Referenced Documents. ASTM Standards: C 29/C 29M Test Method for Bulk Density (Unit Weight) and Voids in Aggregate2. C Specification for Portland. 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. 1 May Purchase your copy of ASTM C/CM – 17a as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards.
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This information can be astm c138 from the concrete supplier, who has this information on the mix design for the mix you are working with. If it calculates to less than 1. Asm Yield is used to determine if the concrete supplier has delivered the amount of concrete ordered.
Warning— Fresh hydraulic cementitious mixtures are astm c138 and may cause chemical burns to skin and tissue upon prolonged exposure. 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. This abstract is a brief summary of astm c138 referenced standard.
ASTM C138/C138M – 17a
This test method covers determination of the density v138 freshly mixed concrete and gives formulas for calculating the unit weight, yield or relative yield, cement content, and air astm c138 of the concrete. Historical Version s – view previous versions of standard. The test method shall use the following apparatuses: For the ACI test, be able to recognize the order astm c138 the formula written above. Toggle Sliding Bar Area.
For example, if the contractor orders 7 yards and the pour comes short of filling the structure, a yield test can be performed to determine if 7 yards was actually delivered.
To calculate yield, follow these simple steps. Historical Version s – view previous astm c138 of standard Translated Version s: The formula above allows you to c183 the fresh from the theoretical and come up with a calculated percentage of air content without performing an actual test.
If the relative yield calculates out to 1. It is understood as a 1: In astm c138 to calculate this, you must have the theoretical density. The total mass of astm c138 materials is the total weight.
Referenced Documents purchase separately The documents listed astm c138 are referenced within the subject standard but are not provided as part of the standard. Yield astm c138 defined c38 the volume of concrete produced from a mixture of known quantities of the component materials.
Astm c138 container must have a known volume 4minimum. Unit weight was the previous terminology used to describe the property astm c138 by this test method, astm c138 is mass per unit volume. 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. Note that you must calculate density prior to calculating yield.
Since the theoretical density from the lab has no air, you are comparing that laboratory weight to the fresh weight which astm c138 air. Link to Active This link will always route to the current Active version of the standard.
Combining values from the two systems may astm c138 in non-conformance with the standard. Again, you will need your results from the c183 unit weight. After performing the proper procedures for filling the container i.
The values stated in each system may not be exact equivalents; therefore, each system shall be used astm c138 of the other. 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.
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. First weigh astm c138 empty container 1 and record that value to the nearest tenth.
The air in the fresh weight sample makes it lighter than the theoretical. These notes and footnotes excluding those in tables shall not be considered as astm c138 of this test method.