The beam test results showed that the concrete softened for all of the applied compression stress ranges, resulting in a decrease in the concrete elastic modulus and a corresponding increase in the concrete strain (Hefferan et al. 2004).
The illustrated result generally showed a decrease in sorptivity of the concrete samples over time, in agreement with Akindahunsi et al. (2012).
The use of MK and SF as mineral additives caused a decrease in fracture energies of concretes, and this effect is more pronounced in SF blended concretes, while no significant change was observed in the compressive strength developments of the mixtures.
Using polymeric materials in the concrete mix may increase the heat insulation of the concrete, but it also causes a decrease in the compressive strength of the concrete.
However, the load capacity of a compression failure member decreases with a decrease in the compressive strength of concrete when the fluence of neutron radiation increases.
However inclusion of BF in concrete resulted in a decrease in the compressive strength.
The decrease in concrete resistance and the expansion generated in reinforced concrete structures by direct exposure to fire at 400 °C maximum temperature serves as the basis for the present research.
The results of the DSTCs with circular inner steel tubes indicate that concrete-filling inner tubes results in an increase in the ultimate axial stress but a decrease in the ultimate axial strain of concrete compared to those seen in DSTCs with hollow inner steel tubes.
Alkali-aggregate reaction (AAR) is known to cause expansion and cracking in concrete, which adversely affect the mechanical properties of concrete, leading to a decrease in the service life of structures.
It appears that the addition of LWA as an internal curing agent increase the degree of hydration which results in a decrease in the thermal conductivity of the concrete.
