Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30054
The Influence of RHA on the Mechanical Properties of Mortar Heated Up To High Temperature

Authors: Md. Harunur Rashid, S. M. Kamal Uddin, Sobura khatun

Abstract:

The performance of mortar subjected to high temperature and cooled in normal ambient temperature was examined in the laboratory to comply with the situation of burning & cooling of a structure. Four series of cubical (5 X 5 X 5 cm) mortar specimens were made from OPC, and partial replacement (10, 15, 20, 25 & 30%) of OPC by Rice Husk Ash (RHA) produced in the uncontrolled environment. These specimens were heated in electric furnace to 200, 300, 400, 500 and 7000C. The specimens were kept in normal room temperature for cooling. They were then tested for mechanical properties and the results shows that particular 20% RHA mixed mortar shows better fire performance.

Keywords: Fire performance, Rice Husk

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1330011

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF

References:


[1] PrENV 1992-1-2: Eurocode 2: Design of Concrete Structures; part 1-2: Structural fire design; final draft 1992-1-2 May 1993.
[2] CEN/TC 250/SC2 N 351 prEN1992-1-2( 1st Draft) October 2000. Eurocode 2: Design of concrete structures - Part 1.2:General rules- Structural fire design.
[3] CEN/TC 250/SC2 N 0466 prEN1992-1-2( Draft for stage 19) July 2002. Eurocode 2: Design of concrete structures - Part 1.2: General rules - Structural fire design.
[4] Malhotra, H.L. The effect of temperature on the compressive strength of concrete. Magazine of concrete research, Vol 8 No 23. Aug 1956, pp 85-94.
[5] Zoldners, N.G. Effect of high temperature on concretes incorporating different aggregates. American Society of Testing Materials, 60/1960, pp1087-1108.
[6] J A brams, M.S. Compressive strength of concrete at temperature to 16000 F; ACI publication SP25 Paper SP25-2; American Concrete Institute, Detroit, 1971.
[7] Naji Givi, et al, "Contribution Of Rice Husk Ash To The Properties Of Mortar And Concrete: A Review" Review article, Journal of American Science,2010;6(3), p 157-165.
[8] Sarshar, R. "Effect of elevated temperatures on the strength of different cement pastes and concrete". PhD thesis, University of London, 1989.
[9] L.T. Phan,1996, "Fire Performance of High Strength Concrete: A Report of the state-of-the-art," Building and Fire Research Laboratory, National Institute of Standards and Technology, Maryland, pp.5-25.