CEE 1020 Connections to Civil & Environmental Engineering:

L. K. Crouch, Professor of Civil EngineeringBenjamin Mohr, Asst. Professor of Civil Engineering

Introduction to Transportation

Materials & Geotechnical

L. K. Crouch Professor of Civil Engineering

Joined TTU Civil Engineering in 19904 years with Kentucky Department of Transportation Construction DivisionB.S., M.S., and Ph.D. degrees from the University of Missouri-RollaMarried 23 years2 children – Rachel and HannahProfessional Engineer in TennesseeMember of:

•American Society for Testing and Materials•American Concrete Institute

L. K. Crouch Professor of Civil Engineering

Principal research interests are:• Aggregates• Portland cement concrete• Controlled Low-strength Material

Accomplishments•Author of 60 publications•Advisor of 23 successful graduate students•1.3+ million dollars of external research funding at TTU•1998 Brown-Henderson Outstanding Engineering Faculty Award

June 2003 Grand Teton National Park, Wyoming

Ben Mohr, Assistant Professor of Civil Engineering

Joined TTU Civil Engineering in 2005B.S.C.E from the University of DelawareM.S.C.E. and Ph.D. from Georgia Tech

Faculty co-advisor, TTU Chapter of American Society of Civil Engineers (ASCE)

Member of:• American Concrete Institute

• Behavior of Concrete at Early Ages and Materials Science of Concrete Committees

• American Ceramic Society, Cements Division• International Union of Laboratories and Experts in

Construction Materials, Systems and Structures (RILEM)

Ben Mohr, Assistant Professor of Civil Engineering

Principal research interests are:• Durability and chemistry of portland cement-

based materials• Microscopy and imaging of microstructures• Early age behavior of concrete• Fiber-reinforced concrete• Supplementary cementitious materials

Accomplishments• Hold a provisional patent on materials for

internal curing of high performance concrete• Authored 11 publications• 2002-2005 Georgia Institute of Technology

President’s Fellow

Ben Mohr, Assistant Professor of Civil Engineering

Transportation Materials & Geotechnical TopicsPortland Cement Concrete

Transportation Materials & Geotechnical Topics

Aggregates

Transportation Materials & Geotechnical Topics

Controlled Low-strength Materials

Transportation Materials & Geotechnical Topics

Durability and Microstructure of Cement-Based Materials

Transportation Materials & Geotechnical Topics

Hot-mix Asphalt

Soil Mechanics

Pavement Design

Foundation Design

Clay Masonry Units Concrete Masonry Units

Transportation Materials & Geotechnical Courses

Course Required? Faculty Frequency per Year

CEE 3030 Civil Engineering Materials I (3)

Yes CrouchMohr

2

CEE 3040 Geotechnical Engineering Lab (1)

3040 or 3120

Required

BadoeCrouchMohr

1

CEE 4600 / 5600 Civil Engineering Materials II (3)

Elective Crouch 1

CEE 4610 / 5610 Pavement Design (3)

Elective Crouch 1

CEE 4800 Geotechnical Engineering I (3)

Yes RyanCrouchMohr

2

CEE 4990 / 6900 Durability of Cement-Based Materials (3)

Elective/Graduate

Mohr 1

CEE 6300 Composition & Properties of Concrete (3)

Graduate Mohr Crouch

1

Transportation Materials & Geotechnical Courses

Course Topics

CEE 3030 Civil Engineering Materials I (Lecture & Lab)

Aggregates, PCC, and HMA basicsProperty determination in lab

CEE 3040 Geotechnical Engineering Lab

Measuring soil strength, permeability, compressibility, density, moisture, grain size distribution, plasticity

CEE 4600 / 5600 Civil Engineering Materials II (Lecture & Lab)

CLSM, HVFA PCC, Pervious PCC, PCC Formwork, Masonry Material Tests

CEE 4610 / 5610 Pavement Design (Lecture)

Structural Design of HMA and PCC Pavements and Overlays

CEE 4800 Geotechnical Engineering I (Lecture)

50% Soil Mechanics50% Foundation Design

CEE 4990 / 6900 Durability of Cement-Based Materials

ASR, sulfate attack, DEF/SEF, concrete volume changes, freeze-thaw, corrosion

CEE 6300 Composition & Properties of Concrete

Multi-scale analysis of portland cement hydration, PCC properties, HPC, LWC, SCC, and FRC

Transportation Materials Student Competitions

American Society of Civil Engineers Southeastern Regional Student Concrete Strength Competition

First Place: 1994, 1995, 1996, 2000Second Place: 1997, 2006Third Place: 1998, 1999

American Concrete Institute International High-strength Lightweight Student Concrete Cube Competition

First Place: 1995, 1997Second Place: 1996Third Place: 1995, 1998Fifth Place: 1999

Transportation Materials Student Competitions

Transportation Materials Student Competitions

Transportation Materials Student Competitions

Transportation Materials Student Competitions

Are Aggregates & HMA Important?

What about PCC?U.S. Concrete Production in 2004 was 430,500,000 cubic yards

Tennessee 2004 Concrete Production was 6,888,000 cubic yards

L. K. Crouch, Current ResearchProject Sponsor Students Completion

Date

Rapid Repair of Highway and Airfield Pavement Subgrades with CLSM

FHWA HewittByard

April 2008

High Volume Fly Ash PCC TCA HewittByardSelf

December 2006

High Volume Fly Ash PCC Demonstration and Comparison with TDOT Class A PCC

TVA, The SEFA Group, TCA, Ready Mix USA

HewittByardHood

December 2006

Estimating Pervious PCC Pavement Design Inputs with Compressive Strength and Effective Void Content

TCA Hewitt December 2006

Limestone Screenings as Pre-cast PCC Fine Aggregate

TTU Byard May 2007

Ben Mohr, Current ResearchProject Sponsor Students Completion

Date

Transport Kinetics of Internal Curing Water in High Performance Concretes

NSF Hood May 2009

Fractography of Fiber-Cement Composites via Laser Scanning Confocal Microscopy

TTU Hood July 2007

Nano-scale Differences Between Delayed and Secondary Ettringite

Exploratory research at ORNL/TTU

Hood TBD

Rheology of Fresh Fiber-Reinforced Concrete

Exploratory research at TTU

Scruggs TBD

We are Making Materials Greener

(Actually More Environmentally Friendly but we

can also color materials green)

While Enhancing Material Performance

We Helped Rewrite the Book on CLSM

Now FHWA wants us to keep on Going and Going

Get Your Hands Dirty - It’s Fun

Be Part of a Winning Team! (Students Working on Federal Funded CLSM Research)

Transportation Materials & Geotechnical

It’s Fun

It’s Changing the World

Is it the most important part of Civil & Environmental Engineering?

Obviously (and that’s an unbiased opinion)

Just try constructing something without materials!

Enjoy the lab tours & contact us if we can be of assistance:

L. K. Crouch, 372-3196 or lcrouch@tntech.edu

Ben Mohr, 372-3546 or bmohr@tntech.edu