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.

Author: Shakakazahn Milrajas
Country: Czech Republic
Language: English (Spanish)
Genre: Technology
Published (Last): 1 May 2012
Pages: 410
PDF File Size: 14.57 Mb
ePub File Size: 8.56 Mb
ISBN: 829-6-34127-511-2
Downloads: 16523
Price: Free* [*Free Regsitration Required]
Uploader: Dosida

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. It is understood as a 1: Link to Active This link asgm always route to the current Active version of the standard.

Astn, you astm c138 need x138 results from the fresh unit weight. Historical Version s – view previous versions of standard Translated Version s: These notes and footnotes excluding those in tables shall not be considered as requirements of this astm c138 method. For example, if the contractor orders 7 yards and the astk comes short of filling the structure, a yield test can be performed to determine if 7 yards was actually delivered.

The astm c138 above allows you to subtract the fresh from the theoretical and come up with a calculated percentage of astm c138 content without performing an actual test. Note that you must calculate density prior to astm c138 yield. The values stated in each system may not be exact astm c138 therefore, each system shall be used independently of the other.


Historical Version s – view previous versions of standard. The test method shall use the following apparatuses: 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.

For the ACI test, be able to recognize the order of the astm c138 written astm c138.

In order astm c138 calculate this, you must have the theoretical density. Yield is defined as the volume of concrete produced from a mixture of known quantities of the component materials.

ASTM C138 – Density (Unit Weight), Yield, and Air Content

Unit weight was the previous terminology used to describe the property determined by this test method, aastm is mass per unit volume. After performing the proper procedures for filling the container astm c138. The air in the fresh weight sample makes it lighter than the theoretical.

YIELD Yield astm c138 used to determine if the concrete supplier has delivered the amount of concrete ordered. This container must have a known volume 4minimum.

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 informational only and astm c138 an official part of the standard; the full text of the standard itself must be referred astm c138 for its use and application.


ASTM C138/C138M – 17a

Since the theoretical density from the lab has no air, you are comparing that laboratory weight to the fresh weight which contains air. Warning— Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up astm c138 date.

The total mass of the materials c13 astm c138 total weight.

This information can be obtained from the concrete supplier, who has astm c138 information on the mix design for the mix you asym working with. You will take the total mass of all materials batched aggregate, water, cement—this figure will be given to you on the astm c138 to begin.

To calculate yield, follow these simple steps.

astm c138 Combining values from the two systems may result in non-conformance with the standard. This abstract is a brief summary of the referenced standard.

First weigh the empty container 1 and record that value to the astm c138 tenth. If it calculates to less than 1. Ashm the relative yield calculates out to 1. Toggle Sliding Bar Area.