Lateritic
Mostrando 1-12 de 52 artigos, teses e dissertações.
-
1. Settlement of bored piles with expander body system in lateritic soils
Abstract The Expander Body pile (EB) is a combination of a cast-in-situ pile method with an inflated, pump-grouted tip. The EB system's pioneering conjunction with the conventional drilling pile technique has improved work load, foundation security, cost reductions and abrupt displacements in lateritic, porous, unsaturated soils. The aim of this article is t
REM, Int. Eng. J.. Publicado em: 2021-09
-
2. Mineralogical characterization of copper lateritic ore from the Furnas deposit - Carajás, Brazil
Abstract Furnas is a small and not well-known copper sulfide deposit in the northern Carajás mineral province (Pará State, Brazil). Mineralogical and geochemical studies were performed on three weathered samples in order to verify the presence of copper in the lateritic minerals. According to these Cu-bearing minerals (malachite, e.g.), the weathered ore c
REM, Int. Eng. J.. Publicado em: 2020-09
-
3. Morphology and morphometry of upland lakes over lateritic crust, Serra dos Carajás, southeastern Amazon region
ABSTRACT High-resolution satellite images, digital elevation models, bathymetric and sedimentological surveys coupled with statistical analysis were used to understand the physical environment and discuss their influence on water quality of the five upland lakes of Serra Sul dos Carajás, southeast Amazonia. The lakes have mid-altitude ranges (elevation), ve
An. Acad. Bras. Ciênc.. Publicado em: 17/05/2018
-
4. Soil Stabilization with Lime for the Construction of Forest Roads
ABSTRACT The mechanical performance of soil stabilization using lime to improve forest roads was assessed. This study was conducted with lateritic soil (LVAd30) using lime content of 2% in the municipality of Niquelândia, Goiás state, Brazil. Geotechnical tests of soil characterization, compaction, and mechanical strength were performed applying different
Floresta Ambient.. Publicado em: 19/02/2018
-
5. Growing Periandra mediterranea on post-mining substrate: native Fabaceae with potential for revegetation of degraded rupestrian grasslands in Brazil
ABSTRACT Recovery of degraded areas of rupestrian grasslands is hampered mainly by the limited knowledge regarding substrate management and the biology of native species suitable for revegetation of these areas. The aim of our study was to examine the establishment and growth of Periandra mediterranea in different textures of lateritic substrate from a minin
Acta Bot. Bras.. Publicado em: 15/01/2018
-
6. Analysis of Potential for Linear Erosion in the Cerrado Biome Using Morphopedology
ABSTRACT The Cerrado is a vegetation complex with a wide variety of phytophysiognomies, and sustainable management is essential for maintaining biodiversity. Morphopedology is a tool that can assist in developing plans for control of soil and land use, especially in evaluating the potential of soil erosion processes. This technique allows landscape units con
Rev. Bras. Ciênc. Solo. Publicado em: 22/06/2017
-
7. Doping technique in the interfacial transition zone between paste and lateritic aggregate for the production of structural concretes
This paper discusses the use of doping technique in the interfacial transition zone (ITZ) between Portland cement paste and lateritic aggregates with the objective of promoting the implementation of structural concrete. Doping technique consists of establishing the initial impregnation of the aggregate with a high performance paste in order to improve its bi
Mat. Res.. Publicado em: 11/10/2013
-
8. Difusão e adsorção de Al, Fe, Mn e F por um solo laterítico visando a aplicação como barreira impermeabilizante para a bacia de captação da drenagem ácida gerada pela pilha de estéril 4 da UTM-Caldas / Diffusion and adsorption of Al, Fe, Mn and F by a lateritic soil, aiming at its application as waterproofing barrier for the impoundment basin of acid drainage generated by wste rock pile 4 at UTM-Caldas
A primeira mina de extração de urânio do Brasil, atualmente em fase de descomissionamento, gerou vários impactos ambientais negativos em sua área, em decorrência dos processos de lavra, tratamento e beneficiamento. A geração de drenagem ácida na pilha de estéril número 4 (PE-4) é um dos impactos negativos gerados com a situação mais crítica. A
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2011
-
9. Reserva nitrogenada no genero Beijerinckia isolada da rizosfera de cana-de-açúcar. / Nitrogen reserve in the genus Beijerinckia isolated from sugarcane rhizosphere.
Beijerinckia sp. bacteria free-living nitrogen-fixing, commonly found in tropical lateritic soils. The cyanophycin produced by cyanobacteria is the only intracellular nitrogen reserve described to date. This study aimed to verify the intracellular buildup of nitrogen associated with Biological Nitrogen Fixation in five Beijerinckia isolated from the rhizosph
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
-
10. EstÃgio de intemperismo de perfil laterÃtico em Ãrea subtropical com substrato basÃltico â superfÃcie aplainada VI (SW PR) / Stage of lateritic weathering profile on basalt substrate area with subtropicalâ planed surface VI (SW PR)
SuperfÃcies aplainadas significam a Ãltima etapa da evoluÃÃo de relevos. Para que se possa entender como foi o processo de gÃnese e evoluÃÃo das mesmas se torna necessÃrio buscar informaÃÃes sobre os processos de formaÃÃo dos solos relacionados ao regime climÃtico e o substrato rochoso. As regiÃes Sudoeste do Paranà e Noroeste de Santa Catarin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2011
-
11. Uso de materais não convencionais para base de pavimentos asfálticos no muunicípio de Aparecida de Goiânia - GO / The use of non-conventional materials for asphalt pavements base in the city of Aparecida de Goiânia-GO
The city of Aparecida de Goiania-GO has a current estimate of 16,782,313 m of urban roads, and there are still 51.5% to be paved. However, the technical staff of the mayor is facing a challenge related to the purchase of lateritic gravel for paving of these streets. Taking into account that most roads in the city has a low volume of traffic (N ≤ 5.105)
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/03/2011
-
12. Comportamento de estacas escavadas de pequeno diâmetro em solo laterítico e colapsível da região de Campinas/SP / Behavior of bored piles of small diameter in collapsible and lateritic soil in the region of Campinas/SP
This paper aims to study the behavior of bored piles of small diameters, subjected to axial compression loads by static load tests carried out at the Field of Experimental Soil Mechanics and Foundation 2 at Unicamp. The CEMSF2 has a geological profile whose first layer is composed of silty clay, with coluvionar, lateritic, and collapsible features.This study
Publicado em: 2011