Assed Haddad

Universidade Federal do Rio de Janeiro (UFRJ), Departamento de Construção Civil, Faculty Member

Followers

310

Following

Co-authors

Public Views

Professor of Civil Engineering at the Universidade Federal do rio de Janeiro Brazil. Ph.D. in Production Engineering / 1996, M.Sc. in Civil Engineering / 1992, Civil / 1986 and Safety /1994 Engineer (w/ Professional Registration). Juris Doctor 1993. ASQ CQE and CRE.

less

Shamsulhadi Bandi

Universiti Teknologi Malaysia - UTM

Giovanni Migliaccio

University of Washington

Tariq Mahdi

BHRC

Haluk Sesigür

Istanbul Technical University

luisa villanueva

Universidad de Costa Rica

Rita Volpe

Sovrintendenza di Roma Capitale

Miguel Silva

Universidad Nacional de La Plata

Lewis Peake

University of East Anglia

Reinaldo Imbrozio Barbosa

Instituto Nacional de Pesquisas da Amazônia

IBRAHIM I B R A H I M INUWA

Abubakar Tafawa Balewa University, Bauchi Nigeria

Interests

Uploads

Papers by Assed Haddad

Use of Cement Hydration Stabilizer Admixture at Ready Mix Concrete to Avoid Material Waste

Advanced Materials Research, Dec 13, 2013

Concrete from ready mix plant is the main raw material consumed in construction industry. A signi... more Concrete from ready mix plant is the main raw material consumed in construction industry. A significant waste quantity is generated with fresh concrete returned to the production center due to their inadequate allocation or demand preview. To minimize the amount of this material wasted, misused, discarded, could be used the Hydration Stabilizer Admixture (HSA). This product enables stabilization of the concrete setting time until 72 h. Waste generated by the building industry is becoming increasingly focused on discussions and studies, due to great importance that this topic is achieving. Generation of this waste in the construction sector and the large representation of this sector in society is one of the main problems encountered in the reuse of waste from construction. Its characteristic, heterogeneous and unknown, however, a specific part of that waste generated in the central metering concrete, has a high potential for reuse, mainly because they come from a production highly controlled, where the source materials and the final product are physically and chemically known. This work aims to study the environmental benefits and technical feasibility of stabilizing additive hydration as a solution for the reuse of residual concrete from central metering, always under a sustainable vision of the entire process through an experimental program. This work presents results of setting time, slump test, incorporated air, compressive strength at 3days, 7days, 14days, 28days and 45 days and elastic modulus ate 28 days. The reference concrete was compared with concrete stabilized mixtures (0.15%, 0.30%, 0.45% content of HSA), both presenting the same constituent materials. The results indicate the feasibility to the use of the HSA despite the reduction of the mechanical properties of the concrete.

An Inquiry into the Life Cycle of Systems of Inner Walls: Comparison of Masonry and Drywall

by Eduardo Qualharini and Assed Haddad

Sustainability, 2015

ABSTRACT Life Cycle Assessment is a methodology that investigates impacts linked to a product or ... more ABSTRACT Life Cycle Assessment is a methodology that investigates impacts linked to a product or service during its entire life cycle. Life Cycle Assessment studies investigate processes and sub-processes in a fragmented way to ascertain their inputs, outputs and emissions and get an overview of the generating sources of their environmental loads. The lifecycle concept involves all direct and indirect processes of the studied object. This article aims to model the material flows in the masonry and drywall systems and internal walls in a Brazilian scenario, and calculate the climate change impacts generated by the transport of the component materials of the systems. Internal walls of a residential dwelling in Rio de Janeiro are analyzed from a qualitative inventory of all life cycles with an analysis of material flows, based on technical and academic literature. All Life Cycle Impact Assessment of the systems is carried out with international data from the database, and using the IPCC2013 method for climate change impacts. This study disregards the refurbishment and possible extensions within the use phase. Thus, the inventory identifies weaknesses of the systems while the impact assessment validates the results. This study allows us a complete understanding about the inner walls systems in the Brazilian scenario, evidencing its main weaknesses and subsidizes decision-making for the industry and for planning of the new buildings.

