@article{ajcea20241221,
author={{Some, Donzala D. and Yameogo, Ohindemi G. and Thon, Magai N.},
title={Influence of Water-Cement Ratio on the Strength Distribution inside a Soil-Cement Material},
journal={American Journal of Civil Engineering and Architecture},
volume={12},
number={2},
pages={24--29},
year={2024},
url={https://pubs.sciepub.com/ajcea/12/2/1},
issn={2328-3998},
abstract={In the domain of soil-cement, especially within the deep mixing method (DMM), various factors influence the strength of cement-stabilized soft soils. These factors include soil candidate consistency parameters, cement content, water-cement ratio (W/C), mixing time, and curing time. Notably, a lower W/C ratio resulted in a higher unconfined compressive strength (<i>q</i><SUB><i>u</i></SUB>). However, in the context of improving soft and cohesive soils through DMM, a W/C ratio of 1.0 has conventionally been recommended due to its favorable resistance. In the case of the Saga lowland, where a soft cohesive soil with high compressibility and low strength is prevalent, the standard practice employs a W/C ratio of 1.0 with a selective amount of cement for different layers, in most projects. This research introduces an innovative approach: utilizing a higher W/C ratio of 1.5 with a cement content of 110 kg/m3, to fulfill the standard strength requirement and above all, to have a well-distributed strength inside the material. This could prevent the lateral displacement of the soil-cement columns. Through laboratory experiments, this paper investigates the effects of increasing W/C on the strength distribution. As result, the comparison between the needle penetration strength (<i>q</i><SUB><i>unp</i></SUB>) /C= 1 and 1.5 showed that the latter represents a slight reduction in strength, but it is more uniformly distributed. This approach is designed to a bolster support for the existing infrastructure in the Saga lowland. The significance of this study in the field of DMM lies in advocating for an increased W/C ratio to ensure not only the quality of the mixture but also, more importantly, the uniformity of strength within the soil-cement columns.},
doi={10.12691/ajcea-12-2-1}
publisher={Science and Education Publishing}
}