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Fire Performance of High-Strength Concrete: A Report of the State-of-the-Art.

PB97132153

Publication Date	1996
Personal Author	Phan, L. T.
Page Count	117
Abstract	A review is presented of experimental and analytical studies on the performance of concrete when exposed to short-term, rapid heating as in a fire. Emphasis is placed on concretes with high original compressive strengths, that is, high-strength concretes (HSC). The compiled test data revealed distinct difference in mechanical properties of HSC and normal strength concrete (NSC) in the range between room temperature and about 450 degrees C. The differences decreased at temperature above 450 degrees C. What is more important is that many test programs, but not all, reported that HSC experienced explosive spalling during the fire tests. The review showed a lack of experimental data for lightweight HSC and HSC heated under a constant preload to simulate the stress conditions in HSC columns. The report concludes with an outline of a research plan to gain an understanding of the failure mechanisms in fire exposed HSC.
Keywords	High strength concretes Fire tests Compressive strength Test methods Standards Modulus of elasticity Construction materials Spalling Temperature
Source Agency	National Institute of Standards and Technology
NTIS Subject Category	89G - Construction Materials, Components, & Equipment 50C - Construction Equipment, Materials, & Supplies
Corporate Authors	National Inst. of Standards and Technology (BFRL), Gaithersburg, MD. Structures Div.
Document Type	Technical Report
NTIS Issue Number	199708

Fire Performance of High-Strength Concrete: A Report of the State-of-the-Art.

Fire Performance of High-Strength Concrete: A Report of the State-of-the-Art.
PB97132153

Publication Date	1996
Personal Author	Phan, L. T.
Page Count	117
Abstract	A review is presented of experimental and analytical studies on the performance of concrete when exposed to short-term, rapid heating as in a fire. Emphasis is placed on concretes with high original compressive strengths, that is, high-strength concretes (HSC). The compiled test data revealed distinct difference in mechanical properties of HSC and normal strength concrete (NSC) in the range between room temperature and about 450 degrees C. The differences decreased at temperature above 450 degrees C. What is more important is that many test programs, but not all, reported that HSC experienced explosive spalling during the fire tests. The review showed a lack of experimental data for lightweight HSC and HSC heated under a constant preload to simulate the stress conditions in HSC columns. The report concludes with an outline of a research plan to gain an understanding of the failure mechanisms in fire exposed HSC.
Keywords	High strength concretes Fire tests Compressive strength Test methods Standards Modulus of elasticity Construction materials Spalling Temperature
Source Agency	National Institute of Standards and Technology
NTIS Subject Category	89G - Construction Materials, Components, & Equipment 50C - Construction Equipment, Materials, & Supplies
Corporate Authors	National Inst. of Standards and Technology (BFRL), Gaithersburg, MD. Structures Div.
Document Type	Technical Report
NTIS Issue Number	199708