Effect of moisture content of concrete on water uptake

2010 ◽  
Vol 40 (1) ◽  
pp. 102-108 ◽  
Author(s):  
P. Rucker-Gramm ◽  
R.E. Beddoe
Keyword(s):  
Moisture Content ◽  
Water Uptake ◽  
Effect Of Moisture

Effect of Moisture Absorption on the Bending Strength of Carbon/Epoxy Composites with Voids

2011 ◽  
Vol 311-313 ◽  
pp. 165-168
Author(s):  
A Ying Zhang ◽  
Jian She Zhang ◽  
Jia Zhi Wang ◽  
Di Hong Li ◽  
Dong Xing Zhang ◽  
...  
Keyword(s):  
Moisture Content ◽  
Water Uptake ◽  
Immersion Time ◽  
Room Temperature ◽  
Moisture Absorption ◽  
Bending Strength ◽  
Experimental Results ◽  
Epoxy Composites ◽  
Effect Of Moisture

The effects of voids on the bending strength of T300/914 laminates that exposed to room temperature, hygrothermal and drying environment was discussed in this paper. The experimental results revealed that the saturated moisture content and the rate of water uptake increased with porosity increasing from 0.71% to 1.50%, which proved that voids facilitate moisture absorption. The bending strength of the unaged, aged and dried specimens were characterized and analyzed. The results revealed that the bending strength of the aged specimens decreased with the increasing void contents and immersion time. Compared to the unaged specimens, the bending strength of the aged specimens decreased 13.33% and 18.78% with porosity of 0.71% and 1.50%, respectively. The bending strength of the dried specimens was higher than that of the aged specimens and lower than that of the unaged specimens in the case of similar porosity.

scholarly journals Effect of Moisture Content on the Processing and Mechanical Properties of a Biodegradable Polyester

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1616
Author(s):  
Vincenzo Titone ◽  
Antonio Correnti ◽  
Francesco Paolo La Mantia
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Moisture Content ◽  
Mechanical Testing ◽  
Hydrolytic Degradation ◽  
Slight Reduction ◽  
Biodegradable Polyester ◽  
Molding Process ◽  
Elongation At Break ◽  
Effect Of Moisture

This work is focused on the influence of moisture content on the processing and mechanical properties of a biodegradable polyester used for applications in injection molding. The pellets of the biodegradable polyester were exposed under different relative humidity conditions at a constant temperature before being compression molded. The compression-molded specimens were again placed under the above conditions before the mechanical testing. With all these samples, it is possible to determine the effect of moisture content on the processing and mechanical properties separately, as well as the combined effect of moisture content on the mechanical properties. The results obtained showed that the amount of absorbed water—both before processing and before mechanical testing—causes an increase in elongation at break and a slight reduction of the elastic modulus and tensile strength. These changes have been associated with possible hydrolytic degradation during the compression molding process and, in particular, with the plasticizing action of the moisture absorbed by the specimens.

Structural Changes on Charring Woods of Dichrostachys and Salix from Southern Africa: The Effect of Moisture Content

IAWA Journal ◽  
1986 ◽  
Vol 7 (3) ◽  
pp. 243-250 ◽  
Author(s):  
Juliet Prior ◽  
K. L. Alvin
Keyword(s):  
Moisture Content ◽  
Southern Africa ◽  
Structural Changes ◽  
Initial Increase ◽  
Dichrostachys Cinerea ◽  
Chemical Changes ◽  
Structural Alterations ◽  
Wood Pyrolysis ◽  
Effect Of Moisture ◽  
Physical And Chemical

Air-dried and saturated cubes of fully developed wood of Dichrostachys cinerea (Leguminosae) and Salix subserrata (Salicaceae) were charred for 60 minutes at 400°C. An initial increase in moisture content caused few structural alterations in Salix but in Dichrostachys it resulted in considerable ray distension and massive deformation of non-gelatinous fibres. An attempt is made to correlate these observations with the physical and chemical changes known to occur during wood pyrolysis.

The effect of moisture content in fibre laser cutting of pine wood

2011 ◽  
Vol 49 (9-10) ◽  
pp. 1139-1152 ◽  
Author(s):  
Juan Carlos Hernández-Castañeda ◽  
Huseyin Kursad Sezer ◽  
Lin Li
Keyword(s):  
Moisture Content ◽  
Laser Cutting ◽  
Fibre Laser ◽  
Pine Wood ◽  
Effect Of Moisture
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