Recovery of Mineral Wool Waste and Recycled Aggregates for Use in the Manufacturing Processes of Masonry Mortars

Morón, Carlos; Dorado, Manuel Álvarez; Saíz, Pablo; Zaragoza-Benzal, Alicia

doi:10.3390/pr10050830

Cited by 4 publications

(4 citation statements)

References 54 publications

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“…The pellet hemp shown in Figure3chad an average diameter of 4.0 mm and a length between 1.0 and 2.0 cm.Finally, the water used for the mixing of the mortars was tap water from the Canal de Isabel II (Madrid, Spain). This is drinking water fit for human consumption and suitable for use in mortars and concretes[58], which has been successfully used in previous studies[59]. Among its main characteristics are its soft hardness (25 mg CaCO3/L) and neutral pH between 7 and 8[60] recommended to avoid setting alterations.…”

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confidence: 99%

Feasibility of Ecofriendly Mortars with Different Hemp Additions for Use in Building Sector

Ferrández,

Álvarez Dorado,

Zaragoza-Benzal

et al. 2023

Heritage

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Cement mortars are commonly used in building works for the execution of enclosures and exterior rehabilitation of facades. The incorporation of plant-based additives enables the development of ecofriendly construction materials. In this work, a physical and mechanical characterisation of cement mortars with the incorporation of hemp in three morphologies (fibre, powder and pellet) was conducted. The results show how the additions of hemp powder and pellets with a partial replacement of natural aggregate reduce the final density of cement mortars and their thermal conductivity by more than 16% and 19%, respectively. On the other hand, the addition of hemp fibres reduces shrinkage during the setting of cement mortars, improving their flexural strength and increasing their durability. For this reason, it is possible to recommend the use of these mortars with the addition of natural hemp fibres without prior surface treatment to improve the physical-mechanical properties of these construction materials and extend their application field as ecofriendly materials for masonry work.

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confidence: 99%

Feasibility of Ecofriendly Mortars with Different Hemp Additions for Use in Building Sector

Ferrández,

Álvarez Dorado,

Zaragoza-Benzal

et al. 2023

Heritage

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“…Moreover, excessive extraction of natural river sand has severely impacted the natural environment. Therefore, scholars in various countries have begun to study the use of manufactured sand instead of river sand to formulate concrete [ 1 , 2 , 3 , 4 , 5 ]. According to relevant statistical data, in the last decade, the proportion of artificial sand used in various engineering construction fields in China has been increasing year by year.…”

Section: Introductionmentioning

confidence: 99%

“…); sunzhenjiao@foxmail.com (Z.S. )2 School of Safety and Engineering, China University of Mining and Technology, Xuzhou 221116, China; hughie_ma@163.com * Correspondence: ma156154682@126.com; Tel. : +86-1515-441-9905…”

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confidence: 99%

Research on Compressive Strength of Manufactured Sand Concrete Based on Response Surface Methodology

Gao,

Sun,

et al. 2023

Materials

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Due to the impact of economic and social development on the environment, there is an increasing demand for manufactured sand to replace natural sand as fine aggregate for concrete. At the same time, the effect of admixtures on the rheological properties and compressive strength of concrete is crucial in civil engineering applications. In this study, with the Box–Behnken test model, we analyzed and investigated the impact of a composite admixture of stone powder (SP), pulverized fuel ash (PFA), and silicon fume (SF) on the compressive strength of siliceous manufactured sand concrete using response surface methodology (RSM). At the same time, the rheological properties of the siliceous artificial sand and river sand concrete were analyzed. The prediction of the compressive strength of siliceous artificial sand concrete was developed using multiple regression analysis, the factors of which were SP, PFA, and SF content, and the response value was compressive strength. Furthermore, response surface and contour lines were used to analyze the impact of composite admixtures. It is shown that the compounding of SP, PFA, and SF improve the rheological properties of manufactured sand concrete. For the single factor, SP has the greatest effect on the compressive strength of mechanism sand concrete and SF has the least effect. For compounding, SP and PFA have the most significant effect on the compressive strength of artificial sand shotcrete, and the compounding of PFA and SF have the least effect.

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“…For the production of ceramic bricks, mineral wool waste, glass waste, high alumina fly ash, and ceramic tile polishing waste are often chosen as a leaning agent [1][2]. Mineral wool waste is used as an additive to Portland cement [3], in the development of ceramic building materials [2], [3], [4], in the production of masonry mortar [5].…”

Section: Introductionmentioning

confidence: 99%

Study of clay raw materials with Korolek technogenic waste for the production of ceramic bricks

Kashetova,

Kozhas

2023

tbus

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The use of industrial waste in the production of building materials is an urgent task at present. Studies on the use of mineral wool waste in the manufacture of ceramic bricks have been carried out. For the preparation of experimental samples of ceramic bricks used clay deposit, as heaters and intensifiers of sintering – waste production of mineral wool. Chemical composition of investigated components is given. The study of mineralogical and phase composition of raw materials was carried out by petrographic, X-ray phase, IR-spectroscopic, electron-microscopic methods of analysis and DTA. During the experiment such properties of samples as cracking temperature; end shrinkage moisture; relative shrinkage; drying time to residual moisture content of 8%; mechanical strength in compression were tested. As a result of the tests, the influence of Korolek on the drying properties of ceramic samples was established. Thus, an increase in the content of Korolek in the samples, improved the crack resistance, relative shrinkage, drying time to residual moisture. The results of the research showed a non-linear dependence of physical and mechanical properties of the samples on the content of Korolek. The best values of mechanical strength were achieved when the Korolek content was 40% of the total mass of the manufactured sample. The proposed composition corresponds to the properties of ceramic bricks above grade M150-175.

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Recovery of Mineral Wool Waste and Recycled Aggregates for Use in the Manufacturing Processes of Masonry Mortars

Cited by 4 publications

References 54 publications

Feasibility of Ecofriendly Mortars with Different Hemp Additions for Use in Building Sector

Feasibility of Ecofriendly Mortars with Different Hemp Additions for Use in Building Sector

Research on Compressive Strength of Manufactured Sand Concrete Based on Response Surface Methodology

Study of clay raw materials with Korolek technogenic waste for the production of ceramic bricks

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