Abstract
The objective of this study is to analyze the effect of the air entrainment on the fresh rheological properties as well as on the compressive mechanical resistances of the mortars. The hardened concrete contains a certain amount of randomly spread air, coming either from a drive during kneading or from the evaporation of the mixing water. The air quantity is in the order of 20 l / m3, ie 2% of the volume. However, the presence of a large volume of air bubbles causes the mechanical resistances to fall in compression. On the other hand, the use of air entrainment could improve the rheological properties of fresh concrete. Experimental studies have been carried out to study the effect of air entrainment on compressive strength, density and ingredients of fresh concrete mix. During all the study, water cement ratio (w/c) was maintained constant at 0.5. The results have shown substantial decreasing in water and mortar density followed with decreasing in compressive strength of mortar. The results of this study has given more promising to use it as a guide for mortar mix design to choose the most appropriate concrete mix design economically.
Highlights
Air entrained concrete consider one of the important discovery made in concrete technology. It is well-known that AEA can improve the workability of the fresh concrete and improve the frost resistance and permeability of the hardened concrete
It has a practical and theoretical significance to research the influence of air entraining agent on mortar and concrete rheological properties and bubble characteristic parameters
Z., studied the research of air entraining agent on concrete rheological properties and bubble characteristic parameters effect, it found that air entraining agent decreased concrete compressive strength, slightly added concrete flexural strength, and folding compression ratio increased significantly
Summary
Air entrained concrete consider one of the important discovery made in concrete technology. It is well-known that AEA can improve the workability of the fresh concrete and improve the frost resistance and permeability of the hardened concrete. It has a practical and theoretical significance to research the influence of air entraining agent on mortar and concrete rheological properties and bubble characteristic parameters. Y. Jiang, Z., , studied the research of air entraining agent on concrete rheological properties and bubble characteristic parameters effect, it found that air entraining agent decreased concrete compressive strength, slightly added concrete flexural strength, and folding compression ratio increased significantly.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call