iosr-JMCE   Volume-18 ~ Issue-4 ~ Jul. – Aug. 2021

Abstract: Recently, waste materials have been used in concrete manufacturing in order to get rid of these wastes that cause environmental problems, to reduce solid waste, and reuse it as much as possible. The aim of this research is to study the effect of partial replacement cement by waste materials (glass powder, recycled concrete and granite dust) on mechanical properties of concrete. Concrete specimens includes two partial replacement ratios (10%, 20%) of each type of these waste materials besides control mix (without replacement) were carried out. First, X-Ray Fluorescence (XRF) test for waste materials was performed. Tensile strength, flexural strength, heat resistance, and ultrasonic pulse velocity were performed at 28 days age of concrete specimens while compressive strength was performed at 7, and 28days ages......

Keywords: Glass powder; Recycled concrete; Granite dust; Mechanical properties; Concrete

[1]. K Al-Chaar, G., Alkadi, M., & Asteris, P. G. Natural pozzolan as a partial substitute for cement in concrete. The Open Construction and Building Technology Journal,2013, 7(1).
[2]. Rodrıguez-Camacho, R. E., & Uribe-Afif, R. Importance of using the natural pozzolans on concrete durability. Cement and Concrete Research, 2002, 32(12), 1851-1858.
[3]. Messaoudene, R. Jauberthie, A. Rechache, A. Bounechada, Strength development of ternary blended cement with marble powder and natural pozzolana, Cement Wapno Beton 1, 2015, 32–37.
[4]. Khmiri, A., Samet, B., & Chaabouni, M. Assessment of the waste glass powder pozzolanic activity by different methods. International Journal of Research and Revies in Applied Sciences,2012, 10, 322-328
[5]. Vasudevan, G., & Pillay, S. G. K. Performance of using waste glass powder in concrete as replacement of cement. American Journal of Engineering Research, 2013, 2(12), 175-181

Abstract: India is a developing country. As a personal vehicle increase with the development of country. This will be rise in overcrowded in large cities .So, our india need advance technology for traffic management system. The purpose of project is to modulate traffic system which will be the modifying the present traffic situation in a lane. Usually, we will be the fixed the average waiting time for all lanes in road. This advance technology help to change the average waiting time by calculating the number of vehicle in signal lane. The data of traffic will be send to central system through internet. Then the system will be decide the timing for signal according to traffic lane or program. This project also recognise the perform congestion light at previous interaction of traffic, so that the vehicle is change the road lane at that situation of overcrowded. This traffic management system is also useful in emergencies and help to minimum pollution and traffic congestion.

Keywords: Traffic, Waiting Time, Traffic Management, Pollution, Accidents, Signalized Intersection, Roadway Studies, Highway

[1]. Dr . Harish M ''Urban transport and traffic management for sustainable transport development in Mysoor city (India).'' Volume-2, Issue-3 ISSN-2319 to 4413, March 2013
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[3]. Geetam Tiwari ''Traffic planning for non-homogeneous traffic'' Volume-32-part 4 August 2007
[4]. Francois Mahama''Study of vehicular traffic congestion in sekonditakoradi''
[5]. Janice J K

Abstract: This paper proposes numerically different strengthening techniques for reinforced concrete (RC) T-beams based on finite element analysis (FEA), in which ultra high performance fiber reinforced concrete (UHPFRC) plates are affixed to RC T-beam using epoxy adhesive to improve the shear capacity. Three different experimental works of literature were used to validate the beam numerical models. Beams were modelled using 2D shell element model to reduce the central processing unit (CPU) time and one half of beam was simulated to take the advantage of symmetry. The strengthening techniques included, two-sided strengthening, one-sided strengthening, vertical strips, and.......

Keywords: ABAQUS; UHPFRC; 2D shell element; Plasticity; RC; FEA; Debonding; CPU

[1]. Kang, S. T., Lee, Y., Park, Y. D., & Kim, J. K. (2010). Tensile fracture properties of an Ultra High Performance Fiber Reinforced Concrete (UHPFRC) with steel fiber. Composite structures, 92(1), 61-71.
[2]. Habel, K., Viviani, M., Denarié, E., & Brühwiler, E. (2006). Development of the mechanical properties of an ultra-high performance fiber reinforced concrete (UHPFRC). Cement and Concrete Research, 36(7), 1362-1370.
[3]. Benson, S. D. P., & Karihaloo, B. L. (2005). CARDIFRC®–Development and mechanical properties. Part III: Uniaxial tensile response and other mechanical properties. Magazine of Concrete Research, 57(8), 433-443.
[4]. Xu, M., & Wille, K. (2015). Fracture energy of UHP-FRC under direct tensile loading applied at low strain rates. Composites Part B: Engineering, 80, 116-125.
[5]. Yoo, D. Y., Shin, H. O., Yang, J. M., & Yoon, Y. S. (2014). Material and bond properties of ultra high performance fiber reinforced concrete with micro steel fibers. Composites Part B: Engineering, 58, 122-133.

Abstract: India, which has a population more than 1.3 billion, has got lockdown down from 25 March 2020 till 1 June 2020 due to the covid19 pandemic. With that many people home, traffic is virtually non-existent, factories are closed, and construction has come to a halt in the country which has the world's second largest population. India's overall ranking is 177 among 180 countries and it is likely to have poor performance in the environmental health policy and deaths due to air pollution categories. Environmental problems in different cities of India are a threat to the well-being of the country and country's inhabitants as well as the flora and fauna. Overpopulation and the ensuing overuse.......

