n

n

n

n

n

n

n

Abstract

nThe exact value of column shortening is not a straightforward task. Various parameters are affected on column shortening results like rate of construction sequence and reinforcement ratio. The building should stand with high stiffness and must be able to resist lateral deformation without having discomfort to the user. The excessive drift is controlled by using outrigger system. In high rise buildings, the construction sequence analysis and conventional sequence analysis are used for column shortening of columns. For analysis of high rise buildings, the construction sequence analysis shows very good results as compared to conventional sequence analysis. In this work, the lumped construction sequence method is used for column shortening, and its efficiency is investigated for different lumping ratios are 1/5, 1/10, 1/15, 1/25 of total number of storeys of the building. These different lumping ratios are considered on 75, 90, 120 storey buildings. The model analysis is carried out in ETABS software. The analysis results indicate that the saw-tooth shape of total shortening has occurred, which can be modified by the curve fitting technique. The results of column shortening are nearly matching for the 1F unit model and 1/15 ratio of a lumped model. The lumped models about 1/15 lumping ratio of the storeys of the building is recommended for construction sequence analysis with accuracy of results.n

n

n

n

Full Text

n

n

[foreach 379]n

n[/foreach]

u276e u276f

n

References

n[if 1104 equals=””]

1. Fintel, M., and Khan, F. R. Effects of Column Creep and Shrinkage in Tall Structures- Prediction of Inelastic Column Shortening. ACI Journal. 1969; 66, 957-967p.
2. M. T. R. Jayasinghe and W. M. V. P. K. Jayasena. Effects of Axial Shortening of Columns on Design And Construction of Tall Reinforced Concrete Building. ASCE. 2004; 9, 70-78p.
3. Bazat ZP and Wittmann FH. Creep and Shrinkage in Concrete Structure. John Wiley &Sons.1982; New York.
4. Tianyi Yi, Ph.D., Walter P. Moore. Differential Column Shortening Effects in Typical Medium to High Rise Building. ASCE- Structures Congress: New Horizons and Better Practices. 2007.
5. Kidong Park, Daeyoung Kim. A Comparison Study of Conventional Construction Methods and Outrigger Damper System for the Compensation of Differential Column Shortening in High-Rise Buildings. International Journal of Steel Structures. 2010; 10(4), 317-324p.
6. H.S. Kim and S.H. Shin. Column Shortening Analysis with Lumped Construction Sequences. Procedia Engineering. 2011; 14, 1791-1798p.
7. Santosh Panigrahi, Dr. Vikram Patil, Madan S. H., Somanagonda Takkalaki. Importance of Construction Sequence Analysis in Design of High Rise Building. IJISET. 2019; 6 (4).
8. M. Hassanien Serror and A. Essam El-Din. Assessment of Internal Forces Induced Due to Differential Shortening of Vertical Elements in Typical Medium-to- High-Rise Buildings. Journal of American Science. 2012; 8, 161-174p.
9. Fintel, M., Ghosh, S.K & Iyengar, H. Column Shortening in Tall Structures: Prediction and Compensation. Portland cement Association, Skokie. 1987; 3, 1-35p.
10. Shrikant R. Bhuskade, Samruddhi C. Sagane. Effects of Various Parameters of Building on Natural Time period. IJERT. 2017; 6, 557-561p.
11. Sudhir K. Patel, A. N. Desai. Effect of Number of Storeys to Natural Time Period of Building. National Conference on Recent Trends in Engineering & Technology, Gujarat.2011.
12. Geethu Girija Das, Dr. Praseeda K. I. Comparison of Conventional and Construction Stage Analysis of a RCC Building. IJASTE. 2016; 3, 50-57p.
13. Ruben Correia, Paulo Silva Lobo. Simplified Assessment of the Effects of Columns Shortening on the Response of Tall Concrete Buildings. Procedia Structural Integrity. 2017; 5, 179-186p.
14. Wael Alhaddad, Yahia Halabi, Hu Xu, Hong Gang Lei. Outrigger and Belt-Truss System Design for High-Rise Buildings: A Comprehensive Review Part II- Guideline for Optimum Topology and Size Design. Hindawi. Advances in Civil Engineering. 2020; 1-30p.
15. Han-Soo Kim. Optimum Locations of Outriggers in a Concrete Tall Building to Reduce Differential Axial Shortening. International Journal of Concrete Structures and Materials. 2018; 1-12p.
16. Indian Standard. Code of Practice for Design Loads (Other than Earthquake) for Buildings and Structures-Dead Loads. New Delhi: Bureau of Indian Standards; 1987.
17. Indian Standard. Code of Practice for Design Loads (Other than Earthquake) for Buildings and Structures-Live Loads. New Delhi: Bureau of Indian Standards; 1987.
18. Indian Standard. Code of Practice for Design Loads (Other than Earthquake) for Buildings and Structures-Wind Loads. New Delhi: Bureau of Indian Standards; 1987.
19. Indian Standard. Code of Criteria for Structural Safety of Tall Concrete Buildings-Lateral deflection. New Delhi: Bureau of Indian Standards; 2017.
20. Indian Standard. Code of Criteria for Earthquake Resistant Design of Structures-Earthquake Loads. New Delhi: Bureau of Indian Standards; 2016.

