Influence of Recycled Glass Ceramic Waste on Physical and Mechanical Properties of Foamed Concrete (FC)

Glass ceramic waste (GCW) has been left unrecycled due to the challenges it causes. The primary purpose of this research is to find the optimal GCW composition as a quartz sand additive for Foamed Concrete-based Glass Ceramic Waste (FC-GCW) which will reduce the amount of unrecycled GCW that ends up in landfills while producing a sustainable product. The samples were prepared by grinding the GCW and mixing varying percentages of GCW (0, 5, 10, 15, 20, 25, and 30%) with a consistent quantity of cement, quartz sand, water, and foam. Physical and mechanical tests were performed on the samples. During physical tests, the density increased as the GCW percentage increased, but water absorption and porosity decreased. 20% FC-GCW had appropriate density, water absorption, and porosity values of 0.887 g/cm3, 22.6 %, and 88.9%, respectively, which demonstrated that the material is lightweight and porous. For mechanical testing, it was discovered that FC-GCW with 20% GCW addition had the highest average compressive strength of 0.94 MPa and 2.01 MPa for 7 and 28 days, respectively. This research's contribution can be applied to areas where low densities are preferred and low compressive strength is required, such as replacing existing soil to balance foundations, profiling positive slope to drains of flat concrete roofs, lightweight raft foundation in housing construction, trench reinstatement, soil stabilization by backfill of embankments, floor levelling, blinding concrete for thermal insulation purposes, pipefilling, lightweight foundations, and trench reinstatement

Influence of Recycled Glass Ceramic Waste on Physical and Mechanical Properties of Foamed Concrete (FC)

Glass ceramic waste (GCW) has been left unrecycled due to the challenges it causes. The primary purpose of this research is to find the optimal GCW composition as a quartz sand additive for Foamed Concrete-based Glass Ceramic Waste (FC-GCW) which will reduce the amount of unrecycled GCW that ends up in landfills while producing a sustainable product. The samples were prepared by grinding the GCW and mixing varying percentages of GCW (0, 5, 10, 15, 20, 25, and 30%) with a consistent quantity of cement, quartz sand, water, and foam. Physical and mechanical tests were performed on the samples. During physical tests, the density increased as the GCW percentage increased, but water absorption and porosity decreased. 20% FC-GCW had appropriate density, water absorption, and porosity values of 0.887 g/cm3, 22.6 %, and 88.9%, respectively, which demonstrated that the material is lightweight and porous. For mechanical testing, it was discovered that FC-GCW with 20% GCW addition had the highest average compressive strength of 0.94 MPa and 2.01 MPa for 7 and 28 days, respectively. This research's contribution can be applied to areas where low densities are preferred and low compressive strength is required, such as replacing existing soil to balance foundations, profiling positive slope to drains of flat concrete roofs, lightweight raft foundation in housing construction, trench reinstatement, soil stabilization by backfill of embankments, floor levelling, blinding concrete for thermal insulation purposes, pipefilling, lightweight foundations, and trench reinstatement

Pursuit differential game described by infinite first order 2-systems of differential equations

We study a pursuit differential game problem for infinite first order 2-systems of differential equations in the Hilbert space l2. Geometric constraints are imposed on controls of players. If the state of system coincides with the origin, then we say that pursuit is completed. In the game, pursuer tries to complete the game, while the aim of evader is opposite. The problem is to find a formula for guaranteed pursuit time. In the present paper, an equation for guaranteed pursuit time is obtained. Moreover, a strategy for the pursuer is constructed in explicit form. To prove the main result, we use solution of a control problem

Pursuit differential game described by infinite first order 2-systems of differential equations

We study a pursuit differential game problem for infinite first order 2-systems of differential equations in the Hilbert space l2. Geometric constraints are imposed on controls of players. If the state of system coincides with the origin, then we say that pursuit is completed. In the game, pursuer tries to complete the game, while the aim of evader is opposite. The problem is to find a formula for guaranteed pursuit time. In the present paper, an equation for guaranteed pursuit time is obtained. Moreover, a strategy for the pursuer is constructed in explicit form. To prove the main result, we use solution of a control problem

Acoustic Properties of Autoclaved Aerated Concrete (AAC) based on Gypsum-Ceramic Waste (GCW)

Noise pollution and municipal solid waste (MSW) are two ongoing issues for inhabitants of urban due to the growth development. We need to manage of MSW such as gypsum and ceramic waste properly to solve environment and acoustic issues. To our knowledge, the gypsum and ceramic waste (GCW) are rich in silica and calcium oxide and have been recognized and approved to have a good building material such as lightweight concrete and also have a good sound insulation material. Meanwhile, autoclaved aerated concrete (AAC) is one of the lightweight concrete family members and the major chemical composition is silica, calcium oxide and small amount of iron and aluminum. Due to the similarities of major chemical composition between AAC and GCW, it was interesting to study the acoustic properties of AAC based on GCW as an alternative natural source for partial fine aggregate replacement. The objective of this work was to determine the performance of the acoustic properties of AAC based on GCW in addition to reduce the negative effect of GCW on the environment. The AAC with different composition of GCW (5%, 10%, and 15%wt) has been prepared according to ASTM C1693-09. The compressive strength was in range of 5.08 to 7.10MPa. The sound absorption of all samples has been carried out at range of 350Hz to 2000Hz according to ASTM E1050. The results found that AAC-GCW performed well in terms of sound absorbance but in different frequency range. The sound absorption coefficient was around 0.77 to 0.88 at 1050 – 1350Hz. Our results indicated the GCW can use as an alternative natural source for partial fine aggregate replacement on AAC and has improved the acoustic properties of AAC samples. The best sound absorption coefficient was showed by AAC with 10% wt of GCW i.e 0.88. Generally, AAC-GCW samples have higher sound absorbance coefficient compare to previous studies and suitable for wall application such as partition walls, party walls, and especially for sound insulation material

