The Experts below are selected from a list of 6192 Experts worldwide ranked by ideXlab platform
Evi Aprianti S - One of the best experts on this subject based on the ideXlab platform.
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A huge number of artificial waste material can be supplementary cementitious material (SCM) for Concrete Production – a review part II
Journal of Cleaner Production, 2017Co-Authors: Evi Aprianti SAbstract:Concrete is heavily used as a construction material in modern society. With the growth in urbanization and industrialization, the demand for Concrete is increasing day by-days. Therefore, raw materials and natural resources are required in large quantities for Concrete Production worldwide. At the same time, a considerable quantity of industrial waste, agricultural waste and other types of solid material disposal are posing serious environmental issues. To minimize and reduce the negative impact of the Concrete industry through the explosive usage of raw materials, the use of artificial wastes as supplementary cementitious materials, the source of which are both reliable and suitable for alternative preventive solutions promotes the environmental sustainability of the industry. This paper reviews the possible use of industrial and agricultural wastes as a supplementary cementitious material in the Production of Concrete. It aims to exhibit the idea of utilizing these wastes by elaborating upon their engineering, physical and chemical properties. This provides a summary of the existing knowledge about the successful use of artificial wastes such as fly ash, slag, silica fume, rice husk ash, palm oil fuel ash, sugar cane bagasse ash, wood waste ash, bamboo leaf ash, and corn cob ash in the Concrete industry.
Evi Aprianti S - One of the best experts on this subject based on the ideXlab platform.
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a huge number of artificial waste material can be supplementary cementitious material scm for Concrete Production a review part ii
Journal of Cleaner Production, 2017Co-Authors: Evi Aprianti SAbstract:Abstract Concrete is heavily used as a construction material in modern society. With the growth in urbanization and industrialization, the demand for Concrete is increasing day by-days. Therefore, raw materials and natural resources are required in large quantities for Concrete Production worldwide. At the same time, a considerable quantity of industrial waste, agricultural waste and other types of solid material disposal are posing serious environmental issues. To minimize and reduce the negative impact of the Concrete industry through the explosive usage of raw materials, the use of artificial wastes as supplementary cementitious materials, the source of which are both reliable and suitable for alternative preventive solutions promotes the environmental sustainability of the industry. This paper reviews the possible use of industrial and agricultural wastes as a supplementary cementitious material in the Production of Concrete. It aims to exhibit the idea of utilizing these wastes by elaborating upon their engineering, physical and chemical properties. This provides a summary of the existing knowledge about the successful use of artificial wastes such as fly ash, slag, silica fume, rice husk ash, palm oil fuel ash, sugar cane bagasse ash, wood waste ash, bamboo leaf ash, and corn cob ash in the Concrete industry.
Hasan şahan Arel - One of the best experts on this subject based on the ideXlab platform.
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recyclability of waste marble in Concrete Production
Journal of Cleaner Production, 2016Co-Authors: Hasan şahan ArelAbstract:Abstract This review reports on the replacement of cement with waste marble and the use of waste marble as aggregate in Concrete Production. On the basis of the reviewed studies, it was observed that as the amount of marble powder used in place of fine aggregate increases, its workability decreases; however, this powder contributes to the compressive strength of Concrete because of CaCO 3 and SiO 2 present in the chemical structure of marble, while marble pieces used in place of coarse aggregate contribute to the workability and mechanical properties of Concrete. When natural standard sand is replaced with marble dust at a ratio of 15–75%, the compressive strength increases by 20–26% while the splitting tensile strength increases by 10–15%. However, coarse marble aggregates achieved the best results at a 100% replacement ratio. Moreover, waste marble in coarse aggregate form improves the mechanical properties over the dust form. Marble powder that is replaced with cement in quantities of 20% or more was determined to have adverse effects on the compressive strength and workability of Concrete. Besides affecting the mechanical properties of Concrete, marble dust at a cement-replacement ratio of 5–10% not only decreases the global annual CO 2 emissions by 12% but also lowers the costs from US$40/m 3 to US$33/m 3 . Based on the reviewed studies, mathematical equations quantifying the replacement of cement with marble dust and the use of dust aggregates are derived in this paper.
Magdalena Balintova - One of the best experts on this subject based on the ideXlab platform.
