The Effect Of The Length Of Immersion On The Value Of California Bearing Ratio (CBR) And A Review Of The Value Of Free Compressive Strength By Testing The Unconfined Compression Test (UCT) Of Peatlands In Lau Mulgap Village, Mardingding District, Karo Regency

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The Effect of Immersion on the Value of California Bearing Ratio (CBR) and a Review of the Value of Free Compressive Strength by Testing the Unconfined Compression Test (UCT) of Peatlands in Lau Mulgap Village, Mardingding District, Karo Regency

Introduction

Peat soils, formed from the decomposition of plant and animal remnants over a long period, possess unique characteristics that make them an interesting subject of study. In Lau Mulgap Village, Mardingding District, Karo Regency, peatlands are the focus of research to reveal the effect of soaking time on the California Bearing Ratio (CBR) value and its free compressive strength through testing the Unconfined Compression Test (UCT). This study aims to investigate the physical characteristics of peat soils, particularly the changes in CBR values and free compressive strength caused by immersion in different periods.

Methodology

Researchers immersed peat soil for 2 days, 4 days, and 6 days, then tested the CBR value and free compressive strength using the laboratory method. The results of the study show that Lau Mulgap Village Peat Land is classified as low ash peat with an ash content of 0.57% and highly acidic peat with a pH value of 4.00. The original peat soil CBR (Unsoaked) value of 1.80% indicates the ability of the soil to withstand relatively low loads.

Results

The longer the immersion time, the CBR value of peat soil decreases. The CBR value of peat soaked for 2 days was 1.70%, 4 days was 1.50%, and 6 days was 1.30%. This shows that immersion causes a decrease in peat soil strength in holding loads. The value of the free compressive strength of the original peat soil was 0.07 kg/cm2, indicating the ability of the soil to withstand the compressive load directly.

Discussion

Decrease in the value of CBR and free compressive strength due to immersion shows that water has an important role in influencing the strength of peat soils. The immersion process causes water to enter the peat soil pores, increase water pore pressure, and reduce soil shear strength. This results in a decrease in the ability of peat soil to withstand loads.

Conclusion

The results of this study provide an important picture of the effect of immersion on the strength of peatlands. Increased immersion time has a negative impact on the value of CBR and the free compressive strength of peat soils, showing that the soaked peat soil has a lower strength compared to peat soils that are not soaked.

Implications

Understanding the effect of immersion on the strength of peat soil is very important in various aspects, such as:

  • Infrastructure Development: Research results can be a basis in planning infrastructure development in areas that have peat soil, especially related to determining the depth of building foundations and land retaining systems.
  • Land Management: This research can help in determining the appropriate peatland management strategies to prevent damage and increase the carrying capacity of the soil.
  • Selection of Construction Materials: Knowledge of the characteristics of peatlands, especially its strength in holding loads, can help in the selection of construction materials that are appropriate for projects in areas that have peatlands.

Future Research Directions

This research opens a way for further research on the effect of immersion on peat soil. Further studies can investigate other factors that affect the strength of peat soils, such as the type and amount of organic matter, as well as environmental conditions. Thus, a more comprehensive understanding of peatlands can be obtained to support the development and management of sustainable natural resources.

Recommendations

Based on the findings of this study, the following recommendations are made:

  • Further research should be conducted to investigate the effect of immersion on peat soil in different environmental conditions.
  • The results of this study should be used as a basis for planning infrastructure development in areas that have peat soil.
  • Peatland management strategies should be developed to prevent damage and increase the carrying capacity of the soil.
  • The selection of construction materials should be based on the characteristics of peatlands, especially its strength in holding loads.

Limitations of the Study

This study has several limitations, including:

  • The study was conducted in a laboratory setting, which may not accurately represent the field conditions.
  • The study only investigated the effect of immersion on peat soil, and other factors that affect the strength of peat soils were not considered.
  • The study only considered the CBR value and free compressive strength of peat soil, and other physical and mechanical properties were not investigated.

