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Highway Engineering

How to Repair Roads?

Asphalt will deteriorate almost quickly, causing road distresses to appear, regardless of how well a road is designed. Traffic, dampness, and a lack of preventive maintenance treatment are all factors that speed up the deterioration of a road. Depending on the method used, mending a pothole on the road might be simple or complex. In some circumstances, dumping a mixture into a pothole, compacting it with a shovel, and turning away is a simple procedure. In other cases, pulverizing the pothole and laying down new pavement may be necessary. The sort of asphalt repair procedure required is determined by the nature and severity of the damages to an asphalt road. It is important to note that the longer it is taken to repair damaged asphalt, the worse the damage will become. Extensive damage is also more expensive since it necessitates more difficult repair methods, including removal, replacement, or resurfacing. As a general guideline, it is essential to inspect asphalt road for damage once a week or once a month, depending on how much traffic it receives. Parking lots with a lot of traffic will undoubtedly require more upkeep than those with less traffic. Thus, it is necessary to implement procedures as per the hole sizes along with their nature.
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The Road Printer

By
GUTTA.GURUKRISHNA

Abstract
The evolution of innovative printing techniques in the three-dimensional world goes on. Before we reported about the amazing rapid prototyping revolution, about printers that are able to print complete buildings and about the inkjet printer for streets. Now there is also the road printer. The Tiger Stone brick printer makes road construction as easy as laying laminate flooring. BLDGBLOG considers the invention of the Dutch company to be a real “road printer”.

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Effects of Fillers on the Stability Properties of Stone Matrix Asphalt (SMA)

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

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Advances in Self-healing of bitumen by micro capsulation and its implications on durable Asphaltic Pavements

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 .

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Parking Patterns In Order To Menace Traffic Chaos

By
Er. Navneet Kumar
DEPARTMENT OF CIVIL ENGINEERING
ITM UNIVERSITY, GWALIOR

Abstract
“License to drive is not a license to kill”. The unscrupulous growing population has created many problems in country like India. One of the challenging ones being car parking which we confront almost every day. Besides the problem of space for cars moving on the road, greater is the problem of space for a parked vehicle considering that private vehicles remain parked for most of their time. While residential projects still escape with designated parking, the real problem lies with commercial spaces many a time which is overcome by taking extra open spaces to park.
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