n[/if 1104][if 1104 not_equal=””]n

[foreach 1102]n t
1. [if 1106 equals=””], [/if 1106][if 1106 not_equal=””],[/if 1106]

n[/foreach]

n[/if 1104]

n

n

n

Recent Trends in Civil Engineering & Technology

n

[if 344 not_equal=””]ISSN: 2249-8753[/if 344]

n

n

n

n

n

n

n

n

n

n

n

n

n

n

n

[if 1193 equals=””][else][/if] Mayank Gupta

n [/foreach]n

[if 1181 equals=””][else][/if] Mayank Gupta

n [/foreach]n

n

n

n

n

n

n

n

Abstract

nImprovement of soft soil properties and effective pavement system performance of soft soils can be done only by stabilization process. It is an effective method. Jointly or individually, Chemical and/or Mechanical stabilization is done for various soils depending on the nature of that soil. As far as soft soils are concern, they are having reactive nature and so chemical stabilization is the best choice to improve such soil. Mainly, in Saurashtra, black cotton soil and red soil are the major problems for the highway’s construction. Among the coastal strip, saline sea sand is the key weak factor to look for. Black cotton soil with full content of montmorillonite, according to mineralogical analysis, leads to severe to extreme severe cracks without warning. Deep cracks of one inch to twelve inches, in some cases, definitely damage the construction. Red soils unit ruddy in colour as a result of the presence of iron. Red soils area unit fashioned because of weathering of ancient crystalline and metamorphic rocks. Red soils are porous, friable in nature, loose and aerated, contains soluble salts in small quantities. In this paper, comparative study of three stabilizing agents (1) cement waste dust, (2) lime powder, and (3) boiled rice water is done. Cement waste dust, collected from the cement plant, found to be most effective agents for improvement of soft soils properties among three. Other two agents are also effective to improve the properties. They can be used individually when required. But as far as the comparison is there, descending order of stabilizing agents is cement waste dust, lime powder, and boiled rice water. Improvement in the soil properties varies from 10% to 30% at an edition of cement waste dust and lime powder in range 7%, 10% and 13% by weight and boiled rice water in range 10%, 20% and 30% by volume of sample of soil. This study provides satisfactory reason to use cement waste dust, lime powder and boiled rice water thereafter to get stabilized soil.n

n

n

n

Full Text

n

n

[foreach 379]n

n[/foreach]

u276e u276f

n

References

n[if 1104 equals=””]

1. Solanki P, Khoury Naji, zaman MM. Engineering Properties and Moisture Susceptibility of silty Clay Stabilized with Lime, class C Fly Ash and Cement Kiln Dust. J Mater Civ Eng. 2009;21(12):749–57. doi: 10.1061/(ASCE)0899–1561(2009)21:12(749).
2. Vinod BB, Shende P, Hyder Baba M, B. Vinod α, P. Shende σ, and M. Hyder Baba ρ; 2016. Geo-Technical Investigation on Black Cotton Soils. [accessed: Feb 18, 2019] [online]. Available from: https://globaljournals.org/GJRE_Volume16/4-Geo-Technical-Investigation.pdf.
3. IRC 37. Tentative guidelines for the design of flexible pavements Indian Road congress, no. Jul; 2012. p. 108.
4. Oza JB, Gundaliya PJ. Study of black cotton soil characteristics with cement waste Dust and lime. Procedia Eng. 2013;51:110–8. doi: 10.1016/j.proeng.2013.01.017.
5. Oza JB, Gundaliya PJ. Study of black cotton soil characteristics with cement waste Dust and lime. Procedia Eng. Jan 2013;51:110–8. doi: 10.1016/J.PROENG.2013.01.017.
6. Zhang J, Yu X. Study on the development characteristics of the strength of inorganic binder modified saline soil. ICCTP. 2011, Jul. 2011:3701–5. doi: 10.1061/41186(421)369.
7. Oza JB, Gundaliya PJ. Comparing consistency limits of black cotton soil with cement waste Dust and wood shaving ash. J Geotech Eng J. 2017;4:31–5.
8. Hashemi MA, Massart TJ, François B. Experimental characterization of clay-sand mixtures treated with lime. Eur J Environ Civ Eng. 2018;22(8):962–77. doi: 10.1080/19648189.2016.1229228.
9. Punmiya BC. A Textbook on Soil Mechanics and Foundation, Sixteenth edition. New Delhi: Laxmi Publications; 2017.
10. Rethaliya RP. Soil Mechanics. New Delhi: Atul Prakashan; 2020.
11. Mittal S, Shukla JP. Soil Testing for Engineers. New Delhi: Khanna Publishers; 2001.
12. IS Code: IS 2720 (Part-2) 1973
13. IS Code: IS 2720 (Part-2)1983
14. IS Code: IS 2720 (Part-4)1985
15. IS Code: IS 2720 (Part-7)1965
16. IS Code: IS 2729–9198
17. IS Code: IS 2720 (Part-13)1972

