RT info:eu-repo/semantics/article
T1 Shape Coefficient for Soil-Cement: Experimental Determination from Cylindrical and Cubic Specimens
A1 Pérez Acebo, Heriberto
A1 Linares Unamunzaga, Alaitz
A1 Aragón Torre, Ángel
A1 Gonzalo Orden, Hernán
K1 K shape coefficient
K1 Soil-cement
K1 Cement-treated base material
K1 Unconfined compressive strength
K1 Cylindrical specimen
K1 Cubic specimen
K1 Ingeniería civil
K1 Civil engineering
K1 Materiales de construcción
K1 Building materials
K1 Cemento
K1 Cement
AB The compressive strength is the primary parameter used for the design, control, and performance assessment of cementitious materials. However, this value is strongly influenced by specimen geometry, which has led to the introduction of shape coefficients to convert compressive strength results between different specimen types, particularly between cubes and cylinders. While this topic has been extensively investigated in concrete, very limited research has addressed the shape coefficient in soil-cement or cement-treated base materials, despite their widespread use in pavement construction. Aiming to bridge this gap, this study systematically analyzes the unconfined compressive strength (UCS) of soil-cement specimens with different geometries. Two soil-cement mixtures with distinct physical and chemical characteristics were tested at various curing ages (7, 28, and 90 days) using cylindrical specimens (150 mm diameter × 180 mm height) and cubic specimens (150 mm edge). The results show that the UCS in cylindrical specimens (UCScyl) was consistently higher than that of cubic specimens (UCScub), although the difference decreased with increasing compressive strength. By combining all datasets, a single conversion factor of 1.04 was derived, resulting in an equation, UCScyl = 1.04·UCScub, with an excellent determination coefficient (R2 = 0.99), enabling reliable conversion between cubic and cylindrical UCS results for soil-cement.
PB MDPI
YR 2025
FD 2025-11
LK https://hdl.handle.net/10259/11156
UL https://hdl.handle.net/10259/11156
LA eng
NO This research was funded by the Education Council of the Castille and Leon Government of Spain, under grant numbers BU009A06 and UB 07/03, and by the Provincial Council of Biscay (Bizkaiko Foru Aldundia/Diputación Foral de Bizkaia), under grant number 5/12/IV/2023/00005, ARASC project, of the grant program aimed at promoting innovation in road infrastructure 2023, and under grant 5/12/IV/2024/00005, ARASC 2 project, of the grant program aimed at promoting innovation in road infrastructure 2024. Additionally, financial support was provided through research contracts with Asfaltos Uribe, S.A., under contract numbers 2024.0037, 2024.0819, W58A06, W40B06, W25C06, and W57B06
DS Repositorio Institucional de la Universidad de Burgos
RD 19-abr-2026