Use of Cement Hydration Stabilizer Admixture at Ready Mix Concrete to Avoid Material Waste

Advanced Materials Research, 2013

Life Cycle Assessment: A Comparison of Ceramic Brick Inventories to Subsidize the Development of Databases in Brazil

Applied Mechanics and Materials, 2013

Brazilians construction industry is facing a growth panorama. Given this, discussions on environm... more Brazilians construction industry is facing a growth panorama. Given this, discussions on environmental suitability of the sector become relevant, since it is recognized as the most important sector for achieving more sustainable patterns of development. The life cycle assessment (LCA) has been considered one of the most appropriate methodologies for the analysis of interactions between products and services of construction industry and the environment and it has been used with numerous goals and different methodological referrals. In Brazil the main limitation related to the use of LCA is the lack of databases for the specific regional reality, which is related with life cycle inventories, part of LCA process. This article aims to compare different LCA studies that addressed the life cycle of ceramic bricks, an intensive used component in Brazilians buildings. The focus defined is the LCI of production phase, identifying possible differences in modeling processes and in inputs and o...

Human factors applied to alarm panel modernization of nuclear control room

by Fernando Toledo Ferraz, Assed Haddad, and Suzana Hecksher

Journal of Loss Prevention in the Process Industries, 2013

Human factors deal with issues related to humans, their behavior and the physical aspect of the e... more Human factors deal with issues related to humans, their behavior and the physical aspect of the environment in which they work. A control room is a complex system where operators perform plant operation using control systems and carry out monitoring and administrative responsibilities. For safe operation of industrial installation, the performance of the control room crew plays an important role. In this respect, a well designed control room is crucial for safe and efficient operation. The aim of this paper is to propose a methodological framework applied to nuclear control room evaluation, through participatory ergonomics, using operator activity analysis and human factors questionnaire as aid tools. We describe a case study in which the methodology framework was used in the evaluation process of a nuclear control room. The information gathered made possible a series of recommendation for the adequacy of the control room design, assisting in the safety assessment of the nuclear plant operation and justifying the alarm panel modernization.

Download

Analysis of the management process in the housing sector: the COHAB/Acre case

Revista Vértices, 2010

Application of a Sequential Life-Testing to an Accelerated Life- Testing with an Underlying Three-Parameter Inverse Weibull Model. A Maximum Likelihood Approach

In this work we will be life-test a new industrial product. We will be assuming an underlying thr... more In this work we will be life-test a new industrial product. We will be assuming an underlying three-parameter Inverse Weibull distribution and a linear acceleration condition. To estimate the three parameters of the Inverse Weibull model we will use a maximum likelihood approach for censored failure data. To evaluate the accuracy (significance) of the parameter values obtained under normal conditions for the underlying three-parameter Inverse Weibull model we will apply to the expected normal failure times a sequential life test using a truncation mechanism. An example will illustrate the application of the proposed approach.

Download

Discussion of environmental risk assessment models for reactive systems

This work approaches the problem of quantitative assess the risk form un-wanted events capable to... more This work approaches the problem of quantitative assess the risk form un-wanted events capable to generate high damages (accidents). More specifically, this paper discusses the BLEVE phenomena. The word BLEVE stands for "Boiling liquid Explosion Vapour Event", which one can describe as a mechanical explosion followed by a ball off fire. Maintaining the aim in a quantitative risk assessment perspective, this paper briefly presents the concept of risk, its management and analyses. As part of presenting the concept of risk, it is described as a function of three independent variables: frequency, severity and scenario. Within this definition, the quantitative risk assessments, as defined by some environmental agencies and standards, have their concept criticized since the quantitative analysis approach only the severity of an event (accident). Once it is finished building background, this paper presents the Probit equations to assess the outcome of a BLEVE, as well as the criteria for its applications. From that, BLEVE is modeled using the equations of state. These two sets of models are then compared and contrasted, having their strengths a d weakness discussed, which allows conclusions to be drawn. Among the conclusions achieved, it should be highlighted that the Probit equations does NOT provide a suitable model for a BLEVE, allowing, however, to establish parameters to compare and predict. On the other hand, the models developed from the equations of state provide results that are closer to those from a ream event, however at higher costs (time and complexity, mainly).

Download

Assessing risk in sustainable construction using the Functional Resonance Analysis Method (FRAM)

Cognition, Technology & Work, 2015

Traditional tools found in occupational risk assessments are a preliminary hazard analysis and ch... more Traditional tools found in occupational risk assessments are a preliminary hazard analysis and checklists, both based on the isolation of a particular activity from the entire process and created for application in specific environments of manufacture. This strategy makes the results of such evaluations distant from real situations. Construction is a complex endeavor and can involve multiple contractors and groups working under each contractor. Work occurs under constant change and varying demands. In this context, as workers move through their daily journey, their health and safety are often are threatened by activities carried out by other contractors or groups. The study utilizes the Functional Resonance Analysis Method (FRAM), which aims to describe how function couplings may be combined in such a way that variability of performance, rather than failure or poor functioning, creates an occupational risk. The study also contributes to the evolution of FRAM, by proposing the application of the analytic hierarchy process, to investigate the relative importance of the criteria and alternatives for the identification of phenotypes of performance variability, as well as the aggregation of variability.

