ASTM C13 standard probes microbially induced corrosion

Source: ASTM International, West Conshohocken, Pa.

ASTM C13 Committee on Concrete Pipe is set to publish C1894 Standard Guide for Microbially Induced Corrosion of Concrete Products, and finalize two proposed documents it references: WK69718 Standard Test Methods for the Determination of the Effects of Biogenic Acidification on Concrete Antimicrobial Additives and/or Concrete Products and WK69719 Standard Test Methods for the Chemical Resistance of Concrete Products to Acid Attack.

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FHWA PUBLISHES ALKALI-AGGREGATE REACTIVITY REFERENCE

FHWA’s new Alkali- Aggregate Reactivity Facts Book

From the Federal Highway Administration’s Focus newsletter… Alkali-aggregate reactivity (AAR) can occur in concrete structures and pavements as both alkali-silica reaction (ASR) and  alkalicarbonate reaction (ACR). FHWA’s new Alkali-Aggregate Reactivity Facts Book (Pub. No. FHWA-HIF-13-019) discusses both types of reaction but concentrates on ASR, as cases of ACR are more limited.

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