Introduction
The objective of this paper is to investigate and analyse the elasticity, leaching and carbonation properties of sulphur, nitrogen and carbon as joint penetrating agents (SPC), and their respective process parameters. There are several factors that could cause the variation in SPC properties, such as the particle size, temperature, concentration, chemical compound compositions and process parameters. This paper will analyse the influence of each factor on the SPC properties and the process parameters based on existing research findings and experimental data obtained from experimental studies.
Elasticity of sulphur, nitrogen and carbon as joint penetrating agents
The mechanical properties of SPC can be divided into three aspects: breaking strength, elasticity, and creep resistance. The breaking strength is related to the material strength and the ability to absorb energy. Elasticity is the ability of a material to recover its original shape after undergoing deformation. Creep resistance is the ability of a material to withstand the effects of time-dependent, constant load.
Breaking strength is an important property of SPC since it determines the durability of concrete and structures built with it. In general, the larger the weight and size of the SPC particles, the better the breaking strength. However, it is also important that the particles do not crack, particularly during curing. For this reason, particle size should be taken into consideration when selecting SPC products. Temperature can also affect the breaking strength of SPC. At low temperatures, the breaking strength decreases, while at higher temperatures, it increases.
The elasticity of SPC also affects its performance as a penetrating agent. Elasticity is the ability of a material to deform and recover its original shape upon the removal of an external force. The elasticity of SPC is dependent on its concentration, chemical compound compositions and process parameters. The relatively low concentration of SPC is elastic enough to allow penetration, while higher concentrations may be too elastic and may instead block the passage of other admixtures in the concrete. In addition, the elasticity of SPC is also affected by its particle size, temperature, and chemical compound composition.
Leaching and Carbonation Properties Of sulphur, nitrogen and carbon as joint penetrating agents
Leaching and carbonation are two important properties of SPC that must be considered when selecting the appropriate product. Leaching is the gradual release of contaminants from a material into a fluid (e.g. water or other liquid). Carbonation occurs when a material reacts with carbon dioxide, resulting in the formation of calcium carbonate or other carbonate compounds. Leaching and carbonation can both occur rapidly and must be taken into consideration when selecting SPC products.
The leaching rate of SPC depends on the particle size, temperature, and concentration. The smaller the particle size, the more contaminants can leach. In addition, higher temperatures can increase the leaching rate. Furthermore, high concentrations of SPC can also increase the leaching rate. Carbonation depends on the type of chemical compound in the SPC. Calcium carbonate is most commonly used to provide the necessary carbonation properties, and it is more efficient at higher concentrations.
Process Parameters
Process parameters can influence both the properties and performance of SPC. The most important parameters are mix time and mixing temperature. Mix time determines how long the SPC will be mixed into the concrete, and higher mixing temperatures can result in better penetration of the SPC into the concrete. Other parameters such as water-to-cement ratio, air content and slump can also affect the performance of SPC, but to a lesser extent.
Conclusion
In conclusion, SPC properties are dependent on several factors such as particle size, temperature, concentration, chemical compound compositions and process parameters. Elasticity, leaching and carbonation properties are all important aspects that should be taken into consideration when selecting SPC products. The process parameters, such as mix time and mixing temperature, can influence the properties and performance of SPC.
