Details:

Creators:
Jones, Wesley A. ; House, Mitch W. ; Weiss, W. Jason
Jones, Wesley A. ; House, Mitch W. ; Weiss, W. Jason Less -
Corporate Creators:
Purdue University. School of Civil Engineering
Corporate Contributors:
United States. Federal Highway Administration
Subject/TRT Terms:
[+]
Admixtures Concrete Curing Freeze Thaw Durability High Performance Concrete Lightweight Aggregates Mix Design
Publication/ Report Number:
CDOT-2014-3
Resource Type:
Tech Report
Geographical Coverage:
Colorado
Corporate Publisher:
Colorado. Dept. of Transportation. Research Branch
Abstract:
Internally cured concrete has been rapidly emerging over the last decade as an effective way to improve the

performance of concrete. Internal curing (IC) holds promise for producing concrete with an increased

resistance to early-age cracking and enhanced durability (Bentz and Weiss, 2011). IC is a simple and effective

way to cure concrete. Proper internal curing supplies water that is necessary to relieve stress buildup due to

self-desiccation. Typically this is done using pre-wetted lightweight aggregates (LWAs), as this is the most

commercially available application at the present time. IC has shown reduced autogenous and drying shrinkage

cracking, improved fluid absorption resistance, improved compressive strength, and reduced ion diffusion. It is

becoming increasingly clear that internal curing has great potential for the concrete industry to create a longer

lasting, more sustainable product.

This report specifically examines the freeze-thaw resistance of internally cured concrete. It is shown that

internally cured concrete, using the recommended mixture proportions (i.e., pre-wetted fine LWAs to replace

only the water lost due to chemical shrinkage) is freeze-thaw resistant.

Implementation

Internal curing has shown, as outlined in this report, to be a simple and cost-effective way to create longer

lasting, more durable concrete. The initial cost of a bridge deck concrete can increase in price anywhere from 3

to 10 $/yd3. However, this percentage when compared with the cost of bridge is typically negligible, especially

when considering an increased service live and reduced maintenance cost. CDOT can benefit from this

research by applying what has been presented in this study to create longer lasting, more durable bridge decks.


Format:
PDF
Funding:
22.6
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:c960687cb4c418f7d8bc0f9129fed8b548cd60e636ae574537f1e28ed9972c59
Download URL:
https://rosap.ntl.bts.gov/view/dot/27099/dot_27099_DS1.pdf
File Type:

Supporting Files

• No Additional Files

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