Bridge deck fogging system : evaluation of field implementation of a fogging system used during bridge deck construction.

Selladurai, Ahilan; Newtson, Craig; New Mexico State University. Department of Civil Engineering

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Bridge deck fogging system : evaluation of field implementation of a fogging system used during bridge deck construction.

2008-01-01
By Selladurai, Ahilan ; Newtson, Craig

[PDF-874.24 KB]

English

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Creators:

Selladurai, Ahilan ; Newtson, Craig

Selladurai, Ahilan ; Newtson, Craig Less -
Corporate Creators:

New Mexico State University. Department of Civil Engineering
Subject/TRT Terms:

[+]

Bridge Decks Bridge Superstructures Concrete--Curing Concrete--Drying Concrete Bridges--Floors--Cracking Concrete Bridges--Floors--Design And Construction Concrete Bridges--New Mexico--Floors Concrete Construction Concrete Curing Cracking Cracking Of Concrete Pavements Drying Floors Structural Members
Publication/ Report Number:

NM04STR-02
Resource Type:

Tech Report
Geographical Coverage:

New Mexico
Corporate Publisher:

New Mexico. Dept. of Transportation. Research Bureau
Abstract:

The objective of this research was to implement and evaluate a fogging system used to provide initial cure for a concrete bridge deck construction project. To accomplish this, Bridges 5500 and 5701 along NM26 were selected. Bridge 5500 was placed using the fogging system and Bridge 5701 was placed using conventional curing methods. Since weather conditions influence evaporation rate, weather conditions were monitored throughout the construction processes. A windbreak was erected to reduce the wind speed during the placement and fogging of Bridge 5500. Visual inspections of cracks were conducted 7, 14, 21, 28 and 56 days after the construction of each bridge. Bridge 5500 exhibited substantially more cracks than Bridge 5701. The additional cracking in Bridge 5500 is attributed to more severe evaporation conditions during placement and inefficiencies associated with the fogging system. Cracking occurred in both bridges to concrete that was exposed to evaporation rates that exceeded 0.1 lb/ft2/hr.
Format:

PDF
Funding:

C04759
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:085ea5ad779d4d8cb84b83b89a4ad87bf898b7b0f8753e9f820d9fd90ba048c6
Download URL:

https://rosap.ntl.bts.gov/view/dot/23318/dot_23318_DS1.pdf
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Bridge deck fogging system : evaluation of field implementation of a fogging system used during bridge deck construction.

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