Design and preparation of ultra-high performance concrete with low environmental impact

Shi, Ye; Long, Guangcheng; Ma, Cong; Xie, Youjun; He, Jionghuang

doi:10.1016/j.jclepro.2018.12.318

Cited by 183 publications

(45 citation statements)

References 54 publications

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“…Materials 2020, 13, x FOR PEER REVIEW 3 of 21 (UHPC) [23]. Based on the above analysis and methods, the greenness analysis of unit FGM was assessed by the indices.…”

Section: Raw Materialsmentioning

confidence: 99%

“…Additionally, embodied CO 2 emissions (e-CO 2 ) and embodied energy consumption (e-energy) of each group were calculated by summing up the products of e-CO 2 and e-energy of each raw material and the unit volume weight of materials in FGM. The values of e-CO 2 and e-energy from cement and fly ash were referred by the researches [23,24], and the values of four different coal gangues were provided by CRSC (Zhengzhou) Electrification Bureau Co, Ltd., (Zhengzhou, China) [38]. The embodied carbon dioxide and the embodied energy consumption of coal gangues were generated in the coal gangue processing (including sieving and crushing), and this research did not consider factors of storage and transportation.…”

Section: Green Degree Indices Of Fgmmentioning

confidence: 99%

“…Two power functions can fit well with these relationships, with R 2 coefficient approaching 0.7. In the previous research [23,24], the same relationships in self-compacting concrete and ultral high-performance concrete were also investigated. As same as the investigated law, the increase of compressive strength of FGM corresponds to a gradual decline of the e-CO 2 index (CI) and the e-energy index (EI), whatever the mix proportion is.…”

Section: Relationships Between Environmental Impact Indices Of Fgm Anmentioning

confidence: 99%

“…where embodied-CO 2 represents how much CO 2 exhausted from preparing unit m 3 concrete; embodied-energy represents how much energy consumed from producing unit m 3 concrete; σ is the 28 days compressive strength of the concrete. The latest research showed the embodied environmental impact of self-compacting concrete (SCC) [24] and ultra-high performance concrete (UHPC) [23]. Based on the above analysis and methods, the greenness analysis of unit FGM was assessed by the indices.…”

Section: Introductionmentioning

confidence: 99%

“…Some of the test results from Zhou [22] were also selected as reference to investigate the improvement and development in FGM. Additionally, high energy consumption and carbon emissions were considered as the most significant environmental effects in concrete preparation [23]. Consequently, the greenness of FGM for atmosphere should also be studied to determine its environmental value.…”

mentioning

confidence: 99%

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Preparation of Green Low Strength Mixture for Foundation Reinforcement Treatment by Using Fly Ash and Waste Coal Gangue

Long

et al. 2020

Materials

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Effective foundation reinforcement treatment is essential for modern large and complex infrastructure, while it is significant for developing new green high-performance materials for foundation reinforcement. This study investigates a new green concrete by using high volume fly-ash and coal gangue aggregates, which is expected to apply for foundation treatment of modern infrastructure with high loading-bear ability. In this experiment, 12 mix proportions of fly ash coal gangue mixture (the material name, abbreviated FGM) were designed, and its mechanical properties and durability performance were investigated. The mechanical properties of FGM include compressive strength, dynamic elastic modulus, dynamic shear modulus, Poisson’s ratio, and the stress–strain behaviors. The durability performance was evaluated by the parameters of acid resistance, which simulated an acid circumstance. After that, the environmental effects about carbon emission of this material were also investigated. Results show that the FGM with 84.6% wastes utilizing rate is a cost-effective material for foundation reinforcing treatment. Its compressive strength at 28 days and 60 days can reach more than 8 MPa and 10 MPa, respectively. After being immersed in the acid environment for 140 days, the mass loss (%) of the material could be under 3.5%. The greenness shows that the e-CO2 indices of FGM are lower than 20 kg/MPa·m3, and the e-energy indices are at below 150 MJ/MPa·m3. FGM has the advantages of acid resistance, waste recycling, and lower carbon emissions than the previous methods for foundation improvement.

