Substitution of limestone filler by waste brick powder in self-compacting mortars: Properties and durability

Zhao, Zengfeng; Grellier, Adèle; Bouarroudj, M. E.; Michel, Frédéric; Bulteel, D.; Courard, Luc

doi:10.1016/j.jobe.2021.102898

Cited by 15 publications

(18 citation statements)

References 41 publications

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“…Test results were alike, except the M-MF, which presented the lowest value (2.7%). Similar values were found by Zhao et al [ 28 ], studying the incorporation of ceramic filler in self-compacting mortars. Amaral et al [ 10 ] also found a decrease in air content when incorporating ornamental stone waste, attributed to the strong difference in density of substituted materials, as occurred in this research.…”

Section: Resultssupporting

confidence: 89%

“…In mortars made with ornamental rocks, pozzolanic activity was not found as in the reference mortar [ 46 ]. Despite the founding of the pozzolanic reaction when ceramic filler was incorporated [ 47 ], authors such as Zhao et al [ 28 ] obtained a decrease when incorporating ceramic filler in mortars, with respect to reference mix. Regardless of the absence of SiO 2 in RF, it has been reported that dolomite can reduce the nucleation barrier, enhancing the hydration process [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

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Performance of Sustainable Mortars Made with Filler from Different Construction By-Products

et al. 2022

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One way to contribute to sustainability in the construction sector is through the incorporation of construction by-products from their own activities. This work intends to extend the possibilities for enhancement of these by-products through the incorporation of four different ones, as fillers, in mortar production. The influence of these incorporations in mortar production was compared with a reference mortar with siliceous filler in its fresh state; workability, entrained air content and fresh density, and in its hardened state; capillary water absorption, water vapour permeability and shrinkage (up to 91 days); and adhesive, compressive, and flexural strength; the last two were studied over time (up to 180 days). Despite the reduction in compressive strength, both in the short and long term, there was a gain in adhesive strength when the construction by-products were incorporated. Regarding the physical properties and durability studied, no relevant differences were found with respect to the reference mortar. According to the European Specifications, these mortars could be used as regular or coloured rendering and plastering mortars, and masonry mortars, and these findings promote the circular economy in the construction sector.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Performance of Sustainable Mortars Made with Filler from Different Construction By-Products

et al. 2022

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“…Table 3 presents the experimental program and test methods used in this study. Detailed information on the experimental methods can be found in the previous work [52] and corresponding standards.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…After mixing, two tests were followed to determine the rheological property of mortar at a fresh state: a spreading (flow index) test and a rheometer method. The spreading of mortar at a fresh state was determined with the MBE cone [52]. Fundamental rheological characteristics were evaluated using a rheometer (Rheocad 400).…”

Section: Tests On the Mortars At Fresh Statementioning

confidence: 99%

Performance and durability of self-compacting mortar with recycled sand from crushed brick

Zhao¹,

Duan²,

Hubert³

et al. 2022

Journal of Building Engineering

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“…This leads to high disposal fees and severe secondary environmental pollution [ 16 , 17 ]. In the European Union, CDW production reached 868 million tons in 2014, accounting for 35% of all wastes generated by the EU [ 18 ]. The main components of CDW are concrete and brick.…”

Section: Introductionmentioning

confidence: 99%

Properties and Strength Prediction Modeling of Green Mortar with Brick Powder Subjected to a Short-Term Thermal Shock at Elevated Temperatures

et al. 2021

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The cement industry is responsible for 8% of global CO2 production. Therefore, a clear trend has been observed recently to replace to some extent the main binder of cement composites with environmentally friendly or recycled materials with a lower carbon footprint. This paper presents the effect of brick powder (BP) on the physico-chemical and mechanical properties of cement mortars. The effect of a short-term thermal shock on morphology and strength properties of green mortars was investigated. BP addition caused increase in porosity and decrease in compressive and flexural strength of mortars. The best results were obtained for samples with 5% wt. BP addition. Above this addition the strength decreased. The mechanical performance of the samples subjected to thermal loading increased compared to the reference samples, which is the result of a process called as the “internal autoclaving”. The BP addition positively affects the linear shrinkage, leading to its reduction. The lowest linear shrinkage value was achieved by the mortar with the highest BP addition. An intelligent modeling approach for the prediction of strength characteristics, depending on the ultrasonic pulse velocity (UPV) is also presented. To solve the model problem, a supervised machine-learning algorithm in the form of an SVM (support vector machines) regression approach was implemented in this paper. The results indicate that BP can be used as a cement replacement in cement mortars in limited amounts. The amount of the additive should be moderate and tuned to the features that mortars should have.

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Substitution of limestone filler by waste brick powder in self-compacting mortars: Properties and durability

Cited by 15 publications

References 41 publications

Performance of Sustainable Mortars Made with Filler from Different Construction By-Products

Performance of Sustainable Mortars Made with Filler from Different Construction By-Products

Performance and durability of self-compacting mortar with recycled sand from crushed brick

Properties and Strength Prediction Modeling of Green Mortar with Brick Powder Subjected to a Short-Term Thermal Shock at Elevated Temperatures

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