Download

Waste Management in the Oil and Gas Industry by Brazilian Guideline for Environmental Audits - DZ-056-R.3

American Journal of Environmental Protection, 2013

Oil and gas exploration and production (E&P) is the main activity for the offshore economy. Yet, ... more Oil and gas exploration and production (E&P) is the main activity for the offshore economy. Yet, this it is also responsible for many of the major environmental accidents. Environmental legislation acts strongly in this type of activity, through limitations in the exploration processes and control procedures for the generation, storage, transportation and disposal of waste, applying penalties in cases of non-conformances, such as oil spills at sea and air pollutants emissions. In this context, waste management is very important for these operations, because of the complexity and dangerousness with the waste generated, and the cost of their destination. This work presents the offshore waste management system, introducing the procedures and controls according the requirements of the Brazilian Guideline for Environmental Audits, DZ-056-R.3.

Download

Avaliação de Metodologia de Ensino: Cursos Baseados em Estudos de Casos

A INTEGRAÇÃO DE SISTEMAS DE GESTÃO EM ORGANIZAÇÕES ADMINISTRADAS POR PROJETOS

Política habitacional no Acre e Inclusão Social: o desafio dos governos

... The challenges have stood over the past 10 years, having in sight the purpose to transform th... more

GESTÃO AMBIENTAL NA RODOVIA BR-319: DESMATAMENTO EVITADO E SUSTENTABILIDADE NO BIOMA AMAZÔNIA

UV and Blue-Light Exposures in an Aluminum Shipbuilding Environment

ANÁLISE DO PROCESSO DE GESTÃO NO SETOR DE HABITAÇÃO: O CASO COHAB/ACRE

... Analisar os fatores facilitadores e limitadores do processo de gerenciamento das políticas ha... more

Computer Simulation of Oil Dispersion in Rivers in Brazil Following a Spill: A Case Study Involving the Berigui and Iguacu Rivers

A importância do projeto final na formação do engenheiro de segurança do trabalho

Risk Assessment Study for a Floating, Production, Storage and Offloading Vessel (FPSO) in Deep Waters

by Assed Haddad and Paola Almeida

Applied Mechanics and Materials, 2014

This paper presents a quantitative risk assessment study on a Floating, Production, Storage and O... more This paper presents a quantitative risk assessment study on a Floating, Production, Storage and Offloading Vessel that operate in Brazilian offshore oil and gas production waters. In particular a study of the risks applied to a Storage Unit and Transfer Oil, focusing on the physical, especially in operations involving storage and handling of flammable liquids. The results showed that the unit must take safety measures process, because a failure in the system can affect other units; the level of security for the population of the ship is within the acceptable.

Download

An Application Model for Sustainability in the Construction Industry

by Assed Haddad and Fernando Beiriz

Use of Cement Hydration Stabilizer Admixture at Ready Mix Concrete to Avoid Material Waste

Advanced Materials Research, Dec 13, 2013

An Inquiry into the Life Cycle of Systems of Inner Walls: Comparison of Masonry and Drywall

by Eduardo Qualharini and Assed Haddad

Sustainability, 2015

Use of Cement Hydration Stabilizer Admixture at Ready Mix Concrete to Avoid Material Waste

Advanced Materials Research, 2013

Life Cycle Assessment: A Comparison of Ceramic Brick Inventories to Subsidize the Development of Databases in Brazil

Applied Mechanics and Materials, 2013

Human factors applied to alarm panel modernization of nuclear control room

by Fernando Toledo Ferraz, Assed Haddad, and Suzana Hecksher

Journal of Loss Prevention in the Process Industries, 2013

Download

Analysis of the management process in the housing sector: the COHAB/Acre case

Revista Vértices, 2010

Application of a Sequential Life-Testing to an Accelerated Life- Testing with an Underlying Three-Parameter Inverse Weibull Model. A Maximum Likelihood Approach

Download

Discussion of environmental risk assessment models for reactive systems

Download

Assessing risk in sustainable construction using the Functional Resonance Analysis Method (FRAM)

