Engineered Cementitious Composites (ECC) with limestone calcined clay cement (LC3)

Zhang, Duo; Jaworska, Beata; He, Zhaoyi; Dahlquist, Kensey

doi:10.1016/j.cemconcomp.2020.103766

Cited by 134 publications

(22 citation statements)

References 29 publications

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“…In this context, cement industry is highly requested to reduce energy consumption and greenhouse gases emissions. Several strategies were identified in order to reduce the environmental impact of cement industry such as: (i) the use of alternative fuels and raw materials in the production process of OPC [7,8]; (ii) the use of supplementary cementing materials, such as fly ash, silica fume, calcined clay, pozollan and ground granulated blast furnace slag [9,10]; (iii) the development of new low-CO2 binders, such as alkali-activated materials, geopolymers, calcium aluminate cement, limestone calcined clay cement and calcium sulfoaluminate cement [3,[11][12][13]; (iv) the carbon capture and storage [14,15].…”

Section: Introductionmentioning

confidence: 99%

Influence of polycarboxylate superplasticizer, citric acid and their combination on the hydration and workability of calcium sulfoaluminate cement

Belhadi

Govin

Grosseau

2021

Cement and Concrete Research

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PCEs are well known to improve the initial fluidity of CSA. However, their dispersion efficiency drops quickly over time. This issue can be solved by incorporating retarders. In this context, this paper deals with the influence of citric acid, used as a retarder, PCE and their combination on the hydration and workability of CSA. Isothermal calorimetry, XRD and TG analysis were used to describe the hydration process, while workability was characterized with the mini-cone test. Adsorption behavior was investigated using total organic carbon analyzer coupled with ion chromatography. Results show that the introduction of citric acid retained the dispersion efficiency of PCE over time. However, the initial dispersion efficiency of PCE was decreased by citric acid as the latter tend to adsorb first on the surface of cement grains, inhibiting the adsorption of PCE. A dispersion model was proposed to describe the acting mechanism of these admixtures on CSA.

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Section: Introductionmentioning

confidence: 99%

Influence of polycarboxylate superplasticizer, citric acid and their combination on the hydration and workability of calcium sulfoaluminate cement

Belhadi

Govin

Grosseau

2021

Cement and Concrete Research

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“…1 The ECC, also known as flexible concrete, can be the right solution for increasing structures' ductility. 2 The mechanical behavior of ECC is excellent in bending, which is similar to the flexibility of the metals 3 but the flexibility of ECC depends on the fiber dispersion and mixing method. 4 The tensile strain in this composite reaches up to 8%.…”

Section: Introductionmentioning

confidence: 92%

Effect of freeze and thaw cycle on the mechanical properties of engineered cementitious composites with un-oiled fibers containing liquid and solid polymers

Azadmanesh

Hashemi

Ghasemi

2022

Journal of Composite Materials

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Nowadays, the application of the engineered cementitious composites(ECC) is expected to highly develop. Due to the lack of access to oiled- polyvinyl alcohol (PVA) fibers in many parts of the world, the implementation of the ECC has contained many difficulties. In this study, to increase the mechanical properties of ECC with the use of un-oiled PVA fibers, the polymers of styrene butadiene rubber (SBR), and ethylene vinyl acetate (EVA) were taken into account to resolve the abovementioned issue. Herein, also in order to enhance the tensile and flexural properties of ECC, the cement was replaced by polymers. Accordingly, a total of 7 mix designs were planned to conduct the proposed tests. The compressive strength, uniaxial tensile strength, and three-point bending tests were performed on the ECC at their 28-day age with consideration of the freeze and thaw cycle. The results of this research illustrated that the use of polymers can enhance the tensile and flexural properties of the ECC with un-oiled PVA fibers. The tensile strain in this study increased by more than 3% after the application of the polymers. Furthermore, the compressive strength increased by more than 47 MPa, and the deflection at the mid-span reached more than 9 mm in the bending test. However, the results showed that the use of polymers was effective on the freeze and thaw cycle and almost preserved the mechanical properties of the ECC. SBR latex has higher compatibility with the ECC in comparison with EVA powder.

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“…Yu et al have used ultrahigh-volume limestone and calcined clay blend to produce ECC, which exhibits tensile strain capacity of 0.57–1.58% and tensile strength of 3.24–5.19 MPa [ 24 ]. Ductile LC 3 -ECCs with a tensile strain capacity of 6% are also reported in [ 25 , 26 ]. Although substantial progress has been made, the in-situ fiber distribution state of ECC incorporating LC 3 has not yet been studied.…”

Section: Introductionmentioning

confidence: 96%

Multiscale Investigation on the Performance of Engineered Cementitious Composites Incorporating PE Fiber and Limstone Calcined Clay Cement (LC3)

et al. 2022

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Limestone calcined clay cement (LC3) is successfully used to fabricate engineered cementitious composites (ECC) exhibiting tensile strength σtu of 9.55 ± 0.59 MPa or tensile strain capacity εtu of 8.53 ± 0.30%. The high tensile strength of the composites is closely related to the improvement of fiber/matrix interfacial bond strength, and the high ductility is attributed to the enhancement of fiber dispersion homogeneity. For the case of ECC incorporating 50% LC3, the reduction of initial cracking stress σtc that favors the growth of the crack in a controlled manner also contributes to the improvement of strain hardening behavior. The composition analysis indicates that carboaluminates and additional hydration products including C-(A)-S-H and ettringite are generated, which contributes to the densification of the microstructure of the ECC matrix. The pore structure is thus remarkably refined. Besides, when ordinary Portland cement (OPC) is partly replaced by LC3, the consumed energy and equivalent CO2 emission decrease, especially the equivalent CO2 emission with the reduction ratio attaining 40.31%. It is found that ECC using 35% LC3 exhibits the highest mechanical resistance and ECC incorporating 50% LC3 shows the highest ductility from the environmental point of view.

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Engineered Cementitious Composites (ECC) with limestone calcined clay cement (LC3)

Cited by 134 publications

References 29 publications

Influence of polycarboxylate superplasticizer, citric acid and their combination on the hydration and workability of calcium sulfoaluminate cement

Influence of polycarboxylate superplasticizer, citric acid and their combination on the hydration and workability of calcium sulfoaluminate cement

Effect of freeze and thaw cycle on the mechanical properties of engineered cementitious composites with un-oiled fibers containing liquid and solid polymers

Multiscale Investigation on the Performance of Engineered Cementitious Composites Incorporating PE Fiber and Limstone Calcined Clay Cement (LC3)

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