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Microstructure of fine Clay soils Stabilized with Sugarcane Molasses

Open Journal of Civil Engineering 2022年第2期12卷 247-269页

作者： Narcisse Malanda Nice Ngouallat Mfoutou Erman Eloge Nzaba Madila Paul Louzolo-Kimbembe National Upper Polytechnic School Marien Ngouabi University Brazzaville Republic of Congo Department of Chemistry Biochemistry and Physics and Hydrogen Research Institute University of Quebec in Trois-Rivières Trois-Rivières Canada National Upper Education School Marien Ngouabi University Brazzaville Republic of Congo

Sugar cane molasses has proved cohesive and excellent performance on soil aggregates (fine particles). However, the microstructure of consolidated soil by the molasses is not yet subjected to research. The analysis results of sample without molasses (0%) and consolidated samples at 8%, 12%, and 16% show that the molasses acts on the structure of clayey fine soil developing its microstructure of airy matrix type (sample without molasses (0%) to a microstructure of a qualified type, more solid. Consolidated samples to 8%, 12%, 16% of molasses). We also observe the presence of inter-aggregate pores (mesopores) of similar size in all samples. The results of porosimetrical analyses (BJH) of the sample without molasses and consolidated samples to 8%, 12%, and 16% show that simultaneous porous volumes of samples are reduced with the increasing of molasses quantity. This latter, therefore, acts on the porous volume (micropore 2 nm and mesopore 9 nm) by reducing them which really means, molasses occupies the porous volume of the sample. However, this sample seems not to have any effect on the size of mesopores 9 nm. Thus, this product induces the evolution of the soil structure towards the highly dense and condensed structure. Consequently, materials in consolidated soil by molasses will have mechanical properties far superior to those of materials consolidated soil without molasses.

关键词： Microstructure Consolidated clayey fine soil Molasses of Sugar Cane Mesopore Micropore Specific Surface Area

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Adsorption Isotherm of BET Nitrogen of Concretes with Consolidated soil by Sugar Cane Molasses

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材料科学与工程（中英文B版） 2022年第3期12卷 78-96页

作者： Nice Ngouallat Mfoutou Narcisse Malanda Erman Eloge Nzaba Madila Paul Louzolo-Kimbembe National Upper Polytechnic School Marien Ngouabi UniversityBrazzaville BP.69Congo Department of Chemistry Biochemistry and Physics and Hydrogen Research InstituteUniversity of QuebecTrois-RivièresQuébecG9A5H7Canada Upper School of Education Marien Ngouabi UniversityBrazzaville BP.69Congo

Sugar cane molasses is often poured out on roads with soil in the city of Nkayi,Republic of Congo in order to reduce the *** physical adsorption has allowed us to collect information on the state of the accessible total area according to the quantity of sugar cane *** adsorption isotherms,the specific area,the adsorbed quantity of nitrogen on a Qm mono layer,the number of molecules constituting the adsorbed sugar cane molasses(n′)have been *** obtained results show that the quantity of sugar cane molasses in the material does not modify the adsorption isotherm of nitrogen of type IV that remains and a hysteria loop of type H4 in all samples,this justifies the monocoat-multicoat adsorption mechanism with capillary condensation and mesopores presence in the structure of *** with elaborated raw soil by clayey fine soil used are mesoporous *** of 50×1018 molecules constituting sugar cane molasses occupy the extreme area accessible to soil clay,without occupying on accessible sites.

关键词： Isotherm adsorption BET(Brunauer Emmet and Teller)specific area clayey fine soil sugar cane molasses

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