Analysis of the Compressive Strength of Concrete Adding Foam with a density of 55kg/m3 based on Sodium Lauryl Sulfate

Carrion Rabanal K.N.; Carrero Llatas M.N.; Goicochea Huamán H.J.; Quiroz Infante F.Y.; Gaona Abanto E.A.E. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2024) · DOI: 10.18687/laccei2024.1.1.472

Resumen

The study is based on adding 2.5% of Sodium Lauryl Sulfate with respect to the weight of the cement, to generate a lightweight concrete, the objective was to investigate the effect that the foaming agent generates on the resistance of the concrete. A total of 6 cylindrical concrete probes were made, 3 with the addition of foam with a density of 55kg/m3 and 3 without the addition of foam. The specimens were removed from the formwork 24 hours after production to be immersed in water for curing for 28 days and then the compression test was carried out and compared between both types of concrete. The results of the concrete with foam addition had a slump of 6.858cm (2.7”), the weights of the specimens were 10.6kg, 10.7kg and 10.9kg and their compressive strength at 28 days was 95.6kg/cm2 96.9kg/cm2 and 97.5kg/cm2; The results of concrete without foam addition had a slump of 3,048cm (1.2”), with weights of 12.1kg, 12.5kg and 12.6kg, the resistance achieved after 28 days was 185.5kg/cm2 186.7kg/cm2 and 192.3kg/cm2. It is inferred that the addition of Sodium Lauryl Sulfate has a negative impact on the compressive strength of concrete. These observations highlight the importance of considering the use of admixtures to produce concrete with new specifications.

Instituciones: Universidad Privada del Norte