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A Judicious use of natural resources achieved by the use of by-products and recyclable materials and a lower environmental impact achieved through reduced natural aggregate extraction. The above concerns, combined with issues of preserving areas of beauty, recreational value and biodiversity, are an integral part of the process of most local govern...
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Citations
... Nevertheless, with the progression of curing age, there is an increase in compressive strength despite the initial decrease observed at higher replacement levels. [7,8]. The compressive strength of concrete exhibits an increasing trend as natural sand is replaced with waste plastics, up to a 50% replacement level with an introduction of 2 to 6% waste plastics. ...
The aim of this study is to investigate the potential of quarry dust and waste plastic as replacements for conventional sand in concrete, with a focus on sustainability. Sustainable utilization involves maximizing the effectiveness of quarry dust while minimizing environmental impact. Concrete mixes were prepared using ordinary river sand and varying percentages of quarry dust in combination with waste plastic. Notably, the inclusion of quarry dust with waste plastic significantly improved the concrete's strength. Regression analysis, conducted using SPSS software, was employed to predict the compressive strength of the concrete at different curing durations (7, 14, 28, and 90 days). The analysis revealed strong correlations between the variables, enabling the development of predictive models. These models were validated, and the results demonstrated that the addition of quarry dust, alongside waste plastic, positively influences the mechanical properties of concrete. Overall, this study highlights the efficacy of SPSS software in analyzing and predicting concrete strength, thus contributing to the advancement of sustainable construction practices.
... According to research, concrete's mechanical qualities were enhanced when superplasticizers were combined with QD and waste plastic as a filler [62]. The use of QD in lieu of sand while producing concrete was also investigated. ...
... Tensile Strength: Data Source[62]. ...
Concrete mechanical properties could be improved through adding different materials at the mixing stage. Quarry dust (QD) is the waste produced by manufactured sand machines and comprise approximately 30–40% of the total quantity of QD generated. When it dries, it transforms into a fine dust that poses a tremendous hazard to the environment by contaminating the soil and water and seriously endangering human health. QD utilization in concrete is one of the best options. Though a lot of scholars focus on imitation of QD in concrete, knowledge is scattered, and a detailed review is required. This review collects the information regarding QD-based concrete, including fresh properties, strength, durability, and microstructure analysis. The results indicate that QD is suitable for concrete to a certain extent, but higher percentages adversely affect properties of concrete due to absence of fluidity. The review also indicates that up to 40–50% substitution of QD as a fine aggregate can be utilized in concrete with no harmful effects on strength and durability. Furthermore, although QD possesses cementitious properties and can be used as cement substitute to some extent, less research has explored this area.
... Ukpata and Ephraim [14] demonstrated that concrete containing mixtures of lateritic sand and FCAs can be reasonably used in concrete manufacturing. Furthermore, Bahoria et al. [15] reported that quarry dust in addition to waste plastic as filler improved the mechanical properties of concrete when used along with superplasticizers. Franklin et al. [16] reported that a 40% replacement of fine aggregates with stone dust improved the compressive strength as compared with the reference concrete. ...
This paper presents the fresh and hardened properties of high-strength concrete comprising byproduct fine crushed aggregates (FCAs) sourced from the crushing of three different types of rocks, namely granophyre, basalt, and granite. The lowest void contents of the combined fine aggregates were observed when 40% to 60% of natural sand is replaced by the FCAs. By the replacement of 40% FCAs, the slump and bleeding of concrete with a water-to-cement ratio of 0.45 decreased by approximately 15% and 50%, respectively, owing to the relatively high fines content of the FCAs. The 28 d compressive strength of concrete was 50 MPa when 40% FCAs were used. The slight decrease in tensile strength from the FCAs is attributed to the flakiness of the particles. The correlations between the splitting tensile and compressive strengths of normal concrete provided in the AS 3600 and ACI 318 design standards are applicable for concrete using the FCAs as partial replacement of sand. The maximum 56 d drying shrinkage is 520 microstrains, which is significantly less than the recommended limit of 1000 microstrains by AS 3600 for concrete. Therefore, the use of these byproduct FCAs can be considered as a sustainable alternative option for the production of high-strength green concrete.
... Ukpata and Ephraim [14] demonstrated that concrete containing mixtures of lateritic sand and FCAs can be reasonably used in concrete manufacturing. Furthermore, Bahoria et al. [15] reported that quarry dust in addition to waste plastic as filler improved the mechanical properties of concrete when used along with superplasticizers. Franklin et al. [16] reported that a 40% replacement of fine aggregates with stone dust improved the compressive strength as compared with the reference concrete. ...
