Event Name: Skyscrapers India Summit 2017
Event Date: 12 – 15 September 2017
Event Location: Mumbai, India
Contact Email: [email protected]
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Awarded as the best online publication by CIDC
Event Name: Skyscrapers India Summit 2017
Event Date: 12 – 15 September 2017
Event Location: Mumbai, India
Contact Email: [email protected]
Read More
Event Name: 6thRail Engineering & Maintenance Summit 2017
Event Date: 22 – 25 August 2017
Event Location: Singapore
Contact Email: [email protected]
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By
G.H V SAI SIMHA 1
1. Graduate Student, Department of Civil Engineering, K L University, Vaddeswaram, Guntur.
ABSTRACT
Harm in adaptable asphalts happen because of the development of overwhelming vehicles and change in climatic conditions. The primary parameters that cause the damage of the asphalt layer are fatigue
cracking and rutting. Cracking can be prevented by maintaining specified temperature during the process of preparation of mix to laying of bituminous mixes. In this way, to keep the rutting, the groove safe blends like Stone lattice black-top also called STONE MATRIX ASPHALT (SMA) must be utilized as a part of the bituminous layers. In this undertaking SMA is chosen to check its execution in all viewpoints, for example, stability (kg), deformation (mm), , volume of voids in mineral aggregates(VMA), with the expansion of fillers. The utilization of mechanical by-items utilized as fillers enhances the building properties of STONE MATRIX ASPHALT (SMA) mixtures. The expanded solidness because of the expansion of the filler is spoken to by an expansion in the softening point, viscosity, stability, and resilient modulus, and also abatement in entrance or decrease in penetration. In this venture the distinctive fillers like glass powder, magnetite (iron pellets), cement kiln dust, and filler fly fiery debris or filler fly ash have been utilized. All out 12 sets of test examples were set up by utilizing distinctive sorts of filler having diverse sum in the mixture. The Marshall properties got for the fillers uncover that, flyash remains filler, examples have been found to display higher stability contrasted with glass powder, cement kiln dust, magnetite. What’s more, magnetite filler indicated least deformation at 6 % bitumen content and the rate of air voids were observed to be diminished with the expansion of bitumen substance.
Keywords: stone matrix asphalt, filler, stability, deformation, Cement kiln dust, magnetite, glass powder, fly ash
Today, i.e. April 02, 2017, the prime minister of India inaugurated India’s longest tunnel in Kashmir known as the Chenani-Nashri Tunnel, also known as Patnitop Tunnel. This is considered as an engineering marvel in India and it will reduce the distance between Jammu and Srinagar by 30.11 km and time by two hours.
By
M.RAJAGOPAL REDDY 1, P.RAJESH 2
1- Post Graduate student, Department of civil Engineering,VFSTR university , Vadlamudi.
2-Assistant Professor, Department of civil Engineering, VFSTR university, Vadlamudi.
ABSTRACT
The FLAT SLAB SYSTEM being used in majority of the constructions. It elevates more clear space in architecting the construction design in easy manner and duration of construction would be short due to the flat slabs size. Compare to the traditional concrete construction slab system is more viable due to the fact that it avoids the heavy beams, which are the big vulnerability in case of earthquakes. Objective of this paper is to investigate the behavior of flat slab system in few different use cases.
1. Flat slab structure without drop.
2. Flat slab structure with column drop.
3. Flat slab structure with shear wall.
4. Flat slab structure with column drop and shear wall together through response spectrum method by using ETABS software.
The behavior of flat slab is investigated in terms of the following factors:
1. Frequency
2. Base Shear
3. Storey level accelerations
Also most severe problem in flat slabs as follows:
1. Failure punching shears
2. Shear stresses during ground unbalance
3. Slab column connections to brittle punching shear stresses during earthquakes.
Also this paper investigates about the combinations that can produce less punching shear at slab column joint.
By
Pradip Kandel
Build Change,
Kathmandu, Nepal
1. ABSTRACT
In this paper, an overview of the advances in findings regarding the study of the self-healing mechanism in the bituminous binder with emphasis on its implicationin the durability of the asphaltic pavements is presented. The pavement losses itsstrength, durability and required level of performance due to fatigue failure of the asphaltic layers under the repeated cycles of traffic loading ,temperature extremities, environmental factors such as moisture, rainfall etc. The ‘’self-healing’’ of the pavements eliminates the premature ageing and failure of the pavements and hence reduces the need of the frequent and costly maintenance of the pavements lowering the life cycle cost, eliminates the obstruction in the smooth traffic flow due to maintenance and rehabilitation. The basic principle behind the self-healing is using the material property to detect the progressing damage and repair the damage(itself or by external intervention). Several projects were conducted in the TU Delft regarding bacterial healing of the concrete, fiber reinforced cementiousmaterials. Also, the practice such as mixing rejuvenator microcapsules in the mix, Induction heating (steel wool fiber mixed in bitumen).The self-healing of the pavements has yet not been fully understood and still under research. Many of the researches whetherit be by F. hammoum etal., by Feng Su et al., by Enieb et al.,Gracia et al. ,by Barrasa et. al. give several important understanding about the self-healing mechanism in the flexible asphalt pavements .This paper goes through the important researches, findings and gaps and shortcomings in them and publications till now regarding the aforementioned topic .
By
Sourav Dutta
Manager-Civil
Design and construction:
The design and construction of formwork should take account of safety and of the surface finish required. The formwork should be sufficiently rigid and tight to prevent loss of grout or mortar from the fresh concrete, during its placing and construction.
Formwork and its supports should maintain their correct position and be to correct shape and profile so that the final concrete structure is within the limits of the dimensional tolerances specified. They should be designed to withstand the worst combination of self-weight, reinforcement weight, wet concrete weight, concrete pressure, and construction and wind loads, together with all incidental dynamic effects caused by placing, vibrating and compacting the concrete.
By
Pravesh Shukla
Abstract
The utilization of industrial and agricultural waste produced by industrial process has been the focus on waste reduction research for economical, environmental and technical reasons. SCBA is a fibrous waste product of the sugar refining industry, along with ethanol vapour. Bagasse ash mainly contains aluminium ion and silica. The use of SCBA as a pozzolonic material for producing high strength concrete. OPC is partially replaced with finely SCBA. At present the disposal of waste tyre is becoming a major waste management problem in the world. In this project, the bagasse ash has been chemically and physically characterized and partially replaced in the ratio of 0%, 5%, 15% and 25% by weight of cement in concrete. The mix proportion for M30 grade concrete was derived. Rubber tyre waste has been used as coarse aggregate with replacement of conventional coarse aggregate and it is taken as constant of 10%.
By
Shubham Sunil Malu
1.0 INTRODUCTION:
Cracking is one of the major issues in concrete. Since concrete has various physical and chemical properties it is prone to cracking. Its elimination is not possible totally but it can be restricted or reduced to a certain extent. Mostly, cracking goes on a microscopic scale and does not appear visibly as a fault. If the cracking goes on a macroscopic scale it can result in loss of strength, stability and durability. It can also cause decrease in sound insulation and overall efficiency besides affects aesthetics to a greater extent.
The main causes of cracking are as follows:
2017 China (Guangzhou)
Advanced Building Technology
and Construction Industrialization Exhibition
September 10-12, 2017 Guangzhou · Canton Fair Pazhou Exhibition Hall
Organizers:
Chinese Confederation of Roll Forming Industry
Guangdong Provincial Association of Steel Construction
Guangzhou Zonglan Exhibition Co., Ltd.