The document studied the effect of adding granite powder and polypropylene fiber to expansive soil from Egypt to improve its geotechnical properties. Tests found that adding 30% granite powder reduced the soil's free swell index from 120% to 62%, decreased moisture content, and increased maximum dry density. At 30% granite powder, the soil's cohesion increased from 0.46 to 0.72 kg/cm2 and friction angle rose from 15.38 to 24.23 degrees. However, adding polypropylene fiber along with granite powder did not significantly further improve the soil's properties. A series of compaction, consolidation and direct shear tests were performed to evaluate the treated soil.
Now-a-days disposal of different wastes materials produced from agricultural and industrial
residuals is a great problem. These materials pose environmental pollution in the nearby locality. As
a result, there has been a trend towards recycling the waste materials into a highway construction
system. Valuable benefits in terms of economic and environmental gains are possible. Two types of
wastes materials, rice husk and sawdust were used to improve the properties of the clayey subgrade
soil. A procedure was adopted to quantify the beneficial effect of subgrade soils stabilization benefits
which base on the extension of pavement service life and reduction in the base course thickness.
Results show that both types of wastes materials helps in great improvement of soil properties as
California bearing ratio and unconfined compressive strength to use in the construction of highways
Now-a-days disposal of different wastes materials produced from agricultural and industrial
residuals is a great problem. These materials pose environmental pollution in the nearby locality. As
a result, there has been a trend towards recycling the waste materials into a highway construction
system. Valuable benefits in terms of economic and environmental gains are possible. Two types of
wastes materials, rice husk and sawdust were used to improve the properties of the clayey subgrade
soil. A procedure was adopted to quantify the beneficial effect of subgrade soils stabilization benefits
which base on the extension of pavement service life and reduction in the base course thickness.
Results show that both types of wastes materials helps in great improvement of soil properties as
California bearing ratio and unconfined compressive strength to use in the construction of highways
Evaluation of volumetric shrinkage ofmarble dust soil compositeeSAT Journals
Abstract Locally available reddish soil was analysed for volumetric shrinkage strain by treating it with marble dust till 40%. Volumetric shrinkage strain in soils indicates the variation in volume of compacted soil, which will result in inducing cracking of soil sample. This property majorly affects soil used as liner material since shrinkage and subsequent cracking results in voids, which interrupt the proper functioning of liner. The soil sample were compacted using standard and modified Proctor compactive effort using moulding water contents -2, 0 and +2 percentage relative to optimum. The soil samples compacted at required water content and corresponding density were extruded from the compaction mould and kept fordrying, till it was completely dry. The variation in volume and weight of sample is recorded each consecutive 5 days. The results obtained indicated that the volumetric shrinkage strain were large within the first five days of drying. The weight also found to decrease largely within first five days of drying. The VSS value was found to decrease till 25 percentage marble dust addition and there after increase slightly. It was also found to increase with higher moulding water content. Using the results, compaction plane of acceptable zones were also plotted, from which marble dust addition percentages satisfying the regulatory value of VSS ≤ 4% is proposed as 25%. Keywords:Marble dust, Landfill liner, Compactive effort, Hydraulic conductivity, Volumetric shrinkage strain, Relative to optimum
Physical and mechanical properties of composite brick from cement mortar, fly...eSAT Journals
Abstract Responding to the need of minimizing the extraction of natural resources like sand and lime, this study attempted to use industrial wastes such as fly ash and rubber crumbs as substitute materials in making composite brick. A composite brick was produced by varying the rubber crumbs composition, as sand substitute in the mixture, from 1030 wt.% relative to total aggregate weight. Fly ash, 20 wt.% relative to cement and fly ash weight, was used as binder substitute. After 28 days of curing, composite brick was tested in terms of compressive strength, density and water absorption capacity. Compressive test showed that the brick can only be used in less impacted area considering that it does not meet the minimum standard to be considered as substitute to the commercially available brick. A decreasing trend of its compressive strength is observed as the amount of rubber crumbs increases from 10 to 30% of the total aggregate weight. The addition of light rubber crumbs and fly ash desirably decrease the density of the composite brick when compared to those commercially sold in the market. Water absorption test revealed that the produced composite brick is more efficient in minimizing water absorption. This study demonstrated that composite brick can be made using industrial wastes as substitute for aggregate and binder, with huge implication in brick concrete making. Keywords: Composite brick, rubber crumbs, fly ash, and concrete brick
Evaluation of volumetric shrinkage ofmarble dust soil compositeeSAT Journals
Abstract Locally available reddish soil was analysed for volumetric shrinkage strain by treating it with marble dust till 40%. Volumetric shrinkage strain in soils indicates the variation in volume of compacted soil, which will result in inducing cracking of soil sample. This property majorly affects soil used as liner material since shrinkage and subsequent cracking results in voids, which interrupt the proper functioning of liner. The soil sample were compacted using standard and modified Proctor compactive effort using moulding water contents -2, 0 and +2 percentage relative to optimum. The soil samples compacted at required water content and corresponding density were extruded from the compaction mould and kept fordrying, till it was completely dry. The variation in volume and weight of sample is recorded each consecutive 5 days. The results obtained indicated that the volumetric shrinkage strain were large within the first five days of drying. The weight also found to decrease largely within first five days of drying. The VSS value was found to decrease till 25 percentage marble dust addition and there after increase slightly. It was also found to increase with higher moulding water content. Using the results, compaction plane of acceptable zones were also plotted, from which marble dust addition percentages satisfying the regulatory value of VSS ≤ 4% is proposed as 25%. Keywords:Marble dust, Landfill liner, Compactive effort, Hydraulic conductivity, Volumetric shrinkage strain, Relative to optimum
Physical and mechanical properties of composite brick from cement mortar, fly...eSAT Journals
Abstract Responding to the need of minimizing the extraction of natural resources like sand and lime, this study attempted to use industrial wastes such as fly ash and rubber crumbs as substitute materials in making composite brick. A composite brick was produced by varying the rubber crumbs composition, as sand substitute in the mixture, from 1030 wt.% relative to total aggregate weight. Fly ash, 20 wt.% relative to cement and fly ash weight, was used as binder substitute. After 28 days of curing, composite brick was tested in terms of compressive strength, density and water absorption capacity. Compressive test showed that the brick can only be used in less impacted area considering that it does not meet the minimum standard to be considered as substitute to the commercially available brick. A decreasing trend of its compressive strength is observed as the amount of rubber crumbs increases from 10 to 30% of the total aggregate weight. The addition of light rubber crumbs and fly ash desirably decrease the density of the composite brick when compared to those commercially sold in the market. Water absorption test revealed that the produced composite brick is more efficient in minimizing water absorption. This study demonstrated that composite brick can be made using industrial wastes as substitute for aggregate and binder, with huge implication in brick concrete making. Keywords: Composite brick, rubber crumbs, fly ash, and concrete brick
Similar to Effect of Granite Powder and Polypropylene Fiber on Geotechnical Properties of Expansive Soil (20)
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Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/