Effect of high temperatures on high performance steel fibre reinforced concrete

Lau, Andy T. Y.; Anson, M.

doi:10.1016/j.cemconres.2006.03.024

Cited by 316 publications

(165 citation statements)

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“…Since the work of the research pioneers, Lea and Stradling who in the 1920s investigated the influence of high temperatures on concrete strength, a number of research studies related to the fire resistance of concrete have been carried out. Initially, research was focused on the chemical and physical changes within the concrete, such as the decomposition of calcium hydroxide (Ca(OH) 2 ), the incompatibility at the aggregate-cement paste boundary and the crystal transformation of quartz (SiO 2 ) [9]. During the last decade, there has been extensive research on the fire performance of concrete and most studies put emphasis on aspects such as types of aggregate, addition of fibers, heating rate and maximum temperature level, methods of testing, etc.…”

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Effect of elevated temperatures and cooling regimes on normal strength concrete

2008

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SUMMARYThe compressive strength of normal strength concrete at elevated temperatures up to 700 • C and the effect of cooling regimes were investigated and compared in this study. Thus, two different mixture groups with initial strengths of 20 and 35 MPa were produced by using river sand, normal aggregate and portland cement. Thirteen different temperature values were chosen from 50 to 700 • C. The specimens were heated for 3 h at each temperature. After heating, concretes were cooled to room temperature either in water rapidly or in laboratory conditions gradually. The residual strengths were determined by an axial compressive strength test. Strength and unit weight losses were compared with the initial values. Throughout this study, ASTM and Turkish Standards were used. It was observed that concrete properties deteriorated with the heat; however, a small increase in strength was observed from 50 to 100 • C. Strength loss was more significant on the specimens rapidly cooled in water. Both concrete mixtures lost a significant part of their initial strength when the temperature reached 700 • C.

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“…In recent years different concrete specimens, including high-strength concrete [2,5,[15][16][17], fiber-reinforced concrete [9,[18][19][20], lightweight aggregate concrete [13,21] were used in high-temperature tests. In the high-strength concrete studies explosive spalling was the main problem.…”

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Effect of elevated temperatures and cooling regimes on normal strength concrete

2008

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“…The addition of steel fibers improves the performance of concrete in fire regardless the mixture and maximum temperature reached. Thus, the authors found that the addition of steel fibers in the concrete improves its compressive strength [12].…”

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confidence: 99%

Compressive strength at high temperatures of a concrete made with recycled tire textile and steel fibers

Santos

Rodrigues

2013

MATEC Web of Conferences

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Abstract. This paper presents the results of a research work on the evaluation of the compressive strength at high temperatures of a concrete made with recycled tire steel and textile fibers. It was considered five different concrete compositions, with a water/cement ratio (W/C = 0.43), differ only in the type and amount of fibers. The compositions with smaller amounts of textile fibers were those that gave better results. The compositions with steel fibers showed a less explosive rupture showing the effectiveness of this type of fibers in the spalling and cracking control.

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“…Elevated temperature weakens the bond between cement paste and aggregate, and breakdown of the cement gel structure which leads to the consequent loss in the load bearing capacity, increased tendency of drying shrinkage and structural cracking [4,5]. Strength deterioration of concrete exposed to elevated temperature may be due to several factors: temperature level, rate of heating, heating time, cooling method, applied load, type of aggregate, type of mineral admixture and air humidity [6][7][8]. Therefore, there are broadly variable results regarding the exposure of concrete to elevated temperature [9].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Elevated Temperature on the Lightweight Aggregate Concrete

Ibrahim

2017

KJAR

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Abstract:The use of lightweight concrete has become widely spread in concrete structures in the last years. Fire can be considered as a destructive hazard that attack concrete structures. In this research the effect of elevated temperature on lightweight aggregate concretes is studied. For this purpose, 81 cube shaped specimens were prepared from three different lightweight aggregate concrete mixes. After moist curing periods for 3, 7 and28 days, the specimens were subjected to ambient and elevated temperatures of 450⁰C and 650⁰C for 2hrs.The weight of the specimens before and after exposure to elevated temperatures was determined and the residual strength results for the specimens were compared. The results showed that, the elevated temperature induces a decrease in strength and significant weight losses in lightweight aggregate concrete.

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Effect of high temperatures on high performance steel fibre reinforced concrete

Cited by 316 publications

References 2 publications

Effect of elevated temperatures and cooling regimes on normal strength concrete

Effect of elevated temperatures and cooling regimes on normal strength concrete

Compressive strength at high temperatures of a concrete made with recycled tire textile and steel fibers

The Effect of Elevated Temperature on the Lightweight Aggregate Concrete

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