Researching on the Mechanic Properties of Early-Strength Polyurethane Concrete and its Affecting Factors

Abstract:

The early-strength polyurethane concrete technology is the new outcomes of materials used in the structure engineering these years, which mixed polyurethane resin of fast concretion properties with certain combination materials to form stable organization, and it can be applied in the fast filling and surface repairing of the roads and concrete structure. According to the high standards of the aggregate used in the concrete, this paper presents a new formulation of aqueous polyurethane concrete. By comparing the effects of main parameters such as moisture content, temperature, addition etc. working on the solidification though formulations experiments and strength experiments, it was found that the solidification need different moisture content at different temperatures. It is testified that the compressive strength of this new polyurethane concrete is 22.70MPa in practical application and theres no melt and decompose phenomena after marinating for a long time in marinating experiments, which satisfied the engineering need.

• Periodical: Applied Mechanics and Materials (Volume 518)
• Pages: 225-230
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.518.225
• Online since: February 2014
• Authors: Kai Jiang, Qian Su, Hao Bai, Xu Feng
• Keywords: Affecting Factors, Aqueous Polyurethane Concrete, Formulation Experiments, Mechanic Property, Strength Experiment

References

[1] A.M. Neville. Properties of concrete. PITMAN PUBLISHING LIMITED (London) (1981).

[2] P.C. Aticin and A.M. Neville, Concrete Intentional, 1993(5).

[3] Rapid-hardening Cements and Patching Material. REMR TECHNICAL NOTE CS-MR- 7. 3. (1992).

[4] P.K. Mehta. Influence of fly ash characteristics on the strength of Portland ash cement land and Concrete Research. 1985, 15(4): 669-674.

DOI: 10.1016/0008-8846(85)90067-5

[5] Klein Symposium on Expansive Cement Concrete, ACI, SP-38(1973).

[6] Cedric Wilson Symposium on Expansive Concrete, ACI, SP-64(1980).

[7] 7th. International Congress on the Chemistry of Cement, Bulletin Vol. Ⅲ (1980).

[8] A.M. Neville, Properties of Concrete (3rd Edition, 1981).

[9] Schwete. H.E.W. Symposium on Structure of Portland cement Portland Concrete. Special Report 90, Highway Research Board. (1996).

[10] Takeshi Y etc. Strength and Freezing-and-Thawing resistance of Concrete Incorporating Condensed Silica Furne. ACI SP51-54. (1986).

[11] Paul P. Kraai, A Proposed Test to Determinate the Cracking Potential due to Drying Shrinkage of Concrete, Concrete Construction/Sep. (1985).

[12] B.F. McCullough, Martin L. Cawley, CRCP Design Based on Theoretical and Field Performance, Proceedings of 2nd International conference on concrete Pavement Design. 1981. 8.