Civil Engineering Highway Engineering - Science topic

I need help with one survey to reach 3000 people (response). I will be really thankful if anyone can reply and share this survey.

https://docs.google.com/forms/d/e/1FAIpQLSf3iKWTc0VkEyPnwX8lIHcVB_4aWJajgbA0_EzkC6HAEpCyHQ/viewform?usp=sf_link

I am currently working on a project that involves analysing and understanding the distribution of wheel wander within a lane. Specifically, I am interested in identifying the probable positions of wheels within a lane, considering various factors such as lane width, speed environment, geometry, and more. To aid in my research and analysis, I am seeking relevant documents, standards, guidelines, articles, or any other resources that provide insights into this area. Whether these resources are from international standards, guidelines from specific countries, academic articles, or industry publications, I am keen to gather comprehensive information. If you have access to or can point me in the direction of such materials, it would greatly assist me in advancing this project and ensuring its accuracy and effectiveness. I appreciate your assistance in this matter and look forward to any guidance or information you can provide.

I am currently working on a project that involves analysing and understanding the distribution of wheel wander within a lane. Specifically, I am interested in identifying the probable positions of wheels within a lane, considering various factors such as lane width, speed environment, geometry, and more. To aid in my research and analysis, I am seeking relevant documents, standards, guidelines, articles, or any other resources that provide insights into this area. Whether these resources are from international standards, guidelines from specific countries, academic articles, or industry publications, I am keen to gather comprehensive information. If you have access to or can point me in the direction of such materials, it would greatly assist me in advancing this project and ensuring its accuracy and effectiveness. I appreciate your assistance in this matter and look forward to any guidance or information you can provide.

Extended Abstract Submission Deadline – 30th April 2023

Submission Link: https://cmt3.research.microsoft.com/R4TLI2023

The Sri Lanka Society of Transport and Logistics (SLSTL) is organizing the 8th International Conference on Research for Transport and Logistics Industry (R4TLI) 2023, which is scheduled to be held on the 26th of August 2023 in Colombo, Sri Lanka both onsite and virtually.

R4TLI is an initiative that endeavors to promote Research and Development in the Transport and Logistics Industry in Sri Lanka, and in the Asian region helping diagnose its current issues, experienced by the industry and identify potential improvements and sustainable solutions, based on scientific evidence. This annual research conference intends to build a platform for effective dialogue among academics and professionals in the fields, and for showcasing of research outputs and dissemination of new knowledge developed in this regard.

We encourage all of you, academics and professionals interested in the research and development of the transport and logistics industry to join us by submitting Extended Abstracts (the extended abstracts template is attached herewith) on your authentic research, in view of presenting them at the conference and subsequently publishing them in the R4TLI Proceedings. (For past proceedings visit “PUBLICATIONS” menu at www.slstl.lk)

The selected Extended Abstracts will be invited to submit the full paper for the Journal of South Asian Logistics and Transport (JSALT) which is a peer-reviewed fully open-access Journal of the Sri Lanka Society of Transport and Logistics, Moratuwa, Sri Lanka and published by SLJOL (https://jsalt.sljol.info/)

Please suggest a few appropriate Journals without charge, No tamplate and fast publication for Transportation Engineering?

Most highway and traffic engineers agree that road classification and road hierarchy are essential to good road network management and traffic management.

Most locations (whether a country or a city) have them. But how can you check if what you propose is actually a good idea, how can you check if it works?

I used binary logistic regression to model the behavior of drivers' stop and go decision in dilemma zone. Now I have to estimate the elasticity of variables (corresponding change in outcome probability on changing one unit of X). My variables are of continuous and categorical nature. Any help would be highly appreciated.

P.S: I have uploaded the screenshot of one of the papers where author has calculated the elasticities.

I am working on potholes detection algorithms using image processing. Is there any appropriate dataset of potholes available or not? Anyone who also worked on it?

Taking into consideration the human index, finding better work during or after education, salaries and better benefits

Especially for PHD students in engineering programmes.

Thanks

I am looking for asphalt binder database containing DRS data for frequency or Temperature sweep of Unaged/RTFOT/PAV samples.

It could be modified or neat asphalt.

Can someone assist me with it or give me a link to where I can download an open open-source database?

Life of the structure... is it real issue to be considered by the designers ... or its left to time to handled ..

