ASTM C Related Standards: ASTM C, C, C, D75, D, E Potential Alkali Reactivity of Carbonate Rocks as Concrete Aggregates. GeoTesting Express is a provider of Aggregate Testing Services – ASTM C, Standard Test Method for Potential Alkali Reactivity of Carbonate Rocks for. 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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ASTM C Standard
As the significance of the mortar bar test results depend upon the conditions tested, it is relevant to employ the cement type and aggregate proposed for actual use. Alkali-reactivity can be detected in concrete, but the assessment of the importance and state of progress is almost impossible. Test method Subject Areas: As the voice of the U. The test method has been successfully used in 1 research and 2 preliminary screening of aggregate sources to indicate the presence of material with a potential for deleterious expansion when used in concrete.
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If the document is revised or amended, you will be notified by email. The length changes occurring during such immersion indicate the general level of reactivity of rocks and whether tests should be made to determine the effect of aggregate prepared from the rocks upon the volume change in concrete.
Alkalies participating in the expansive reactions with aggregate constituents in concrete usually are derived from the hydraulic cement; under certain circumstances they may be derived from other constituents of concrete or from external sources. This standard is also available to be included in Standards Subscriptions. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.
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Your Alert Profile lists the documents that will be monitored. Proceed to Checkout Continue Shopping. PART 2 The author investigates the mortar bar test described in ASTM C showing that it can give misleading results, as some rocks such as metamorphic quartz and some carbonates exhibit slow but progressive expansion. Part I of this arrticle no appeared in the October issue of Concrete. Already Subscribed to this document. We have no amendments or corrections for this standard.
Two types of alkali reactivity of aggregates are recognized: Aggregates; Filing Info Accession Number: May 28 We have no amendments or corrections for this standard. Add to Alert PDF. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This test method is not suitable as a means to detect alkali-silica reaction. Please first verify your email before subscribing to alerts. This test method covers the determination of the expansive characteristics of carbonate rocks while immersed in a solution of sodium hydroxide NaOH at room temperature.
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The length changes occurring during such immersion indicate the general level of reactivity of the rock and whether tests should be made to determine the effect asgm aggregate prepared from the rock upon the volume change in concrete. Please first log in with a verified email before subscribing to alerts. The inch-pound units in parentheses are provided for information only.
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