Conclusion

In conclusion, this study provides an important picture of the effect of immersion on the strength of peatlands. The results of this study show that increased immersion time has a negative impact on the value of CBR and the free compressive strength of peat soils. The study also highlights the importance of understanding the effect of immersion on the strength of peat soil in various aspects, such as infrastructure development, land management, and selection of construction materials. Further research is needed to investigate other factors that affect the strength of peat soils and to develop a more comprehensive understanding of peatlands.
Frequently Asked Questions (FAQs) about the Effect of Immersion on the Value of California Bearing Ratio (CBR) and a Review of the Value of Free Compressive Strength by Testing the Unconfined Compression Test (UCT) of Peatlands in Lau Mulgap Village, Mardingding District, Karo Regency

Q: What is the California Bearing Ratio (CBR) and why is it important?

A: The California Bearing Ratio (CBR) is a measure of the bearing capacity of a soil, which is its ability to withstand loads without failing. It is an important parameter in geotechnical engineering, as it helps to determine the suitability of a soil for various engineering applications, such as foundation design and pavement construction.

Q: What is the Unconfined Compression Test (UCT) and how does it relate to the study?

A: The Unconfined Compression Test (UCT) is a laboratory test used to determine the compressive strength of a soil. In this study, the UCT was used to measure the free compressive strength of peat soil, which is an important parameter in understanding the behavior of peat soil under different loads.

Q: What is the significance of the study's findings on the effect of immersion on the CBR value of peat soil?

A: The study's findings show that increased immersion time has a negative impact on the CBR value of peat soil, indicating that peat soil becomes weaker and less able to withstand loads as it is immersed for longer periods. This is an important finding, as it highlights the need to consider the effect of immersion on the strength of peat soil in various engineering applications.

Q: How does the study's findings relate to the management of peatlands?

A: The study's findings have important implications for the management of peatlands. By understanding the effect of immersion on the strength of peat soil, land managers can develop strategies to prevent damage and increase the carrying capacity of the soil. This can help to mitigate the negative impacts of peatland degradation and promote sustainable land use practices.

Q: What are the limitations of the study and how can they be addressed in future research?

A: The study has several limitations, including the use of a laboratory setting and the consideration of only a few physical and mechanical properties of peat soil. Future research should aim to address these limitations by conducting field studies and investigating other factors that affect the strength of peat soil.

Q: What are the implications of the study's findings for the selection of construction materials?

A: The study's findings highlight the importance of considering the characteristics of peatlands, including its strength in holding loads, when selecting construction materials. By choosing materials that are suitable for the specific conditions of the peatland, engineers and builders can help to ensure the stability and durability of structures built on peat soil.

Q: What are the future research directions for this study?

A: Future research should aim to investigate other factors that affect the strength of peat soil, such as the type and amount of organic matter, as well as environmental conditions. This will help to develop a more comprehensive understanding of peatlands and support the development and management of sustainable natural resources.

Q: What are the recommendations for practitioners and policymakers based on the study's findings?

A: Based on the study's findings, practitioners and policymakers are recommended to:

  • Consider the effect of immersion on the strength of peat soil in various engineering applications.
  • Develop strategies to prevent damage and increase the carrying capacity of peat soil.
  • Select construction materials that are suitable for the specific conditions of the peatland.
  • Support further research on the effect of immersion on peat soil and the development of sustainable land use practices.

Q: What are the potential applications of the study's findings in real-world scenarios?

A: The study's findings have potential applications in various real-world scenarios, including:

  • Infrastructure development: The study's findings can be used to determine the depth of building foundations and land retaining systems in areas with peat soil.
  • Land management: The study's findings can be used to develop strategies to prevent damage and increase the carrying capacity of peat soil.
  • Construction: The study's findings can be used to select construction materials that are suitable for the specific conditions of the peatland.

Q: What are the potential benefits of the study's findings for society?

A: The study's findings have the potential to benefit society by:

  • Promoting sustainable land use practices and reducing the negative impacts of peatland degradation.
  • Supporting the development of infrastructure and construction projects in areas with peat soil.
  • Enhancing the understanding of peatlands and their behavior under different loads.