n[/if 1104][if 1104 not_equal=””]n

[foreach 1102]n t
1. [if 1106 equals=””], [/if 1106][if 1106 not_equal=””],[/if 1106]

n[/foreach]

n[/if 1104]

n

n

n

Recent Trends in Civil Engineering & Technology

n

[if 344 not_equal=””]ISSN: 2249-8753[/if 344]

n

n

n

n

n

n

n

n

n

n

n

n

n

n

n

[if 1193 equals=””][else][/if] 

n [/foreach]n

[if 1181 equals=””][else][/if] 

n [/foreach]n

n

n

n

n

n

n

n

Abstract

nToday, because of globalization, there have been a number of improvements in the construction of modern technology worldwide, as a result of the quick and reliable distribution of new and emerging technologies through societies worldwide and the cross-border information sharing. Shaping which helps to mount the concrete in the desired shape It is a critical component of the construction to support the loads placed on it, as well as supporting moist cement until it sets. Formwork is a significant building function that accounts for 20–25 percent of overall construction costs. As a result of using the more recent formwork techniques, it is possible to cast larger components quicker than normal, reducing the need for time and labour when opposed to traditional methods. This paper conducts a comparative analysis between current formwork technologies and recently evolving formwork systems such as aluminum formwork and jump formwork systems, which are not widely used in India, and thus suggests which approach is best for the project under consideration. To gain a better understanding of this topic, various construction projects using newly emerging formwork techniques are analyzed, and the data obtained from these projects is used to compare newly emerging formwork with traditional formwork systems.n

n

n

n

Full Text

n

n

[foreach 379]n

n[/foreach]

u276e u276f

n

References

n[if 1104 equals=””]

1. Poon CS, Yip RCP. Comparison of the use of traditional and World Sustain Build conference.Vol. 2005(September); 2005. p. 27–9.
2. Mistry DJ, Raval AD, Pitroda JR. Emerging trends in advancement of formwork, Volume 9. Issue III, International Journal for Research in Applied Science and Engineering Technology (IJRASET) Page No: 775–785.
3. Al-ashwal MTaher, Abdullah R, Zakaria R. Traditional formwork system sustainability performance: experts’ opinion. IOP Conf Ser Mater Sci Eng. 2017;271. doi: 10.1088/1757– 899X/271/1/012108.
4. Loganathan K, Viswanathan KE. A study report on cost, duration and quality analysis of different formworks in highrise building. Int J Sci Eng Res. 2016;7(4):190–5.
5. Patel M, Pitroda PJ, Bhavsar PJJ. Recent Senario in Formwork: Aluminum Forms,’ no. 2015;April:1–7.
6. Parekh N, Marvadi BM, Patel U. Comparative studies of construction (conventional technique vs aluminum formwork techniques). J Inf Knowl Res Civ. Eng. 2015;3(2):279–87.
7. Shaik IA, Rahul BG. A critical study on technological advancements of formwork in construction project management. Int J Recent Technol Eng, vol. 7. 2019;C2(6):120–4.
8. Arbaz Kazi, Fauwaz Parkar. Comparative study and decision making for a formwork technique to be adopted on a construction Site in Mumbai. Int J Res Eng Technol. 2015;04(12):234–8. doi: 10.15623/ijret.2015.0412045.
9. Naik MB, Rathod HA. A review on innovating formwork systems. Int J Adv Res Eng Sci Manag. 2015;1(6):8.
10. Das R, Bhattacharya I, Saha R. Comparative study between different types of formwork, Int. Res. J. Adv. Eng Sci. 2016;1(4):173–5.
11. Salloum I. The economic, social, and environmental benefits of monolithic form work systems in construction. Vol. 2(2); 2017. p. 372–4.

n[/if 1104][if 1104 not_equal=””]n

[foreach 1102]n t
1. [if 1106 equals=””], [/if 1106][if 1106 not_equal=””],[/if 1106]

n[/foreach]

n[/if 1104]

n

n

n

Recent Trends in Civil Engineering & Technology

n

[if 344 not_equal=””]ISSN: 2249-8753[/if 344]

n

n

n

n

n

n

n

n

n

n

n

n

n

n

n

[if 1193 equals=””][else][/if] Mahdi Hosseini

n [/foreach]n

[if 1181 equals=””][else][/if] Mahdi Hosseini

n [/foreach]n