It has become essential to recycle materials to create a sustainable environment, the application... more It has become essential to recycle materials to create a sustainable environment, the application of using brick dust and glass powder leads to the reduction in the emission co2 and environmental landfills caused by the production of cement, disposal issues relating to solid waste, and demolished structures. The outcome of this research observes that the use of brick dust and sawdust in concrete helps in reducing the cost of the product, decreasing the amount of emitted CO2 as well as providing a way for environmental byproducts to be reduced by utilized for better sustaining of the ecosystem. In accordance with this study the evaluation of several properties of concrete was determined, the properties include compression test, split tensile test, compacting factor, slump for workability, density in the fresh and hardened state, and the ultrasonic pulse velocity of the concrete. The study used 10% brick dust as cement substitute and 5% by volume as substitute for fine aggregate. The ...
Technium: Romanian Journal of Applied Sciences and Technology
The present study is based on analyzing the sustainable approaches toward adaptation of green bui... more The present study is based on analyzing the sustainable approaches toward adaptation of green building , materials and technology. The implemented standards to reduce resource and energy usage is applied to improve the living standards of people and society. The study is focused on construction industry of Oman and consider fiver case studies from Salalah based on designing green building in Dhofar region. The green building and construction is rated according to standards provided by LEED organization. The study compare the case studies and develop model for sustainable building. The simulation results indicates the improtance of green building in saving energy and resources such as Eco-house.
Abstract Nowadays, the exponentially increasing carbon dioxide emission makes energy efficiency a... more Abstract Nowadays, the exponentially increasing carbon dioxide emission makes energy efficiency an important issue for architectures and engineers. In the energy consumption, the thermal performance of the building materials play of key role in this analysis. As a major factor in the thermal performance, the value of heat loss is expressed by U-value or R-value in the construction industry. The value of the thermal transmittance (U-Value) depends on different types of the cement, recycled coarse aggregate, and water-cement ratio. Hence, this study has analyzed the effect of various situations on the thermal transmittance. U-value is also defined as the inverse of R-value where the R-value is a measure expressing the resistance to heat flow via given thickness of material. U-value calculations can invariably be needed when establishing sustainable construction strategies for improving the sustainable development.
One of the challenges in sustainable development is to optimize the energy efficiency of building... more One of the challenges in sustainable development is to optimize the energy efficiency of buildings during their lifespan. Modern concretes offer both low embodied CO2 with the use of cement-replacements & recycled aggregates and reduced operational CO2 with the intrinsic property called “thermal mass” that reduces the risk of overheating in the summer and provides passive heating in the winter. Thermal mass is currently evaluated with “admittance” which is the ability of the element to exchange heat with the environment and is based on thermal capacity, conductivity, and density. Laboratory experiments are measured density, specific capacity and thermal conductivity of concrete mixes with various percentages of GGBS, PFA, SF and recycled aggregates. The results would contribute to the evaluation of the thermal mass performance of sustainable concrete elements in a building system.
One of the challenges that need to be considered is lowering the embodied carbon-dioxide levels. ... more One of the challenges that need to be considered is lowering the embodied carbon-dioxide levels. Beside of this, operational carbon-dioxide needs to be lowered by the aid of `thermal mass` which is an intrinsic feature that is used to diminish the danger of overheating the thermal admittance. Since thermal admittance is capability of replacement of heat within the environment, factors that can affect the thermal admittance include specific heat capacity, thermal conductivity and density. Therefore, in this study these factors are taken into consideration and evaluation of the effect of such factors on thermal admittance and hence thermal mass are carried out. This evaluation is made by the use of results obtained from laboratory experiments of measuring thermal properties of concrete mixes by using different proportions of various materials such as GGBS, PFA, SF and RCA. The results obtained from such measurements can then be used to make conclusions of the performance of thermal mass in sustainable concrete elements in building systems.
It has become essential to recycle materials to create a sustainable environment, the application... more It has become essential to recycle materials to create a sustainable environment, the application of using brick dust and glass powder leads to the reduction in the emission co2 and environmental landfills caused by the production of cement, disposal issues relating to solid waste, and demolished structures. The outcome of this research observes that the use of brick dust and sawdust in concrete helps in reducing the cost of the product, decreasing the amount of emitted CO2 as well as providing a way for environmental byproducts to be reduced by utilized for better sustaining of the ecosystem. In accordance with this study the evaluation of several properties of concrete was determined, the properties include compression test, split tensile test, compacting factor, slump for workability, density in the fresh and hardened state, and the ultrasonic pulse velocity of the concrete. The study used 10% brick dust as cement substitute and 5% by volume as substitute for fine aggregate. The ...
Technium: Romanian Journal of Applied Sciences and Technology
The present study is based on analyzing the sustainable approaches toward adaptation of green bui... more The present study is based on analyzing the sustainable approaches toward adaptation of green building , materials and technology. The implemented standards to reduce resource and energy usage is applied to improve the living standards of people and society. The study is focused on construction industry of Oman and consider fiver case studies from Salalah based on designing green building in Dhofar region. The green building and construction is rated according to standards provided by LEED organization. The study compare the case studies and develop model for sustainable building. The simulation results indicates the improtance of green building in saving energy and resources such as Eco-house.
Abstract Nowadays, the exponentially increasing carbon dioxide emission makes energy efficiency a... more Abstract Nowadays, the exponentially increasing carbon dioxide emission makes energy efficiency an important issue for architectures and engineers. In the energy consumption, the thermal performance of the building materials play of key role in this analysis. As a major factor in the thermal performance, the value of heat loss is expressed by U-value or R-value in the construction industry. The value of the thermal transmittance (U-Value) depends on different types of the cement, recycled coarse aggregate, and water-cement ratio. Hence, this study has analyzed the effect of various situations on the thermal transmittance. U-value is also defined as the inverse of R-value where the R-value is a measure expressing the resistance to heat flow via given thickness of material. U-value calculations can invariably be needed when establishing sustainable construction strategies for improving the sustainable development.
One of the challenges in sustainable development is to optimize the energy efficiency of building... more One of the challenges in sustainable development is to optimize the energy efficiency of buildings during their lifespan. Modern concretes offer both low embodied CO2 with the use of cement-replacements & recycled aggregates and reduced operational CO2 with the intrinsic property called “thermal mass” that reduces the risk of overheating in the summer and provides passive heating in the winter. Thermal mass is currently evaluated with “admittance” which is the ability of the element to exchange heat with the environment and is based on thermal capacity, conductivity, and density. Laboratory experiments are measured density, specific capacity and thermal conductivity of concrete mixes with various percentages of GGBS, PFA, SF and recycled aggregates. The results would contribute to the evaluation of the thermal mass performance of sustainable concrete elements in a building system.
One of the challenges that need to be considered is lowering the embodied carbon-dioxide levels. ... more One of the challenges that need to be considered is lowering the embodied carbon-dioxide levels. Beside of this, operational carbon-dioxide needs to be lowered by the aid of `thermal mass` which is an intrinsic feature that is used to diminish the danger of overheating the thermal admittance. Since thermal admittance is capability of replacement of heat within the environment, factors that can affect the thermal admittance include specific heat capacity, thermal conductivity and density. Therefore, in this study these factors are taken into consideration and evaluation of the effect of such factors on thermal admittance and hence thermal mass are carried out. This evaluation is made by the use of results obtained from laboratory experiments of measuring thermal properties of concrete mixes by using different proportions of various materials such as GGBS, PFA, SF and RCA. The results obtained from such measurements can then be used to make conclusions of the performance of thermal mass in sustainable concrete elements in building systems.
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Papers by Omer Damdelen