2026-04-22T12:51:38Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/76542023-06-21T11:14:02Zcom_10259_4204com_10259_5086com_10259_2604col_10259_5373

Flexural Strength Prediction Models for Soil–Cement from Unconfined Compressive Strength at Seven Days Linares Unamunzaga, Alaitz Pérez Acebo, Heriberto Rojo Arce, Marta Gonzalo Orden, Hernán Soil-cement Cement treated materials Cement treated base materials Flexural strength Unconfined compressive strength Long term Short term Ingeniería civil Materiales de construcción Civil engineering Building materials Soil–cement is an environmentally friendly road construction technique for base and subbase materials, which allows employing soils placed in the right-of-way of the road or in the surroundings, by improving its engineering properties. With this technique, it is possible to reduce the over-exploitation of quarries, the necessity of landfills and the pollutant gas emission due to the reduction of aggregate fabrication and transport. The manufacturing of soil–cement is generally controlled by means of the Uniaxial Compressive Strength (UCS) test at seven days, according to the regulations of each country. Nonetheless, one of the properties that best defines the performance of soil–cement is the Flexural Strength (FS) at long term, usually at 90 days. The aim of this paper is to develop new equations to correlate the UCS and the FS at long term and the UCS at seven days and at 90 days. Obtained results validate the proposed models and, hence, the flexural strength can be predicted from the Uniaxial Compressive Strength at seven days, allowing, if necessary, correcting measures (recalculation or rejection) in early stages of the curing time to be taken. In this research, part of the equipment funded by the Education Council of the Castille and Leon Government of Spain (Junta de Castilla y León) grant number BU009A06 and UB 07/03 was used. 2023-04-20T12:10:47Z 2023-04-20T12:10:47Z 2019-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1996-1944 http://hdl.handle.net/10259/7654 10.3390/ma12030387 1996-1944 eng Materials. 2020, V. 12, n. 3, 387 https://doi.org/10.3390/ma12030387 info:eu-repo/grantAgreement/Junta de Castilla y León//BU009A06//Estudio del comportamiento de los firmes reciclados in situ con cemento en Castilla y León como método sostenible en la conservación de carreteras/ info:eu-repo/grantAgreement/Junta de Castilla y León//UB 07%2F03/ Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess application/pdf MDPI