Multi-response optimization of hybrid fibre engineered cementitious composite using Grey-Taguchi method and utility concept

2022 ◽  
Vol 319 ◽  
pp. 126040
Author(s):  
S. Rawat ◽  
Y.X. Zhang ◽  
C.K. Lee
Keyword(s):  
Taguchi Method ◽  
Cementitious Composite ◽  
Engineered Cementitious Composite ◽  
Utility Concept ◽  
Hybrid Fibre ◽  
Response Optimization ◽  
Grey Taguchi

scholarly journals Engineering Properties of Engineered Cementitious Composite and Multi-Response Optimization Using PCA-Based Taguchi Method

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2402 ◽  
Author(s):  
Junfei Zhong ◽  
Jun Shi ◽  
Jiyang Shen ◽  
Guangchun Zhou ◽  
Zonglin Wang
Keyword(s):  
Taguchi Method ◽  
Mix Design ◽  
Silica Sand ◽  
Engineering Properties ◽  
Cementitious Composite ◽  
Design Factor ◽  
Engineered Cementitious Composite ◽  
Utility Concept ◽  
Thaw Cycle ◽  
Principal Performance

The engineered cementitious composite (ECC) mixtures were prepared with Portland cement, ground fly ash, silica sand, and polyvinyl alcohol (PVA) fibers. Accordingly, four mix design factors with five levels each were designed using the Taguchi method. The engineering properties of ECC (flow expansion, compressive strength, flexural strength, charge passed, and maximum freeze–thaw cycle) were evaluated, and the single-response optimizations were conducted separately. Unlike other studies assigning a relative weighting parameter to each response, the principal component analysis (PCA) was innovatively introduced to optimize the ECC’s multiple responses so that the single principal performance was obtained from the most objective perspective. Furthermore, the weighting parameters for utility concept were determined by the PCA. Thereafter, an optimum mix formulation was estimated using the PCA-based Taguchi method and the updated utility concept, which provided the most desired balance of these engineering properties. Finally, the contribution of each mix design factor to the principal performance of ECC was examined, and the estimated mix formulation was verified via an additional experiment.

High Velocity Impact Behaviour of Hybrid-Fiber Engineered Cementitious Composite Panels

2012 ◽  
Vol 450-451 ◽  
pp. 563-567 ◽  
Author(s):  
Joel Bell ◽  
Yi Xia Zhang ◽  
Khin Soe ◽  
Phillip Hermes
Keyword(s):  
High Velocity ◽  
Impact Damage ◽  
Impact Resistance ◽  
High Velocity Impact ◽  
Cementitious Composite ◽  
Protective Material ◽  
Velocity Impact ◽  
Impact Behaviour ◽  
Engineered Cementitious Composite ◽  
Hybrid Fibre

High-velocity impact behaviour of hybrid-fibre engineered cementitious composite (ECC) panels subjected to an impact from a hardened steel, ogive-nosed projectile at velocities between 300-700 m/s is investigated and reported in this paper. The new ECC mix contains a proportion of 0.75% volume high-modulus steel fibres and 1.25% volume low modulus polyvinyl-alcohol (PVA) fibres. The mix is designed to achieve a desired balance between the strain hardening behaviour and impact resistance of material required for impact and blast resistant structures. The new hybrid-fibre ECC demonstrates its excellent capability for impact resistance and strong potential as a protective material with reduced impact damage and distributed micro cracking.

scholarly journals Stress–strain behaviour of hybrid-fibre engineered cementitious composite in compression

2020 ◽  
Vol 32 (2) ◽  
pp. 53-65 ◽  
Author(s):  
Zhenbo Wang ◽  
Jianping Zuo ◽  
Xiaoyan Zhang ◽  
Guanghui Jiang ◽  
Lulu Feng
Keyword(s):  
Cementitious Composite ◽  
Stress Strain ◽  
Engineered Cementitious Composite ◽  
Strain Behaviour ◽  
Hybrid Fibre

High-velocity impact behaviour of a new hybrid fibre-reinforced cementitious composite

2017 ◽  
Vol 21 (4) ◽  
pp. 589-597 ◽  
Author(s):  
YX Zhang ◽  
Zachary Kerr ◽  
Brian Jarvis ◽  
Rhys J Volant
Keyword(s):  
High Velocity ◽  
Impact Resistance ◽  
High Velocity Impact ◽  
Cementitious Composite ◽  
Velocity Impact ◽  
Steel Fibres ◽  
Engineered Cementitious Composite ◽  
Concrete Panels ◽  
Hybrid Fibre ◽  
The Impact

In this article, a new engineered cementitious composite reinforced with 0.6% volume steel fibres and 1.5% volume polyvinyl-alcohol fibres is developed aiming for enhanced impact resistance compared to other construction materials. Fundamental mechanical properties of the new composite including the compressive strength, Young’s modulus, tensile strength and flexural behaviour were tested. To calibrate the impact resistance of the new composite, high-velocity impact tests of panels made of the new material were conducted when subjected to impact from a standard 7.62 mm round in-service bullet fired from a knight armament SR-25 military rifle. For comparison, plain concrete panels and concrete panels reinforced with 2% volume steel fibres were also tested. The post-impact responses of the panels in terms of crater sizes, damage failure mode, fragmentation size, weight and regress velocity are analysed and compared to characterize the impact resistance of the new engineered cementitious composite. The test results demonstrate significantly enhanced impact and shatter resistance of the new hybrid fibre-reinforced cementitious composite with reduced spalling and fragmentation, localized damage areas and improved cracking resistance.

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