Acoustic Properties of Autoclaved Aerated Concrete (AAC) based on Gypsum-Ceramic Waste (GCW)

Noise pollution and municipal solid waste (MSW) are two ongoing issues for inhabitants of urban due to the growth development. We need to manage of MSW such as gypsum and ceramic waste properly to solve environment and acoustic issues. To our knowledge, the gypsum and ceramic waste (GCW) are rich in silica and calcium oxide and have been recognized and approved to have a good building material such as lightweight concrete and also have a good sound insulation material. Meanwhile, autoclaved aerated concrete (AAC) is one of the lightweight concrete family members and the major chemical composition is silica, calcium oxide and small amount of iron and aluminum. Due to the similarities of major chemical composition between AAC and GCW, it was interesting to study the acoustic properties of AAC based on GCW as an alternative natural source for partial fine aggregate replacement. The objective of this work was to determine the performance of the acoustic properties of AAC based on GCW in addition to reduce the negative effect of GCW on the environment. The AAC with different composition of GCW (5%, 10%, and 15%wt) has been prepared according to ASTM C1693-09. The compressive strength was in range of 5.08 to 7.10MPa. The sound absorption of all samples has been carried out at range of 350Hz to 2000Hz according to ASTM E1050. The results found that AAC-GCW performed well in terms of sound absorbance but in different frequency range. The sound absorption coefficient was around 0.77 to 0.88 at 1050 – 1350Hz. Our results indicated the GCW can use as an alternative natural source for partial fine aggregate replacement on AAC and has improved the acoustic properties of AAC samples. The best sound absorption coefficient was showed by AAC with 10% wt of GCW i.e 0.88. Generally, AAC-GCW samples have higher sound absorbance coefficient compare to previous studies and suitable for wall application such as partition walls, party walls, and especially for sound insulation material

Effects of oxytetracycline and flunixin meglumine treatments on the haematological and serum biochemistry profiles of goats experimentally induced with Mannheimia haemolytica Pneumonia

Mannheimiosis is one of the common causes of pneumonia caused by Mannheimia haemolytica. Evaluation of the hematological and serum biochemistry changes is critical to determine the effectiveness of the treatment approach in reducing the severity of infection. Healthy goats (n=20) were equally divided into 5 groups: Mannheimia haemolytica 107 concentration was inoculated intranasally to all goats except goats of Group 1 which served as the negative control, Group 2 was the positive control, Group 3 goats treated with oxytetracycline, Group 4 goats were treated with flunixin meglumine, and group 5 received both oxytetracycline and flunixin meglumine treatments. Blood samples were collected at 24 hours, days 5, 7, 9, 11, 14, 21, and 28 post-inoculation for the clinical pathology evaluation through complete blood count and serum biochemistry evaluation. Results showed that post-infection resulted mild fluctuation of the red blood cell parameters in the goats with a decrease in the total white blood cell count (p<0.05). The serum biochemistry shows the total protein, albumin and globulin are within the range with mild increment in creatine kinase, blood urea nitrogen, and gamma glutaryl transferase however there were increased lactate dehydrogenase levels post-infection with Mannheimia haemolytica (p<0.05). In conclusion, oxytetracycline and flunixin meglumine treatments does not have a great influence on the parameters evaluated in goats experimentally induced with Mannheimia haemolytica pneumonia

Pursuit Differential Game Described by Infinite First Order 2-Systems of Differential Equations

We study a pursuit differential game problem for infinite first order 2-systems of differential equations in the Hilbert space l2. Geometric constraints are imposed on controls of players. If the state of system coincides with the origin, then we say that pursuit is completed. In the game, pursuer tries to complete the game, while the aim of evader is opposite. The problem is to find a formula for guaranteed pursuit time. In the present paper, an equation for guaranteed pursuit time is obtained. Moreover, a strategy for the pursuer is constructed in explicit form. To prove the main result, we use solution of a control problem

Program peningkatan pendapatan usahawan kecil sederhana melalui penggunanan sayur berserat jagung muda

Objecktif am modul ini adalah untuk memberi pengetahuan kepada masyarakat tentang kegunaan sayur jagung muda di dalam produk makanan berfungsi. Menurut beberapa hasil kajian yang lepas, kandungan serat dan nutrisi yang tinggi di dalam sayur ini mampu memberikan kesan yang positif kepada kesihatan seperti menstabilkan paras gula dalam darah, memberikan rasa kenyang yang lebih lama dan dapat meningkatkan pengambilan serat harian