Preparation and Research of the High-Strength Lightweight Concrete Based on Hollow Microspheres

Abstract:

The paper presents the results of research aimed at development of nanomodified high-strength lightweight concrete for construction. The developed concretes are of low average density and high ultimate compressive strength. It is shown that to produce this type of concrete one need to use hollow glass and aluminosilicate microspheres. To increase the durability of adhesion between cement stone and fine filler the authors offer to use complex nanodimensional modifier based on iron hydroxide sol and silica sol as a surface nanomodifier for hollow microspheres. It is hypothesized that the proposed modifier has complex effect on the activity of the cement hydration and, at the same time increases bond strength between filler and cement-mineral matrix. The compositions for energy-efficient nanomodified high-strength lightweight concrete which density is 1300...1500 kg/m3 and compressive strength is 40...70 MPa have been developed. The approaches to the design of high-strength lightweight concrete with density of less than 2000 kg/m³ are formulated. It is noted that the proposed concretes possess dense homogeneous structure and moderate mobility. Thus, they allow processing by vibration during production. The economic and practical implications for realization of high-strength lightweight concrete in industrial production (in particular, for construction of high-rise buildings) have been justified. The results of industrial testing of new compositions in precast concrete technology are shown.

• Periodical: Advanced Materials Research (Volume 746)
• Pages: 285-288
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.746.285
• Online since: August 2013
• Authors: Evgeniy Valerjevich Korolev, Alexandr Sergeevich Inozemtcev
• Keywords: Energy Efficient Concrete, High-Strength Lightweight Concrete, Lightweight Concrete for Construction, Nanotechnology

References

[1] J. Alduaij et al., in: Cement and Concrete Composites, Vol. 21 (1999), pp.453-458.

[2] A.P. Proshin et al., in: Building materials. #3 (2002), pp.14-15.

[3] A.I. Bedov et al., in: Reports of MGSU. #3. (2012), pp.76-84.

[4] S.P. McBride et al., in: Journal of materials science. Vol. 37 (2002), pp.4217-4225.

[5] J. A. Rossignolo et al., in: Cem. Con. Compo. Vol. 25 (2003), pp.77-82.

[6] Yasar E. et al., in: Materials Letters. Vol. 57 (2003), pp.2267-2270.

[7] Evaluation of fatigue durability precast PC slab lightweight high-strength / Technical Report Ishikawajimaharima, Vol. 44, #2 (2004), pp.83-90.

[8] A.A. Andrianov. Abst. diss. … cand. tech. science. Moscow (2007), 15 p.

[9] A.N. Ponomarev, M.I. Yudovich, RF Patent 2355656 (2009).

[10] O.L. Figovsky et al., in: Nanotechnologies in construction, #3 (2012), pp.4-17.

[11] A.N. Bobryshev et al. Synergistic of composites. Lipeck (1994), 153 p.

[12] J.Y. Wang et al., in: Cement and Concrete Research. Vol. 42 (2012), p.727.

[13] Kretova U.V. Abst. diss. .. cand. tech. science. Moscow (2012), 22 p.

[14] D.V. Oreshkin et al., in: Oil industry engineer, #3 (2010), pp.43-44.

[15] A.V. Klochkov. Abst. diss. .. cand. tech. science. St. Petersburg (2012), 22 p.

[16] A.N. Grishina et al., in: proceedings of the second conf. «Sol-gel». Sevastopol (2012), p.28.

[17] Information on http: /ntsr. info/science/library/2906. htm.

[18] A.S. Inozemtcev et al., in: Nanotechnologies in construction, #1 (2013), pp.4-17.

[19] A.S. Inozemtcev et al., in: Reports of Povolzh'je. (2012), pp.198-206.