Development of Specifications for Portland-Limestone Cement

Elahi, Md Manjur A; Shearer, Christopher R

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Development of Specifications for Portland-Limestone Cement

2019-01-31
By Elahi, Md Manjur A ; Shearer, Christopher R

File Language:

English

Details

Creators:

Elahi, Md Manjur A ; Shearer, Christopher R
Corporate Creators:

South Dakota School of Mines and Technology
Corporate Contributors:

South Dakota. Department of Transportation. Office of Research ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

SD2016-04-F
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

South Dakota. Department of Transportation. Office of Research
Description:

Sulfate attack can occur in concrete due to external sulfate ions reacting with hydrated cement paste. The sulfate attack resistance of portland-limestone cements (PLCs) has been questioned due to their high limestone content, which has the potential to initiate a rare type of sulfate attack that forms thaumasite. This research evaluates the performance of portland-limestone cements in sulfate prone environments by investigating changes in the physical, chemical, and mechanical properties of specimens. Mortar and paste specimens prepared by replacing Type I/II and Type V cement with 4.4, 10, 14.6 and 20 percent of calcitic and dolomitic limestone powders and fly ash are examined for their sulfate resistance. An accelerated cube test for measuring strength loss due to sulfate attack was developed using 33,800 ppm sodium and magnesium sulfate solutions at 5°C and 23°C. Results from this testing are compared to ASTM C1012 expansion measurements. The physical and chemical transformation in paste specimens are analyzed using visual observation, mass loss measurements, and X-ray diffraction.
Format:

PDF
Funding:

311274
Download URL:

https://rosap.ntl.bts.gov/view/dot/72493/dot_72493_DS1.pdf
File Type:

[PDF - 5.38 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:d467932deda42ba6c785139ba316519339b39f1883b1ce4c0dfc143e7222b7239d4005e8691a89a2652d2de235a611a176e1bef88a703650a067c03f23817cec

File Language:

English

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