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All Outputs (19)

Recycling biopolymer stabilised earthen construction materials using β-mannanase (2024)
Journal Article
Muguda, S., & Wyndham, M. (2024). Recycling biopolymer stabilised earthen construction materials using β-mannanase. Construction and Building Materials, 457, Article 139334. https://doi.org/10.1016/j.conbuildmat.2024.139334

Biopolymers like guar and xanthan gums are considered to be sustainable soil stabilisers that can improve engineering properties of earthen construction materials. Recent studies indicate that water-based soil washing has achieved partial success in... Read More about Recycling biopolymer stabilised earthen construction materials using β-mannanase.

A non-hysteretic simplification to the Glasgow Coupled Model (GCM) (2024)
Presentation / Conference Contribution
Mutsvairo, T., Lloret-Cabot, M., Hughes, P., Muguda-Viswanath, S., & Dias, A. S. (2024, April). A non-hysteretic simplification to the Glasgow Coupled Model (GCM). Presented at 2024 UK Association for Computational Mechanics Conference, Durham, UK

The Glasgow Coupled Model (GCM) is an established elasto-plastic constitutive model developed to capture the coupled hydro-mechanical response of unsaturated soils. This study highlights the unique capabilities of the GCM in modelling the water ret... Read More about A non-hysteretic simplification to the Glasgow Coupled Model (GCM).

An Apparatus to Monitor Suction Evolution and Water Migration within a Soil Mass for Climate-Adaptive Infrastructure (2023)
Presentation / Conference Contribution
Rana, A., Kumar Sharma, A., Kumar, A., Azizi, A., Muguda, S., Osman, A., & Toll, D. G. (2023, July). An Apparatus to Monitor Suction Evolution and Water Migration within a Soil Mass for Climate-Adaptive Infrastructure. Presented at Geo-Risk 2023, Arlington, Virginia

The present study investigates the potential utility of a capillary barrier system that limits water infiltration into the underlying soil. This was achieved by developing a cylindrical apparatus capable of monitoring matric suction and water content... Read More about An Apparatus to Monitor Suction Evolution and Water Migration within a Soil Mass for Climate-Adaptive Infrastructure.

Evaluation of recycling capabilities of bio-stabilised earth building materials (2022)
Presentation / Conference Contribution
Cuccurullo, A., Muguda, S., Gallipoli, D., & Perlot, C. (2022, March). Evaluation of recycling capabilities of bio-stabilised earth building materials. Paper presented at RILEM International Conference on Earthen Construction, Université Gustave Eiffel, Paris

Earth building materials are considered sustainable due to the inherent low embodied and operational energies, the ability to buffer hygrothermal fluctuations and the recycling potential. Despite these advantageous attributes, they are not employed i... Read More about Evaluation of recycling capabilities of bio-stabilised earth building materials.

Cross-linking of biopolymers for stabilising earthen construction materials (2021)
Journal Article
Muguda, S., Hughes, P., Augarde, C., Perlot, C., Bruno, A., & Gallipoli, D. (2022). Cross-linking of biopolymers for stabilising earthen construction materials. Building Research and Information, 50(5), 502-514. https://doi.org/10.1080/09613218.2021.2001304

Biopolymers are promising potential soil stabilizers due to their ease of application and stabilization efficacy. Biopolymers are biologically occurring polymers that form hydrogels when added to soil in the presence of water. Hydrogels are three-dim... Read More about Cross-linking of biopolymers for stabilising earthen construction materials.

Durability and hygroscopic behaviour of biopolymer stabilised earthen construction materials (2020)
Journal Article
Muguda, S., Lucas, G., Hughes, P. N., Augarde, C. E., Perlot, C., Bruno, A. W., & Gallipoli, D. (2020). Durability and hygroscopic behaviour of biopolymer stabilised earthen construction materials. Construction and Building Materials, 259, Article 119725. https://doi.org/10.1016/j.conbuildmat.2020.119725

Earthen construction materials are often chemically stabilised in order to improve their durability against water-induced deterioration. However, chemical stabilisers like cement can negatively affect the hygroscopic behaviour and recyclability poten... Read More about Durability and hygroscopic behaviour of biopolymer stabilised earthen construction materials.