Keywords: Air Pollution, lockdown, control measure, health, population, environment

[1]. Air quality changes due to COVID19 lockdown in India and it's perception by public https://assets.researchsquare.com/files/rs-74610/v1/af4e2d25-7676-41ad-b4eb-23b6bb76da55.pdf?c=1599835808
[2]. https://www.weforum.org/agenda/2020/03/6-of-the-world-s-10-most-polluted-cities-are-in-india/
[3]. https://www.google.com/amp/s/www.insider.com/photos-reduced-air-pollution-india-2020-4%3famp
[4]. https://www.abc57.com/news/the-worlds-largest-coronavirus-lockdown-is-having-a-dramatic-impact-%20on-pollution-in-india
[5]. https://en.m.wikipedia.org/wiki/COVID-19_lockdown_in_India.

Abstract: Background: This study applied recycled coarse aggregate in the production of high-performance concrete (HPC) by partially replacing the natural coarse aggregate in the high performance concrete mix with recycled coarse aggregate, and the resulting high performance concrete mix with the following constituents (water, cement, silica fume, high range water reducing admixture, natural coarse aggregate, recycled coarse aggregate, and fine aggregate) was optimized using some statistical approach. Materials and methods: The mixture experiment approach was employed in this research. A selected reference mixture gave the guide for the selection of upper and lower bounds of the mixture components in terms of volume fractions. A total of.......

Keywords: Model; High performance concrete; recycled coarse aggregate; High range water reducing admixture (Superplasticizer), Extreme vertices design

[1]. Mehta, P. K, Monteiro, J. M., Concrete, microstructure, properties, and materials. New York: McGraw HilI,2006.
[2]. Aiyewalehinimi E. O., Adeoye T. E., Recycling of Concrete Waste Material from Construction Demolition. American journal of Engineering research. Volume-5, 2016.
[3]. Jianzhuang, X., Jiabin, L., Chi, Z. Mechanical Properties of Recycled Aggregate Concrete under Uniaxial Loading, Cement and Concrete Research, No. 35, 2000. 1187-1194.
[4]. Al Guru Fosroc LLC, Detailed information on High-range water reducing admixture (Conplast SP 430).
[5]. British Standard Institution. BS 1377-2. Methods of test for Soils for civil engineering purposes —Part 2: Classification tests. London, 1990.

Abstract: The work presented in this article consists in proving that the earth of Nomayos, a district of the city of Yaoundé, central province in Cameroon can produce clays with remarkable results in the manufacture of ceramic materials with remarkable performances. For that, we first made a descent on Nomayos and extracted the ground. Then we made a mechanical treatment of the ground which gave us clay that we characterized physically, thermally then chemically. For the mechanical treatment, we used local materials to obtain clay. For the physical properties, we used the standard tools of the physical characterization of clays by respecting the standards in force. For the thermal properties, we used a LENSEI apparatus to obtain the TGA/DSC of the clay. For the chemical properties, we used.....

Keywords: Mechanical processing of clay soil, physical properties, Thermogravimetric analysis, Thermo differential analysis, Fourier transform infrared

[1]. C.-A. de Chazelles, « Témoignages croisés sur les constructions antiques en terre crue: textes latins et données archéologiques », Tech. Cult. Rev. Semest. D'anthropologie Tech., no 41, p. 1‑27, 2003.
[2]. S. Ouattara, M. O. Boffoue, A. A. Assande, C. H. Kouakou, K. C. Kouadio, et E. Emeruwa, « Influence du ciment Portland sur les caractéristiques mécaniques et physiques d'un composite argile-sciure de bois utilisé comme Bloc de Terre Comprimée (BTC) », Matér. Tech., vol. 105, no 2, p. 203, 2017.
[3]. C. Nkoumbou et al., « Kaolin from Mayouom (Western Cameroon): industrial suitability evaluation », Appl. Clay Sci., vol. 43, no 1, p. 118‑124, 2009.
[4]. A. N. Nzeukou, N. Fagel, A. Njoya, V. B. Kamgang, R. E. Medjo, et U. C. Melo, « Mineralogy and physico-chemical properties of alluvial clays from Sanaga valley (Center, Cameroon): Suitability for ceramic application », Appl. Clay Sci., vol. 83, p. 238‑243, 2013.
[5]. R. Djomi et al., « Physicochemical and Thermal Characterization of Dura Palm Kernel Powder as a Load for Polymers: Case of Polyvinyl Chloride », J. Mater. Sci. Chem. Eng., vol. 6, no 6, p. 1‑18, 2018..

Abstract: The failures in most structures in many countries have brought about a lot of problems in the construction industry. In a bid to find a lasting solution to this problem, stakeholders in the Engineering sector suspected the use of unqualified personnel, sub-standard, and un-recommended materials as the likely causes of the issues. Water is one of the vital materials used in the construction industry. Therefore its specification must be strictly adhered to according to BS3148 for countries using the British Standard and ASTM C94 for American or International Standard. Non-drinkable or unclean water has been used as an alternate choice for potable water in concrete mixing either because of the need.......

Keywords: Structures failures; Algae Infested Water; Construction Industry; Concrete Compressive Strength; potable water.

[1]. A.A. Jimoh, S.S. Awe A study on the influence of aggregate size and type on the compressive strength of concrete
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[4]. C.H. Aginam, C.A. Chidolue, C. Nwakire Investigating the effects of coarse aggregate types on the compressive strength of concrete International Journal of Engineering Research and Application, 3 (2013), pp. 1140-1144
[5]. C.W. Gabriel Effects of wash water on the compressive strength of concreteScholar Works University of Arkansas: Civil Engineering Undergraduate Honors Theses. 39, (2017), pp. 1-18.