Phase I: Evaluation of Low Flexural Strength for Northern Nevada Concrete Paving Mixtures

Duffala, Nicole; Stempihar, Jeff; Van Dam, Thomas; Schmalzer, Peter; Ghafoori, Nader; Sutter, Lawrence; Corkhill, Roger

i

Phase I: Evaluation of Low Flexural Strength for Northern Nevada Concrete Paving Mixtures

2017-07-01
By Duffala, Nicole ; Stempihar, Jeff ; Van Dam, Thomas

File Language:

English

Details

Creators:

Duffala, Nicole ; Stempihar, Jeff ; Van Dam, Thomas ; Schmalzer, Peter ; Ghafoori, Nader ; Sutter, Lawrence ; Corkhill, Roger
Corporate Creators:

Nichols Consulting Engineers
Corporate Contributors:

Nevada. Dept. of Transportation
Subject/TRT Terms:
Publication/ Report Number:

665-15-803
Resource Type:

Tech Report
Geographical Coverage:

United States ; Nevada
TRIS Online Accession Number:

01652281
Corporate Publisher:

Nevada. Dept. of Transportation
Abstract:

Production paving grade concrete in Northern Nevada having acceptable strength is universally acknowledged to be difficult; however understanding why this is true remains elusive. Current practice is to meet flexural strength requirements by using mixtures with high cementitious materials contents and low water/cement ratios (w/cm), which can negatively impact cost, workability, shrinkage, and durability. There are multiple factors that can contribute to poor concrete strength. Most focus on the characteristics of the interface that develops between the hydrated cement paste and the aggregate which can be compromised by localized high w/cm, the presence of coatings, and/or clustering of air bubbles at the aggregate surface. An experimental plan has been developed for Phase II of this study to evaluate the factors contributing to poor flexural strength of paving grade concrete produced in Northern Nevada with the purpose of developing cost effective solutions to improve the situation.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/35394/dot_35394_DS1.pdf
File Type:

[PDF - 2.07 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:b50e62ab99d8491dbad0f94cb179c5ba81d6660047d1d618cc567d0806001af3

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.