Structural behavior of FRP connector enabled precast geopolymer concrete sandwich panels subjected to one-side fire exposure

2022 ◽  
pp. 103524
Author(s):  
Jun-Qi Huang ◽  
Yu-Ye Xu ◽  
Hao Huang ◽  
Jian-Guo Dai
Keyword(s):  
Sandwich Panels ◽  
Structural Behavior ◽  
Geopolymer Concrete ◽  
Fire Exposure

scholarly journals Behavior of Quarry Rock Dust, Fly Ash and Slag Based Geopolymer Concrete Columns Reinforced with Steel Fibers under Eccentric Loading

2021 ◽  
Vol 11 (15) ◽  
pp. 6740
Author(s):  
Rana Muhammad Waqas ◽  
Faheem Butt
Keyword(s):  
Fly Ash ◽  
Concrete Cover ◽  
Steel Fibers ◽  
Structural Behavior ◽  
Partial Replacement ◽  
Geopolymer Concrete ◽  
Fiber Reinforced ◽  
Conventional Concrete ◽  
Source Materials ◽  
Rock Dust

Geopolymer concrete, also known as an earth-friendly concrete, has been under continuous study due to its environmental benefits and a sustainable alternative to conventional concrete construction. The supplies of many source materials, such as fly ash (FA) or slag (SG), to produce geopolymer concrete (GPC) may be limited; however, quarry rock dust (QRD) wastes (limestone, dolomite, or silica powders) formed by crushing rocks appear virtually endless. Although significant experimental research has been carried out on GPC, with a major focus on the mix design development, rheological, durability, and mechanical properties of the GPC mixes; still the information available on the structural behavior of GPC is rather limited. This has implications in extending GPC application from a laboratory-based technology to an at-site product. This study investigates the structural behavior of quarry-rock-dust-incorporated fiber-reinforced GPC columns under concentric and eccentric loading. In this study, a total of 20 columns with 200 mm square cross-section and 1000 mm height were tested. The FA and SG were used as source materials to produce GPC mixtures. The QRD was incorporated as a partial replacement (20%) of SG. The conventional concrete (CC) columns were prepared as the reference specimens. The effect of incorporating quarry rock dust as a replacement of SG, steel fibers, and loading conditions (concentric and eccentric loading) on the structural behavior of GPC columns were studied. The test results revealed that quarry rock dust is an adequate material that can be used as a source material in GPC to manufacture structural concrete members with satisfactory performance. The general performance of the GPC columns incorporating QRD (20%) is observed to be similar to that of GPC columns (without QRD) and CC columns. The addition of steel fibers considerably improves the loading capacity, ductility, and axial load–displacement behavior of the tested columns. The load capacities of fiber-reinforced GPC columns were about 5–7% greater in comparison to the CC columns. The spalling of concrete cover at failure was detected in all plain GPC columns, whereas the failure mode of all fiber-reinforced GPC columns is characterized with surface cracking leading to disintegration of concrete cover.

Experimental and Theoretical Study on Structural Behavior of Fabric Reinforced Concrete Sandwich Panels

2011 ◽  
Vol 4 (3) ◽  
pp. 663-668 ◽  
Author(s):  
Zhihua Chen ◽  
Ting Zhou ◽  
Hongbo Liu ◽  
Yonghao Chen ◽  
Xiaodun Wang
Keyword(s):  
Reinforced Concrete ◽  
Theoretical Study ◽  
Sandwich Panels ◽  
Structural Behavior

scholarly journals Effect of fire exposure on cracking, spalling and residual strength of fly ash geopolymer concrete

2014 ◽  
Vol 63 ◽  
pp. 584-592 ◽  
Author(s):  
Prabir Kumar Sarker ◽  
Sean Kelly ◽  
Zhitong Yao
Keyword(s):  
Fly Ash ◽  
Residual Strength ◽  
Geopolymer Concrete ◽  
Fire Exposure

scholarly journals Numerical modelling of sandwich panels with a non-continuous soft core

2018 ◽  
Vol 157 ◽  
pp. 06007
Author(s):  
Jolanta Pozorska
Keyword(s):  
Numerical Modelling ◽  
Static Analysis ◽  
Sandwich Panel ◽  
Sandwich Panels ◽  
Soft Core ◽  
Structural Behavior ◽  
Progressive Damage ◽  
Local Instability ◽  
Unilateral Constraints ◽  
The Core

The paper presents the problem of static analysis of sandwich structures with a non-continuous soft core. In the numerical 3D FE models, the core is divided into separated parts. The contact between these parts has the form of unilateral constraints. The model also allows for local debonding of the facing and local imperfections of sandwich panel geometry. Particular attention is paid to the problem of local instability of the facing that is compressed during bending. The phenomenon of progressive damage and the influence of non-continuity of the core on the structural behavior of the sandwich panel is also discussed.

Structural behavior of sandwich panels with asymmetrical boundary conditions

2015 ◽  
Vol 104 ◽  
pp. 227-234 ◽  
Author(s):  
Robert Studziński ◽  
Zbigniew Pozorski ◽  
Andrzej Garstecki
Keyword(s):  
Boundary Conditions ◽  
Sandwich Panels ◽  
Structural Behavior
Sign in / Sign up

Export Citation Format

Share Document