Comparative study on mechanical properties of conventional and geo-polymer concrete with recycled coarse aggregate

Ojha, Avinash; Gupta, Lokesh

doi:10.1016/j.matpr.2020.04.811

Cited by 16 publications

(5 citation statements)

References 7 publications

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“…Its destruction mode is relatively brittle, but the carrying capacity is relatively strong. It should be noted that intermittent grading may lead to instability or difficulty to control of concrete properties [10] . The preparation process of single particle size graded concrete aggregate is relatively simple and low cost.…”

Section: Combined With the Test Results The Advantages And Disadvanta...mentioning

confidence: 99%

Comparative study on the mechanical properties of different graded concrete aggregate

2024

jmpd

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This paper aims to study the mechanical properties of different graded concrete aggregates and discuss the influence of graded concrete performance. Through the literature review, the research status of concrete aggregate gradation at home and abroad is summarized, and the shortcomings of the existing studies are summarized. On this basis, a variety of graded aggregates are selected to prepare concrete specimens, and their mechanical properties are tested, including compressive strength, folding strength and other indexes. The experimental results show that the mechanical properties of different graded concrete aggregate are significantly different, and the strength and deformation of graded matched concrete have important influence. Some graded types of concrete show high strength and stability, while others may decline. Through comparative analysis, this paper summarizes the advantages and disadvantages of various graded types, and puts forward suggestions to optimize the concrete aggregate grading. These suggestions help to more reasonably select and use concrete aggregate in practical engineering and improve the performance and quality of concrete. This study is of great significance for promoting the development and application of concrete technology, and also provides a valuable reference for future research.

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Section: Combined With the Test Results The Advantages And Disadvanta...mentioning

confidence: 99%

Comparative study on the mechanical properties of different graded concrete aggregate

2024

jmpd

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“…It was shown that the splitting tensile strength of geopolymer mortar could be improved by adding 2% NS [ 100 ]. Ojha and Avinash [ 101 ] explored the impact of using NA and RA on the mechanical properties at GPC. The results of splitting tensile strength are shown in Figure 14 .…”

Section: Mechanical Properties Of Gpracmentioning

confidence: 99%

Mechanical Properties and Durability of Geopolymer Recycled Aggregate Concrete: A Review

et al. 2023

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Geopolymer recycled aggregate concrete (GPRAC) is a new type of green material with broad application prospects by replacing ordinary Portland cement with geopolymer and natural aggregates with recycled aggregates. This paper summarizes the research about the mechanical properties, durability, and microscopic aspects of GPRAC. The reviewed contents include compressive strength, elastic modulus, flexural strength, splitting tensile strength, freeze–thaw resistance, abrasion resistance, sulfate corrosion resistance, and chloride penetration resistance. It is found that GPRAC can be made to work better by changing the curing temperature, using different precursor materials, adding fibers and nanoparticles, and setting optimal mix ratios. Among them, using multiple precursor materials in synergy tended to show better performance compared to a single precursor material. In addition, using modified recycled aggregates, the porosity and water absorption decreased by 18.97% and 25.33%, respectively, and the apparent density was similar to that of natural aggregates. The current results show that the performance of GPRAC can meet engineering requirements. In addition, compared with traditional concrete, the use of GPRAC can effectively reduce carbon emissions, energy loss, and environmental pollution, which is in line with the concept of green and low-carbon development in modern society. In general, GPRAC has good prospects and development space. This paper reviews the effects of factors such as recycled aggregate admixture and curing temperature on the performance of GPRAC, which helps to optimize the ratio design and curing conditions, as well as provide guidance for the application of recycled aggregate in geopolymer concrete, and also supply theoretical support for the subsequent application of GPRAC in practical engineering.

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“…However, additional research on the behavior of geopolymer bases with the use of various raw materials is essential. In another study, Ojha and Lokesh [193] explored the possibility A comparison was made between FA-based geopolymer concrete and conventional concrete materials for the base layer [149]. The compressive strength ranged from 10.3 to 34.9 MPa for all geopolymer samples cured for 7, 28, and 90 days.…”

Section: Pavementmentioning

confidence: 99%

“…However, additional research on the behavior of geopolymer bases with the use of various raw materials is essential. In another study, Ojha and Lokesh [193] explored the possibility of using recycled aggregates to prepare FA-based geopolymer concrete and tested it against conventional concrete. The results showed acceptable performance of the geopolymer concrete over conventional concrete.…”

Section: Pavementmentioning

confidence: 99%

Geopolymers: The Green Alternative to Traditional Materials for Engineering Applications

et al. 2023

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Researchers have been driven to investigate sustainable alternatives to cement production, such as geopolymers, due to the impact of global warming and climate change resulting from greenhouse gas emissions. Currently, they are exploring different methods and waste materials to enhance the mechanical and physical properties of geopolymer and expand its application range. This review paper offers a thorough analysis of the utilization of various waste materials in geopolymer manufacturing and shows the creative contribution of this research to the development of environmentally friendly cement substitutes. The article covers the properties, durability, and practical applications of geopolymer composites made from various waste binders. It includes a microstructure and chemical analysis. The research findings indicate that geopolymers are an effective cementitious binder substitute for cement in various applications. Additionally, the ecological and carbon footprint analysis highlights the sustainability of geopolymers compared to cement.

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Comparative study on mechanical properties of conventional and geo-polymer concrete with recycled coarse aggregate

Cited by 16 publications

References 7 publications

Comparative study on the mechanical properties of different graded concrete aggregate

Comparative study on the mechanical properties of different graded concrete aggregate

Mechanical Properties and Durability of Geopolymer Recycled Aggregate Concrete: A Review

Geopolymers: The Green Alternative to Traditional Materials for Engineering Applications

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