The use of Wollastonite to enhance the mechanical properties of mortar mixes

Wahab, Mona Abdel; Latif, Ibrahim Abdel; Kohail, Mohamed; Almasry, Amira

doi:10.1016/j.conbuildmat.2017.07.005

Cited by 66 publications

(13 citation statements)

References 13 publications

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“…In the last decade, CaSiO 3 has been investigated for its ability to adsorb heavy metallic ions, e.g., Pb +2 , Cr +6 or Ni +2 [4,5,6]. Most recently, wollastonite has become suitable for reinforcing composites [7,8] and as a bone substitute in orthopedic applications owing to its bioactive properties [9,10]. Different methods are currently known for the production of synthetic wollastonite from various sources of calcium and silicon, e.g., synthesis via solidstate reaction [11,12], sol-gel method [13,14], hydrothermal synthesis [15], chemical precipitation [16,17], among others.…”

Section: Introductionmentioning

confidence: 99%

Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior

Casas-Luna

Torres-Rodríguez

Valdés-Martínez

et al. 2020

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior

Casas-Luna

Torres-Rodríguez

Valdés-Martínez

et al. 2020

Ceramics International

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“…The combination of 15% wollastonite+7.5% microsilica also showed higher strength than the control mix. In a study in which wollastonite was used instead of both sand and cement, 10%, 20% and 30% wollastonite were used instead of sand and cement, thus forming seven mixtures including the control mixture [ 37 ]. The initial setting time increased by using wollastonite, but this increase had a negligible effect on cement replacement.…”

Section: Cement Paste and Mortarmentioning

confidence: 99%

“…In addition, the mechanical properties of the 12% and 15% replacement mixtures provided better results than the control mixture. Synthetic wollastonite fills the porous structure of cement and forms a more compact mortar [ 13 , 37 , 39 ]. When natural wollastonite and synthetic wollastonite are compared, according to Figure 3 , it is observed that the optimum dosage and rate of increase are higher for synthetic wollastonite.…”

Section: Cement Paste and Mortarmentioning

confidence: 99%

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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“…The increasing demand on concrete raises the alarm on the future availability of the natural aggregate resources for the coming generations, as natural aggregates were extracted by 28.6 gigatons in 2010 only and became the most extracted materials worldwide [7]. Many countries put a restriction and additional taxes on using virgin aggregate resources [8,9], so it becomes a crucial issue to find a suitable substitutional as a replacement of natural aggregate in concrete without affecting the concrete characteristics [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Water-Cooled and Air-Cooled Slag Aggregate in Concrete: A Solution to the Secular Economy

El-Tair

Bakheet

El-Feky

et al. 2020

Eng

Self Cite

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Aggregates are generally thought of as inert filler within a concrete mix, and a typical concrete mix is comprised of as much as 70–80% of them. They play an essential role in the properties of both fresh and hardened concrete. Nowadays, scientists are aiming to use waste materials, thereby replacing natural aggregates for economic and environmental considerations. This study investigates the effect of the utilization of steel slag by-product aggregates (air- and water-cooled slag) as concrete aggregates on the behavior characteristics of concrete. Various concrete mixtures, with different levels of replacement of slag aggregate (50, 75, and 100%), were conducted in order to find the optimum percentages to improve the microstructure and different properties of concrete (fresh and hardened). The results showed that increasing the fine aggregate replacement percentage led to a decrease in compressive strength values, in contrast with coarse aggregate replaced with slag aggregate. The steel slag aggregates showed potential to be used as replacement for natural aggregate with comparable compressive strength and acceptable workability.

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The use of Wollastonite to enhance the mechanical properties of mortar mixes

Cited by 66 publications

References 13 publications

Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior

Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior

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

Utilization of Water-Cooled and Air-Cooled Slag Aggregate in Concrete: A Solution to the Secular Economy

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