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Reservoir sediment as a secondary raw material in Concrete Production
Clean Technologies and Environmental Policy, 2015Co-Authors: Natalia Junakova, Jozef Junak, Magdalena BalintovaAbstract:This paper summarizes the physical and chemical properties of sediments dredged from the small water reservoir Klusov (Slovakia) and their potential use as a secondary raw material in Concrete Production. The effects of the sediment addition on the Concrete technological properties (compressive and flexural strength, freeze–thaw resistance) have been determined. Concrete specimens were pressed and cured for 2, 7, 28 and 365 days. Results show that progress of compressive strength of Concrete mixture, prepared from 20 wt% natural aggregate replacement by coarse-grained sediments, was similar to the control Concrete mixture. Specimens containing fine-grained sediment as a cement replacement, at a 40:60 sediment/cement weight ratio, achieved compressive strength values below 35 % in comparison to that of the previous mixtures. The flexural strengths of Concrete specimen prepared as a natural aggregate replacement were higher when compared to the reference mixture at all ages of hardening and have achieved a value of 6.59 MPa after 365 days of curing. Flexural strengths of the other samples were at about 4.0 MPa. All tested Concrete specimens resistant to freeze–thaw attack achieved frost resistance coefficient values above 0.85 according to the standard requirements. The weight loss values after 50 cycles of freeze–thaw testing were in range from 1.33 to 2.5 % and hence the standard requirement of maximum 5 % weight loss was also fulfilled. The results of the frost resistance coefficient and the weight loss after 50 cycles of freeze–thaw testing show that the tested Concrete specimens meet the standard requirements for frost-resistant Concrete class XF2.
Natalia Junakova - One of the best experts on this subject based on the ideXlab platform.
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Reservoir sediment as a secondary raw material in Concrete Production
Clean Technologies and Environmental Policy, 2015Co-Authors: Natalia Junakova, Jozef Junak, Magdalena BalintovaAbstract:This paper summarizes the physical and chemical properties of sediments dredged from the small water reservoir Klusov (Slovakia) and their potential use as a secondary raw material in Concrete Production. The effects of the sediment addition on the Concrete technological properties (compressive and flexural strength, freeze–thaw resistance) have been determined. Concrete specimens were pressed and cured for 2, 7, 28 and 365 days. Results show that progress of compressive strength of Concrete mixture, prepared from 20 wt% natural aggregate replacement by coarse-grained sediments, was similar to the control Concrete mixture. Specimens containing fine-grained sediment as a cement replacement, at a 40:60 sediment/cement weight ratio, achieved compressive strength values below 35 % in comparison to that of the previous mixtures. The flexural strengths of Concrete specimen prepared as a natural aggregate replacement were higher when compared to the reference mixture at all ages of hardening and have achieved a value of 6.59 MPa after 365 days of curing. Flexural strengths of the other samples were at about 4.0 MPa. All tested Concrete specimens resistant to freeze–thaw attack achieved frost resistance coefficient values above 0.85 according to the standard requirements. The weight loss values after 50 cycles of freeze–thaw testing were in range from 1.33 to 2.5 % and hence the standard requirement of maximum 5 % weight loss was also fulfilled. The results of the frost resistance coefficient and the weight loss after 50 cycles of freeze–thaw testing show that the tested Concrete specimens meet the standard requirements for frost-resistant Concrete class XF2.
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Beneficial Reuse of Reservoir Sediments in Concrete Production
Advanced Materials Research, 2015Co-Authors: Natalia Junakova, Jozef JunakAbstract:This research investigates the potential use of dredged reservoir sediments as a substitute of raw material in Concrete Production. The first objective is to determine the physical and chemical characteristics of dredged sediments. Based on these sediment characteristics, it appears appropriate to use them as a partial substitute for the natural aggregate in the Concrete Production. The research results show that Concrete mixtures prepared in weight ratio 20 % of coarse-grained sediments as a partial substitute of 0/4 natural aggregate fraction in Concrete to 80 % of natural aggregate reached even exceeded the compressive and flexural strengths after 2 and 7 of hardening to those measured in control Concrete mixture. After 28 days of hardening, the compressive strength in this mixture slightly decreased (34.44 MPa) in comparison with the control Concrete composite (38.30 MPa), while flexural strength measured in the mixture (5.41 MPa) was higher than in control Concrete composite (4.93 MPa).