Can you Share with us a world class achievement or a well known World recognized project in which you contributed or participated effectively in its success?

I compacted unbound aggregates at optimum moisture content and then let it dry in the oven for one day. The repeated load triaxial test was carried out on this sample in which I faced a weird behavior (please find the attached figures). The permanent deformation initially increases with a high rate and then its rate decrease slowly and finally it has a negative displacement (like expansion).

This behavior only happened in dried samples and the lower stress conditions (1.59 KN and 1.767 KN deviatoric stresses and 120 and 41.7 confining pressures). These samples have normal behavior, the permanent deformation keep increasing with load cycles, at higher loading environment.

I appreciate your time.

Upon your site experience, what must done, if the consultant reject part form the work carried out by the contractor?

I am trying to design a pavement using the MEPDG method in africa. since it can be calibrated anywhere how best can i go about the methodology without the AASHTOware software for a thesis?

Upon your site experience, What is the main problems appear when concrete delay two hour during casting?

Within all assumption made on these theories, ... did you think upon your academic and general point of view.. that it will match all cases, .. without no more assumptions...?

From the question that commonly asked by engineers during casting concrete that can we neglect the expansion joints, if the construction of concrete is carried out in summer?

Important question related to applying epoxy adhesive in joints of precast concrete bridge segments.. is that important..?... what will happened if we did not do it...?

For elastomeric bearing, the vertical load is resisted by its compression while shear resistance of the bearing controls the horizontal movements, So, How might the size of elastomeric bearings find out?

Whom concern with prestressing works, always asked about the function of using grouting inside tendon ducts....

For marine piles, there are several options available for selection, namely H-piles, circular pipes and box piles. However, only circular piles and box piles are suitable for marine application... why?

Dear researchers/engineers

I was reviewing a report of a dam monitoring during construction. considering a specific piezometer, it is installed at time t1 and elevation z1. but the casing datum is z2 (near 15 meters above z1). the overburden pressure is zero until t3 days after installation. after t3 the B-value is calculated 1.350. B-value is calculated by this formula : [the piezometric pressure (read at time t4 - initial read)]/[overburden pressure (gamma * elevation at t4 - z2)]

the first thing comes to mind as an issue is without overburden pressure there's an increase in piezometric pressure.

can anyone suggest anything?

Thanks

I am trying to understand the effect of Geocells on Infill material's Young's Modulus. For example if a material as a modulus of 70MPa, how much it will be if was placed in Geocells. (the modulus of the composite of material {infill + Geocells}) ?

Corrosion Technology Forum 2018: Annual losses due to Corrosion are about 75000 crore per annum in India. A major share in this loss is due to corrosion in Chemical and process industries, refineries and petrochemical plants. Is chemical industry is aware of systematic approach to fight corrosion and make their plants safe without loss of production and man days?

How to convert each of these factors (Co2 emission, accident and noise ) to trafic volume or thier effect on the level of service of the highways

I would like to know what works and what does not work to reduce or eliminate this problem.

What is the ideal mixture for granular subbase construction?

Red mud 10%, fly ash 80% and 10% sand have proper binding as well as concreting properties.

As a major sub-branch of civil engineering highway-engineering is a serious concern for the experts around the world, the modifications coming to this field has make several minds thinking about the future of highway or road construction ,

Which technologies will be introduced in the near future? Or far ? Which structured methods will be used? Material analysis?

Road rehabilitation

As pavement starts serving traffic, the distresses propagate in pavements be it concrete or flexible pavements. The distresses increase progressively with time. But in HDM-4, incremental type of predictive models are used only in case of flexible pavement but for concrete pavement absolute models are used. Can anyone mention the reason behind this? 

Which geotechnical parameters are most sensitive during analysis with PLAXIS 3-D software? Is there any available link that demonstrates the analysis procedure briefly? Thanks in advance.

I am doing a traffic assignment on the highway transportation network. Does anybody know how I can find the Origin-Destination table (trip distribution) data?

I need a data for the Shelby County (Memphis) Tennessee, USA.

what is the best and simplest theory to analyse the flexible pavement to find the stress and strain at any point within the flexible pavement?!(I knew that the multi-layer system is the common theory to analyse the flexible pavement but the charts and tables are prepared for specific location and properties)

Hello,

I am trying to do a study on time headway on an urban road that is preceded with a signalized intersection. After gathering the necessary data, I had to do a sampling process to eliminate the trending and periodicity on the data.

