The effects of synthetic wollastonite developed with calcite and quartz on high performance mortars

Öz, Hatice Öznur; Güneş, Muhammet

doi:10.1002/suco.201900520

Cited by 14 publications

(19 citation statements)

References 55 publications

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“…CaCO 3 tended to decrease with the addition of synthetic wollastonite. Öz and Güneş [ 7 ], on the other hand, examined the effects of synthetic wollastonite on high-performance mortars. A total of five mixtures were formed: control mixture and usage of synthetic wollastonite at 3%, 6%, 9% and 12% ratios instead of cement.…”

Section: Cement Paste and Mortarmentioning

confidence: 99%

“…Thanks to the synthetic wollastonite filling effect, the microstructure in the cement matrix condensed. Therefore, synthetic wollastonite reduced the water absorption of the material and provided pore discontinuity in the cement [ 7 , 20 , 32 , 39 ]. While the Yücel and Özcan [ 13 ] 12% synthetic wollastonite mixture was better than the control mixture, it was worse than the control mixture in the study by Öz and Güneş [ 7 ]; this difference is due to the w/c ratio.…”

Section: Cement Paste and Mortarmentioning

confidence: 99%

“…Therefore, synthetic wollastonite reduced the water absorption of the material and provided pore discontinuity in the cement [ 7 , 20 , 32 , 39 ]. While the Yücel and Özcan [ 13 ] 12% synthetic wollastonite mixture was better than the control mixture, it was worse than the control mixture in the study by Öz and Güneş [ 7 ]; this difference is due to the w/c ratio. Usage of synthetic wollastonite up to a 10% ratio also indicates very valuable findings for future studies.…”

Section: Cement Paste and Mortarmentioning

confidence: 99%

“…Concrete, which is the most used construction material thanks to its superior properties [ 1 ], increases production every year, and it is estimated that it reaches approximately 11 billion metric tons annually [ 2 , 3 , 4 ]. Cement, which constitutes 10–15% of concrete by volume [ 4 , 5 ], is the most expensive component of concrete and causes the main environmental and energy consumption problems [ 6 , 7 ]. For example, cement, which is responsible for over 5% of global CO 2 emissions [ 8 , 9 ], generates approximately 50% of these emissions during the calcination phase of carbonate raw material [ 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, wollastonite can enhance environmental sustainability and durability properties in cement-based composites [ 13 ], and it has the capability to decrease the cost of cement-based composites. However, its availability is limited because it is a natural mineral [ 14 ]; thus, researchers have focused on production of synthetic wollastonite [ 7 , 13 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Performance of Different Types of Fibrous Concretes Produced by Using Wollastonite

2022

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Production of cement and aggregate used in cement-based composites causes many environmental and energy problems. Decreasing the usage of cement and aggregate is a crucial and currently relevant challenge to provide sustainability. Inert materials can also be used instead of cement and aggregates, similar to pozzolanic materials, and they have positive effects on cement-based composites. One of the inert materials used in cement-based composites is wollastonite (calcium metasilicate-CaSiO3), which has been investigated and attracted attention of many researchers. This article presents state-of-the-art research regarding fibrous concretes produced with wollastonite, such as mortars, conventional concrete, engineered cementitious composites, geopolymer concrete, self-compacting concrete, ultra-high-performance concrete and pavement concrete. The use of synthetic wollastonite, which is a novel issue, its high aspect ratio and allowing the use of waste material are also evaluated. Studies in the literature show that the use of wollastonite in different types of concrete improves performance properties, such as mechanical/durability properties, and provides environmental–economic efficiency. It has been proven by studies that wollastonite is a material with an inert structure, and, therefore, its behavior is similar to that of a fiber in cementitious composites due to its acicular particle structure.

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Section: Cement Paste and Mortarmentioning

confidence: 99%

Section: Cement Paste and Mortarmentioning

confidence: 99%

Section: Cement Paste and Mortarmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Evaluation of the Performance of Different Types of Fibrous Concretes Produced by Using Wollastonite

2022

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Mitigating autogenic shrinkage in high‐performance concrete using wollastonite: A structural enhancement approach

Aziza,

Li,

Huang

et al. 2024

Structural Concrete

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This study investigates the influence of wollastonite fiber as a reinforcement in high‐performance concrete (HPC), focusing on its potential to mitigate autogenic shrinkage and enhance overall structural properties. HPC known for its superior strength and low permeability, often suffers from intensified autogenic shrinkage, leading to micro‐cracking and compromising durability. To address this challenge, wollastonite was incorporated at different substitutions (0%, 5%, 10%, and 15%) for both cement and aggregate. The experimental program involved a systematic evaluation of compressive strength, flexural strength, porosity, water absorption, and corrosion resistance with tests conducted at different curing periods. We found that the addition of 10% wollastonite significantly enhances compressive strength (up to 20% after 90 days) and flexural strength (maximum improvement of 21%). The water permeability was decreased by 29% and improved resistance to steel reinforcement corrosion, demonstrating enhanced durability compared to conventional HPC. However, diminishing returns were observed at higher wollastonite replacement levels (15%), indicating a threshold beyond which mechanical and durability benefits were reduced due to potential issues with fiber dispersion and workability. Our findings suggest that wollastonite is a promising, cost‐effective additive for improving HPC. The study contributes new understandings into optimizing HPC mixtures for greater durability and sustainability, while also reducing the environmental footprint through partial cement replacement. Future research is needed to explore the long‐term performance of wollastonite‐reinforced HPC under different environmental conditions and its combination with other supplementary cementitious materials for further enhancement.

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Utilizing wollastonite in concrete as a replacement of cement: impact of carbonation and pore structure evaluation using EIS

Mirkute,

Boppana

2024

Innov. Infrastruct. Solut.

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The effects of synthetic wollastonite developed with calcite and quartz on high performance mortars

Cited by 14 publications

References 55 publications

Evaluation of the Performance of Different Types of Fibrous Concretes Produced by Using Wollastonite

Evaluation of the Performance of Different Types of Fibrous Concretes Produced by Using Wollastonite

Mitigating autogenic shrinkage in high‐performance concrete using wollastonite: A structural enhancement approach

Utilizing wollastonite in concrete as a replacement of cement: impact of carbonation and pore structure evaluation using EIS

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