Flexural behaviour of ambient cured geopolymer concrete beams reinforced with BFRP bars under static and impact loads

2020 ◽  
pp. 113282 ◽  
Author(s):  
Zhijie Huang ◽  
Wensu Chen ◽  
Hong Hao ◽  
Zuyu Chen ◽  
Thong M. Pham ◽  
...  
Keyword(s):  
Concrete Beams ◽  
Impact Loads ◽  
Geopolymer Concrete ◽  
Flexural Behaviour

Flexural behaviour of geopolymer concrete beams reinforced with BFRP and GFRP polymer composites

2022 ◽  
pp. 136943322110542
Author(s):  
Nagajothi Subramanian ◽  
Elavenil Solaiyan ◽  
Angalaeswari Sendrayaperumal ◽  
Natrayan Lakshmaiya
Keyword(s):  
Crack Width ◽  
Concrete Beams ◽  
Bending Test ◽  
Geopolymer Concrete ◽  
Flexural Behaviour ◽  
Premature Failure ◽  
Reinforced Polymer ◽  
Steel Bars ◽  
Fibre Reinforced Polymer ◽  
Frp Bars

The paper presents the experimental investigations on the flexural behaviour of geopolymer concrete beams reinforced with Basalt Fibre Reinforced Polymer (BFRP)/Glass Fibre Reinforced Polymer (GFRP) rebars and the effect of inclusion of the new adhesively bonded BFRP/GFRP stirrups. M30 grade geopolymer and conventional concrete beams with the dimension of 100 × 160 × 1700 mm were cast to investigae the flexural behaviour of BFRP/GFRP and steel bars. This study also examined the mode of failure, deflection behaviour, curvature moment capacity, crack width, pattern, propagation, strains and average crack width of the BFRP/GFRP bars with stirrups in the geopolymer concretes using a four-point static bending test. The results were compared to that of conventional steel-reinforced concrete, and it was found that the Basalt and Glass reinforced polymer beams demonstrated premature failure and sudden shear failure. Further, the FRP bars exhibited higher mid-span deflection, crack width and crack propagation than steel bars. Crack spacing of the FRP bars decreased with an increase in the number of cracks. The correlation between the load and the deflection behaviour of the beams was determined using statistical analysis of multi variables regression.

scholarly journals Flexural Behaviour of Geopolymer Concrete Beams using Recycled Waste Glass as Fine Aggregate

2019 ◽  
Vol 8 (6S4) ◽  
pp. 81-88
Keyword(s):  
Concrete Beams ◽  
Waste Glass ◽  
Fine Aggregate ◽  
Geopolymer Concrete ◽  
Flexural Behaviour ◽  
Cement Concrete ◽  
River Sand ◽  
Concrete Production ◽  
Glass Aggregate ◽  
Recycled Waste

Cement substitutes and concrete alternatives are currently on the market to help in creating concrete a very ecofriendly material. In cement concrete production, heating and compounding method need large amounts of energy and emits minacious amounts of CO2 into the atmosphere. There has been an increasing significant interest in the development of cement less concrete called geopolymer concrete. In this study, cement is replaced entirely by ash and GGBS for making of geopolymer concrete. Now a days, the scarcity of river sand can have an effect on the development trade and hence there's a requirement of finding a replacement different material to switch the river sand. Non-reactive recycled waste glass is chosen as alternative to the river sand. Various grades of concrete including M 20, M 40 and M 60 grades are developed in GP concrete and also same proportion is used for making GP concrete with glass aggregate. In geopolymer preparation, NaOH of 8 molarity concentration is used. Flexural behaviour of beams is studied by casting of nine beams of size 125 mm × 200 mm × 1100 mm. The beams are designed as under reinforced sections. Out of nine beams, three beams of M 20, M 40 and M 60 grade conventional cement concrete beams, three beams of GP beams and the remaining three beams are made with RWGFA in GP. Beams are tested under two point loading for flexure. The ultimate load carrying capability of all beams is obtained. The crack and deflections of the beams are studied. The experimental results are compared with finite element modeling using ANSYS software

Shear behaviour of ambient cured geopolymer concrete beams reinforced with BFRP bars under static and impact loads

2021 ◽  
Vol 231 ◽  
pp. 111730
Author(s):  
Zhijie Huang ◽  
Wensu Chen ◽  
Hong Hao ◽  
Zuyu Chen ◽  
Thong M. Pham ◽  
...  
Keyword(s):  
Concrete Beams ◽  
Shear Behaviour ◽  
Impact Loads ◽  
Geopolymer Concrete

Influence of Molarity on Flexure Behaviour in Geopolymer Concrete Beams

2019 ◽  
Author(s):  
Dr. G. Narayana ◽  
Naveena M. P. ◽  
Ravichandra R. ◽  
P. Ramachandra
Keyword(s):  
Concrete Beams ◽  
Geopolymer Concrete

Flexural behaviour of hollow concrete beams under three points loading: Experimental and numerical study

Structures ◽  
2021 ◽  
Vol 32 ◽  
pp. 1543-1552
Author(s):  
A.S. Elamary ◽  
I.A. Sharaky ◽  
M. Alqurashi
Keyword(s):  
Concrete Beams ◽  
Numerical Study ◽  
Flexural Behaviour
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