C42 / C42Ma Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Standard + Redline PDF Bundle, 14, $, ADD TO CART. 1 This test method is under the jurisdiction of ASTM Committee C09 on. Concrete .. Drilled Cores in Accordance with ASTM C42,” ASTM Journal of Cement. ASTM CC42M - 04 - Free download as PDF File .pdf), Text File .txt) or read online for free.
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ASTM C - Download as PDF File .pdf), Text File .txt) or read online. This standard is issued under the ﬁxed designation C42/C42M; the number. ) and ASTM C42 (Ref. ) formed the basis the user to monitor and adjust the load rate to satisfy ASTM C39 (Ref. ) requirements. Home; ASTM C42/C42Ma. $; Add to Cart. Printed Edition + PDF;; Immediate download; $; Add to Cart.
This may optionally be followed by a dash and the last two digits of the year in which the standard was adopted. Two concrete test machine s are available for use in FSEL.
Revised: Septem C. Roberts Procedure Checklist. Uploaded by. ASTM C. ASTM C This document comes with our free Notification Service, good for the life of the document. This document is available in either Paper or PDF format.
Document Number. Revision Level.
Modification Type. Test Property. Compressive strength.
Description of Test. Typically water cooled coring devices or saws are used to obtain samples from the site. Performance specifications for products are frequently based on the ASTM standards used in building codes. BuildSite indexes products by these standards. See Figure 2. See also Chapter 13, Section Once you find out the same.
Use Compressive strength of concrete is used as a structural design criterion and as a general indicator of concrete quality. If wood forms are used the plastic can be stapled along the outside edge of the forms These factors shall be considered in planning the locations for obtaining concrete samples and in comparing strength test results.
There is no standard procedure to condition a specimen that will ensure that, at the time of test, it will be in the identical moisture condition as concrete in the structure.
Current edition approved Feb. Published March Originally approved in DOI: Neville, A. For a given concrete, however, there is no unique relationship between the strengths of these two types of specimens see Note 2.
The relationship is affected by many factors such as the strength level of the concrete, the in-place temperature and moisture histories, the degree of consolidation, batch-to-batch variabil- ity, the strength-gain characteristics of the concrete, the con- dition of the coring apparatus, and the care used in removing cores. NOTE 2A procedure is available for estimating the equivalent cylin- der strength from a measured core strength.
An example of acceptance criteria for core strength is provided in ACI , 5 evaluate cores taken to investigate low strength test results of standard- cured cylinder during construction. Apparatus 4.
ASTM C42M-16 Standard Test Method for Obtaining and Testing
The saw shall have a diamond or silicon-carbide cutting edge and shall be capable of cutting cores without introducing cracks or dislodging aggre- gate particles. Sampling 5. When preparing strength test specimens from samples of hardened concrete, samples that have been damaged during removal shall not be used unless the damaged portion s are removed and the lengths of resulting test specimens satisfy the minimum length-diameter ratio requirement in 7.
Samples of defective or damaged concrete that cannot be tested shall be reported along with the reason that prohibits use of the sample for preparing strength test specimens.
NOTE 6It is not possible to specify a minimum age when concrete is strong enough to withstand damage during removal, because the strength at any age depends on the curing history and strength grade of the concrete.In addition, smaller diameter cores appear to be more sensitive to the effect of the length-diameter ratio.
Performance specifications for products are frequently based on the ASTM standards used in building codes. After completing end preparation, wipe off surface moisture, allow the surfaces to dry, and place the cores in sealed plastic bags or nonabsorbent containers.
When the line of contact is not straight or contains projections or depressions having heights or depths greater than 0. Approved February 1, 1 Deleted 2. These factors shall be considered in planning the locations for obtaining concrete samples and in comparing strength test results.
Other Browser: Different size probes or a change in driving force may be necessary for large differences in strength or unit weight; b. Once you find out the same.
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