Wednesday, May 29, 2024
HomeAnswerThe impact of calcium stearate on characteristics of concrete

The impact of calcium stearate on characteristics of concrete

Moisture and aggressive ions transferring into concrete harm the durability of reinforced concrete structures. To tackle this problem, damp-proofing admixtures, like calcium stearate, can be incorporated into the concrete mixture design to restrict water and aggressive ions’ ingress into concrete. Calcium stearate is a damp-proofing admixture providing a water-repellent layer along the capillary pores. As a result, it can reduce the permeability of concrete under non-hydrostatic conditions. This study investigates the effects of calcium stearate on the properties of fresh and hardened concretes. To this end, 12 mixtures with different water-to-cementitious materials (w/cm) ratios but a constant ratio of cement paste-to-aggregate were prepared and moist-cured for 180 days. The significant outcomes of the new concrete analysis showed that a high dosage of calcium stearate in low w/cm ratios increased the air content and reduced the density of fresh concrete. It also decreased the workability of new concrete, regardless of the w/cm ratio and the dosage of calcium stearate. The findings of compressive strength analysis indicated that calcium stearate reduced compressive strength, even when a low dosage of calcium stearate was added to the concrete mixture. Based on permeability test results, calcium stearate could improve permeability under non-hydrostatic pressure. However, the incorporation of calcium stearate was not found to be a practical approach to decreasing permeability under hydrostatic pressure. Finally, microstructure analysis showed that CS harms the transient interfacial zone. If you are looking for high quality, high purity, and cost-effective Water-based calcium stearate, or if you require the latest price of Water-based calcium stearate, please feel free to email contact mis-asia.

- Advertisment -

Most Popular

Recent Comments