FHWA SmartCure

2009 PCCP WorkshopIndiana

By: Sabrina Garber

Overview

What is SmartCure?How does SmartCure work?Why is SmartCure useful?Who can use SmartCure?

What is SmartCure?

Born out of the CP Road Map – ND TrackPart of an Intelligent Construction System for Concrete Paving and Bridge Decks/Overlays

What is SmartCure?

Warns of possible curing problemsMeasures and logs:

Weather (temperature, wind, humidity)Fresh concrete temperaturesEquipment location & speed

Enhances maturity testing for strength prediction

Evaporation

Bleeding

13

:50

9:1

0

10

:25

11

:30

12

:38 Time since

placement8:0

8

Legend:

2.5 0

0.5

1.0

1.5

2.0

Critical Evaporation (kg/m2)

7:0

0

0.0

7

1.3

5

1.2

8

0.8

5

0.3

2

0.1

8

1.2

5

1.1

8

1.0

2

0.7

2

1.1

21

.25

1.2

11

.25

Critical Evaporation 24+00 to 26+00

79%

5.2 mph

90%

What is SmartCure?

GPS Receiver(PCMCIA Card) Tablet PC

(or Similar)

1-Wire®

USB Adapter

Infrared Pyrometer

1-Wire®

Weather Station

Miniaturized Weather Station, GPS, and Software System

1-Wire®

Humidity Sensor

Who is SmartCure for?

SmartCure is being developed as a toolfor the contractor in the field.

It is for YOU!

The parts:

How does SmartCure work in the field?

How does SmartCure work in the field?

Monitors weather and concrete temperatureCalculates evaporation ratesPredicts set timesAlerts of critical situationLogs position

What does SmartCure do?

Use double coat of liquid curing compound

How does SmartCure work?

How does SmartCure work?If evaporation rate > 0.20 then use Double Shot of Cure

How does SmartCure work?

Logging Data in SmartCure

30.370

30.380

30.390

30.400

30.410

30.420

30.430

30.440

30.450

-97.803 -97.783 -97.763 -97.743 -97.723 -97.703 -97.683

Latitude

Long

itude

Smartcure - GPS Information

Tracking of Distance Between Paver and Curing Cart

Houston, Texas

Where:

Houston, Texas

When:

June 18, 2007

Project name:

TxDOT Expansion of US-59

Contractor:

Zachry

Laptop housing on back of cure cart where operator stands…

Cure cart as seen from behind…

Overland Park, Kansas

Where:

Overland Park, Kansas

When:

August 15 and 16, 2007

Project name:

KDOT widening of I-435

Contractor:

Clarkson

There was no cure cart!

Weather Station

Laptop Housing

IR Thermometer suspended over fresh concrete held in place by laptop operator

Kansas City, Missouri

Where:

Kansas City, Missouri

When:

August 17, 2007

Project name:

MoDOT reconstruction and realignment of SH 71

Contractor:

ClarksonCure cart as seen from behind…

Laptop housing mounted on cure cart’s toolbox

Weather Station

Martinsburg, West Virginia

Where:

Martinsburg, West Virgina

When:

September 24 and 25, 2007

Project name:

SR 9 Project

Contact:

Mike Durst with HI-Way Paving Inc.

Field Validation Testing

What is the Future for SmartCure?

Increase practicality for the field:WirelessHand-heldIncorporated onto the cure cart by the manufacturer

What is the Future for SmartCure?

Conclusion

SmartCure helps contractors ensure that they are getting a good cure – can it keep from replacing slabs??SmartCure logs info on temperature and production – info that can optimize operation??SmartCure records weather info by station – can it explain “problem” areas if they occur??Additional adjustments planned: wireless version, text messaging, more visual interface

Any questions?