2015/01/01 by Cruz María Pía · 1 citation
Engineering · #Grouting, Rheology, and Soil Mechanics #Geotechnical Engineering and Soil Stabilization #Geotechnical Engineering and Analysis #Concretion #Loess #Gypsum #Geology #Geotechnical engineering #Characterization (materials science) #Mining engineering #Geomorphology #Mineralogy #Materials science #Paleontology
paper · doi:10.3233/978-1-61499-603-3-3248
openalex publication_date 2015/01/01 · openalex created_date 2022/10/02 · openalex updated_date 2026/05/21
In this investigation, small gypsum concretions are characterized in primary and secondary pampean loess in Córdoba city (Argentina). The process that gypsum confers some cementation in small concretion depends in the origin of the sediments (primary loess or secondary loess). Gypsum infiltrate for rainwater seepage (leaching and recrystallization) from the surface layers which contain abundant sulfate crystallized amorphous calcium in concretions of primary loess, though, in concretion of secondary loess could be by crystallization in lagoon environment or crystallization around roots of aquatic plants decomposing by the action microbiolítica. Exploration in situ of loess sediments analyzed with gypsum concretions was executed along street Obispo Trejo from campus of National University of Córdoba (UNC), to avenue Pueyrredón. Particularly, the matrix of these sediments has small concretions of gypsum between 4 and 6 meters of depth; which size range varies from 12,500mm to 0,425mm. The separation of gypsum concretions from the matrix sedimentology of loess, was from respecting sampling technique on fully destructured concretions respect structured concretions', according Rinaldi et. al. (2006)[1]. These concretions provide special geotechnical characteristics to this paleo stratigraphy. The characterization of the shape, fabric, distribution, mineralogical and composition, provide global mechanical behavior of soil mass.