GeoTesting Express is a provider of Aggregate Testing Services – ASTM C, Standard Test Method for Total Evaporable Moisture Content of Aggregate by. ASTM C Standard Test Method for Total Evaporable Moisture Content of Aggregate by Drying. This standard is issued under the fixed designation C ; the number 1 This test method is under the jurisdiction of ASTM Committee C-9 on Concrete.
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You currently cannot view this content. To maintain a constant flow of material over the moisture probe, it can be positioned under the aggregate dosing gate. For specific precautionary statements, see 5. Some aggregate may contain water that is chemically combined with the minerals in the aggregate. This information is then fed directly into the automated mixing water batch controller of the plant. No other units of measurement are included in this standard.
There v566 several types of probes on the market today. These technologies allow automatic moisture evaluations of materials.
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. Please first verify your email before subscribing to alerts.
Controlling Moisture to Ensure Quality
Automated input allows the plant to make fine adjustments to mix proportions and leads to a much narrower set of final batched concrete tolerances. The subsection goes on to state that when aggregate bins are fitted with moisture probes or meters, aggregate surface moisture content shall be determined a minimum of once per week in order to validate probe calibration.
Some aggregate may contain water that is chemically combined with the minerals in the aggregate. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
This standard is also available to be included in Standards Subscriptions. However, with either choice, accurate accounting of moisture in aggregates is essential to keep your mix on target and within specified limits. Approximate relationship between compressive strength and water-cementitious materials ratio for concrete. For additional information on moisture probes, please contact the NPCA technical services department at No items in cart.
Add to Alert PDF. Probes do not eliminate the need to perform manual tests for verification of aggregate moisture. Moisture probes can be inspected for damage and buildup when positioned in the floor of a countercurrent planetary mixer.
However, this measurement method is not always accurate since it depends on the impurities, or minerals, present in the water. It will generally measure the moisture in the test sample more reliably than the sample can be made to represent the aggregate supply.
ASTM C – 13 Standard Test Method for Total Evaporable Moisture Content of Aggregate by Drying
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Enter your personal account email address to request a password reset: Discovering the detrimental effects can be easily seen in a small-scale experiment using compressive-strength cylinders asgm a common mix design. Lastly, radar-type probes consist of guided radar waves to facilitate measurements. Remember me for one month. Such water is not evaporable and is not included in the percentage determined by this test method. For Astmm processes made without moisture probes or meters sstm automatic mixing water adjustment systems, the aggregate surface moisture content must be determined at least once per day prior to the batch and once every four hours after the first batch.
Such water is not evaporable and is not included in the percentage determined by this test method. No further reproductions authorized.
Standards Subsctiption may be the perfect solution. Search book title Enter keywords for book title search. ASTM C uses the sampled aggregate mass against the same sample following drying. In cases where the aggregate itself is altered by heat, or where more refined measurement is required, the test should be conducted using a ventilated, controlled temperature oven. The alternative designation given in parentheses is for information only and does not represent a different standard sieve size.
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For specific precautionary statements, see 5.
The use of moisture probes for determining aggregate moisture has been widely used as an accepted practice in precast plants across the country for more than 25 years. Register for a trial account. The user of this test method should determine by trial if rapid drying methods provide sufficient accuracy for the intended use when drying large size particles.