Márcio Felipe Floss

Parameters Controlling Tensile and Compressive Strength of Artificially Cemented Sand

The enhancement of local soils with cement for the construction of stabilized pavement bases, canal lining, and support layer for shallow foundations shows great economical and environmental advantages, avoiding the use of borrow materials from elsewhere, as well as the need of a spoil area. The present research aims to quantify the influence of the amount of cement, the porosity, and the voids/cement ratio in the assessment of unconfined compressive strength qu and splitting tensile strength qt of an artificially cemented sand, as well as in the evaluation of qt /qu relationship. A program of splitting tensile tests and unconfined compression tests considering three distinct voids ratio and seven cement contents, varying from 1 to 12%, was carried out in the present study. The results show that a power function adapts well qt and qu values with increasing cement content and with reducing porosity of the compacted mixture. The voids/cement ratio is demonstrated to be an appropriate parameter to assess both qt and qu of the sand-cement mixture studied. Finally, the qt /qu relationship is unique for the sand-cement studied, being independent of the voids/cement ratio. DOI: 10.1061/ASCEGT.1943-5606.0000278 CE Database subject headings: Tensile strength; Compressive strength; Soil cement; Compacted soils. Author keywords: Tensile strength; Compressive strength; Soil cement; Compacted soils.

Variables Controlling Strength of Artificially Cemented Sand: Influence of Curing Time

The present research aims to quantify the influence of the curing time period, amount of cement, porosity, and voids/cement ratio in the assessment of unconfined compressive strength (qu) of artificially cemented sand. A program of unconfined compression tests considering distinct curing time periods (t), porosities (η), and cement contents (C) was carried out in the present study. It has been found that a power function adapts well unconfined compressive strength values with increasing cement content and with reducing porosity of the compacted mixture. As expected, the unconfined compressive strength of the cemented sand increases with an increasing curing time period. It was also shown that the voids/cement ratio (η/Cv) is a good parameter in the evaluation of the unconfined compressive strength of the cemented sand studied, for the whole range of cement and porosities studied, at each specific curing time period studied. Finally, a unique relationship can be achieved linking the unconfined compressive ...

Broad-Spectrum Empirical Correlation Determining Tensile and Compressive Strength of Cement-Bonded Clean Granular Soils

AbstractBased on a large database of unconfined compressive strength (qu) and splitting tensile strength (qt) results of cement-bonded clean granular soils with varying characteristics, distinct po...

AVALIAÇÃO DAS RESISTÊNCIAS À COMPRESSÃO SIMPLES E TRAÇÃO DE RESÍDUO DE ÁGATA ARTIFICIALMENTE CIMENTADO

This study aims to evaluate the use of a rational dosage methodology of soil/cement using a semi-precious stones by product, analyzing the cement content, porosity and voids / cement through unconfined compressive strength (qu) and splitting tensile strength (qt)of an artificially cemented waste samples. A program test, varying the porosity (η) and the cement content (C) was used in this study. It was found that a power function adapts well to the unconfined compressive strength values as well as with increasing cement content and reducing the porosity of the compacted mixture. It was also shown that the ratio of voids / cement (η / Civ) is a good parameter for evaluating the unconfined compressive strength and splitting tensile strength for by products / cement samples for all cement and porosity levels. It was also possible to find a unique relationship between (qt /qu) of the material, regardless of empty relationship voids/cement, resulting in the ratio of 0.14. Keywords: Soil-cement; Agate Residue; Fine Sand; Compressive Strength; Tensile Strength.