Evaluation of Application of High Quality Recycled Fine Aggregate Manufacturing System by the Drying Specific Gravity Separation Method

2005 ◽  
Vol 17 (1) ◽  
pp. 69-76 ◽  
Author(s):  
Moo-Han Kim ◽  
Jae-Hwan Kim ◽  
Yong-Ro Kim ◽  
Chul-Sung Na
Keyword(s):  
Specific Gravity ◽  
Manufacturing System ◽  
Gravity Separation ◽  
Separation Method ◽  
Fine Aggregate ◽  
High Quality ◽  
Recycled Fine Aggregate

scholarly journals Engineering and Manufacturing Technology of Green Epoxy Resin Coatings Modified with Recycled Fine Aggregates

2021 ◽  
Author(s):  
Kamil Krzywiński ◽  
Łukasz Sadowski ◽  
Damian Stefaniuk ◽  
Aleksei Obrosov ◽  
Sabine Weiß
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Construction And Demolition Waste ◽  
Fine Aggregate ◽  
Micro Computed Tomography ◽  
Demolition Waste ◽  
Replacement Ratio ◽  
Recycled Fine Aggregate ◽  
Fine Aggregates ◽  
Computed Tomography Scanning

AbstractNowadays, the recycled fine aggregate sourced from construction and demolition waste is not frequently used in manufacturing of epoxy resin coatings. Therefore, the main novelty of the article is to prepare green epoxy resin coatings modified with recycled fine aggregate in a replacement ratio of natural fine aggregate ranged from 20 to 100%. The microstructural properties of the aggregates and epoxy resin were analyzed using micro-computed tomography, scanning electron microscopy and nanoindentation. The macroscopic mechanical properties were examined using pull-off strength tests. The highest improvement of the mechanical properties was observed for epoxy resin coatings modified with 20% of natural fine aggregate and 80% of recycled fine aggregate. It has been found that even 100% of natural fine aggregate can be successfully replaced using the recycled fine aggregate with consequent improvement of the pull-off strength of analyzed epoxy resin coatings. In order to confirm the assumptions resulting from the conducted research, an original analytical and numerical failure model proved the superior behavior of modified coating was developed.

Influence of recycled fine aggregate on microstructure and hardened properties of concrete

2017 ◽  
Vol 69 (24) ◽  
pp. 1288-1295 ◽  
Author(s):  
Ravi Kumar ◽  
Subash Chandra Bose Gurram ◽  
Ashwani Kumar Minocha
Keyword(s):  
Fine Aggregate ◽  
Recycled Fine Aggregate ◽  
Hardened Properties

The Study on the Impact of Recycled Fine Aggregate and Powder on the Mechanics and Thermal Performance of Recycled Concrete Hollow Blocks

2012 ◽  
Vol 509 ◽  
pp. 119-122
Author(s):  
Wei Zhou ◽  
Ling Huan Lu ◽  
Zhen Li
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Thermal Performance ◽  
High Strength ◽  
Recycled Concrete ◽  
Fine Aggregate ◽  
Ordinary Concrete ◽  
Recycled Fine Aggregate ◽  
The Impact ◽  
The Heat Transfer Coefficient

The impact of recycled fine aggregate and powder on the mechanics and thermal performance of recycled concrete hollow blocks was discussed in this paper. The results showed that 30% recycled fine aggregate and powder have slight affect on the strength of recycled concrete hollow blocks. But the strength reduced significantly when the replacement is above 50%. The impact of recycled fine aggregate and powder on the performance of concrete hollow blocks with high strength grade is notable . The heat transfer coefficient of recycled concrete hollow blocks with 30% recycled fine aggregate and powder was equivalently to ordinary concrete hollow blocks.

scholarly journals Analysis of the Impact on Axial Compression and Diametric tensile strength of concrete using recycled fine aggregate

2021 ◽  
Vol 8 (7) ◽  
pp. 155-163
Author(s):  
Eduardo Dalla Costa Silva ◽  
Dykenlove Marcelin ◽  
Douglas Guedes Batista Torres ◽  
Thiago Guerra
Keyword(s):  
Tensile Strength ◽  
Axial Compression ◽  
Fine Aggregate ◽  
Recycled Fine Aggregate ◽  
The Impact

scholarly journals DORST Netshape® 4.0 – The Next Step Towards Autonomous Manufacturing

2021 ◽  
Author(s):  
Lutz Lackner ◽  
Mats Larsson
Keyword(s):  
Industry 4.0 ◽  
Manufacturing System ◽  
Measuring System ◽  
High Quality ◽  
Pressing Force ◽  
Part Geometry ◽  
Die Filling ◽  
New System

In the production of green parts from powder, there is unavoidable slight deviation in the die filling, even when high-quality powders are used. The quantity of powder in the die varies and thus affects the weight of the compact. This filling variation results in variation of the pressing force, and thus influences the part geometry. The development of the DORST Netshape® System was conceived as an autonomous manufacturing system in order to compensate for these effects. Based on the Dorst Industry 4.0 innovations for part weight measuring immediately after pressing in combination with a laser dimension measuring system, this technology package attempts to reach enhanced precision and consistency in production. The paper presents results from various trials that show the capability of this new system, designed to improve the quality of pressed parts.

scholarly journals PROPERTIES OF MORTARS CONTAINING TIRE RUBBER WASTE AND EXPANDED POLYSTYRENE (EPS)

2018 ◽  
pp. 219-225 ◽  
Author(s):  
Adriane Pczieczek ◽  
Adilson Schackow ◽  
Carmeane Effting ◽  
Itamar Ribeiro Gomes ◽  
Talita Flores Dias
Keyword(s):  
Compressive Strength ◽  
Specific Gravity ◽  
Water Absorption ◽  
Expanded Polystyrene ◽  
Fine Aggregate ◽  
Tire Rubber ◽  
Air Content ◽  
Rubber Waste ◽  
Hardened State ◽  
Entrained Air

This study aims to evaluate the application of discarded tire rubber waste and Expanded Polystyrene (EPS) in mortar. For mortars fine aggregate was replaced by 10%, 20% and 30% of rubber and, 7.5% and 15% of EPS. We have verified the consistency, density, amount of air and water retentitivity in fresh state. The compressive strength, water absorption, voids ratio and specific gravity have been also tested in hardened state. The application of rubber powder contributed to the increase in entrained air content and in reducing specific gravity, as well as reducing compressive strength at 28 days. The addition of EPS also contributed to the increase of workability, water absorption and voids ratio, and decreased density and compressive strength when compared to the reference mortar. The use of rubber waste and EPS in mortar made the material more lightweight and workable. The mortars mixtures containing 10% rubber and 7.5% EPS showed better results.

Kerogen Beneficiation from Longkou Oil Shale Using Gravity Separation Method

2016 ◽  
Vol 30 (4) ◽  
pp. 2841-2845 ◽  
Author(s):  
Zhijun Zhang ◽  
Xiaoxia Yang ◽  
Hongwei Jia ◽  
Hanyu Zhang
Keyword(s):  
Oil Shale ◽  
Gravity Separation ◽  
Separation Method
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