Research
Reports
R&D Home>
Research Reports
PCA's Latest Research Reports
| |
Effect
of Use of Limestone on Various Properties of Portland Cement --
Part II
(SN2891a)
The study presented in this report concentrates on multi-laboratory
comparison of compressive strengths of mortar cubes conducted
in accordance with ASTM C109. The specimens were made from three
independent cement brands. Each cement brand was represented by
two samples: one sample with interground limestone, and a second
sample without limestone. All six cements evaluated in this study
were plant produced under normal operating conditions to comply
with ASTM C 150-04, Standard Specification for Portland Cement.
|
| |
Effect
of Density on Mechanical Properties and Durability of Roller Compacted
Concrete
(SN2940)
Roller compacted concrete (RCC) is a durable, economical, low-maintenance
material for low speed heavy duty paving applications. However,
it is difficult to prepare laboratory specimens to represent field
performance, because RCC is very dry and requires considerable
compactive effort to achieve field densities. The gyratory compactor,
commonly used to prepare hot mix asphalt specimens, may be used
in preparing specimens for laboratory testing. Materials and mix
designs from two industrial paving projects were used to prepare
specimens for comparison. |
| |
Effect
of Portland Cement Fineness on ASTM C 1260 Expansion
(SN2963)
This study is aimed at investigating the effect of portland cement
fineness on the results of ASTM C1260 tests - Standard Test
Method for Potential Alkali Reactivity of Aggregates (Mortar
Bar Method). The effects of clinker alkali content, aggregate
reactivity, and NaOH solution concentration on the mortar expansion
test results were also studied. The results show that mortar bar
expansion was promoted with increased cement fineness regardless
of clinker alkali, aggregate reactivity or soak solution normality. |
| |
Durability
of Ternary Blended Cements in Bridge Applications
(SN2754)
The long-term performance of bridge components can be greatly
influenced by the durability parameters including freeze-thaw
and chloride permeability resistance. Both freeze-thaw resistance
and chloride permeability resistance were tested along with the
compressive strength of 24 high performance concrete (HPC) mixtures.
The effects of binary and ternary blended HPC including silica
fume and fly ash were tested with
respect to freeze thaw resistance and chloride permeability. |
| |
Performance-Based
Approach to Evaluate Alkali-Silica Reaction Potential of Aggregate
and Concrete Using Dilatometer Method
(SN2820)
The proposed performance-based approach provides a direct accountability
for a variety of factors that affect ASR, such as aggregate reactivity
(activation energy), temperature, moisture, calcium concentration,
solution alkalinity, and water-cementitious material ratio. |
2006-2008 PCA Research and Technical Reports
This compilation lists research reports and related technical reports
from PCA's Market Development and Technical Services
Programs. This is the 21st edition of the publication that is updated
annually. For the past 2 years completed publications from
PCA's Research and Technical Services programs are listed by title
and code number. There are 130 research reports
referenced in this document. Click here for
pdf.
Additional Resources
 |
Concrete
Research Library (DVD021)
A searchable compendium of over 1,100 PCA concrete research reports
from 1916 to 2006 on water to cement ratio and long term field
performance of concrete to recent research on alkali-silica reactivity,
high performance concrete, life cycle inventory and masonry.
|
 |
Cement
[Manufacturing] Technical Support Library (DVD020)
This vast and unique compilation of PCA cement literature brings together
in one place over 1,700 PCA reports addressing the chemistry, technology,
properties, and manufacture of portland and other cements. A user-friendly
interface allows easy searching by author, title, keyword, or a combination. |
More reports can be accessed by searching the Bookstore.
|