Fire performance of high-strength concrete reinforced with recycled rubber particles

2011 ◽  
Vol 63 (3) ◽  
pp. 187-195 ◽  
Author(s):  
L.-J. Li ◽  
W.-F. Xie ◽  
F. Liu ◽  
Y.-C. Guo ◽  
J. Deng
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Fire Performance ◽  
Strength Concrete ◽  
Rubber Particles ◽  
Recycled Rubber

Innovative strategies for enhancing fire performance of high-strength concrete structures

2018 ◽  
Vol 21 (11) ◽  
pp. 1723-1732 ◽  
Author(s):  
Venkatesh KR Kodur
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Published Data ◽  
Structural Members ◽  
Fire Performance ◽  
Normal Strength Concrete ◽  
Innovative Strategies ◽  
Strength Concrete ◽  
Normal Strength ◽  
Fire Conditions

High-strength concrete is being increasingly used in a number of building applications, where structural fire safety is one of the primary design considerations. Many research studies clearly indicate that the fire performance of high-strength concrete is different from that of normal-strength concrete and that high-strength concrete may not exhibit same level of performance as normal-strength concrete under fire conditions. This article outlines key characteristics that influence the performance of high-strength concrete structural members under fire conditions. Data generated in previous experimental and numerical studies are utilized to illustrate various factors that influence fire performance of high-strength concrete structural members. Based on the published data, observations and trends on the behavior of high-strength concrete members, innovative strategies for mitigating spalling and enhancing fire resistance of high-strength concrete structural members are proposed.

Performance of high strength concrete containing recycled rubber

2019 ◽  
Vol 227 ◽  
pp. 116660 ◽  
Author(s):  
Ayman Abdelmonem ◽  
M.S. El-Feky ◽  
El-Sayed A.R. Nasr ◽  
Mohamed Kohail
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete ◽  
Recycled Rubber

scholarly journals Fire Performance of Columns Made of Normal and High Strength Concrete: A Comparative Analysis

2016 ◽  
Vol 711 ◽  
pp. 564-571 ◽  
Author(s):  
Thomas Gernay
Keyword(s):  
Bearing Capacity ◽  
High Strength Concrete ◽  
Concrete Strength ◽  
High Strength ◽  
Strength Loss ◽  
Fire Performance ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Strength Concrete ◽  
The Impact

The use of high strength concrete (HSC) in multi-story buildings has become increasingly popular. Selection of HSC over normal strength concrete (NSC) allows for reducing the dimensions of the columns sections. However, this reduction has consequences on the structural performance in case of fire, as smaller cross sections lead to faster temperature increase in the section core. Besides, HSC experiences higher rates of strength loss with temperature and a higher susceptibility to spalling than NSC. The fire performance of a column can thus be affected by selecting HSC over NSC. This research performs a comparison of the fire performance of HSC and NSC columns, based on numerical simulations by finite element method. The thermal and structural analyses of the columns are conducted with the software SAFIR®. The variation of concrete strength with temperature for the different concrete classes is adopted from Eurocode. Different configurations are compared, including columns with the same load bearing capacity and columns with the same cross section. The relative loss of load bearing capacity during the fire is found to be more pronounced for HSC columns than for NSC columns. The impact on fire resistance rating is discussed. These results suggest that consideration of fire loading limits the opportunities for use of HSC, especially when the objective is to reduce the dimensions of the columns sections.

Experimental study of recycled rubber-filled high-strength concrete

2009 ◽  
Vol 61 (7) ◽  
pp. 549-556 ◽  
Author(s):  
L.-J. Li ◽  
Z.-Z. Chen ◽  
W.-F. Xie ◽  
F. Liu
Keyword(s):  
Experimental Study ◽  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete ◽  
Recycled Rubber

Performance of Polypropylene Fiber and Rubber Powder Improved High Strength Concrete

2008 ◽  
Vol 400-402 ◽  
pp. 403-408
Author(s):  
Feng Liu ◽  
Jiang Zhu ◽  
Zhou Li Wen ◽  
Li Juan Li
Keyword(s):  
High Strength Concrete ◽  
Volume Fraction ◽  
Rubber Particle ◽  
Polypropylene Fiber ◽  
High Strength ◽  
Strength Concrete ◽  
Investigation Methods ◽  
Spalling Failure ◽  
Rubber Particles ◽  
Before And After

Based on high strength concrete (HSC), the improved HSC concrete was produced by adding different contents of fine grain rubber particles and polypropylene fibers. The grain size of the rubber particle is 420 m and the rubber content is 1%, 2%, and 3% of the mass of cementitious material respectively. The volume fraction of polypropylene fiber is 0.1%.The performance of HSC, rubber particle improved high strength concrete (RHSC), polypropylene fiber improved high strength concrete (PHSC) and polypropylene fiber hybrid rubber particle improved high strength concrete (PRHSC) before and after high temperature are studied. The investigation methods used are the external surface inspection, weight loss and residual strength testing. The experimental results show that rubber particles can improve the workability of HSC and PHSC under normal temperature. Polypropylene fiber can significantly improve the spalling failure resistance property of HSC and RHSC.

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