An experimental study on the residual mechanical properties of fiber reinforced concrete with high temperature and load

Kim, Youngsun; Lee, Tae-Gyu; Kim, Gyu-Yong

doi:10.1617/s11527-012-9918-y

Cited by 46 publications

(23 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stroke rate utilised for defining material properties was sufficient in order to induce the minimum stressing rate (0.15 MPa/s) in compliance with ambient North American testing standards for hydraulically operated loading actuators [33]. The authors note that available studies which have used stroke control tests indicate that a variety of values, including 0.5 mm/min [37], have been used by other researchers to test concrete at high temperature [34,37].…”

Section: Loadingmentioning

confidence: 99%

Fire Performance of Sustainable Recycled Concrete Aggregates: Mechanical Properties at Elevated Temperatures and Current Research Needs

et al. 2015

View full text Add to dashboard Cite

The materials used for the construction of buildings are changing. There are now many sustainability drivers for developing novel green construction materials. An emerging material used for building construction is concrete with conventional coarse aggregates substituted as recycled concrete aggregates (RCA). This is a form of sustainable concrete. A finite number of buildings (>10) with this material have been constructed in North America, Europe and Asia. However; to help facilitate wide spread use and development of sustainable concrete with RCA, there is purpose in considering this material's at-elevated temperature (in-fire) mechanical properties. To date, this topic has seen limited research attention as it is difficult to study. The study herein considered the mechanical properties of conventional and sustainable concrete with RCA. The only difference between the conventional and the sustainable concrete mixes was the mass proportion of a conventional natural coarse aggregate, Limestone, which had been substituted with coarse RCA (at replacement proportions of 0%, 30% and 100%). Both the ambient and elevated temperature mechanical properties were considered with compressive mechanical tests using an innovative optical technology for strain measurement. Based on the analysis performed, a proportional decrease in retained strength and elasticity of concrete at-elevated temperature with increasing RCA content was observed. For example both mechanical properties showed a 0.2% decrease in retained value for every 1% RCA increase at 500°C. In addition the modelling parameter of Poisson ratio appeared to be influenced by the heat imposed and the aggregate type contained within the concrete. For example at 500°C, this parameter showed an 73% increase for concrete samples with only Limestone aggregate and a 15% decrease for samples with only RCA (of mixed origin primarily Siliceous). This paper concludes with highlighting current knowledge gaps and research needs that when addressed could help improve the facilitation of using sustainable concrete's with RCA in construction of buildings.

show abstract

Section: Loadingmentioning

confidence: 99%

Fire Performance of Sustainable Recycled Concrete Aggregates: Mechanical Properties at Elevated Temperatures and Current Research Needs

et al. 2015

View full text Add to dashboard Cite

show abstract

“…However, it is very strange that the preload prior to heating increased the residual strengths of concrete stub columns with preload during the high temperature exposure and cooling phase. It cannot be understood reasonably because the literature review shows that most experimental researches focused on the residual strengths of unstressed concrete at elevated temperatures [1][2][3][4][5][6][7][8][9][10][11][12][13] and after exposure to high temperature [14][15][16][17][18][19][20][21][22][23].…”

Section: Test Results Discussionmentioning

confidence: 99%

“…However, it can be concluded from some experimental results in the literature [1][2][3][4][5][6][7][8][9][10][11][12][13] that the preload prior to testing led to the beneficial effect on the compressive strength of concrete at elevated temperatures. The tested results described in Abrams [1] indicate the influence of the aggregate type, and show the beneficial effect of stressing the specimens to 0.4f c while heated.…”

Section: Test Results Discussionmentioning

confidence: 99%

“…Some researchers had conducted lots of experimental studies on the mechanical behaviour of concrete at elevated temperatures [1][2][3][4][5][6][7][8][9][10][11][12][13]. Abrams [1] presented a comparison of stressed, unstressed residual and unstressed compressive strength results for carbonate and siliceous aggregate concretes at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…Shi et al [9] carried out an experimental study on the effects of different stress-temperature paths on the mechanical behaviour of concrete at elevated temperature. Recently, some researchers published further experimental studies on the effects of high temperature and preload on the mechanical behaviour of concrete, selfcompacting concrete and fibre reinforced concrete at elevated temperature [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations