Effect of Clay Content on Alkali-Carbonate Reactive (ACR) Dolomitic Limestone

Milla, Jose; Rupnow, Tyson; Saunders, William

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Effect of Clay Content on Alkali-Carbonate Reactive (ACR) Dolomitic Limestone

2021-07-01
By Milla, Jose ; Rupnow, Tyson ; Saunders, William

File Language:

English

Details

Creators:

Milla, Jose ; Rupnow, Tyson ; Saunders, William
Corporate Creators:

Louisiana Transportation Research Center
Corporate Contributors:

Louisiana. Department of Transportation and Development ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/LA.17/652;Final Report 652
Resource Type:

Tech Report
Geographical Coverage:

Louisiana;United States
Edition:

Final Report, 10/2019 - 05/2021
Corporate Publisher:

Louisiana Transportation Research Center
Abstract:

This study aimed to evaluate whether an aggregate’s clay content plays an overarching role in ACR expansion and deterioration within the limestone sources that have been approved for use in portland cement concrete in Louisiana. A total of 29 aggregate sources from the Louisiana Department of Transportation and Development (DOTD) approved materials list were screened for chemical analysis to determine whether the aggregates were potentially expansive based on their calcium oxide, magnesium oxide, and alumina contents. Twelve out of 29 aggregates were found to be potentially reactive and therefore were selected for concrete prism tests per ASTM C1105 to verify their expansive potential. The results showed that none of the aggregates tested exhibited deleterious expansion after 12 months. In addition, the clay content (based on the aggregate’s alumina composition) did not directly affect the selected group of aggregates’ reactivity.
Format:

PDF
Funding:

LTRC Project Number: 17-1C;SIO Number: DOTLT1000155
Download URL:

https://rosap.ntl.bts.gov/view/dot/60293/dot_60293_DS1.pdf
File Type:

[PDF - 928.15 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:53d0d070e6ec10de1dee3a47de4f36a4ab42fd98ad96777c4b2578c3b5f77a7ca30b90a894373882f24b41a0663ff6dacf24b7e5e216f73cdf30c3d023e544cc

File Language:

English

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