ABSTRACT
This article presents an experimental study to analyze the mechanical properties of a soil stabilized with ordinary Portland cement (OPC) under a sustainable approach consisting of a significant substitution of OPC for sugarcane bagasse ash (SCBA) to reduce the quantity of cement used in the stabilization, reaching the necessary mechanical requirements for its use as a subgrade layer. Soil specimens were elaborated with 3%, 5%, and 7% OPC as a stabilizing agent by weight of the soil. These mixtures were then partially substituted with 25%, 50%, and 75% SCBA, with these percentages being by weight of the stabilizer (OPC). Compaction, compressive strength, and California bearing ratio (CBR) tests were performed to evaluate the mechanical properties of the specimens. The results indicate that a 25% substitution of OPC by SCBA shows a similar performance to the mixture with only Portland cement, so a reduction in OPC use can be made. Further, with a substitution of 100% OPC by SCBA, the CBR of natural soil without stabilizers is improved.
ABSTRACT
En 53 niños eutróficos de 13-60 meses de edad, 27 masculinos y 26 femeninas analizamos la correlación entre la edad ósea, el peso, la estatura, edad ponderal y edad estatural, encontrando que el peso y la edad ponderal presentan una mejor correlación (r = 0.82) con la edad ósea que la estatura y la edad estatural (r = 0.75). El peso en las niñas se correlacionó mejor (r = 0.91) que en los niños (r = 0.77), mientras que la correlación de la estatura con la edad ósea superior en los varones (r = 0.80) que en las hembras (r = 0.72)
