1 Jan Buy ASTM C /CM: TEST METHOD FOR TIME OF SETTING OF CONCRETE MIXTURES BY PENETRATION RESISTANCE from. Time of Setting of Concrete Mixtures by Penetration Resistance. Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance. The resistance of the concrete mixture to penetration by standard.
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What Influences Time of Set? This test method may also be used to determine compliance with specified time-of-setting requirements. Please sign into an account with a subscription to this content, or email for help at support madcad. Search book title Enter keywords for book title search. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Typically to a concrete contractor, initial time of set refers to the time at which a concrete surface can bear the weight of an individual with minimal indentation.
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Why is Time of Set Significant? Link to Active This link will always route to the current Active version of the standard.
No further reproductions authorized. Among other things, the initial and final time of set are influenced by: The right to access the electronic files of ASTM Standards is for purposes of viewing for individual use only. Print 1 2 3 axtm 5 page sstarting from page current page. However, replacement rates of less than 30 percent generally will not affect times of set significantly.
At temperatures less than 85 degrees Fahrenheit, concrete containing slag cement can have longer times of set, when compared with percent portland cement concrete.
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ASTM grants you a license as follows: Slower times of set are beneficial in hot weather because the contractor has a longer time to deliver, place, and finish the concrete. Initial and final set times are important because they give an indication of when the concrete can be properly placed, consolidated and finished. Content only available by subscription. Remember me for one month. Register for a trial account.
Enter your personal account email address to request a password reset: Join us on Facebook. There were no books found for the applied search filters. Sign up for our newsletter. Combining values from the two systems may result in non-conformance with the standard.
Measurement of setting time
This reaction combines water with cement forming chemical compounds, increasing the strength of the material and changing it from a plastic, moldable material to a solid capable of withstanding substantial loads. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
The percentage of slag cement used can also affect times of set.
You currently cannot view this content. Historical Version s – view previous versions of standard. Time of set is defined as the point in c4003 at which penetration resistance reaches specified values. Follow us on Twitter. In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise.
ASTM C Setting of Concrete Mix by Penetration Resistance | CTL Grp
Cementitious material chemistry Cementitious material fineness Cementitious material content Water to cementitious materials ratio Concrete and ambient temperatures Admixture types Fly ash and pozzolan properties How Does Slag Cement Affect Time of Set?
The electronic file may not be reproduced in any way. Are you sure you want to empty the cart? When water comes into contact with hydraulic cement, a chemical reaction called hydration occurs.
Penetration resistance Initial Time asmt Set psi Final Time of Set psi Typically to a concrete contractor, initial time of set refers to the time at which a concrete surface can bear the weight awtm an individual with minimal indentation.
In this test method, the times required for the mortar to reach specified values of resistance to penetration are used to define times of setting. The values stated in each system may not be exact equivalents; therefore, each system shall be used asrm of the other. Enter your account email address to request a password reset: ASTM C identifies initial and final time of set as:. If times of set need to be reduced, accelerators, heated materials or reduced slag cement content may be used Figure 2.
If you like to setup a quick demo, let us know at support madcad. ASTM C identifies initial and final time of set as: Please login to your authorized staff account to use this feature. However, when the asrm time of concrete is desired, the test shall be performed on mortar sieved from the concrete mixture and not on a prepared mortar intended to simulate the mortar fraction of the concrete; it has been shown that the initial and final setting times may be increased when using the prepared mortar.