Department of Civil Engineering

Indian Institute of Technology Palakkad&nbsp;(IIT Palakkad or IIT PKD) is a public autonomous&nbsp;engineering&nbsp;and&nbsp;research&nbsp;institute located in&nbsp;Palakkad,&nbsp;Kerala. It was&nbsp;one of the five new&nbsp;IITs&nbsp;proposed in the&nbsp;2014 Union budget of India. The campus was inaugurated on 3 August 2015. The institute has 94 faculty, 978 students, and 63 non-teaching staffs.

IT Palakkad currently offers four-year Bachelor of Technology (B.Tech) and two years MS programmes in 8 different engineering disciplines including&nbsp;Computer Science, Electrical, Mechanical, Civil among others.

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IIT Palakkad

Huge volume of project information are generated during the life cycle of an AEC projects. These project information are categorized in to technical and administrative information and managed through appropriate processes. There are many tools such as Document Management Systems, Building Information Modeling (BIM) available to manage and integrate the technical information. However, the administrative information and its related processes such as the payment, status, authorization, approval etc. are not effectively managed. The current study aims to explore the administrative information management process of a local housing delivery public agency. This agency manages more than 2000 housing projects at any time of a year. The administrative processesare characterized withdelivery inconsistencies among various project participants. Though there are many commercially available process management systems, there exist limitations on the customization of the modules/ systems. Hence there is a need to develop an information management system which can integrates and manage these housing projects processes effectively. This requires the modeling of administrative processes and its interfaces among the various stakeholder processes. Hence this study aims to model the administrative processes and its related information during the life cycle of the project using IDEF0 and IDEF1X modeling. The captured processes and information interfaces are analyzed and appropriate process integration is suggested to avoid the delay in their project delivery processes. Further, the resultant model can be used for effectively managing the housing delivery projects.

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MATEC Web of Conferences

Modelling process integration and its management - Case of a public housing delivery organization in United Arab Emirates

The use of asphalt-rubber gap-graded (AR-Gap) mix as a pavement material has gained importance due to its environmental benefits and enhanced performance. This paper reviews the current state-of-the-art pertinent to AR-Gap mix design research and practice. The various mix design practices of AR-Gap mixes adopted by various agencies were summarised. Furthermore, the performance characteristics of AR-Gap mixes such as drain-down, moisture susceptibility, permanent deformation, and fatigue cracking were also documented. The field performances of AR-Gap pavements were also reviewed. Due to an increased use of AR-Gap as a pavement material owing to its several benefits, there exists an extensive scope for further research to understand the material better, which will make it a promising sustainable pavement material in future. Furthermore, considering that AR-Gap mix design and construction technologies are yet to be fully implemented worldwide, the present work aims to be an up-to-date reference to provide benefits and issues associated with the AR-Gap mixes. However, based on the various research questions emanating out of the review process, it was adjudged that there is still further scope for advancing the current state-of-the-art pertaining to the AR-Gap mix design, and the contribution of rubber inclusions in assisting the mix’s augmented performance. © 2016 Informa UK Limited, trading as Taylor & Francis Group.

Road Materials and Pavement Design

Asphalt-rubber gap-graded mixture design practices: a state-of-the-art research review and future perspective

The objective of this study was to evaluate the effect of various crumb rubber (CR) gradations on asphalt binder performance leading to the development of a rational asphalt-rubber (AR) binder selection procedure. The scope encompassed advanced asphalt binder rheological characterization and statistical analyses in order to formulate a methodical procedure to select an optimum AR material. A total of twenty asphalt binders covering over 5000 data points were utilized, including two virgin binders, and eighteen laboratory prepared AR binders at one CR dosage of 20% but with varying CR gradations. Temperature-frequency oscillation and multiple stress creep and recovery (MSCR) tests were conducted on all the twenty asphalts. G* shear modulus master curves developed from the oscillation test results indicated that AR binders with finer CR particles in the gradation produced flatter master curves that had high G* magnitudes, which are indicative of high strength, better rutting resistance, and reduced viscosity-temperature susceptibility than those with coarser gradation. MSCR test findings complemented the oscillation test results. Analyses of Variance and Dunnett’s statistical tests were performed on the binder rheological properties. From statistical analyses, it was concluded that the variation in CR gradations could significantly affect the binders’ properties and resistance to distresses. Based on the results of rheological experimentation and statistical analyses, a methodical selection procedure for AR binders was devised by developing Ashby plots for the binder rheological parameters. These Ashby plots are envisioned to assist the pavement engineers and contractors in choosing the best suitable AR binder with the essential properties required to satisfy the performance criteria. © 2017, RILEM.

Materials and Structures/Materiaux et Constructions

Effect of crumb rubber gradation on asphalt binder modification: rheological evaluation, optimization and selection

Jetted and grouted precast piles (JGPPs) are prefabricated piles installed utilizing jetting and pressure grouting. These piles are well-suited for urban environments as they overcome the inherent drawbacks of currently chosen deep foundations (e.g., noise and vibration disturbances due to pile driving, quality control issue with cast-in-place construction). Past studies in a large test chamber facility have shown that JGPPs can support very high axial and torsional loads owing to their improved skin and tip resistances subsequent to the side-and tip-grouting. However, this new pile has not yet been implemented in practice due to the lack of field verification of its constructability as well as load resistance. This paper presents the full-scale field construction of two JGPPs and the load test program performed to investigate the applicability of the new pile as a foundation for miscellaneous structures. As such structures are subjected to high torsion and lateral load during severe wind-loading (e.g., hurricanes), the test program included combined torsion and lateral loading as well as simple lateral loading. An actual pole-mast arm assembly was used in the coupled torsion and lateral load test to simulate the typical field-loading scenario. The load was applied using a crane and the pile’s rotations and translations were monitored using the novel instrumentation systems. The field tests showed that JGPPs possess high torsion and lateral resistances compared to identically sized drilled shafts, which is a common foundation type used for such structures. The two methods available for predicting axial resistance of the new pile are found to be suitable for the estimation of torsional resistance as well. It was also found that the concurrent application of torsion significantly reduces lateral resistance of the new pile foundation as observed for drilled shafts. In general, the study reveals that the JGPPs are well-suited foundations for miscellaneous structures. © 2017, Canadian Science Publishing. All rights reserved.

