Research Areas

 Environmental 

 Geotechnical 

 Structures and Materials

Civil Engineering Graduate Seminar Series

* For the previous seminars please visit the research groups' pages

Coming Up!

8 April 2013,  12:10-1 PM, Kings S145

NHDOT Geotechnical Test Embankment on Soft Marine Clay

 

An Examination of Alternative (Low Chloride) Winter Deicing Methods for Porous Asphalt

Presenter: Amy Getchell

Advisor: Dr. Jean Benoît

 

Presenter : Heidi Borchers

Advisor: Dr. Thomas Ballestero

 

Bio: Amy graduated from the University of Maine in 2011 with a B.S. in Civil Engineering.  She is currently enrolled in her last semester towards her M.S. in Civil Engineering, focusing in Geotechnical Engineering. 

 

Bio: Heidi Borchers is a Civil Engineering Master’s student with a focus in Water Resources. Her B.S. was obtained in 2009 in Environmental Engineering with a focus in Municipal Processes from UNH. In between her undergraduate and Master’s degrees she worked as a consultant for Nobis Engineering in their Massachusetts office. 

 


 

 

 

 

Abstract: 

This past fall, the New Hampshire Department of Transportation (NHDOT) built a test embankment for the new alignment segment of the proposed Exit 6 Southbound On-Ramp site off Route 4 in Newington-Dover, New Hampshire.  The purpose of the test embankment is to determine effective and efficient treatment for the long-term ground settlement of the local soft marine clay native to the site.  In addition to the test embankment, prefabricated vertical drains (PV drains) were installed to allow pore water from the soil to seep out and accelerate time-rate consolidation. Various in situ field testing methods were performed including: piezocone penetration (CPTU), flat plate dilatometer (DMT) and field shear vane (VST).  In addition, consolidation testing was performed in the laboratory with undisturbed samples of the soft clay.  A finite element analysis is presently being performed using the data collected this summer to predict the behavior of settlement for the clay.  Currently, the NHDOT does not have definite parameters or knowledge of the marine clay to prepare a thorough design for construction.  This research will benefit construction of the site, in addition to many other upcoming sites of construction in the local area.

 

Abstract:

Porous asphalt is designed to filter water through pavement, and as such, behaves much differently than traditional dense mix asphalt commonly used today. Dense mix asphalts are designed to act as a barrier to water penetration. Due to these differences, porous asphalt has created some challenges in colder climates with respect to deicing operations.  It has been found that traditional deicing methods such as applying rock salt do not work as effectively on porous surfaces. This research aims at helping to answer the question of how to effectively deice porous asphalt using liquid brines and alternative deicers (organic deicers) and is building on past research conducted by the UNH Stormwater Center which focused on an in-depth study using rock salt to deice porous asphalt.

The goal of this research is to demonstrate that in addition to plowing, alternative deicers can be used as a partial or complete replacement to traditional rock salt or salt brine used to control snow and ice from porous asphalt (PA).

 

 

Spring 2013 Schedule

Date

Time Slot

Name

Advisor

1st or 2nd seminar

Location

Jan 28

12:10-12:35

Georgian Tutuianu

Medina

1st

Kings

12:35-1:00

Patrick Santoso

Goodspeed

1st

Feb 4

12:10-12:35

Jon Coulp-Yu

Bell

1st

Kings

12:35-1:00

Michael Sudak

Benoit

1st

Feb 11

12:10-12:35

Josh Collins

Malley

1st

Gregg

12:35-1:00

RaeAnna Hughes

Malley

1st

Feb 18

12:10-12:35

Jeff Senders

Collins

2nd

Gregg

12:35-1:00

Margaret King

Kinner

1st

Feb 25

12:10-12:35

Jon Coulp-Yu

Bell

2nd

Kings

12:35-1:00

Jennifer Jencks

Kinner

1st

Mar 4

12:10-12:35

Ransom Horne-Richardson

Collins

1st

Gregg

12:35-1:00

Varouna Appiah

Collins

1st

Mar 18

12:10-12:35

Jennifer Jencks

Kinner

2nd

Gregg

12:35-1:00

Margaret King

Kinner

2nd

Mar 25

12:10-12:35

Annika Mathiasson

Medina

2nd

Kings

12:35-1:00

Georgian Tutuianu

Medina

2nd

Apr 1

12:10-12:35

Patrick Santoso

Goodspeed

2nd

Kings

12:35-1:00

David Salzer

Goodspeed

2nd

Apr 8

12:10-12:35

Amy Getchell

Benoit

2nd

Kings

12:35-1:00

Heidi Borchers

Ballestero

1st

Apr 15

12:10-12:35

Bryan Carignan

Jacobs

2nd

Kings

12:35-1:00

Zachary Scanlon

Gress

1st

Apr 22

12:10-12:35

Marc Gullison

Benoit

2nd

Kings

12:35-1:00

Charles Watkins

Kinner

1st

Apr 29

12:10-12:35

Josh Collins

Malley

2nd

Gregg

12:35-1:00

RaeAnna Hughes

Malley

2nd

May 6

12:10-12:35

Rowen Prescott

Goodspeed

2nd

Kings

12:35-1:00

Michael Sudak

Benoit

2nd