A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Macro–Micro Characterization of Green Stabilized Alkali-Activated Sand
https://orcid.org/0000-0001-6028-9115
Abstract Despite the natural bearing capacity of soils, it is common to encounter materials that are not suitable for earthworks purposes. Several techniques emerged as solutions to this problem, such as soil densification, soil stabilization, and soil reinforcement. In the case of soil stabilization, ordinary Portland cement remains as the main adopted binder even though its poor environmental performance. To achieve a more sustainable alternative, the present research investigated the role of influential factors on the strength development in alkali-activated sand, ground glass fiber (GGF) and carbide lime (CL) blends, as well as the physical, chemical, morphological and thermal characterization of these materials and their reaction products. The strength behavior was analyzed through unconfined compression and pulse velocity tests. The results showed strength and stiffness increases up to 5.00 MPa and 5.11 GPa for strength and stiffness, respectively. The adjusted porosity/volumetric binder content index (η/Biv0.28) demonstrated to be an effective tool to express the mechanical performance of the proposed blends. The blends with molar ratios of CaO/$ SiO_{2} $ = 1 presented the highest strength and stiffness increases. Finally, hydration products were detected and identified as rosenhahnite ($ Ca_{3} $($ Si_{3} $$ O_{8} $(OH)2)) and soulunite ($ Ca_{2} $($ Si_{2} $$ O_{5} $(OH)2)$ H_{2} $O) structures. Thereby, evidencing the application of ground glass fiber and carbide lime as green alternative binders to soil stabilization.
Macro–Micro Characterization of Green Stabilized Alkali-Activated Sand
https://orcid.org/0000-0001-6028-9115
Abstract Despite the natural bearing capacity of soils, it is common to encounter materials that are not suitable for earthworks purposes. Several techniques emerged as solutions to this problem, such as soil densification, soil stabilization, and soil reinforcement. In the case of soil stabilization, ordinary Portland cement remains as the main adopted binder even though its poor environmental performance. To achieve a more sustainable alternative, the present research investigated the role of influential factors on the strength development in alkali-activated sand, ground glass fiber (GGF) and carbide lime (CL) blends, as well as the physical, chemical, morphological and thermal characterization of these materials and their reaction products. The strength behavior was analyzed through unconfined compression and pulse velocity tests. The results showed strength and stiffness increases up to 5.00 MPa and 5.11 GPa for strength and stiffness, respectively. The adjusted porosity/volumetric binder content index (η/Biv0.28) demonstrated to be an effective tool to express the mechanical performance of the proposed blends. The blends with molar ratios of CaO/$ SiO_{2} $ = 1 presented the highest strength and stiffness increases. Finally, hydration products were detected and identified as rosenhahnite ($ Ca_{3} $($ Si_{3} $$ O_{8} $(OH)2)) and soulunite ($ Ca_{2} $($ Si_{2} $$ O_{5} $(OH)2)$ H_{2} $O) structures. Thereby, evidencing the application of ground glass fiber and carbide lime as green alternative binders to soil stabilization.
Macro–Micro Characterization of Green Stabilized Alkali-Activated Sand
https://orcid.org/0000-0001-6028-9115
Abstract Despite the natural bearing capacity of soils, it is common to encounter materials that are not suitable for earthworks purposes. Several techniques emerged as solutions to this problem, such as soil densification, soil stabilization, and soil reinforcement. In the case of soil stabilization, ordinary Portland cement remains as the main adopted binder even though its poor environmental performance. To achieve a more sustainable alternative, the present research investigated the role of influential factors on the strength development in alkali-activated sand, ground glass fiber (GGF) and carbide lime (CL) blends, as well as the physical, chemical, morphological and thermal characterization of these materials and their reaction products. The strength behavior was analyzed through unconfined compression and pulse velocity tests. The results showed strength and stiffness increases up to 5.00 MPa and 5.11 GPa for strength and stiffness, respectively. The adjusted porosity/volumetric binder content index (η/Biv0.28) demonstrated to be an effective tool to express the mechanical performance of the proposed blends. The blends with molar ratios of CaO/$ SiO_{2} $ = 1 presented the highest strength and stiffness increases. Finally, hydration products were detected and identified as rosenhahnite ($ Ca_{3} $($ Si_{3} $$ O_{8} $(OH)2)) and soulunite ($ Ca_{2} $($ Si_{2} $$ O_{5} $(OH)2)$ H_{2} $O) structures. Thereby, evidencing the application of ground glass fiber and carbide lime as green alternative binders to soil stabilization.
Macro–Micro Characterization of Green Stabilized Alkali-Activated Sand
Carvalho Queiróz, Luciana (author) / Dias Miguel, Gustavo (author) / Jordi Bruschi, Giovani (author) / Deluan Sampaio de Lima, Max (author)
2022
Article (Journal)
Electronic Resource
English
BKL:
57.00$jBergbau: Allgemeines
/
38.58
Geomechanik
/
57.00
Bergbau: Allgemeines
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
Micro-macro property correlations in alkali halide crystals
| British Library Online Contents | 2003
Durability, Strength, and Stiffness of Green Stabilized Sand
| British Library Online Contents | 2018