The Influence of RHA on the Mechanical Properties of Mortar Heated Up To High Temperature
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.
[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.
[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.
@article{"International Journal of Architectural, Civil and Construction Sciences:50970", author = "Md. Harunur Rashid and S. M. Kamal Uddin and Sobura khatun", title = "The Influence of RHA on the Mechanical Properties of Mortar Heated Up To High Temperature", 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", volume = "4", number = "7", pages = "172-4", }