scholarly journals Reuse of red ceramic waste in the production of concrete for civil construction

2021 ◽  
Vol 10 (12) ◽  
pp. e536101220967
Author(s):  
Heberson Teixeira da Silva ◽  
Luély Souza Guimarães ◽  
Fernanda Andrade Dutra ◽  
Dayanne Caldeira Martins ◽  
Dilceu Silveira Tolentino Júnior ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Large Scale ◽  
Lower Cost ◽  
The Other ◽  
Partial Replacement ◽  
Uniaxial Compression Test ◽  
Ceramic Waste ◽  
Renewable Natural Resources ◽  
Excessive Consumption ◽  
Compressive Strength Of Concrete

In search of the reuse of waste from civil construction, studies are presented as an alternative on the insertion of this waste into materials so that they become ecologically viable and at a lower cost. In this scope, there is the red ceramic waste (RCW), which is largely produced both in renovation works and in the stage of transporting construction components such as bricks, slabs, and floors. On the other hand, the use of cement is of great proportions, which raises concerns about the excessive consumption of non-renewable natural resources, especially in large-scale projects. Thus, the study aimed to evaluate the mechanical properties of compressive strength of concrete with partial replacement of cement by RCW and to verify the influence at different breakage ages (7, 14, 21, and 28 days). Five mixes were used, the first with 100% cement, and the others with crushed RCW to replace 5%, 10%, 15%, and 20% of the cement, and the resistance obtained according to percentages and ages was also verified of RCW through the uniaxial compression test. Thus, it was observed that for replacements of up to 15%, the strength losses were not significant, suggesting the feasibility of its use in works with high concrete demands, such as in dams.

Use of Ash from the Incineration of Elephant Grass (Pennisetum purpureums shaum) into Clayey Ceramic

2012 ◽  
Vol 727-728 ◽  
pp. 993-998 ◽  
Author(s):  
A.M.F.D. Silva ◽  
L.S. Lovise ◽  
Sérgio Neves Monteiro ◽  
Carlos Maurício Fontes Vieira
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Large Scale ◽  
Chemical Characterization ◽  
Physical And Mechanical Properties ◽  
Linear Shrinkage ◽  
The Other ◽  
Industrial Processes ◽  
Elephant Grass ◽  
Calcium Compounds

Ashes generated in industrial processes are usually discarded and contribute to environmental pollution. Large scale incorporation into clayey ceramic products for civil construction, such as bricks and tiles, could be a permanent solution. Based on this rationale, this works has as its objective to characterize an ash waste from the incineration of elephant grass and to evaluate its incorporation into a clay to produce red ceramic. The waste was submitted to mineralogical and chemical characterization. Compositions were prepared with incorporation of the waste in amounts of up to 20 wt.% into the clay. Specimens were prepared by extrusion and fired in a laboratory furnace at 850°C. The physical and mechanical properties evaluated were: linear shrinkage, water absorption and flexural strength. The results showed that the waste is mainly composed of quartz and calcium compounds that sensibly reduce the linear shrinkage and does not change the other properties of the ceramic.

scholarly journals Study on Strength Properties of Concrete with Ceramic Waste Aggregate and Silica Fume Admixture

2018 ◽  
Vol 7 (3.12) ◽  
pp. 831
Author(s):  
Suresh G ◽  
Harishankar S
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Silica Fume ◽  
Coarse Aggregate ◽  
Strength Properties ◽  
Industrial Wastes ◽  
Conventional Concrete ◽  
Ceramic Waste ◽  
Compressive Strength Of Concrete

The ceramic waste is used as a coarse aggregate replacement in concrete is a two way beneficial process that involves minimization of resources for construction and processing of hazardous industrial wastes that cannot be recycled. The ceramic waste obtained from waste dismantled building were used as coarse aggregate 10%, 20%, 30%, 40% and 50% replacement.  To improve the mechanical properties silica fume is added as admixture in the concrete. The optimum percentage replacement was obtained considering the strength as well as the objective of using ceramic waste aggregate. The compressive strength of concrete cubes were tested . The compressive strength of aggregate replaced concrete has been compared to that of conventional concrete and the results are evaluated. 

scholarly journals Effect of partial replacement of fine aggregate by internal curing materials on mechanical properties of concrete

2022 ◽  
Vol 961 (1) ◽  
pp. 012042
Author(s):  
Abdulrasool Thamer Abdulrasool ◽  
Laith Sh. Rasheed ◽  
Laith Mohammed Ridha Mahmmod ◽  
Safaa S. Mohammed ◽  
Noor R. Kadhim
Keyword(s):  
Mechanical Properties ◽  
Mechanical Characteristics ◽  
The Other ◽  
Internal Curing ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Replacement Rate ◽  
Concrete Cracking ◽  
Compressive Resistance ◽  
Reference Mixture

