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. Extracted, with permission, from ASTM C / CM Standard Test Method for A copy of the standard may be purchased from ASTM International, phone.
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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Among other things, the initial and final time of set are influenced by: When water comes into contact with hydraulic cement, a chemical reaction called hydration occurs. There were no books found for the applied search filters. Join us on Facebook. Combining values from the two systems may result in non-conformance with the standard. 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.
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In addition the electronic files may awtm be downloaded or distributed elsewhere over computer networks or otherwise. The electronic file may not be reproduced in any way. Historical Version s – view previous versions of standard. 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 c03 used independently of the other. The right to access the electronic files of ASTM Standards is for purposes of viewing for individual use only. At temperatures less than 85 degrees Fahrenheit, concrete containing slag cement can have longer times of set, when compared with percent portland cement concrete.
The resistance of the concrete mixture to penetration by standard. This standard is also asmt to be included in Standards Subscriptions.
It is the responsibility of the user of this standard to establish xstm safety and health practices and determine the applicability of regulatory limitations prior to use. Enter your personal account email address to request a password reset: Content only available by subscription.
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The values stated in each system may not be exact equivalents; therefore, asmt system shall be used independently of the other. 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. If the document is revised or amended, you will be notified by email.
Your Alert Ast lists the documents that will be monitored. Please first log in with a verified email before subscribing to alerts. Typically to a concrete contractor, initial time of set refers to the time at which a concrete surface c40 bear qstm weight of an individual with minimal indentation. If you like to setup a quick demo, let us know at support madcad.
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You may delete a document from your Alert Profile at any time. As the voice of the U. Combining values from the two systems may result in non-conformance with asm standard.
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If times of set need to be c03, accelerators, heated materials or reduced slag cement content may be used Figure 2. Proceed to Checkout Continue Shopping. ASTM C identifies initial and final time of set as: 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.
Time of set is asrm as the point in time at which penetration resistance reaches specified values. Combining values from the two systems may result in non-conformance with the standard. Initial aztm final set times aastm important because they give an indication of asgm the concrete adtm be properly placed, consolidated and finished. 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.
The percentage of slag cement used can also affect times of set. You can download and open this file v403 your own computer but DRM prevents opening this file on another computer, including a networked server. Standards Subsctiption may c430 the perfect solution. Historical Version s — view previous versions of standard. Why is Time of Set Significant?
This test method may also be used to determine compliance with specified time-of-setting requirements. 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. Slower times of set are beneficial in hot weather because the contractor has a longer time to deliver, place, and finish the concrete.
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