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Residue from coal combustion for plastic soil improvement

GALLARDO AMAYA, ROMEL JESUS; Coronel Rojas, J; calixto, nelson javier (Journal of Physics: Conference Series, 2022-10)

The combustion of coal in Hoffman-type furnaces generates ash as one of the process residues. This research seeks to make use of this residue to improve plastic subgrade soils in tertiary roads, considering that in ...
Sistemas urbanos de drenaje sostenible (SUDS) una alternativa integral para el manejo de las aguas lluvias

Tarazona Tobo, Leidy ; Bonilla-Granados, Carlos Alexis; Rojas Suárez, Jhan Piero (Mundo FESCColombia, 2021-01-01)

El eficiente manejo de la escorrentía se ha constituido como un factor de gran importancia en la constante búsqueda de entornos urbanos sostenibles que integren equitativamente el ámbito social, económico y ecológico; ...
Statistical analysis of wastewater monitoring for maximum peak factor estimation

calixto, nelson javier; Bonilla, Carlos; Rojas Suárez, Jhan Piero (Journal of Physics: Conference SeriesReino Unido, 2021-08-09)

The design and operation of sanitary sewerage systems are based on the knowledge of peak and the average daily wastewater flows. The maximum peak factor is obtained through the ratio of the maximum flow and the average ...
Unsaturated Hydraulic Conductivity in Composite Porous Media

Piero Rojas, Jhan; Ruge, Juan Carlos; Carrillo, Gustavo Adolfo (Applied SciencesSuiza, 2022-09-09)

Determining the constitutive properties that describe the incipient hydraulic behavior of the materials, including the matrix domains and the distribution of macro and micropores, is crucial to analyzing the preferential ...

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Residue from coal combustion for plastic soil improvement
...
GALLARDO AMAYA, ROMEL JESUS | 2022-10

The combustion of coal in Hoffman-type furnaces generates ash as one of the process residues. This research seeks to make use of this residue to improve plastic subgrade soils in tertiary roads, considering that in Colombia a large percentage of these are not paved. A soil with high plasticity has been selected to make mixtures with ash dosages that vary from 0% to 15% with respect to the dry weight of the soil. To determine the variation of the physical and mechanical properties of the soil-ash mixtures tests of consistency limits, compaction tests, and California bearing ratio were carried out. The results showed that the mixture in which 12% of the coal combustion residue is added to the soil, as a percentage for the dry weight of the soil, has a better physical behavior and bearing capacity than the soil in its natural state. obtaining an increase of up to 75% in the California bearing ratio.

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Sistemas urbanos de drenaje sostenible (SUDS) una alternativa integral para el manejo de las aguas lluvias
...
Tarazona Tobo, Leidy | 2021-01-01

El eficiente manejo de la escorrentía se ha constituido como un factor de gran importancia en la constante búsqueda de entornos urbanos sostenibles que integren equitativamente el ámbito social, económico y ecológico; aunque dicho manejo comúnmente se realiza a través de sistemas de drenaje convencionales, estas alternativas cada día están más lejos de cumplir con su objetivo, a causa de factores como la impermeabilización de los suelos y las ampliaciones de red requeridas para el uso de dichas zonas de expansión, los cuales generan aumentos en los caudales punta, superando los previstos durante la concepción de dichos sistemas, lo que desencadena en inundaciones a causa del desbordamiento de las estructuras; esto sumado al cambio climático, el efecto de isla calor y la contaminación difusa, crea una gran problemática y con ella, la necesidad de darle una solución eficaz, gestionando este recurso de una forma distinta, haciendo uso de alternativas no convencionales como los Sistemas Urbanos de Drenaje Sostenible (SUDS), esto con el fin de reproducir el ciclo hidrológico natural, integrando los aspectos sociales, paisajísticos y ambientales de las zonas intervenidas; con el fin de conocer a profundidad estos sistemas, sus ventajas y desventajas, se realizó una búsqueda bibliográfica, con el objetivo de obtener información relevante sobre los SUDS, las tipologías existentes y su implementación en múltiples proyectos urbanos; con la cual se observó que su uso se remonta a comunidades como el imperio Romano y el imperio Maya, que ante la precariedad de recursos hídricos se vieron en la necesidad de crear técnicas de recolección de aguas lluvias para su uso en distintas actividades, con el tiempo, dichos métodos se han tecnificado, convirtiéndose en símbolos de sostenibilidad e innovación a nivel nacional e internacional en países como en España, Australia y Francia.