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“…Materials 2020, 13, x FOR PEER REVIEW 3 of 21 (UHPC) [23]. Based on the above analysis and methods, the greenness analysis of unit FGM was assessed by the indices.…”

Section: Raw Materialsmentioning

confidence: 99%

Section: Green Degree Indices Of Fgmmentioning

confidence: 99%

Section: Relationships Between Environmental Impact Indices Of Fgm Anmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Preparation of Green Low Strength Mixture for Foundation Reinforcement Treatment by Using Fly Ash and Waste Coal Gangue

Long

et al. 2020

Materials

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Waste glass as a precursor in alkali‐activated materials: Mechanical, durability, and microstructural properties

Mobasheri

Mirvalad

Javid

et al. 2022

Structural Concrete

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The long-term characteristics and durability of alkali-activated mortars based on waste glass are crucial to better understand their performance in aggressive environments. In this regard, the performance of waste glass as a building material and its characteristics such as mechanical (compressive, flexural, and tensile strengths), durability (chloride migration coefficient, sulfate resistance, and drying shrinkage), and microstructural properties [x-ray diffraction (XRD), Fourier transform infrared (FTIR), and scanning electron microscopy (SEM) with energy dispersive x-ray analysis (SEM/EDX)] were evaluated. For this purpose, the specimens with different amounts of silica modulus and Na 2 O content were prepared. The specimens were cured at 95 C for 20 h and then kept at a relative humidity of 50% at room temperature until testing. The specimen with 10% Na 2 O and a silica modulus of 1.5 demonstrated the highest compressive, flexural, and tensile strengths. The specimens illustrated a lower chloride migration coefficient and lower expansion than the Portland cement one. By increasing both silica modulus and Na 2 O contents, the drying shrinkage of the specimens increased due to the presence of more free water. The microstructural results indicated that amorphous gels such as sodium aluminum silicate hydrate (N-A-S-H) and sodium (calcium) silicate aluminum hydrate [N-(C)-A-S-H] were formed. The results of this study signify the utilization possibility of waste glass as an eco-friendly material with desirable characteristics. K E Y W O R D Salkali-activated waste glass, drying shrinkage, embodied CO 2 , mechanical characteristic, microstructural properties

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The single and hybrid use of steel and basalt fibers on high‐temperature resistance of sustainable ultra‐high performance geopolymer cement mortars

Güler

Akbulut

2023

Structural Concrete

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This paper primarily examines the flowability, physical appearance, mass loss, residual compressive strength (RCS), and residual flexural strength (RFS) properties of steel (ST) and basalt (BA) fiber-added sustainable ultra-high performance geopolymer cement (UHPGPC) mortars exposed to hightemperature effects. According to the results obtained, ST and BA fibers adversely influence the workability properties of UHPGPC mortars and thus significantly reduce the spreading diameters of the mortars. However, ST and BA fibers substantially improve the RCS and RFS capacities of UHPGPC specimens exposed to high temperatures because they have a powerful bonding effect with the matrix and effectually restrict the development of micro-and macro-cracks with their bridging effect. Furthermore, this phenomenon is slightly more effective in hybrid form than using ST and BA fibers.

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Design and preparation of ultra-high performance concrete with low environmental impact

Cited by 183 publications

References 54 publications

Preparation of Green Low Strength Mixture for Foundation Reinforcement Treatment by Using Fly Ash and Waste Coal Gangue

Preparation of Green Low Strength Mixture for Foundation Reinforcement Treatment by Using Fly Ash and Waste Coal Gangue

Waste glass as a precursor in alkali‐activated materials: Mechanical, durability, and microstructural properties

The single and hybrid use of steel and basalt fibers on high‐temperature resistance of sustainable ultra‐high performance geopolymer cement mortars

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