Abstract Internal curing has long been utilized to decrease self-shrinkage and consequently the increased danger of concrete cracking prematurely. The measured mechanical characteristics of concrete were studied in five mixes, both with and without internal curing. Two of these mixtures have a 10% replacement rate, with one using ceramic and the other Attapulgite, while the other two have a 20% replacement, with one using ceramic and the other using Attapulgite, and the fifth is a reference mixture with no replacement for comparative reasons. With an increase of 27.93%, the ceramic combination with a 20% replacement rate is judged to have the highest compressive resistance, followed by the Attapulgite mixture with a 20% replacement rate with an increase of 34.2%. The results showed that the ceramic and Attapulgite internal curing purposes were highly effective, especially with a 20% replacement. The use of crushed ceramics and attapulgite as internal curing materials improves the characteristics of concrete.

scholarly journals Microbial-Derived Polyhydroxyalkanoate-Based Scaffolds for Bone Tissue Engineering: Biosynthesis, Properties, and Perspectives

2021 ◽  
Vol 9 ◽  
Author(s):  
Jian Li ◽  
Xu Zhang ◽  
Anjaneyulu Udduttula ◽  
Zhi Shan Fan ◽  
Jian Hai Chen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Biomedical Applications ◽  
Large Scale ◽  
Lower Cost ◽  
Culture Conditions ◽  
Manufacturing Technologies ◽  
Insight Into

Polyhydroxyalkanoates (PHAs) are a class of structurally diverse natural biopolyesters, synthesized by various microbes under unbalanced culture conditions. PHAs as biomedical materials have been fabricated in various forms to apply to tissue engineering for the past years due to their excellent biodegradability, inherent biocompatibility, modifiable mechanical properties, and thermo-processability. However, there remain some bottlenecks in terms of PHA production on a large scale, the purification process, mechanical properties, and biodegradability of PHA, which need to be further resolved. Therefore, scientists are making great efforts via synthetic biology and metabolic engineering tools to improve the properties and the product yields of PHA at a lower cost for the development of various PHA-based scaffold fabrication technologies to widen biomedical applications, especially in bone tissue engineering. This review aims to outline the biosynthesis, structures, properties, and the bone tissue engineering applications of PHA scaffolds with different manufacturing technologies. The latest advances will provide an insight into future outlooks in PHA-based scaffolds for bone tissue engineering.

scholarly journals Polymer-CMOS Hybrid Neural Probes for Large-Scale Neuro-Electronic Interfacing

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1066
Author(s):  
Marko Bakula ◽  
Frederik Ceyssens ◽  
Robert Puers
Keyword(s):  
Large Scale ◽  
Lower Cost ◽  
Bipolar Transistor ◽  
The Other ◽  
Neural Probes ◽  
Input Devices ◽  
Interconnect Design ◽  
Living Organisms ◽  
Gold Bump

Achieving a stable, long-term connection with millions of neurons within living organisms remains one of the dreams of neuroscience. Silicon shank based probes lead the field in terms of pure channel count. On the other hand, polymer neural probes offer superior biocompatibility, ruggedness and lower cost. This work tries to merge these technologies while exploring new electronic and interconnect design methods, ultimately yielding a prototype of a polymer-CMOS hybrid neural probe with a gold bump interconnect along with an electronic design based on bipolar transistor input devices, pseudo-capacitive AC coupling and in-pixel digitization.

Mechanical Properties of Concrete with Compound Mineral Admixtures

2013 ◽  
Vol 325-326 ◽  
pp. 55-58
Author(s):  
Yun Feng Li ◽  
Zhi Feng Xu ◽  
Ling Ling Wang
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Blast Furnace Slag ◽  
Steel Slag ◽  
The Other ◽  
Mineral Admixtures ◽  
Mixture Ratio ◽  
Compressive Strength Of Concrete ◽  
Optimal Mixture Ratio ◽  
Furnace Slag

The influence of multi-component composite mineral admixtures on the mechanical properties and workability of concrete is studied in this paper, such as steel slag (SS), blast furnace slag (BFS) and fly ash (FA). Considering the above-mentioned factors, the optimal mixture ratio and substituted amount of composite mineral admixtures replacing equally cement are obtained. The results showed that composite mineral admixtures reduced the early compressive strength of concrete with composite admixtures, but significantly improved the workability and later compressive strength of concrete with composite admixtures. On the other hand, the optimal mixture ratio and substituted amount of double-mixing mineral admixtures are different.