Cognition, Technology & Work, 2015

Download

Waste Management in the Oil and Gas Industry by Brazilian Guideline for Environmental Audits - DZ-056-R.3

American Journal of Environmental Protection, 2013

Download

Avaliação de Metodologia de Ensino: Cursos Baseados em Estudos de Casos

A INTEGRAÇÃO DE SISTEMAS DE GESTÃO EM ORGANIZAÇÕES ADMINISTRADAS POR PROJETOS

Política habitacional no Acre e Inclusão Social: o desafio dos governos

... The challenges have stood over the past 10 years, having in sight the purpose to transform th... more

GESTÃO AMBIENTAL NA RODOVIA BR-319: DESMATAMENTO EVITADO E SUSTENTABILIDADE NO BIOMA AMAZÔNIA

UV and Blue-Light Exposures in an Aluminum Shipbuilding Environment

ANÁLISE DO PROCESSO DE GESTÃO NO SETOR DE HABITAÇÃO: O CASO COHAB/ACRE

... Analisar os fatores facilitadores e limitadores do processo de gerenciamento das políticas ha... more

Computer Simulation of Oil Dispersion in Rivers in Brazil Following a Spill: A Case Study Involving the Berigui and Iguacu Rivers

A importância do projeto final na formação do engenheiro de segurança do trabalho

Risk Assessment Study for a Floating, Production, Storage and Offloading Vessel (FPSO) in Deep Waters

by Assed Haddad and Paola Almeida

Applied Mechanics and Materials, 2014

Download

An Application Model for Sustainability in the Construction Industry

by Assed Haddad and Fernando Beiriz

XIX SIMPÓSIO BRASILEIRO DE RECURSOS HÍDRICOS ANÁLISE DE RISCO DO SETOR DE EXTRAÇÃO DE AREIA Rio Preto – Estudo de Caso

by RICARDO CASTRO NUNES DE OLIVEIRA, Rosiany Possati Campos, and Assed Haddad

RESUMO-O Rio Preto é um rio federal com 222 km, que marca a divisa natural entre os Estados do Ri... more RESUMO-O Rio Preto é um rio federal com 222 km, que marca a divisa natural entre os Estados do Rio de Janeiro e Minas Gerais. Nasce na Serra da Mantiqueira, próximo ao Pico das Agulhas Negras, e tem sua foz no Rio Paraibuna. Sua importância econômica e social pode ser facilmente visualizada no mapa da sua Bacia Hidrográfica, de 3.326 km 2 , localizada no ecossistema de Mata Atlântica. Considerando a fragilidade institucional e a ausência das entidades públicas para que se mantenham as mínimas condições de sustentabilidade do rio federal, inexoravelmente constata-se a degradação irreversível, de bem fundamental para a sobrevivência de milhares de brasileiros. O quadro atual mostra as margens do rio com uma cobertura vegetal bastante alterada pela ação antrópica e uso e ocupação inadequados do solo, acelerando o processo erosivo nas margens do rio. Entre os problemas ambientais destacam-se o esgotamento sanitário, erosão e assoreamento. As atividades de extração de areia são realizadas de forma irresponsável e sem nenhum respeito ao meio ambiente. Nosso objetivo é apresentar uma proposta que permita a sustentabilidade da atividade de ex-tração de areia, minimizando os danos causados ao meio ambiente, através do uso das ferramentas de Análise de Riscos. ABSTRACT-The Rio Preto is a federal river, with 222 km, that forms the natural boundary between the States of Rio de Janeiro and Minas Gerais. It begins in the Serra da Mantiqueira, near the Pico das Agulhas Negras, and flows to Rio Paraibuna. Its economic and social importance may be evaluated by its Hydrographic Basin, covering 3.326 km2, located in the Mata Atlantica ecosystem. Considering the fragile institutional framework and lack of public boards to maintain the minimal sustainability conditions of this federal river, inexorably, it can be noted an irreversible degradation of this essential mean for the survival of thousands of Brazilians. Today's picture shows the river-margins with a very altered cover vegetation by anthropic action and by the inadequate use and occupation of the land, speeding the erosive process of the riverbanks. Among the environmental problems, its highlighted the sewage, the erosion and the sedimen-tation. The sand extraction activities are irresponsibly performed without any respect for the environment. Our objective is to present a proposal that will allow for the sustainability of the sand extraction activity, minimizing the environmental aggression through the use of Risc Analysis tools.

Download

Assed Haddad

Uploads

Papers by Assed Haddad

Log In