Hygrothermal Characterization of Porous Building Materials-Experiment Research on Isothermal Sorption and Capillary Problem

Abstract:

The research on water vapor isothermal sorption of porous building materials have an important function on controlling and solving hygrothermal problems, such as durability, thermal insulation, mold growth and indoor air quality, when building materials are in hygrothermal environment, especially in the high humidity environment. The isothermal sorption is used to describe the maximum moisture sorption capacity, if moisture content exceeds the limitation, probably there will be liquid water appearance, which lead to the risk of mold growth, decreasing durability and increasing thermal conductivity, and so on. The classic testing method of isothermal sorption could be found in ASTM Standards C 1498-01. In this paper, the eco-stucco, eco-fiber batt and eco-fiber board is tested using traditional method. Meanwhile, pore size distribution and capillary condensation is analyzed which is challenge for the design basis of hygrothermal character for the building envelope.

• Periodical: Advanced Materials Research (Volumes 418-420)
• Pages: 944-949
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.418-420.944
• Online since: December 2011
• Authors: Shui Yu, Xu Zhang
• Keywords: Capillary Condensation, Eco-Fiber Batt and Board, Eco-Stucco, Isothermal Sorption, Pore Size Distribution, Porous Material

References

[1] ASTM C 1498-01. Standard Test Method for Hygroscopic Sorption Isotherms of Building Materials, Annual Book of ASTM Standards, Vol. 04.06, pp.853-856, American Society for Testing and Materials, West Conshohocken, PA. (2001).

[2] ASHRAE. A Thermal and Moisture Property Database for Common Building and Insulation Materials, RP-1018, ASHRAE Transactions, Vol. 112(2), pp.485-497. (2006)

[3] ASTM C216-75a, Facing brick (solid masonry units made from clay or shale). American Society for Testing and Materials, U.S.A.

DOI: 10.1520/c0216-15

[4] A.M. Brandt.Cement Based Composites: Materials, Mechanical Properties and Performance, E&FN Spon, UK (2006)

[5] Carmeliet, J.: Journal of Thermal Insulation and Building Envelopes, Vol.24-3, pp.183-210(2001)

[6] Ernest A. Boucher : Journal of Material Science, Vol.11-9, pp.1734-1750(1976)

[7] F. Radjy : Journal of Material Science, Vol.9-5, pp.744-752(1974)

[8] H.W. Reinhardt, K. Gaber: Materials and Structure 23 , pp.3-15(1990)

[9] Glass, S.V.. Measurements of Moisture Transport in Wood-based Materials under Isothermal and Non isothermal Conditions, In: Proceedings, Thermal Performance of the Exterior Envelopes of Whole Buildings X: ASHRAE, 1-13. (2007)

[10] John Straube, Eric Burnett. Building Science for Building Enclosures. Westford Massachusetts: Building Science Press Inc, 293-365 (2005)

[11] Li, Kuishan, Zhang, Xu, and Gao, Jun :Journal of BUILDING PHYSICS, Vol. 32- 4 (2005)

[12] Menghao Qin, Rafik Belarbi, Abdelkarim Aït-Mokhtar and Lars-Olof Nilsson:Journal of Material Science, Vol.43-10, pp.3655-3663(2008)

[13] Q. G. Wang, K. Ahmet, Y. Yue and L. Y L: Journal of Material Science, Vol.40-4, pp.1013-1015(2005)

[14] Richards, R.F., Burch, D.M. and Thomasl, W.C. Water Vapor Sorption Measurements of Common Building Materials, ASHRAE Transactions, 98(2): pp.475-485 (1992).

[15] Shinsaku Tada,T, Kazumasa Watanabe:Cement and Concrete Research,35, p.2271– 2277(2005)

[16] WINSLOW D. N., DIAMONO S: Journal of Materials, Vol.5-3, p.564 (1970)

[17] WINSLOW N. M., SHAPIRO J. J. An instrument for the measurement of pore-size distribution by mercury penetration. ASTM Bulletin No. 236. (1959)

[18] Hunter, R.J. Foundations of Colloid Science 2nd Edition, Oxford University Press, (2001)