Mechanical Properties of Concrete Mixed with SiO2 and CaCO3 Nanoparticles

2011 ◽  
Vol 71-78 ◽  
pp. 1233-1236
Author(s):  
De Zhi Wang ◽  
Yun Fang Meng ◽  
Yin Yan Zhang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Partial Replacement ◽  
Replacement Level ◽  
Split Tensile Strength ◽  
Optimal Replacement ◽  
Compressive Strength Of Concrete

The split tensile strength and compressive strength of concrete mixed with SiO2and CaCO3nanoparticles have been experimentally studied. SiO2nanoparticles as a partial cement replaced by 0.5, 1.0, 2.0 and 3.0 wt.% and CaCO3nanoparticles by 1.0 and 3.0 wt.% were added partially to concrete. Curing of the specimens has been carried out for 7, 28, 78 and 128 days after casting. SiO2nanoparticle as a partial replacement of cement up to 3.0 wt.% could accelerate formation of CSH gel at the early ages and hence increase the split tensile strength and compressive strength. The optimal replacement level of cement by SiO2nanoparticles for producing concrete with improved strength was set at 2.0 wt.%. CaCO3nanoparticles as a partial replacement of cement up to 3.0 wt.% could consume crystalline Ca(OH)2and accelerate formation of calcium carboaluminate hydrate at the early ages and increase the split tensile strength and compressive strength. The optimal replacement level of cement by CaCO3nanoparticles for producing concrete with improved strength was set at 3.0 wt.%.

scholarly journals Mechanical Properties of the Concrete Containing Porcelain Waste as Sand

2018 ◽  
Vol 7 (4.30) ◽  
pp. 180 ◽  
Author(s):  
Mohammed Jamal ◽  
Mohammad Zaky Noh ◽  
Shihab Al- Juboor ◽  
Mohd Haziman Bin Wan ◽  
Zakiyyu Ibrahim Takai
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Construction Materials ◽  
Weight Ratio ◽  
Partial Replacement ◽  
Suitable Alternative ◽  
Ceramic Waste ◽  
Research Areas ◽  
Sand And Gravel

The demand of concrete have been increases on a daily bases which consume a lot of natural resource such as sand and gravel,  there is an immediate need for finding suitable alternative which can be used to replace sand partially with another materials with high proportion . Ceramic waste is one of the strongest research areas that include the activity of replacement in all the sides of construction materials. This research aims to improve the performance of concrete using ceramic waste, and demonstrate the performance of mechanical properties to the concrete with partial replacement of sand by using waste porcelain. For these, we analyzed the mechanical properties of the concrete such as compressive strength, split tensile and flexural strength, the specimen were measured based on 10% ,20% ,30% ,40%, and 50% weight ratio of replace sand with waste porcelain at different time under water for 7 days , 28 days , 60 days . The optimum consideration were given to mechanical properties of the concrete, at different amount of ceramic waste as sand.

scholarly journals Characterisation of recycled ceramic mortars for use in prefabricated beam-filling pieces in structural floors

2019 ◽  
Vol 69 (334) ◽  
pp. 189
Author(s):  
P. Rubio de Hita ◽  
F. Pérez-Gálvez ◽  
M. J. Morales-Conde ◽  
M. A. Pedreño-Rojas
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Partial Replacement ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ceramic Waste ◽  
Physical Chemical ◽  
Different Types ◽  
Materials Used

This study analyses a procedure to manufacture mortars with different percentages of ceramic waste as partial replacement for aggregates. The study also examines the physical, chemical and mechanical properties of the new mortars, analysing substitution ratios that range from 10% to 50%. Prior to this, all the materials used in the production of the mortar were characterised using X-ray diffraction (XRD) and fluorescence (XRF). The objective was to determine the similarity between different types of ceramic waste, as well as the differences in the minerology and chemical composition with the aggregate. The results of the study show that it is possible to obtain mortars with lower densities compared to the same product with no recycled content. The product’s characteristics make it ideal for the manufacture of prefabricated components for structural floors for rehabilitation works. Finally, the pieces are used in a real rehabilitation case study, highlightining the structural advantages.

scholarly journals The Effect of Ceramic Wastes on Physical and Mechanical Properties of Eco-Friendly Flowable Sand Concrete

2020 ◽  
Author(s):  
Mohamed Guendouz ◽  
Djamila Boukhelkhal ◽  
Alexandra Bourdot ◽  
Oussama Babachikh ◽  
Amine Hamadouche
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Bulk Density ◽  
Physical And Mechanical Properties ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Ceramic Waste ◽  
Mechanical Strengths

This work aims to study the valorization and recycling of ceramic wastes (wall tiles) as a fine aggregate instead of sand in the manufacturing of flowable sand concrete (FSC). For this, the sand is substituted with the ceramic wastes at different dosages (0, 5, 10, 15, 20, and 25% by volume of the sand). The influence of the ceramic wastes addition on the physical (workability, density) and mechanical (compressive, flexural and elastic modulus) properties of FSC was studied. The results show that the use of ceramic waste as partial replacement of sand contributes to reduce the workability, bulk density and improves the mechanical strengths of FSC according to the use of 25% of wall tiles waste.

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