Potential of dolomite industrial waste as construction material: a review

Agrawal, Yash; Gupta, Trilok; Siddique, Salman; Sharma, Ravi Kumar

doi:10.1007/s41062-021-00570-5

Cited by 24 publications

(10 citation statements)

References 78 publications

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“…[48][49][50]. It was previously mentioned that the amount of SiO2 in QWF is comparable to fly ash, and its mineral phase composition is similar to mine tailings [51][52][53][54][55]. Hence, this would imply that QWF could also be a promising raw material for the synthesis of tobermorite and the fabrication of autoclaved concrete products.…”

Section: X-ray Diffraction Analysis (Xrd)mentioning

confidence: 92%

Combined Potential of Quarry Waste Fines and Eggshells for the Hydrothermal Synthesis of Tobermorite at Varying Cement Content

Saldia,

Bacosa,

Vegafria

et al. 2024

Sustainability

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Quarry waste fines and eggshells are unavoidable wastes which relentlessly contribute to environmental loads and pollution. Although many studies have suggested various methods for recycling, these wastes remain underutilized due to some technical constraints. In addition, no study has yet explored the possibility of combining quarry waste fines (QWF) and eggshell powder (ESP) for tobermorite synthesis. Tobermorite is the main component which primarily provides strength to autoclaved aerated concrete products. With this in mind, this study seeks to evaluate the potential of QWF-ESP mix at 10%, 15%, and 20% amounts of cement, respectively. The XRF, XRD, and TGA–DTA techniques were used to characterize the waste materials, while physical and mechanical property tests and XRD analysis were performed on the autoclaved samples. It was found that QWF contains 53.77% SiO2 and ESP contains 97.8% CaO which are key components for tobermorite synthesis. This study also revealed that the mixture with only 10% cement has the highest compressive strength among the QWF-ESP samples. Furthermore, the formation of tobermorite in the samples was confirmed through XRD analysis. Hence, the hydrothermal curing of QWF-ESP can be further developed to produce functional tobermorite-bearing materials.

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Section: X-ray Diffraction Analysis (Xrd)mentioning

confidence: 92%

Combined Potential of Quarry Waste Fines and Eggshells for the Hydrothermal Synthesis of Tobermorite at Varying Cement Content

Saldia,

Bacosa,

Vegafria

et al. 2024

Sustainability

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“…Another important feature of dolomite regarding its use for the construction of isolation barriers is its high mechanical strength, which has been confirmed by studies of dolomite as an additive to concrete mixtures [39,40]. This parameter is important when forming the isolation layer and giving it proper geomechanical properties.…”

Section: Introductionmentioning

confidence: 89%

The Effect of pH on Stability of an Isolation Barrier Made of Dolomite Post-Floatation Waste

Sobik-Szołtysek

2021

Minerals

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Dolomite post-floatation waste has been proposed as an alternative material for the construction of separation barriers. The aim of this study was to determine the effect of the pH of leaching solutions on the stability of such barriers. The present research included the determination of selected physical and chemical properties of waste, i.e., density, grain composition, and filtration coefficient. Column tests of leaching by solutions of different pH values modeling varying environmental conditions were performed. Selected ions were determined in the eluates. Grain analyses were carried out for the column material after leaching to determine the changes in grain composition of dolomite due to washing with leaching solutions. The determined value of the filtration coefficient is 6.52 × 10−9 m∙s−1, which confirms the impermeability of the waste. The material is fine-grained, with a grain diameter of d ≤ 200 µm. During leaching, a decrease in the content of the analyzed ions and the diameter of grains and their movement down the barrier, resulting in its sealing, was observed. The central part of all columns showed more grains with a diameter of 7 μm, which is probably due to secondary precipitation of CaSO4. Irrespective of the initial pH of the leaching solution, the reaction of all eluates obtained was slightly alkaline (pH 7.52–8.20). Dolomite post-floatation waste has properties that ensure the tightness and durability of the separation barrier, which, combined with its ability to alkalize solutions and the sealing process, ensures its effectiveness.

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“…Many researchers (Monzó et al [20], Cyr et al [21], Lin et al [22], Garcés et al [23], Cusidó et al [24], Agrawal et al [25], Baeza-Brotons et al [17], Lynn et al [26]) have suggested that SSA may be used as an addition in the production of building materials such as mortar, concrete, brick, asphalt paving mixes, aerated concrete, lightweight and heat-insulating material, ceramic tiles, eco-cement and for soil stabilization. However, preserving mineral resources by replacing them with reused/recycled waste needs to be evaluated in a holistic way, combining the practical assay with economic prosperity and human well-being with a healthy environment.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cement Replacement with Sewage Sludge Ash (SSA) on the Heat of Hydration of Cement Mortar

et al. 2022

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The amount of fly ash from the incineration of sewage sludge is increasing all over the world, and its utilization is becoming a serious environmental problem. In the study, a type of sewage sludge ash (SSA) collected directly from the municipal sewage treatment plant was used. Five levels of cement replacement (2.5%, 5%, 7.5%, 10% and 20%) and unchanged water-to-binder (w/b) ratio (0.55) were used. The purpose of the study was to evaluate the effect of sewage sludge ash (SSA) on the hydration heat process of cement mortars. The heat of the hydration of cement mortars was monitored by the isothermal calorimetric method for 7 days at 23 °C. The analysis of chemical composition and particle size distribution was performed on the tested material. The tests carried out have shown that SSA particles have irregular grain morphology and, taking into account the chemical composition consists mainly of oxides such as CaO, P2O5, SiO2 and Al2O3. The concentration of these compounds affects the hydration process of cement mortars doped with SSA. In turn, the content of selected heavy metals in the tested ash should not pose a threat to the environment. Calorimetric studies proved that the hydration process is influenced by the presence of SSA in cement mortars. The studies showed that the rate of heat generation decreased (especially in the initial setting period) with the increasing replacement of cement by SSA, which also reduced the amount of total heat compared to the control cement mortar. With increasing mass of the replacement of cement with SSA up to 20%, the 7-day compressive strength of the mortar samples decreases.

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Potential of dolomite industrial waste as construction material: a review

Cited by 24 publications

References 78 publications

Combined Potential of Quarry Waste Fines and Eggshells for the Hydrothermal Synthesis of Tobermorite at Varying Cement Content

Combined Potential of Quarry Waste Fines and Eggshells for the Hydrothermal Synthesis of Tobermorite at Varying Cement Content

The Effect of pH on Stability of an Isolation Barrier Made of Dolomite Post-Floatation Waste

Influence of Cement Replacement with Sewage Sludge Ash (SSA) on the Heat of Hydration of Cement Mortar

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