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

Zhao, Zengfeng; Duan, Zhenhua; Hubert, Julien; Grigoletto, Sophie; Courard, Luc

doi:10.1016/j.jobe.2022.104867

Cited by 8 publications

(6 citation statements)

References 54 publications

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“…Test results of water absorption rates of WBP-substituted mortars and concretes at the end of 28, 90, 150, and 240 days curing period are presented in Figure 4 . In Figure 4 , When the study of Zhao et al [ 85 ] on the water absorption of mortars is evaluated in Figure 4 , (in the 28-day samples) it is seen that the water absorption value decreases in the 10% substituted samples compared to the (0%) water absorption value of the reference mortar and that the water absorption value increases in the 5%, 25% and 50% substituted samples [ 85 ]. In a similar study, it was observed that in the samples produced with 0%, 50%, and 100% WBP substitution rates, the water absorption values of the samples with 50% and 100% substitution rates increased compared to the reference mortar water absorption values [ 73 ].…”

Section: Durability Propertiesmentioning

confidence: 99%

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Utilization of Recycled Brick Powder as Supplementary Cementitious Materials—A Comprehensive Review

Sallı Bideci,

Bideci,

Ashour

2024

Materials

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Over the past two decades, extensive research has been conducted to explore alternative supplementary cementitious materials (SCMs) in order to address the environmental concerns associated with the cement industry. Bricks, which are frequently preferred in the construction sector, generate a lot of waste during the production and demolition of existing buildings, requiring environmentally sustainable recycling practices. Therefore, many studies have been carried out in recent years on the use of brick waste as supplementary cementitious materials (SCMs) in cement mortar and concrete production. This critical review evaluates the impact of waste brick powder (WBP) on the mechanical and durability properties of mortar and concrete when used as a partial replacement for cement. It was observed that the properties of WBP-blended cement mortar or concrete depend on several factors, including WBP particle size, replacement ratio, pozzolanic activity, and mineralogical structure. The findings indicate that WBP with a particle size range of 100 µm to 25 µm, with a maximum cement replacement level of 10–20%, exhibits a positive impact on the compressive strength of both mortars and concretes. However, it is crucial to emphasize that a minimum curing duration of 28 days is imperative to facilitate the development of a pozzolanic reaction. This temporal requirement plays a vital role in realizing the optimal benefits of utilizing waste brick powder as a supplementary cementitious material in mortars and concretes.

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Section: Durability Propertiesmentioning

confidence: 99%

“… Water absorption values of WBP-admixed mortar and concrete (%) [ 24 , 36 , 48 , 73 , 77 , 85 , 86 , 87 , 88 ]. …”

Section: Figurementioning

confidence: 99%

Utilization of Recycled Brick Powder as Supplementary Cementitious Materials—A Comprehensive Review

Sallı Bideci,

Bideci,

Ashour

2024

Materials

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“…The lowest and highest densities of waste concrete were attributed to the specific gravity of the materials used. [29,70,89,90,95,100,102,103,105,108,111,114,116,117].…”

Section: Densitymentioning

confidence: 99%

“…Figure 7. Comparison of the density of rubberized concrete (R), glass concrete (G), and clay brick concrete (B)[29,70,89,90,95,100,102,103,105,108,111,114,116,117].…”

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confidence: 99%

The Use of Recycled Tire Rubber, Crushed Glass, and Crushed Clay Brick in Lightweight Concrete Production: A Review

et al. 2023

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Worldwide, vast amounts of waste are produced every year and most waste is sent directly to landfills or burnt, which has severe and harmful impacts on the environment. Recycling waste materials is considered the most visible solution to protect the environment. Using scraps in concrete production is a proper method for getting rid of wastes, improving the characteristics of concrete, reducing the consumption of natural aggregates, and can be used as cementitious materials that decrease cement production so that the CO2 that is produced during cement manufacturing decreases. This review paper summarizes the use of recycled waste materials, including rubber tires, crushed glass, and crushed clay brick in concrete, as a fractional replacement of aggregates, cement, etc., to develop eco-friendly lightweight construction materials. It has been concluded that the dry density of sustainable concrete decreased to 4, 21.7, and 31.7% when crushed glass, clay brick, and rubber tire were incorporated into the concrete instead of traditional aggregate, respectively. Waste rubber has good results in sulfate, thermal, and impact resistance, while glass powder and finely crushed clay brick helped to improve mechanical properties by increasing reach by 33% for glass and a slight increase for crushed clay brick, as well as thermal resistance compared to normal concrete. Moreover, due to the low particle density of these waste materials compared to that of normal-weight aggregates, these materials can be utilized efficiently to produce lightweight concrete for structural and non-structural applications such as road engineering, flooring for mounting machinery, highway and rail crash barriers, permeable pavement, interlocking bricks, insulation, filling concrete, and bearing walls.

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“…In recent years, SCM has been widely used because of its novel properties. It is widely used in bricklaying [ 1 ], plastering [ 2 ], repair [ 3 ], and building decorations [ 4 ]. The technological, economic, and environmental benefits of SCM have been widely demonstrated [ 5 , 6 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Hybrid BO-XGBoost and BO-RF Models for the Strength Prediction of Self-Compacting Mortars with Parametric Analysis

Ahmed,

Song,

Zhang

et al. 2023

Materials

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Self-compacting mortar (SCM) has superior workability and long-term durable performance compared to traditional mortar. The strength of SCM, including both its compressive and flexural strengths, is a crucial property that is determined by appropriate curing conditions and mix design parameters. In the context of materials science, predicting the strength of SCM is challenging because of multiple influencing factors. This study employed machine learning techniques to establish SCM strength prediction models. Based on ten different input parameters, the strength of SCM specimens were predicted using two different types of hybrid machine learning (HML) models, namely Extreme Gradient Boosting (XGBoost) and the Random Forest (RF) algorithm. HML models were trained and tested by experimental data from 320 test specimens. In addition, the Bayesian optimization method was utilized to fine tune the hyperparameters of the employed algorithms, and cross-validation was employed to partition the database into multiple folds for a more thorough exploration of the hyperparameter space while providing a more accurate assessment of the model’s predictive power. The results show that both HML models can successfully predict the SCM strength values with high accuracy, and the Bo-XGB model demonstrated higher accuracy (R2 = 0.96 for training and R2 = 0.91 for testing phases) for predicting flexural strength with low error. In terms of compressive strength prediction, the employed BO-RF model performed very well, with R2 = 0.96 for train and R2 = 0.88 testing stages with minor errors. Moreover, the SHAP algorithm, permutation importance and leave-one-out importance score were used for sensitivity analysis to explain the prediction process and interpret the governing input variable parameters of the proposed HML models. Finally, the outcomes of this study might be applied to guide the future mix design of SCM specimens.

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

Cited by 8 publications

References 54 publications

Utilization of Recycled Brick Powder as Supplementary Cementitious Materials—A Comprehensive Review

Utilization of Recycled Brick Powder as Supplementary Cementitious Materials—A Comprehensive Review

The Use of Recycled Tire Rubber, Crushed Glass, and Crushed Clay Brick in Lightweight Concrete Production: A Review

Hybrid BO-XGBoost and BO-RF Models for the Strength Prediction of Self-Compacting Mortars with Parametric Analysis

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