Creep of Concrete Incorporated with Marble Powder
Evaluation of Probability Distributions for Estimation of Peak Flood Discharge using FFA Approach
Experimental Investigation on Concrete by Partial Replacement of Fine Aggregate with Ceramic Powder
Transportation Planning using Activity-Based Travel Demand Model
Fatigue Life Prediction of Concrete Bridges using Wireless Sensors - A Review
Estimating the Soil Moisture Index using Normalized Difference Vegetation Index (NDVI) And Land Surface Temperature (LST) for Bidar and Kalaburagi District, Karnataka
Roughness Evaluation of Flexible Pavements Using Merlin and Total Station Equipment
Site Suitability Analysis for Solid Waste Dumping in Ranchi City, Jharkhand Using Remote Sensing and GIS Techniques
Unsaturated Seepage Modeling of Lined Canal Using SEEP/W
Strengthening and Rehabilitation of RC Beams with Openings Using CFRP
A Seasonal Autoregressive Model Of Vancouver Bicycle Traffic Using Weather Variables
Prediction of Compressive Strength of Concrete by Data-Driven Models
Predicting the 28 Days Compressive Strength of Concrete Using Artificial Neural Network
Measuring Compressive Strength of Puzzolan Concrete by Ultrasonic Pulse Velocity Method
Design and Analysis of Roller Compacted Concrete Pavements for Low Volume Roads in India
Chemical attack by aggressive acid sulphuric sulfate is one of the factors responsible for damaging cement pastes. Then sulphuric acid produced reacts with the surface of the concrete converting the cementitious material into ettringite expansive or gypsum. The objective of this research was done by investigating the sanitation networks as a function of type of pipes, concrete used, and waste concentration (as sulfates and hydrogen sulphide composition). In this research, the concrete specimens were immerged in real environment and these results were compared than result of specimen’s control. In 365 days age, immersion of SRC concrete specimens in wastewater is decreased than specimens control by 7% for tensile strength, which explains the formation of a protective skin the chlorides on the surface for these specimens. At the same age, it was obtained of rapid deterioration after 90 days, the exposure of SRC concrete specimens in H2S gas, from 90 to 365 days was registered of reduction to 34% for tensile strength or the formation of expansive ettringite after 90 days of exposure.
In this study, the influence of two varying speed RPM mechanical churners on the de-agglomeration of short pitch-based carbon fibers for proper dispersion and distribution in Self Compacting Concrete (SCC) were investigated. The degree of dispersion was assessed by investigating the change in rheological and electrical properties of carbon fiber based self-compacting concrete. The tests were done on fresh state properties, compressive strength properties, and electrical properties of SCC incorporating carbon fiber. The fresh concrete properties of carbon fiber based concrete varied with varying techniques. A decrease in the electrical resistance properties was observed in both the methods employed with variations in the magnitude of the decrease as per the method engaged.
This research article aims towards alteration in performance of pervious matrix due to variation in hydration kinetics. The effects of Portland cement and their basic constituents, along with hybrid polycarboxylate polymers, CHRYSO Air PL were evaluated. Different ratios of chemical suplimentaries (0.57, 0.61, 1, and 1.30% by weight) along with fluctuating quantities of ingredients were adopted to examine the response of physical and mechanical behavior. The investigation involves different laboratory testing based on identification of material properties and products. The material (i.e., coarse aggregate) used in the experimentation was tested for water absorption, specific gravity, flakiness and elongation index, and aggregate impact value. Based on the response of materials, the mix design for pervious concrete was sculptured. The profound interpretations were analyzed with varying curing techniques, i.e., immersed curing and internal curing. The result implies that the set of trials identified with mix proportions were found to be slightly aided with internal curing technique in mechanical testing. The use of chemical admixture, i.e., hybrid polycarboxylate polymers were found to be responsible for improvement of bonding capability of concrete structure. The compactness between the coarse aggregates and mortar has improved compressive strength capability followed by flexural parameters.
The vehicle emission is an important effectiveness measurement of any sustainable transportation development. Geometric and surface characteristics of pavement play an important role in reduction in fuel-economy and greenhouse gas emission. Deterioration of pavement surface is considered as the basic problem, which increases in fuel consumption, which leads to increase in emissions. The aim of the present research work is to provide better understanding on the role of pavement characteristics in green transportation initiates. Evaluating the effects of these emissions based on the roughness characteristics and the effect of gradient is the objective of the research. The field data collection surveys were conducted on two stretches in and around OU campus, viz., (i) OUCT road and (ii) DD colony A-lane. Roughness measurement surveys were conducted on these selected stretches by using MERLIN. The vehicular emissions of Alto and Swift petrol cars were measured by using AVL Di-gas 444 analyzer. Comparisons were made for emissions on these different stretches against roughness and gradient of these two roads. The comparisons show considerable percentage increase in emissions on the stretches with higher roughness and gradient. As the objectives intended, the impact of pavement roughness on vehicular emission is related to roughness and gradient and the regression equations were developed to estimate four types of vehicular emissions. Based on the impact of gradient on vehicular emissions, the geometric design engineer can adopt the minimum level of gradient to be used while designing new roads.
Water is an essential source to people and the largest available source of freshwater lies underground. Groundwater is an important source of water supply throughout the world. With the increasing demand of groundwater for various activities, the groundwater potential quickly declines. In order to prevent the aquifers from drastic depletion, the groundwater recharge is very essential. This study attempts to identify the favorable areas for groundwater recharge zones and to suggest the suitable recharge structures to augment the aquifer system of the study area using Remote Sensing (RS) and Geographical Information System (GIS). The various thematic maps, such as Geomorphology, Geology and lineaments, Soil, Slope, Land use/Land cover, Drainage, Runoff, Depth to weathered zone, Groundwater level fluctuation, and Water quality are taken for the analysis. The favorable areas for groundwater recharge have to be categorized as highly favorable, moderately favorable, less favorable, and poor.
Partial or full collapse of buildings under construction is a disturbing trend in India. These failures are drawing the attention of professional Civil Engineers and public as they cause loss of life and property. It is alarming to note that majority of such building failures during construction is of private buildings, where it was assumed that quality assurance and control were much superior to public works of similar nature. If the central government's focus on 'Housing for all by 2022' has to succeed, greater confidence in the minds of Indian and foreign investors has to be instilled. Hence sound construction practices like peer/third party review, professional ethics and integrity, strict code enforcement, precisely defined duties and responsibilities for stake holders, institution for failure investigation, better technical education are to be incorporated. In this study, the building failures during construction are analyzed for determining the shortcomings and suggestions for reducing such failures are made.