Details:

Corporate Creators:
Missouri University of Science and Technology
Subject/TRT Terms:
[+]
Concrete Construction
Fly Ash
Pavements--Performance
Portland Cement--Additives
Reinforced Concrete--Testing
Abrasion Resistance
Bond Strength (Materials)
Cement Additives
Creep
Economic Impacts
Mix Design
Performance Tests
Portland Cement
Recycled Materials
Reinforced Concrete
Shrinkage

Publication/ Report Number:
TRyy1110
Resource Type:
Tech Report
Geographical Coverage:
Missouri
Edition:
Final report.
Corporate Publisher:
Missouri. Dept. of Transportation
NTL Classification:
NTL-HIGHWAY/ROAD TRANSPORTATION-Design ; NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ;
Abstract:
The main objective of this study was to determine the effect on shrinkage, creep,

and abrasion resistance of high-volume fly ash (HVFA) concrete. The HVFA concrete

test program consisted of comparing the shrinkage, creep, and abrasion performance of

two concrete mix designs with 70% cement replacement with Class C fly ash relative to a

Missouri Department of Transportation (MoDOT) standard mix design.

Modified versions of standard test methods were used for the shrinkage and creep

portions of the study. Shrinkage was measured through a modified version of ASTM

C157 “Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar

and Concrete,” while creep was measured through a modified version of ASTM C512

“Standard Test Method for Creep of Concrete in Compression.” Abrasion resistance was

measured in accordance with ASTM C944 “Standard Test Method for Abrasion

Resistance of Concrete or Mortar Surfaces by Rotating-Cutter Method.”

In addition to comparisons between the three mix designs, the results were also

compared to existing prediction models and previous research results on HVFA concrete.

Both HVFA concrete mixes showed a significant decrease in shrinkage strain relative to

the control concrete, which was very consistent with previous research. With regard to

creep, both HVFA concrete mixes also showed improved performance over the control

mix, again confirming previous research results. However, the control concrete exhibited

improved abrasion resistance relative to the two HVFA concrete mixes, which coincided

with the higher strength of the control mix. At later ages, the abrasion resistance of the

HVFA concrete improved due to late age strength gain characteristic of this material.


Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:9e891399635c26f50de6634d1dd13954f4de9fb1d8d7c77c613f78a54986f06b
File Type:

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