27 Oct ASTM C Density (Unit Weight), Yield and. Air Content (Gravimetric) of Concrete. P F N/A. Item. 1. Dampen the interior of the measure and. Learn concrete astm c with free interactive flashcards. Choose from 71 different sets of concrete astm c flashcards on Quizlet. Start studying ACI ASTM C Learn vocabulary, terms, and more with flashcards, games, and other study tools.
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ASTM C Standard
To calculate yield, follow these simple steps. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. For example, if the contractor orders 7 yards and the pour comes short of filling asgm structure, a yield test can be performed to determine if 7 yards was actually delivered.
ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. This container must have a known volume 4minimum.
ASTM C138 – Density (Unit Weight), Yield, and Air Content
Since the theoretical density from the lab has no air, you are comparing that laboratory weight to the fresh weight which contains air. It is understood as a 1: After performing the proper procedures for filling the container i. Historical Version s – view previous versions of standard Translated Version s: For the ACI test, be able to recognize the order of the formula written above.
First weigh the empty container 1 and record that value to the nearest tenth. Note that aastm must calculate density prior to calculating yield. You will take the total mass of all materials batched aggregate, water, cement—this figure will be given to you on the test to begin. Referenced Aetm purchase separately The documents listed below are referenced asym the subject standard but are not provided as part of the standard.
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. If it calculates to less than 1. YIELD Yield is used to determine if the concrete supplier has delivered the amount of concrete ordered. The total mass of the materials is the total weight.
This information can be obtained from the concrete supplier, who has this information on the mix design for the mix you are working with. Yield is defined as the volume of concrete produced from a mixture of known quantities of the component materials. If the relative yield calculates out to 1. 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.
Again, you will need your results from the asmt unit weight. Combining values from the two systems may result in non-conformance with the standard. The test method shall use the following apparatuses: These notes and footnotes excluding those asym tables shall not be considered as requirements of this test method.
In order to calculate this, you must have the theoretical density. The air in the fresh asym sample makes it lighter than the theoretical. Toggle Sliding Bar Area.
Link to Active This link will always route to the current Active version of the standard. The formula above allows you to subtract the fresh from the theoretical and come up with a calculated percentage of air content without performing an actual test. Historical Version s – view previous ast, of standard.
Atsm weight was the previous terminology used to describe the property determined by this test method, which is mass per unit volume. Warning— Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. This abstract is a brief summary of asstm referenced standard.
This test method covers determination of the density of freshly mixed concrete and gives formulas for calculating the unit weight, yield or relative yield, cement content, and air content of the concrete.