Effect of Modern Air Entraining Admixtures on Physical Properties of Construction Mortars

Abstract:

The basic feature characterising the concrete’s quality and its usefulness for a structure is compressive strength. However, other features, such as frost resistance, absorbability, tightness, abrasiveness, decide on the durability of concrete in the structure as well. The paper presents the results of tests conducted on an ecological air entraining agent applied as a concrete mix admixture. The air entrainment of a concrete mix is aimed at entraining additional air pores with appropriate shape, size, and distribution into the concrete structure. The air entrainment is one of the main technological processes aimed at improving the concrete’s resistance to destructive effect of frost [1,2,3,4].

• Periodical: Materials Science Forum (Volume 923)
• Pages: 115-119
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.923.115
• Online since: May 2018
• Authors: Michał Babiak, Maria Ratajczak*, Piotr Kulczewski, Jacek Kosno
• Keywords: Absorbability, Air Entrainment, Hydrophobization, Mortar

References

[1] Z. Jamroży: Concrete and its technologies, Wydawnictwo Naukowe PWN SA, Warszawa (2009).

[2] W. Kurdowski: Cement and concrete chemistry, Stowarzyszenie Producentów Cementu, Kraków (2010).

[3] P. Łukowski: Admixtures for mortars and concretes, Stowarzyszenie Producentów Cementu, Kraków (2008).

[4] K. Zieliński: Podstawy technologii betonu [Basics of concrete technology], Wydawnictwo Politechniki Poznańskiej, Poznań (2012).

[5] K. Ramamurthy, N. Narayanan: Factors influencing the density and compressive strength of aerated concrete, Magazine of Concrete Research 52(3), pp.163-168.

DOI: 10.1680/macr.2000.52.3.163

[6] PN-EN 1008 – Mixing water for concrete – Specification for sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete.

DOI: 10.3403/02609198

[7] PN-EN 12620 – Aggregates for concrete.

[8] PN-EN 197-1:2007 – Cement. Part 1: Composition, specifications and conformity criteria for common cements.

[9] PN-EN 196-1:2006 – Methods of testing cement – Part 1: Determination of strength.

[10] PN-EN 12350-7:2011 – Testing fresh concrete – Part 7: Air content – Pressure methods.

[11] PN-EN 1015-3:2000 – Methods of test for mortar for masonry – Determination of consistence of fresh mortar (by flow table).

DOI: 10.3403/01541440

[12] PN-EN 480-5:2008 – Admixtures for concrete, mortar and grout – Test methods – Part 5: Determination of capillary absorption.

DOI: 10.3403/30129086