Canadian Geotechnical Journal

Suitability of jetted and grouted precast pile for supporting mast arm structures

Noise and vibration are critical issues associated with pile driving operations in an urban environment. Alternative foundations such as drilled shafts and augercast piles alleviate much of the operational noise and vibration. However, the cast-in place installation process may raise concerns in quality control if not adequately monitored. Post grouting the drilled shaft base has been widely used to mobilize a larger portion of the tip resistance prior to construction of the superstructure, thereby controlling the axial displacement during the service. In response to the operational challenges in urban environments, the Florida Department of Transportation and the University of Florida have recently developed a new generation of deep foundation, namely "Jetted and Grouted Precast Pile". The process consists of pressurized water jetting a concrete pile instead of a hammer-driven installation, and subsequent side and tip grouting the pile, which significantly improve skin and tip resistance, respectively, as well as lateral and torsional stiffness. Several studies have been focused on such increase in axial and torsional resistance by grouting techniques. However, there has been little field data available to support quantifiable noise and vibration reduction by jetting and grouting processes. This paper presents field measurements of noise and ground surface vibration during full-scale installation of jetted and grouted piles. Comparison of measured data to recommended noise and vibration limits suggests that jetting and grouting techniques are a viable solution for urban geo-infrastructure development. © ASCE.

Geotechnical Special Publication

Field measurement of noise and ground surface vibration during pile jetting and grouting

This paper aims at establishing the influence of acidic and alkaline pore fluids on the swell behaviour of an expansive soil. A series of laboratory one dimensional free swell tests were performed to study the behaviour of soil in acidic and alkaline environment. Three different concentrations of sodium hydroxide and sulphuric acid solutions were used as pore fluids to understand the influence of variable concentrations on the swell behaviour of soil. Results showed that, the swelling of soil that interacted with sodium hydroxide solution initially increased at lower concentration and then decreased with increase in concentration. In contrast, the swelling initially decreased at lower concentration of sulphuric acid and then increased with increase in concentration of solution. The complexity in the swell behaviour of contaminated soil was assessed by thoroughly investigating the mineralogy and microstructure alterations by carrying out X-ray diffraction analysis, Scanning electron microscopy and Energy dispersive analysis of X-ray at the end of interaction. © 2017, Budapest University of Technology and Economics. All rights reserved.

Periodica Polytechnica Civil Engineering

Swelling of natural soil subjected to acidic and alkaline contamination

International Conference on Composite Materials and Structures- ICCMS

B-spline wavelet finite element method for static analysis of 1D problems with material nonhomogeneity

This paper presents an analysis of red light running (RLR) conducted at saturated intersections in the city of Mumbai, India, where the traffic is highly heterogeneous with respect to vehicle classes and driver behavior. When all vehicles are considered, almost one in 17 drivers is seen to be jumping red signals there. Unlike the RLR behavior that has been previously reported from intersections elsewhere, a peculiarity observed here is that, within a single red phase, two distinguishable segments of RLR behavior exist. The authors classified them into two regimes: Regime 1, just after the onset of red, and Regime 2, just before the onset of the next green. About one-third of RLR events occur in Regime 1 and the rest in Regime 2. The authors fit different distributions on the time distribution of RLR events. The Kolmogorov–Smirnov test suggests that, at all intersections, exponential distribution fits best for RLR behaviors in Regime 1, and extreme value distribution fits for Regime 2. In addition to those two regimes, RLR at a lower rate is observed in the period between those regimes, and normal distribution fits there. To analyze the causal factors of RLR behavior in the two regimes, the authors developed models at a mesoscopic level specific to vehicle class and regime. Although the red-to-green ratio and the presence of policing prove to be relevant factors affecting RLR in both the regimes, the relative time for which the conflict area is free affects RLR in Regime 2 but not in Regime 1.

Transportation Research Record

Red light running at heterogeneous saturated intersections in Mumbai, India: On the existence of two regimes and causal factors

Procedia engineering

Damage to Shallow Tunnels under Static and Dynamic Loading

 Abstract—This study compares the use of Liquid Crystal coated Polaroid Glass Electrode (LCPGE) material collected from the disposed computer monitor and carbon cloth as electrodes in microbial fuel cell (MFC) for the simultaneous reduction/recovery of hexavalent chromium (Cr 6+) from wastewater. The Cr 6+ is bioelectrochemically reduced to the non-toxic Cr 3+ form in the cathode chamber of a two-chambered MFC. At the cathode LCPGE interface, 100% of Cr 6+ reduction was achieved within 48 h of operation. Similarly, using carbon cloth as cathode, 100 mg/L of Cr 6+ was completely removed within 24 h (initial pH 2.0). In both the electrodes, the chromium was recovered as highly stable and non-toxic chromium oxide (Cr 2 O 3) . The recovered Cr 2 O 3 was characterized by ATR-FTIR analysis. A maximum power density of 10 mW/m 2 and 700.11 mW/m 2 was achieved for the LCPGE and carbon cloth electrodes, respectively at ambient conditions. Moreover, 78% of organic carbon is mineralized at the anode chamber making this technology a more viable option for simultaneous chromium reduction and domestic wastewater treatment along with power production. Furthermore, the recovered Cr 2 O 3 can be used as a raw material for various applications.