I had to eventually divide the data on 2 distinct categories, which are the phases of the preceeding signalized intersection (the intersection has 2 phases with different durations).

Now I am finding myself with two different patterns. in order to study the Time Headway on different trafic levels. I need to define different increments (number of vehicle arriving in a period). Since I have two categories I would have different resulting hour volumes.

Let me give you an example, Phase 1 has a 36s duration and phase 2 has a 29s duration. So for example If I define an increment of 5-9 vehicles per period for the two categories, I would have a 500-900 veh\h for the samples of phase 1 and 620-1117veh\h for the samples of phase 2.

So I am not sure about this. Do I need to define different intervals for each category ? Did I go to far on dividing the data on two categories ? 

Any suggestions are welcome.

P.S : I am not a traffic engineer so I am not familiar with the procedures of time headway study. I am just trying to follow what my fellow researchers did in their papers

Thank you !

i am in the middle of measuring average headway for 5 minutes time interval, how to compute the avg headway if the vehicle are in platoon with the single vehicle in a platoon for 4 consecutive platoon and duration between them are 20sec, 25sec 108sec and 209sec. except for lat platoon consist of 5 vehicle with 5,4,6,7 sec..

How to find this flyash suitable for make bricks or not?. Kindly give your valuable answer.

I am fitting a SPF with Negative Binomial and the ADT was significant and negative. The data corresponds to rural mountainous with low traffic volume. Do you have any possible explanation for this? perhaps a similar experience? suggested references?

Thanks!

I am designing a car park for a univeristy project and am trying to work out the spacings of my RC columns.

From further investigating and researching I have decided that post tensioned beams would be better as they can increase the spans. I've seen in a forum post that someone said to 16m but I am having trouble finding any official specifications to confirm this? Is it possible to have a beam span of this length with post tensioned band beams?

The footprint of my carpark is 82x68m

I would greatly appreciate any light that could be shed on this matter.

Jake

About GPS Bernese daily solution

Can we get access to loose strained daily solution of Bernese software

As we know GAMIT and GIPSY provided daily solutions free access on line(garner.ucsd.edu, Hfiles and yyyy-mm-dd.stacov.loose.gz),

I wonder whether there some free products on Bernese solution, if existtd, please let me know, Thanks.

Best regards.

Xiaoxing He at wuhan university

It looks like the organisations responsible have been changed, with the new IMT, and also that the CCDRs may have their own standards.

In order to fill wheel rutting with micro-surfacing mixture, I need some references or useful papers to study.

Sand or clay particles have adsorbed water, which makes them compressible. There are any enzymatic preparations that react with these particles to reduce the adsorbed water layer. I would like to know which type of enzymatic activity can do this?

I am looking for general explanation on how nano particle can reduce surface friction when used as coating on stainless steel surface

Anyone tried? Or can anyone give me link where I will get a good answer?

The emergence of Trimble Centrepoint RTX solutions (which I will call Generation 4) begs the question as to the comparability of its accuracy when contrasted with traditional high-accuracy (non-GPS) surveying (generation 1); high-accuracy mobile field-mounted single-base GPS (or generation 2); and networked multi-bases solutions (generation 3).

I want to know the different methods of comparing artificial lift systems in order to aid the best decision for selecting the most suitable and appropriate lift system for maximum productivity and profitability.

I am working on flexible pavement for my M.Sc degree dissertation.

First, the work was to determine the stress and strains of lateritic pavement under a repeted load just considering a wheel of the single axle wheel.

Now, the goal is to use a superposition principle to find strains and stress with a dual wheel axle.

PS: nonlinear behavior

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What are the types of emulsifying agents

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Pervious roads can be a key where there is very poor drainage available on roads.

I'm trying to characterise a number of different samples according to presence of fines and set up a basic contamination index for my research. My maths failed me in this approach and I'm wondering whether anyone can suggest how to implement this particular method. What I've done thinking to weighted geometrical averages, is to calculate the exponential of {Σ[(sieve size)i X (percentage passing)i] / Σ(percentage passing)i}. Any ideas?

Could anyone tell me the way to calculate water evaporation heat transfer on a titled plate?