Use of Demorlished Concrete in Pavement

Kumar, Munesh; Jain, Sumesh

doi:10.31142/ijtsrd2369

Cited by 4 publications

(3 citation statements)

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“…The efficiency of the inhibitor depends on the environment, in which it acts, the nature of the metal surface, and the structure of inhibitor itself [18][19][20][21]. Schiff bases of thiourea and thiosemicarbazide have been widely studied in past years due to their excellent corrosion inhibition efficiency for metals in acid media [22][23][24][25][26][27][28][29][30][31]. The Schiff bases of thiourea (BDHNPMTU) and thiosemicarbazide (DHNPMHC) are nontoxic, relatively cheap and easy to produce at high purity.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Inhibitive Effects of Some New Schiff Bases on Copper Corrosion in Acidic Medium

Kumar

Swami

2022

JASR

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In this research two new Schiff bases N,N'-bis[(3,4-dihydroxy-5-nitrophenyl)methylidene]thiourea (BDHNPMTU) and 2-[(3,4-dihydroxy-5-nitrophenyl)methylidene]hydrazine-1-carbothioamide (DHNPMHC) were synthesized by condensation of 3,4-dihydroxcy-5-nitro-benzaldehyde with Thiourea and Thiosemicarbazide. The structures of Schiff bases were fully characterized by elemental analysis, FT-IR and UV–Vis methods. The inhibitive effects of two Schiff bases BDHNPMTU and DHNPMHC towards the corrosion on copper in 0.5M HCl were investigated using weight loss measurement technique. Surface morphology of metal surface in presence and absence of inhibitors were studied by scanning electron microscope (SEM). Results show that both BDHNPMTU and DHNPMHC are an effective inhibitor for copper corrosion in 0.5 M HCl solution. It was found that inhibition efficiency increases with increasing concentration of inhibitor. Adsorption of the inhibitor on the copper surface followed Langmuir adsorption isotherm. SEM study also support the inhibition of corrosion of copper. BDHNPMTU and DHNPMHC show maximum inhibition efficiency i.e. 96% and 95.83% at highest concentration of inhibitor (5X10-5M). The order of inhibition efficiency of the two Schiff’s bases for Cu metal are BDHNPMTU>DHNPMHC.

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Section: Introductionmentioning

confidence: 99%

A Comparative Study of Inhibitive Effects of Some New Schiff Bases on Copper Corrosion in Acidic Medium

Kumar

Swami

2022

JASR

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“…Certain benefits of solid or concrete pavement are 15-20 percent, even less fuel usage than asphalt road, saving 10 percent electrical energy in lane avenue illumination, saving 40 percent total stone pavement [4]. The lifestyle time expense of rigid or concrete paving is 10-15 percent lower than bituminous paving over a twodecade span [11]. Nevertheless, concrete pavement is typically less preferred in developed Asian countries because of its high initial building cost, which is around 15 percent more than bituminous paving.…”

Section: Introductionmentioning

confidence: 99%

Reuse of improved recycled concrete aggregates (RCA) for sustainable and environmental-friendly construction materials.

Alyaseen¹,

Shah²,

Solanki³

et al. 2021

Preprint

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Recycled aggregates have an essential role in constructing construction activities today to save natural aggregates because of industrial development. The research aims to assess the suitability of recycled aggregates for the construction of new roads, which will help achieve road construction efficiency and help prevent environmental deterioration in the extraction and reducing pollution. In contrast with natural aggregates, recycled aggregates are of lower quality, mainly due to the cement mortar's brittle nature attached to them. The point of the study is to increase the performance of RCAs in an environmentally friendly managing RCAs. In this process, RCAs are first soaked in acetic acid solution, in which acetic acid reacts with cement attached to the surface of the RCA. This reaction weakens the attached mortar and allows separating from the RCAs by using mechanical friction later. Treated RCAs have lower water absorption and more insufficient cement mortar adhesion. These RCAs used as aggregates in new the concrete increased the compressive strength, the tensile strength, and the concrete's flexural strength by 26%, 11%, and 26% at 28 days, respectively. It is clean, safe, efficient, and a new method to be applied, so no harmful products are used, and no dangerous substances are incorporated into the RCAs that are being treated. The waste treatment solution was used as a supplementary admixture construction, increasing the concrete's strength, and decreasing its environmental effects.

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“…The Govt. Policies and programs like NCAP 2016 on UDAN have really revolutionized the Aviation sector and has brought common man on board to travel by Air, India may become largest Air become largest Air transport market in year 2030.A report stated that merger of airlines increases the size and profitability(Kumar & Vijai, 2017). The variable component is quite low compared to fixed one i.e capital cost is more than the variables one.…”

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confidence: 99%

Analytical Review for Competitiveness of LGBI Airport Guwahati in Terms of Aircraft and Passenger Movement for Long-Term Viability

Kumar¹,

Gupta²,

Changkakati³

et al. 2023

J. Professional Business Review

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Purpose: This paper aims to analyze the profitability and future viability of LGBI Airport Guwahati in terms of sources of revenue from traffic & non-traffic modes by identifying the factors that influence the traffic (aeronautical) revenue and non-tariff (non aeronautical) revenue. Theoretical Framework: The study followed economical concepts related to traffic and non-traffic assets that exist on an airport. The theoretical framework reveals the revenue model. It is essential to declare the profitability and competitiveness of an Airport whether operating under single till approach or Dual till approach or hybrid one. Design/Methodology/Approach: The systematic literature review is based on an exploratory research design following a quantitative study, from a list of 12-15 research and review papers relevant to the purpose of the study. The data extraction from the sorted literature is done through linear regression using SPSS software. Research, Practical & Social Implication: Certain initiatives may directly influence Non-Aero income. Except for significant airports like DIAL, MIAL, BIAL, and HIAL, the ratio of traffic to non-traffic income at Indian airports is 25/75.Also the implications drawn from this study would help the airport managers to develop innovative strategies to improve the revenues via both, traffic and non-traffic modes. Findings: The researcher used Factor analysis, Linear regression and Principal component analysis. The analysis identified negative and positive factors that affect tariff and non-tariff revenues separately.Regression analysis revealed significant determinants that have influence on the profitability..Using the results, managing the variables to maximize total income and controlling variables may increase income. Originality/Value: This academic article is a research work highlighting the comprehensive revenue sources in the LGBI airport, Guwahati.

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Use of Demorlished Concrete in Pavement

Cited by 4 publications

References 0 publications

A Comparative Study of Inhibitive Effects of Some New Schiff Bases on Copper Corrosion in Acidic Medium

A Comparative Study of Inhibitive Effects of Some New Schiff Bases on Copper Corrosion in Acidic Medium

Reuse of improved recycled concrete aggregates (RCA) for sustainable and environmental-friendly construction materials.

Analytical Review for Competitiveness of LGBI Airport Guwahati in Terms of Aircraft and Passenger Movement for Long-Term Viability

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