Quarry Dust
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Corrosion Investigation of Stir Cast Zn-27Al Based Hybrid Composites Reinforced with Quarry Dust and Silicon Carbide Particles
This paper investigates the corrosion behaviour of Zn-27Al based hybrid composites reinforced with quarry dust (QD) and silicon carbide particles (SiCp). The Zn-27Al hybrid composites containing 8 wt% and 10 wt% SiCp-QD particles reinforcement with varied weight percentage of 0, 25, 50, 75 and 100% quarry dust respectively were synthesized using stir casting
Mat. Res.. Publicado em: 13/05/2019
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2. Characterization of Fiber Reinforced Self-Consolidating Mortars for Use in Patching Damaged Concrete
Abstract This research aims to study the effect of supplementary cementitious materials (SCMs) such as quarry dust limestone (QDL) and natural pozzolana (NP) on the performance of fiber reinforced self-consolidating repair mortars (FR-SCRMs). Based on previous optimization of QDL and NP replacement ratios, two mortar mixtures incorporating 10% QDL and 20% NP
Lat. Am. j. solids struct.. Publicado em: 2017-06
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3. Iso-velocity maps. A vibration control tool in quarries
Urban growth around mining areas has brought problems such as neighborhood's discomfort due to blasting vibrations, which can cause structural damage to the houses, dust and atmospheric overpressure. In Brazil, environmental restrictions are increasingly rigorous and seismic monitoring is required as an environmental control measure. This study aims to analy
Rem: Rev. Esc. Minas. Publicado em: 2015-09
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4. Aproveitamento de resíduos da extração de micaxisto em pavimentos flexíveis / Institutional assessment and teaching practice in education Utilization of waste from the extraction of mica in flexible pavements
The recycling of materials has been strengthened as an efficient mechanism to minimise the problems caused by improper disposal of solid waste from human activities. Accordingly, the search for mechanisms able to absorb the waste from quarry, coming from the production of aggregates for construction, it becomes an important tool for mitigating externalities
Publicado em: 2008
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5. INFLUÊNCIA DE ADIÇÕES MINERAIS POZOLÂNICAS E DE FINOS DE PEDREIRA NAS PROPRIEDADES MECÂNICAS E NA MICROESTRUTURA DO CONCRETO AUTO-ADENSÁVEL / Influence of the mineral additions and the quarry dust in the mechanical properties and the microstructure of the self-compacting concrete
Para atender suas propriedades no estado fresco, o concreto autoadensável (CAA) demanda uma grande quantidade de finos em sua composição, em média 450 kg/m. Os finos de pedreira, material resultante do processo de britagem, surgem como alternativa econômica e sustentável no desenvolvimento do CAA. Além dos finos, adições minerais pozolânicas, muito
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/08/2007
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6. INFLUÊNCIA DE ADIÇÕES MINERAIS POZOLÂNICAS E DE FINOS DE PEDREIRA NAS PROPRIEDADES MECÂNICAS E NA MICROESTRUTURA DO CONCRETO AUTO-ADENSÁVEL / Influence of the mineral additions and the quarry dust in the mechanical properties and the microstructure of the self-compacting concrete
For the benefits of its properties in fresh state, self-compacting concrete (SCC) demands a high powder content in the composition, nearby 450kg/m. The quarry dust, resultant material of the coarse aggregate production, can b considered as an economic and sustainable alternative for the development of the SCC. As well as the quarry dust, mineral additions, i
Publicado em: 2007
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7. Silica dust assessment: a case study in a quarry in São Paulo´s Metropolitan Area. / Avaliação da poeira de sílica: um estudo de caso em uma pedreira na Região Metropolitana de São Paulo.
As empresas produtoras de pedra britada têm uma atribuição fundamental para o desenvolvimento socioeconômico da população que é a produção de material básico para construção civil. A pedra britada está entre as cinco primeiras substâncias minerais com maior valor de produção, e mesmo assim, os dados de consumo per capita indicam que no país
Publicado em: 2003
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8. Mortality from stomach cancer in United States cement plant and quarry workers, 1950-80.
In 1978 a study of the mortality of United States cement plant and quarry workers was initiated. The vital status of a cohort of 5292 men who had been employed for at least five years in a cement plant between 1950 and 1980 was traced to 1 January 1980. The mortality experience was evaluated for 4231 white men for whom complete work histories and demographic
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9. Does occupational exposure to dust prevent colorectal cancer?
OBJECTIVES--To explore the impression that occupational epidemiologists tend to focus on associations suggestive of increased risk and tend to ignore those associations in which risk is not increased. To examine the risk of colorectal cancer in cohorts exposed to dust, cohorts in which it has been suggested that occupational exposure is a cause of increased