. Completely 9. NOTE 5—A suitable means for obtaining accuracy in control of the 9. Such precise 9. When the water level with respect to the upper surface or cracks developed during the freezing-thawing testing proce- edge of the bar is adjusted so that the lower point dimples the water dure.
Measure and record the length of the new cracks. Any freeze-thaw process. As an example of such other suitable means, there may be mentioned the use of rigid and thawing test under any one of three circumstances: supports movable with respect to the water level. The specification for the appropriate classification.
If none of the above circumstances occur, the specimens are Additional methods of test pertinent to ceramic glazes include imperviousness, chemical resistance, opacity, and resistance to crazing. The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard.
The values stated in either SI units or inch-pound units are to be regarded separately as standard. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. Note 1: The testing laboratory performing this test method should be evaluated in accordance with Practice C The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Please be aware that carriers will not deliver packages to Post Office Boxes. Because of the variability of customs processes and procedures in different countries, ASTM International cannot guarantee transit times to international destinations. Customs duty and taxes are the responsibility of the consignee. Shipping and Handling charges are approximate. Additional charges may be incurred if your order requires multiple shipments.
This does not apply to complete sets and sections. By purchasing a subscription and clicking through this agreement, you are entering into a contract, and acknowledge that you have read this License Agreement, that you understand it and agree to be bound by its terms.
All rights reserved. Authorized Users: any individual who has subscribed to this Product; if a Site License, also includes registered students, faculty or staff member, or employee of the Licensee, at the Single or Multiple Site.
Limited License. ASTM grants Licensee a limited, revocable, nonexclusive, non-transferable license to access, by means of one or more authorized IP addresses, and according to the terms of this Agreement, to make the uses permitted and described below, each ASTM Product to which Licensee has subscribed.
Neither the electronic file nor the single hard copy print may be reproduced in anyway. In addition, the electronic file may not be distributed elsewhere over computer networks or otherwise. That is, the electronic file cannot be emailed, downloaded to disk, copied to another hard drive or otherwise shared. The single hard copy print may only be distributed to others for their internal use within your organization; it may not be copied.
The individual Document downloaded may not otherwise be sold or resold, rented, leased, lent or sub-licensed. Any other use is prohibited, is a violation of this Agreement and can result in immediate termination of this License. Inclusion of print or electronic copies in coursepacks or electronic reserves, or for distance learning use, is not authorized by this License and is prohibited without ASTM's prior written permission.
0コメント