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Analysis of Russian and foreign methods of testing mineral additives for tensing concrete

Abstract

Compensated shrinkage concrete is becoming more widely used in the world. One of the ways to obtain this concrete is to introduce an expanding additive during its preparation. The article provides a comparative analysis of the characteristics of mineral additives and their applicability to extenders. In Russian standards, the quality of shrinkage compensated concrete is evaluated by self-stressing (deformations of specimens hardening in dynamometric jigs). This technique is patented in the Russian Federation and is proposed for inclusion in foreign standards.

About the Authors

L. Titova
NIIZHB named after A.A. Gvozdev JSC Research Center of Construction
Russian Federation


M. Titov
NIIZHB named after A.A. Gvozdev JSC Research Center of Construction
Russian Federation


References

1. ISO 22904 «Additions for concrete».

2. ISO 19596 «Admitures for concrete».

3. JSCE Guidelines for Concrete No.16 STANDARD SPECIFICATIONS FOR CONCRETE STRUCTURES - 2007. "Materials and Construction".

4. ASTM C878 / C878M - 14a Standard Test Method for Restrained Expansion of Shrinkage-Compensating Concrete.

5. GB 23439-2009 Expensive Agents for Concrete Chinese Classification: Q12 Cement composite material and additives.

6. Вильсон Г. Расширяющий цемент. Детройт, 1964.

7. ГОСТ Р 56592-2015. Добавки минеральные для бетонов и строительных растворов. Общие технические условия.

8. ГОСТ Р 56593-2015. Добавки минеральные для бетонов и строительных растворов. Методы испытаний.

9. ГОСТ 24544. Бетоны. Методы определения деформаций усадки и ползучести.

10. ГОСТ 18105. Бетоны. Правила контроля и оценки прочности.

11. ГОСТ 32803. Бетоны напрягающие. Технические условия.


Review

For citations:


Titova L., Titov M. Analysis of Russian and foreign methods of testing mineral additives for tensing concrete. Bulletin of Science and Research Center of Construction. 2020;24(1):148-154. (In Russ.)

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ISSN 2224-9494 (Print)
ISSN 2782-3938 (Online)