Effect of Defoaming Agents on Mortar
Release Time:
2021-08-23
Source:
Defoamer
Effect of Air-Entraining Agent on the Wet Density of Mortar
Different types of air-entraining agents all lead to varying degrees of increase in the wet density of mortar, with the wet density increasing as the dosage of the air-entraining agent rises.
Effect of Air-Reducing Agents on the Air Content of Mortar
Different types of air-entraining agents all reduce the air content of wet mortar to varying degrees, with the mortar’s air content decreasing as the dosage of the air-entraining agent increases.
Effect of Defoaming Agents on the Compressive Strength of Mortar
Different types of air-entraining agents all lead to varying degrees of increase in the compressive strength of mortar, with the compressive strength increasing as the dosage of the air-entraining agent rises.
Effect of Defoamer on the Flexural Strength of Mortar
Different types of air-entraining agents all lead to varying degrees of increase in the flexural strength of mortar, and the flexural strength of mortar increases with increasing dosage of the air-entraining agent.
The addition of an air-entraining agent results in an increase in the flexural strength of mortar as curing age progresses. In mortar products, the incorporation of this agent does not impede the continued growth of late-age flexural strength. The compressive strength of mortar also increases with curing age, and its addition does not affect the sustained development of late-age compressive strength. While the air-entraining agent significantly enhances early-age compressive strength, its impact on later-stage strength is relatively modest. However, in addition to providing a certain improvement in early-age flexural strength, the agent promotes a sustained increase in late-age flexural strength. At all ages, the compressive-to-flexural strength ratio of mortars containing the air-entraining agent is higher than that of the reference mortar, which itself exhibits an increasing compressive-to-flexural ratio with age.
Effect of Defoaming Agents on the Tensile Bond Strength of Mortar
The addition of a defoaming agent to the mortar results in a moderate increase in the tensile bond strength between the mortar and the concrete slab.
Effect of Air-Entrapping Agents on Water Absorption of Mortar
The addition of an air-entraining agent alters the compactness of the mortar, resulting in varying degrees of reduction in water absorption by the mortar surface layer.
The addition of an air-entraining agent effectively reduces the air content in wet mortar and increases its wet density, thereby significantly improving its physical properties. This results in varying degrees of enhancement in compressive strength, flexural strength, and tensile bond strength. Moreover, it increases the overall compactness of the mortar, which can substantially reduce water absorption in the surface layer.
