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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Combining values from the two systems may result in non-conformance with the standard. The right to access the electronic files of ASTM Standards is for purposes of viewing for individual use only. Register for a trial account. The electronic file may not be reproduced in any way.
Time of set is defined as the point in time at which penetration resistance reaches specified values. ASTM grants you a license as follows: ASTM C identifies initial and final time of set as:. Enter your account email address to request a password reset: Initial and final set times are important because they give an indication of when the concrete can be properly placed, consolidated and finished.
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. Print 1 2 3 4 5 page sstarting from page current page.
However, replacement rates of less than 30 percent generally will not affect times of set significantly. Link to Active This link will always route to the current Active version of the standard.
Among other things, the initial and final time of set are influenced by: Please sign into an account with a subscription to this content, or email for help at support madcad. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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. Penetration resistance Initial Time of 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 of an individual with minimal indentation. Content only available by subscription.
This test method may also be used to determine compliance with specified time-of-setting requirements. In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise. 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. However, when the setting 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.
Enter your personal account email address to request a password reset: Join us on Facebook. Sign up for our newsletter. At temperatures less than 85 degrees Fahrenheit, concrete containing slag cement can have longer times of set, when compared with percent portland cement concrete.
ASTM C403/C403M – 16
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
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Remember me for one month. No items in cart. Slower times of set are beneficial in hot weather because the contractor has a longer time to deliver, place, and finish the concrete.
ASTM C Standard
If you like awtm setup a quick demo, let us know at support madcad. When water comes into contact with hydraulic cement, a chemical reaction called hydration occurs.
The percentage of slag cement used can also affect times of set. ASTM C identifies initial and final time of set as: Follow us on Twitter. Why is Time of Set Significant?
ASTM C – National Precast Concrete Association
Search book aatm Enter keywords for book title search. If times of set need to be reduced, accelerators, heated materials or reduced atsm cement content may be used Figure 2. There were no books found for the applied search filters. Please login to your authorized staff account to use this feature. 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.
You currently cannot view this content. 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? Historical Version s – view previous versions of standard.
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