Effects of Complex-Contrast Versus Traditional Resistance Training on Linear Sprint, Change-of-Direction Speed, Jumps, and Maximal Strength of Physically Active Males

Background: Complex-contrast training (CT) combines traditional resistance training (RT) and ballistic training exercises to induce neuromuscular adaptation. However, adding ballistic exercises with RT exercise in CT format induces superior neuromuscular adaptation compared to performing RT alone, which needs investigation. Objective: This study compared the effects of seven-week CT and RT intervention on selected physical fitness measures among physically active adult males. Methods: A 2 × 2 repeated measures ANOVA design was used to analyse the effects of training intervention on physical fitness measures. Pre- and post-intervention data were collected for 30-m linear sprint time (with split times measured at every 5 m), countermovement jump (CMJ) height, triple hop distance, change-of-direction (COD) time, and one-repetition maximum (1RM) squat. Results: Significant within-group improvements were observed in the 1RM squat (both p0.001), CMJ (CT, p0.001; RT, p=0.003), and 10 m to 30 m linear sprint times (CT, all p0.001; RT, p=0.003-0.011) for both the experimental groups. However, significant within-group improvements for triple-hop distance (p0.001) and 5 m sprint (p=0.008) were observed only in the CT group. A significant deterioration in performance was observed for COD deficit (CT, p=0.020; RT, p=0.019) in both the experimental groups. A significant deterioration in COD total time was observed in the RT group (p=0037). A significant group-by-time interaction was observed only in 5 m linear sprint time (p=0.042), favouring the CT group. Conclusion: Seven weeks of CT and RT improved the 1RM squat, CMJ height, and 10 m, 15 m, 20 m, 25 m, and 30 m linear sprint times. Meanwhile, the triple-hop distance and 5 m sprint time improved only after CT. Lastly, CT improved the 5 m sprint time more effectively than RT

EFFECT OF GEOPOLYMER MORTAR IN FERROCEMENT FOR VARIATION IN MESH SIZE AND NUMBER OF LAYERS

Globally, the worlds Portland cement production contributes about 1.6 billion tons of CO2 or about 7% of global loading of CO2 into the atmosphere. The manufacture of Portland cement releases Carbon dioxide that is significant contributor of Green house gas emissions to the atmosphere. Geopolymer is more eco friendly material and a strong alternative to Portland cement. Geopolymer mortar can be used in Ferro cement instead of other conventional materials like cement mortar. Ferro cement is a composite material formed by closely spaced wire mesh which uses wire meshes as reinforcement. Ferrocement has high tensile strength, minimum thickness, ease of mould ability. Experimental investigation has been carried out to study the Effect of Geopolymer mortar in Ferrocement for variation in mesh size and number of layers. For this, tensile testing was done on Geo-ferrocement specimens of size 750 x 60 x 30 mm reinforced with single, double, triple layer using variation in meshes of different sizes. Similarly, compression testing of cubical specimens of size 70 x 70 x 70 mm reinforced with single, double, triple layer of meshes of different sizes was done. Test results show that tensile and compressive strength of specimen’s increases with increase in number of layer of meshes and mesh size also played an important role in strengthening of specimens. Compressive strength of single mesh layer in Geopolymer mortar is greater than single mesh layer in conventional cement mortar by approximately 5 %. For double layer mesh, specimens with Geopolymer mortar show greater strength than specimens with conventional cement mortar by 5-6 %

COMPARISION OF WIND LOADS ON TALL BUILDINGS BY ANALYTICAL & EXPERIMENTAL METHODS

The work presents comparative study of wind forces on high rise buildings for different analytical methods. As the height of the structure goes on increasing wind forces start predominating over earthquake forces which require proper assumption of force factors in order keep structure safe & serviceable. The reason for knowing exact wind force behavior and values is to identify and keep parameters such as the base shear, storey displacement, storey drift, overturning moment and story shear within permissible limits of serviceability. As Comparisons of the wind forces obtained by Indian codal provisions & wind tunnel are presented for some representative cases to gaze the relative level of protection attributed by Indian wind codes. This study includes wind forces obtained by force coefficient based static analysis and gust factor based dynamic analysis. Experimental comparative study of wind force conducted on two of the high rise buildings from Mumbai metro city for static and dynamic codal provisions & wind tunnel observations. The analysis performed on this building to identify above factors by using software’s package i.e. Etabs & wind tunnel laboratory data

Comparision of Wind Loads on Tall Buildings by Analytical & Experimental Methods

The work presents comparative study of wind forces on high rise buildings for different analytical methods. As the height of the structure goes on increasing wind forces start predominating over earthquake forces which require proper assumption of force factors in order keep structure safe & serviceable. The reason for knowing exact wind force behavior and values is to identify and keep parameters such as the base shear, storey displacement, storey drift, overturning moment and story shear within permissible limits of serviceability. As Comparisons of the wind forces obtained by Indian codal provisions & wind tunnel are presented for some representative cases to gaze the relative level of protection attributed by Indian wind codes. This study includes wind forces obtained by force coefficient based static analysis and gust factor based dynamic analysis. Experimental comparative study of wind force conducted on two of the high rise buildings from Mumbai metro city for static and dynamic codal provisions & wind tunnel observations. The analysis performed on this building to identify above factors by using software’s package i.e. Etabs & wind tunnel laboratory data

Flexural Strenth Analysis Of Fly Ash Based On Geopolymer Concrete

The geopolymer technology was first introduced by Davidovits in 1978. His work considerably shows that the adoption of the geopolymer technology could reduce the CO2 emission caused due to cement industries. Davidovits proposed that an alkaline liquid could be used to react with alumina silicate in a source material of geological origin or in by-product materials such as fly ash to make a binder. Recently, cement utilizing became an important issue in construction industry. It is because on its production process, cement was released CO2 gases which contribute in the formed of glass house effect. In order to succeed the sustainable development mission, geopolymer materials were introduced as an alternative eco-green material. Geopolymer material is an inorganic material which contain Silica, alumina and alkaline as an activator

Proceedings of National Conference on Relevance of Engineering and Science for Environment and Society

This conference proceedings contains articles on the various research ideas of the academic community and practitioners presented at the National Conference on Relevance of Engineering and Science for Environment and Society (R{ES}2 2021). R{ES}2 2021 was organized by Shri Pandurang Pratishthan’s, Karmayogi Engineering College, Shelve, Pandharpur, India on July 25th, 2021. Conference Title: National Conference on Relevance of Engineering and Science for Environment and SocietyConference Acronym: R{ES}2 2021Conference Date: 25 July 2021Conference Location: Online (Virtual Mode)Conference Organizers: Shri Pandurang Pratishthan’s, Karmayogi Engineering College, Shelve, Pandharpur, India