Gravel wash mud, a quarry waste material as supplementary cementitious material (SCM)

Thapa, Vishojit Bahadur; Waldmann, Danièle; Simon, Claude

doi:10.1016/j.cemconres.2019.105833

Cited by 30 publications

(15 citation statements)

References 65 publications

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“…Almost any type of mud can be used for construction once all the properties are tested and validated and the required ingredients added. Recently investigated mud materials include gravel wash muds (GWM) [ 11 , 12 ] and waste mud from gravel quarries. These refer to wet deposits that are generated during the extraction of gravel and the gravel aggregates in addition to sand washing.…”

Section: Introductionmentioning

confidence: 99%

Mud-Based Construction Material: Promising Properties of French Gravel Wash Mud Mixed with Byproducts, Seashells and Fly Ash as a Binder

et al. 2021

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The French gravel industry produces approximatively 6.5 million tons of gravel wash mud each year. This material offers very promising properties which require an in-depth characterization study before its use as a construction material, otherwise it is removed from value cycles by disposal in landfills. We examined the suitability of gravel wash mud and seashells, with fly ash as a binder, as an unfired earth construction material. Thermal and mechanical characterizations of the smart mixture composed of gravel wash mud, Crepidula fornicata shells and fly ash are performed. The new specimens exhibit high compressive strengths compared to usual earth construction materials, which appears as a good opportunity for a reduction in the thickness of walls. The use of fly ash and Crepidula shells in addition to gravel wash mud provides high silica and calcium contents, which both react with clay, leading to the formation of tobermorite and Al-tobermorite as a result of a pozzolanic reaction. Considering the reduction in porosity and improvements in strength, these new materials are good candidates to contribute significantly to the Sustainable Development Goals (SDGs) and reduce carbon emissions.

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Section: Introductionmentioning

confidence: 99%

Mud-Based Construction Material: Promising Properties of French Gravel Wash Mud Mixed with Byproducts, Seashells and Fly Ash as a Binder

et al. 2021

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“…Furthermore, it is noteworthy that the only sample that had a NGS was M3 at 28 days (6.41%), a value that is corroborated with Figure 14. However, additional to the propose of the authors, 29 it can be said that M3 also presents a RGS of around 26.41% since the proposed methodology visually underestimates the results of NGS obtained.…”

Section: Resultsmentioning

confidence: 66%

“…This was done in order to obtain a better understanding of the impact of the SCS when a certain percentage of cement is replaced by waste sample. So, if the SAI obtained is equal to or >100%, the authors 29 indicate a net gain in strength (NGS) while if the SAI is <100%, an arithmetic operation described in Figure 2 is performed to find out if there is a relative gain in strength (RGS; when the RSI is greater than or equal to 0%) or if, on the contrary, there is a relative loss in strength (RLS; RSI <0%).…”

Section: Resultsmentioning

confidence: 99%

“…On the contrary, in addition to the evaluation of pozzolanic activity by means of the SAI, the results obtained were also evaluated as have done by researchers at the University of Luxembourg 29 . The authors propose a relative strength index (RSI) in which SAI results are considered and corrected according to the percentage of cement substitution by study material that has been used (Figure 2).…”

Section: Methodsmentioning

confidence: 99%

“…Muds used as SCM from gravel washing has been reported by Thapa et al, 29 who evaluated the pozzolanicity of the waste from a red sandstone after being calcined between 750 and 950ºC; the waste had special characteristics as being very fine (7‐9 µm) and low content of clay minerals (approximately 24.5%). They found that this waste had a good pozzolanic behavior measured through the strength‐based evaluation method, up to a substitution of 20%.…”

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

Valorization of waste from sand wash muds of an aggregates plant: Evaluation as a supplementary cementitious material

Baena

Cabrera-Poloche

Tobón

et al. 2020

Int J Applied Ceramic Tech

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The reuse and reincorporation of waste generated in the production processes are becoming increasingly important in the world, due to the double effect that it has in terms of sustainability. The first one is the environmental factor, since the impact generated is reduced by reducing the amount of wastes. The second one is the financial factor, since new products are developed that companies did not initially have, generating financial profitability. Therefore, this research evaluates the possible reuse of waste from gravel and sand wash mud of an aggregate plant as a supplementary cementitious material (SCM) after being thermally activated, seeking to promote the circular economy in the construction materials sector. The physical, chemical, and mineralogical characterization of the waste is presented and its pozzolanic activity was evaluated by means of the SAI-strength activity index. It was found that despite its low content of clay minerals, the thermally activated waste had very good performance as SCM with SAI between 81 and 106 with a tendency to increase with the age of cure. Showing that this can be a very promising potential use for this kind of waste.

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Prediction of compressive strength of mortar with copper slag addition by using artificial neural network

Yan

Sun

Zhao

et al. 2022

Structural Concrete

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Copper slag (CS), an industrial by-product, can be used as supplementary cementitious materials in the mortar to achieve sustainable development of the copper and the cement industries. However, available evaluation and prediction models for CS cementitious material considering the comprehensive effect of multiple factors are very scarce. In this study, a reliable experimental database with 141 sets of data was developed via compressive strength tests and reviews of the literature at first. Subsequently, the gray correlation analysis was performed to evaluate the correlation between the influencing factors and the compressive strength of mortar with CS addition. The results demonstrated that the strength was most sensitive to the water to binder ratio and CS chemical composition, which could not be ignored to compare and evaluate the strength acquired from different works. Besides, for the same batch CS used in this study, the compressive strength at 3 d depended on the curing program; while it was more easily affected by the CS fineness after 28 d. Finally, a reliable prediction model for the compressive strength of the mortar with CS addition was implemented by the back-propagation neural network. The established network with four neurons in the hidden layer had a high accuracy as well as a good generalization ability, which can be used as an effective tool for detecting trends of the compressive strength and designing CS-added mortar with a user-defined compressive strength.

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Gravel wash mud, a quarry waste material as supplementary cementitious material (SCM)

Cited by 30 publications

References 65 publications

Mud-Based Construction Material: Promising Properties of French Gravel Wash Mud Mixed with Byproducts, Seashells and Fly Ash as a Binder

Mud-Based Construction Material: Promising Properties of French Gravel Wash Mud Mixed with Byproducts, Seashells and Fly Ash as a Binder

Valorization of waste from sand wash muds of an aggregates plant: Evaluation as a supplementary cementitious material

Prediction of compressive strength of mortar with copper slag addition by using artificial neural network

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