This paper presents the fresh and hardened properties of high strength concrete using byproduct fine crushed aggregates (FCA) sourced from the crushing of three different types of rocks, namely Granophyre, Basalt and Granite. The lowest void contents of the combined fine aggregate were observed between 40% to 60% replacement of natural sand by the FCAs. Fine aggregate replacement of 40% FCAs, slump and bleeding of concrete with a water to cement ratio of 0.45 decreased by about 15% and 50%, respectively, which is attributed to the relatively high fines content of FCA. The 28-day compressive strength of concrete was 50 MPa for using 40% FCAs. The small decrease of tensile strength for using FCAs is attributed to the flakiness of the particles. The correlations between splitting tensile strength and compressive strength of normal concrete given in the AS3600 and ACI318 design standards are found applicable for concrete using the FCAs as partial replacement of sand. The maximum 56-day drying shrinkage was 520 microstrain, which is well below the recommended limit of 1000 microstrain by AS3600 for concrete. Therefore, utilization of these by-product FCAs can be considered as a sustainable alternative option for the production of high strength green concrete.
Keywords: Fine crushed aggregates, quarry dust; compressive strength; splitting tensile strength; drying shrinkage
... (Zainab Z. Ismail, Enas A. AL-Hashmi, 2007) [5]. The study carried out by B.V.Bahoria, D.K.Parbat (2013) [1], [2], [3], [4] on M20 concrete revealed that the optimum modifier content as 6% the strength was found to be comparable with the conventional concrete. From the test results it was observed that the compressive strength value of the concrete mix increased with the addition of quarry dust and waste plastic fibers as modifier. ...
The successful research and development of a new building material, or component using wastes as raw materials, is a very complex and multidisciplinary task, having technical, environmental, financial, marketing, legal and social aspects. The utilization of such materials in concrete not only makes it economical, but also helps in reducing disposal concerns. One such by-product is Quarry dust and the disposal problems laid by waste plastics (ldpe). In this study emphasis was made on the feasibility of usage of quarry dust as a replacement of natural sand along with waste plastic as filler in concrete. In this study Matrix densification has been studied qualitatively through petro graphical examination using digital optical microscopy. The materials were studied using XRD for natural sand, quarry dust and waste LDPE. This research has been motivated by the economic and environmental concerns over the disposal of wastes with the costs of traditional engineering materials.
... (Zainab Z. Ismail, Enas A. AL-Hashmi, 2007) [5]. The study carried out by B.V.Bahoria, D.K.Parbat (2013) [1], [2], [3], [4] on M20 concrete revealed that the optimum modifier content as 6% the strength was found to be comparable with the conventional concrete. From the test results it was observed that the compressive strength value of the concrete mix increased with the addition of quarry dust and waste plastic fibers as modifier. ...
The scope of this study is to enhance the industry understanding the sustainable utilization of quarry dust, and to identify any gaps in current knowledge. The term sustainable utilization implies the use of quarry dust to their full potential to meet the needs of the present, while at the same time conserving natural resources and finding ways to minimize the environmental impacts associated both with quarry fines production and use. The addition of fine quarry dust with ldpe as waste plastic in concrete resulted in improved matrix densification compared to conventional concrete. Matrix densification has been studied qualitatively through petro graphical examination using digital optical microscopy. The materials were studied using XRD, SEM, E-DAX for natural sand, quarry dust and waste LDPE. This research has been motivated by the economic and environmental concerns over the disposal of wastes with the costs of traditional engineering materials.
The scope of this study is to enhance the industry understanding of the sustainable utilization of quarry dust, and to identify any gaps in current knowledge. The term sustainable utilization implies the use of quarry dust to their full potential to meet the needs of the present, while at the same time conserving natural resources and finding ways to minimize the environmental impacts associated both with quarry fines production and use. Concrete mixes were casted using ordinary river sand and compared with 25%,50%,75%, 100% replacement with quarry dust in combination with waste plastic in fabriform. . The addition of quarry dust along with waste plastic significantly improved the concrete matrix properties in terms of strength. Regression analysis and validation of the models developed was done to co-relate the results of compressive strength for 7, 14, 28, 90 days .The addition of fine quarry dust with ldpe as waste plastic in concrete resulted in improved matrix densification compared to conventional concrete. Matrix densification has been studied qualitatively through petro graphical examination using digital optical microscopy. The structure was evaluated using XRD and SEM in quarry dust and ldpe composites.