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Statistical analysis of wastewater monitoring for maximum peak factor estimation
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calixto, nelson javier | 2021-08-09

The design and operation of sanitary sewerage systems are based on the knowledge of peak and the average daily wastewater flows. The maximum peak factor is obtained through the ratio of the maximum flow and the average discharge flow of wastewater generated in a system. In this sense, the maximum peak factor was estimated by monitoring wastewater flow in an urban sector of the city of San José de Cúcuta, Colombia. This urban sector represents 45.6% of the sanitary sewerage of the city. Stochastic modeling of the peak flow was performed, and a mathematical model was constructed to estimate the maximum peak factor using a correlational study using statistical methodology. Through linear regression analysis, a model was obtained that estimates the value of the maximum peaking factor based on knowledge of the average daily wastewater flow. The results indicate that the model is potential, and the expression is statistically significant and satisfies the assumptions established for the classical linear regression model.

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Unsaturated Hydraulic Conductivity in Composite Porous Media
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Piero Rojas, Jhan | 2022-09-09

Determining the constitutive properties that describe the incipient hydraulic behavior of the materials, including the matrix domains and the distribution of macro and micropores, is crucial to analyzing the preferential water flow in saturated soils, ks, and unsaturated, ku. This study focused on determining the hydraulic conductivity in porous media under total and partial saturation conditions. The infiltration characteristics of three reconstituted soils were evaluated using five suction ranges employing conventional permeameters, an automated dual system, and mini-disk infiltrometers. The experimental cycles were carried out in granular soils with mixtures of diatomaceous soils, iron oxide (Fe2O3 ), and calcium carbonate (CaCO3 ) in 5–40% proportions. The differences between the granular microstructures of each material and the different hydraulic interaction mechanisms (suctione levels) significantly affected the values of ks and ku and the coupling between the pore domains and the defined water regime. Additionally, a lower impact was observed in the data set exposed to higher percentages of Fe2O3 and CaCO3 in different suction ranges, mainly due to a tension effect (meniscus) generated by suction in the granular skeleton. Since both parameters are mutually correlated and have a similar impact between methods and soil cores, ks and ku must be optimized simultaneously in each mechanism analyzed. The main findings of this work result in the confirmation that the unsaturated permeability decreases as suction is imposed on the sample. As well as the addition of different materials with Particle Size Distribution finer than the base sample, it also reveals a reduction in hydraulic conductivity, both saturated and unsaturated.

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Listar Hidrología y Recursos Hídricos - HYDROS por título

Residue from coal combustion for plastic soil improvement

Sistemas urbanos de drenaje sostenible (SUDS) una alternativa integral para el manejo de las aguas lluvias

Statistical analysis of wastewater monitoring for maximum peak factor estimation

Unsaturated Hydraulic Conductivity in Composite Porous Media

Envíos recientes

Residue from coal combustion for plastic soil improvement

Sistemas urbanos de drenaje sostenible (SUDS) una alternativa integral para el manejo de las aguas lluvias

Statistical analysis of wastewater monitoring for maximum peak factor estimation

Unsaturated Hydraulic Conductivity in Composite Porous Media

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Listar Hidrología y Recursos Hídricos - HYDROS por título

Residue from coal combustion for plastic soil improvement ﻿

Sistemas urbanos de drenaje sostenible (SUDS) una alternativa integral para el manejo de las aguas lluvias ﻿

Statistical analysis of wastewater monitoring for maximum peak factor estimation ﻿

Unsaturated Hydraulic Conductivity in Composite Porous Media ﻿

Envíos recientes

Residue from coal combustion for plastic soil improvement

Sistemas urbanos de drenaje sostenible (SUDS) una alternativa integral para el manejo de las aguas lluvias

Statistical analysis of wastewater monitoring for maximum peak factor estimation

Unsaturated Hydraulic Conductivity in Composite Porous Media

Portales Institucionales

Residue from coal combustion for plastic soil improvement

Sistemas urbanos de drenaje sostenible (SUDS) una alternativa integral para el manejo de las aguas lluvias

Statistical analysis of wastewater monitoring for maximum peak factor estimation

Unsaturated Hydraulic Conductivity in Composite Porous Media