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Author

G. Mohan Ganesh

Bio: G. Mohan Ganesh is an academic researcher from VIT University. The author has contributed to research in topic(s): Silica fume & Metakaolin. The author has an hindex of 1, co-authored 4 publication(s) receiving 5 citation(s).

Papers
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Book ChapterDOI
19 Feb 2020
Abstract: Self-Compacting Concrete (SCC) is a special type of concrete recognized for placing in congested reinforced structures without any application of external vibration. Self compactibility can be determined by the properties of material constituents and the design of mix proportions. The absence of an approved code in India on mix design proportions and characteristics of material constituents to achieve compactibility in SCC has necessitated to determine a method for mix design of SCC. Though some researchers have carried out investigations to determine a proper mix design for producing SCC. In this investigation, the optimization of mix proportion design has been determined by adopting the proposed rational mix design method or Japanese method with necessary modifications in consonance with the guidelines of EFNARC. A suitable mix using the marginal aggregates was selected and numerous trial mixes (sixty-five) were carried out with the varying mix parameters like binder content, water-binder ratio, fine aggregate-coarse aggregate ratio, percentage of superplasticizer and viscosity modifying admixtures. The test results of this study are presented in this paper and a successful attempt has been made to determine the suitable mix design for producing SCC.

2 citations

DOI
01 Jan 2020
Abstract: In recent years, concrete has become an important versatile construction material. This paper evaluates the strength obtained by concrete with the influence of bacteria. The bacterial strains were isolated from calcareous sludge and urea ware house. The bacterial strains were identified through 16srRNA gene sequencing as Bacillus pumilus and Bacillus flexus. Using these strains, an experiment on cylinder and prisms cast was performed. Compressive strength, split tensile and flexural tests were conducted at the age of 7, 28 and 56 days with ultrasonic pulse velocity and rebound hammer. The results were compared with Bacillus cohnii MTCC 3616 obtained from microbial type culture collection and gene bank, Chandigarh, India. Based on the experimental results, the improvement in the mechanical strength is due to the deposition of calcite crystals on the bacterial cell surfaces within the pores which enhanced the strength of concrete and reduced porosity and permeability.

1 citations

Journal ArticleDOI
Abstract: The development of Self-compacting concrete (SCC) was initiated in Japan in late 1980. SCC is understood for its self-consolidation and flows through narrow spaces in the formwork and does not require external vibration which has enhanced its acknowledgment over normal concrete, thus increasing the interest of researchers to focus on this building and construction material. A lot of research on SCC has been done in Japan, Turkey, Iran, United Kingdom, Algeria, Thailand, Malaysia, and India. Common industrial materials such as Limestone Powder (LP), Metakaolin (MK), Fly Ash (FA), Silica Fume (SF) and Granulated Blast Furnace Slag (GBFS) have been used to increase the efficiency of SCC. There are also numerous options on recycle materials which can be utilized for the development of SCC. This paper focusses on the use of pozzolanic material like Metakaolin (MK) as a mineral admixture and non-pozzolanic material like Waste Marble Powder (WMP) as a filler material. Both types of materials have a positive effect on the fresh, hardened and durability state of SCC. The use of MK plays an important role in decreasing the environmental pollution by way of lesser carbon dioxide emissions. The use of WMP reduces the segregation, bleeding and cost of production of SCC. Therefore, this paper containing the valuable and significant information can provide a platform for the new researchers for future investigations on SCC.

1 citations


Cited by
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Journal ArticleDOI
Abstract: The development of Self-compacting concrete (SCC) was initiated in Japan in late 1980. SCC is understood for its self-consolidation and flows through narrow spaces in the formwork and does not require external vibration which has enhanced its acknowledgment over normal concrete, thus increasing the interest of researchers to focus on this building and construction material. A lot of research on SCC has been done in Japan, Turkey, Iran, United Kingdom, Algeria, Thailand, Malaysia, and India. Common industrial materials such as Limestone Powder (LP), Metakaolin (MK), Fly Ash (FA), Silica Fume (SF) and Granulated Blast Furnace Slag (GBFS) have been used to increase the efficiency of SCC. There are also numerous options on recycle materials which can be utilized for the development of SCC. This paper focusses on the use of pozzolanic material like Metakaolin (MK) as a mineral admixture and non-pozzolanic material like Waste Marble Powder (WMP) as a filler material. Both types of materials have a positive effect on the fresh, hardened and durability state of SCC. The use of MK plays an important role in decreasing the environmental pollution by way of lesser carbon dioxide emissions. The use of WMP reduces the segregation, bleeding and cost of production of SCC. Therefore, this paper containing the valuable and significant information can provide a platform for the new researchers for future investigations on SCC.

1 citations

Journal ArticleDOI
Abstract: When understanding the influence of concrete surface preparation on the effectiveness of CFRP reinforcement, the load capacity of high-performance, self-compacting, fibre-reinforced concrete (HPSCFRC) is crucial for it efficiency. In this studies, few factors that have an influence on the stress–strain characteristic of concrete confined by CFRP laminates were examined. The method of surface preparation and the number of CFRP layers were considered as crucial parameters that have a significant impact on the characteristics of the load-bearing capacity of reinforced elements. Three different concrete surfaces were examined: grinded, sanded and unprepared. The morphology of each of the concrete surfaces was clearly, and the Abbott-Firestone profile material share curve was then extensively analyzed. During this research, 40 cylindrical concrete specimens were wrapped with one, two and three layers of CFRP, and then subjected to a uniaxial compressive test. The obtained results showed that the morphology of the concrete surface has a real impact on the load-bearing capacity of HPSCFRCreinforced with CFRP. Furthermore, the grinded concrete surface was characterized by the best cooperation with the composite reinforcement.