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JUSTNES, Harald
Production of cement is ranking 3rd in causes of man-made carbon dioxide emissions world-wide. Thus, in order to make concrete more sustainable one may work along one or [...]
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This study investigates performance of slag as an alternative cementitious binder against ordinary Portland cement (OPC), fly ash (FA) and palm oil fuel ash (POFA). To ac [...]
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In Japan, it is expected to use much the recycled aggregates for concrete because concrete wastes have been increasing but natural aggregate resources have been decreasin [...]
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An entire concrete waste reuse model for producing recycled aggregate class H concrete was established with the objective of recycling concrete waste generated during ant [...]
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Self compacting concrete (SCC) is a very fluid concrete that is characterized by its high volume of paste, and the use of superplasticizer. The effects of recycled aggreg [...]
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As disposal and treatment of industrial wastes are often costly and hazardous for the environment, its use in concrete mixing can lead to a greener solution to environmen [...]
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This study evaluates the size effect in the shear performance of reinforce concrete beams with recycled coarse aggregates. The test variables include the type of aggregat [...]
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This study evaluates different methods of strengthening existing square concrete columns under eccentric loading. Twelve reinforced square concrete columns were cast. Fou [...]
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In order to reduce the amount of CO2 gas in cement industry, the use of blended cement is valid. Share of blended cement in Japan, has not changed over last 10 years. One [...]
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Porous ceramic aggregate produced from roof tile waste was used as an internal curing agent. The aim of this study is to investigate the effect of the porous ceramic aggr [...]
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The deterioration of concrete by sulfuric acid attack in sewage environments has become a serious problem. In this study, it was shown that the resistance to sulfuric aci [...]
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Fracture energy tests were carried out on Portland blast furnace cement-type B (BB) concrete where as an internal curing material, partial replacement of course aggregate [...]
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This study investigated the influence of the molten slag as fine aggregates of concrete on the structural performance of RC beams. In the loading test, the mechanical res [...]
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Use of ultra high strength concrete (UHSC) is effective in improving durability of concrete structures which should lead to establishment of sustainable society. However, [...]
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This study aims to clarify the amount of CO2 fixation in demolished concrete under different exposure conditions, and in addition, it aims at computing the LCCO2 (Life Cy [...]
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Ground Granulated Slag, from Blast furnace has been in use in Concrete as partial replacement of cement since a century. Benefits of this hydraulic material are well know [...]
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For high durability and strength, decreasing of the water to binder ratio of cement is needed by using of fly ash, blast furnace slag as mineral admixture. And it is poin [...]
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Currently, the precast industry represents 20% of concrete production around the world and the use of steam curing to accelerate hydration has been adopted as one of the [...]
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Waste concrete accounts for a substantial fraction of construction waste, and the recycling of waste concrete as concrete aggregate for construction is an important chall [...]
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Laboratory test on effects of porous concrete to water quality improvement in artificial sewage water was performed. In-situ test using water channel confirmed the purify [...]
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For high fluidity concrete beams with medium-quality recycled coarse aggregate and melt-solidified slag aggregate, we investigated the fresh concrete properties and the b [...]
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WRG stands for Welded Reinforcement Grids, which is a technology dealing with welding of steel reinforcement bars. The main idea of WRG is a replacement of the convention [...]
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Properties of a molten slag and concrete containing the molten slag as a fine aggregate were investigated, which was emitted in Kure City in Hiroshima Prefecture. Water t [...]
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Iron-welding slag is one of industrial wastes discharged in large quantities from shipyards. This study aimed at proposing an idea of utilizing the iron-welding slag as a [...]
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