Impact Resistance of Polypropylene Fibre-Reinforced Alkali–Activated Copper Slag Concrete

Chakrawarthi, Vijayaprabha; Avudaiappan, Siva; Amran, Mugahed; Dharmar, Brindha; Jesuarulraj, Leon Raj; Fediuk, Roman; Aepuru, Radhamanohar; Vatin, Nikolai; Flores, Erick Saavedra

doi:10.3390/ma14247735

Cited by 22 publications

(11 citation statements)

References 58 publications

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“…The amalgamation of powder content for each concrete has a different effect on power consumption. In most cases, the combination of cement and fly ash consumes more power during the mixing process, while the combination of cement and GGBS consumes the least power [21,26,47,48]. When observing these three grades of concrete, it can be seen that the combination of powder content is another factor that affects power consumption.…”

Section: Resultsmentioning

confidence: 99%

“…There is a lack of knowledge concerning the new materials used in concrete manufacturing. The increase in HPC and SCC productivity provides an opportunity to use new materials in the concrete production industry [12,26,27]. Concrete manufacturers should pay attention to the characteristics and performance of new materials and use appropriate mixing times to obtain high-quality concrete.…”

Section: Importance Of Mixingmentioning

confidence: 99%

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Effects of Admixtures on Energy Consumption in the Process of Ready-Mixed Concrete Mixing

et al. 2022

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The production and utilization of concrete and concrete-based products have drastically increased with the surge of construction activities over the last decade, especially in countries such as China and India. Consequently, this has resulted in a corresponding increase in the energy used for the production of ready-mixed concrete. One approach to reduce the cost of concrete manufacturing is to reduce the energy required for the manufacturing process. The main hypothesis of this study is that the power required for mixing the concrete can be reduced through the use of mineral admixtures in the mix design. Optimization of energy consumption during mixing using admixtures in concrete manufacturing is the predominant focus of this article. To achieve this objective, power consumption data were measured and analyzed throughout the concrete mixing process. The power consumption curve is the only source to distinguish the behavior of the different materials used in the concrete in a closed chamber. In the current research, fly ash and ground granulated blast-furnace slag (GGBS) were used as mineral admixtures to produce ready-mixed concrete. The experimental study focused on the influence of GGBS and fly ash on power consumption during concrete mixing. The results indicated that the use of a higher content of GGBS is more beneficial in comparison to the use of fly ash in the mix due to the lower mixing time required to achieve homogeneity in the mixing process. It was found that the amount of energy required for mixing is directly related to the mixing time for the mix to achieve homogeneity.

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Section: Resultsmentioning

confidence: 99%

Section: Importance Of Mixingmentioning

confidence: 99%

Effects of Admixtures on Energy Consumption in the Process of Ready-Mixed Concrete Mixing

et al. 2022

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“…Thus, the analysis of the results suggests the possibility of using waste milled for 10 min as an active mineral additive, as well as to give better formability to the mixture and its micro-reinforcement to obtain fiber-reinforced concrete [ 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ]. The presence of quartz in the amorphous phase causes high solubility in saturated alkaline solutions of the hydrated binder and active interaction with Ca(OH) 2 released as a result of the hydration of clinker minerals.…”

Section: Resultsmentioning

confidence: 99%

Technogenic Fiber Wastes for Optimizing Concrete

et al. 2022

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A promising method of obtaining mineral fiber fillers for dry building mixtures is the processing of waste that comes from the production of technogenic fibrous materials (TFM). The novelty of the work lies in the fact that, for the first time, basalt production wastes were studied not only as reinforcing components, but also as binder ones involved in concrete structure formation. The purpose of the article is to study the physical and mechanical properties of waste technogenic fibrous materials as additives for optimizing the composition of raw concrete mixes. To assess the possibility of using wastes from the complex processing of TFM that were ground for 5 and 10 min as an active mineral additive to concrete, their chemical, mineralogical, and granulometric compositions, as well as the microstructure and physical and mechanical characteristics of the created concretes, were studied. It is established that the grinding of TFM for 10 min leads to the grinding of not only fibers, but also pellets, the fragments of which are noticeable in the total mass of the substance. The presence of quartz in the amorphous phase of TFM makes it possible to synthesize low-basic calcium silicate hydrates in a targeted manner. At 90 days age, at 10–20% of the content of TFM, the strength indicators increase (above 40 MPa), and at 30% of the additive content, they approach the values of the control composition without additives (above 35 MPa). For all ages, the ratio of flexural and compressive strengths is at the level of 0.2, which characterizes a high reinforcing effect. Analysis of the results suggests the possibility of using waste milled for 10 min as an active mineral additive, as well as to give better formability to the mixture and its micro-reinforcement to obtain fiber-reinforced concrete.

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“…The μ value shown in the figure is based on exposure to photons at a 0.662 MeV energy level. Additives such as silica fume [ 130 ], GGBS [ 131 , 132 , 133 , 134 ], rice husk ash [ 135 , 136 ], palm oil fuel ash [ 137 , 138 , 139 , 140 , 141 ], and fly ash [ 142 , 143 , 144 , 145 , 146 , 147 , 148 , 149 , 150 , 151 ] serve as a partial cement replacement, which aims to reduce the carbon footprint of concrete [ 152 , 153 , 154 , 155 , 156 , 157 ]. The 60% increase in the fly ash replacement for cement in concrete reduced the μ value by 10% [ 63 ].…”

Section: Radiation Shieldingmentioning

confidence: 99%

Recent Trends in Advanced Radiation Shielding Concrete for Construction of Facilities: Materials and Properties

et al. 2022

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Nuclear energy offers a wide range of applications, which include power generation, X-ray imaging, and non-destructive tests, in many economic sectors. However, such applications come with the risk of harmful radiation, thereby requiring shielding to prevent harmful effects on the surrounding environment and users. Concrete has long been used as part of structures in nuclear power plants, X-ray imaging rooms, and radioactive storage. The direction of recent research is headed toward concrete’s ability in attenuating harmful energy radiated from nuclear sources through various alterations to its composition. Radiation shielding concrete (RSC) is a composite-based concrete that was developed in the last few years with heavy natural aggregates such as magnetite or barites. RSC is deemed a superior alternative to many types of traditional normal concrete in terms of shielding against the harmful radiation, and being economical and moldable. Given the merits of RSCs, this article presents a comprehensive review on the subject, considering the classifications, alternative materials, design additives, and type of heavy aggregates used. This literature review also provides critical reviews on RSC performance in terms of radiation shielding characteristics, mechanical strength, and durability. In addition, this work extensively reviews the trends of development research toward a broad understanding of the application possibilities of RSC as an advanced concrete product for producing a robust and green concrete composite for the construction of radiation shielding facilities as a better solution for protection from sources of radiation. Furthermore, this critical review provides a view of the progress made on RSCs and proposes avenues for future research on this hotspot research topic.

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Impact Resistance of Polypropylene Fibre-Reinforced Alkali–Activated Copper Slag Concrete

Cited by 22 publications

References 58 publications

Effects of Admixtures on Energy Consumption in the Process of Ready-Mixed Concrete Mixing

Effects of Admixtures on Energy Consumption in the Process of Ready-Mixed Concrete Mixing

Technogenic Fiber Wastes for Optimizing Concrete

Recent Trends in Advanced Radiation Shielding Concrete for Construction of Facilities: Materials and Properties

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