A review of factors affecting undrained strength of fine-grained soils at consistency limits. (2019)
Presentation / Conference Contribution
Nagaraj, H., & Muguda, S. (2019, December). A review of factors affecting undrained strength of fine-grained soils at consistency limits. Presented at The XVII European Conference on Soil Mechanics and Geotechnical Engineering, Reykjavik Iceland

Estimation of remoulded undrained shear strength of fine-grained soils over a wide range of water content encountered in civil engineering practice is very essential for geotechnical design. Engineers predict the strength through simple index propert... Read More about A review of factors affecting undrained strength of fine-grained soils at consistency limits..

Geotechnical characterisation of recycled biopolymer-stabilised earthen materials (2019)
Presentation / Conference Contribution
Muguda, S., Hughes, P., Augarde, C., Perlot, C., Bruno, A., & Gallipoli, D. (2019, December). Geotechnical characterisation of recycled biopolymer-stabilised earthen materials. Presented at The XVII European Conference on Soil Mechanics and Geotechnical Engineering, Reykjavik Iceland

Earthen structures (i.e. structural units manufactured from soil) are often regarded as sustainable forms of construction due to their characteristically low carbon footprint. Unstabilised earthen materials can easily be recycled or disposed, however... Read More about Geotechnical characterisation of recycled biopolymer-stabilised earthen materials.

Discussion on "Factors influencing undrained strength of fine-grained soils at high water contents" (2019)
Journal Article
Nagaraj, H. B., Sravan, M. V., & Deepa, B. S. (2021). Discussion on "Factors influencing undrained strength of fine-grained soils at high water contents". Geomechanics and Geoengineering, 16(4), 325-329. https://doi.org/10.1080/17486025.2019.1670875

Following the standard testing procedures, many well-cited publications report variations in undrained strength at the liquid limit obtained by both percussion cup and fall-cone tests. Assuming fixed strength of undrained strength at liquid limit and... Read More about Discussion on "Factors influencing undrained strength of fine-grained soils at high water contents".

Preliminary study on use of biopolymers in earthen construction (2018)
Presentation / Conference Contribution
Muguda, S., Booth, S., Hughes, P., Augarde, C., Perlot, C., Bruno, A., & Gallipoli, D. (2018, August). Preliminary study on use of biopolymers in earthen construction. Presented at 7th International Conference on Unsaturated Soils, Hong Kong, China

Biopolymers are known to achieve significant soil stabilisation when working with small quan-tities. There have been studies understanding their effects on permeability, strength, compressibility and dura-bility, however, there are few studies explor... Read More about Preliminary study on use of biopolymers in earthen construction.

Factors influencing undrained strength of fine-grained soils at high water contents (2018)
Journal Article
Nagaraj, H., Sravan, M., & Deepa, B. (2018). Factors influencing undrained strength of fine-grained soils at high water contents. Geomechanics and Geoengineering, 13(4), 276-287. https://doi.org/10.1080/17486025.2018.1445873

Understanding the undrained strength of fine-grained soils has been of interest to geotechnical researchers from many practical considerations. In several civil engineering applications, water content of soil is quite high being near or above the liq... Read More about Factors influencing undrained strength of fine-grained soils at high water contents.

Mechanical properties of biopolymer-stabilised soil-based construction materials (2017)
Journal Article
Muguda, S., Booth, S. J., Hughes, P. N., Augarde, C. E., Perlot, C., Bruno, A. W., & Gallipoli, D. (2017). Mechanical properties of biopolymer-stabilised soil-based construction materials. Géotechnique Letters, 7(4), 309-314. https://doi.org/10.1680/jgele.17.00081

Soil-based construction materials are of interest as structural building materials due to their green credentials, as well as being present in many historical structures. For effective conservation of the latter, and to motivate greater uptake for ne... Read More about Mechanical properties of biopolymer-stabilised soil-based construction materials.

Potential Use of Enzymes in the Preparation of Compressed Stabilized Earth Blocks (2017)
Journal Article
Muguda Viswanath, S., & Nagaraj, H. B. (2017). Potential Use of Enzymes in the Preparation of Compressed Stabilized Earth Blocks. Journal of Materials in Civil Engineering, 29(9), Article 04017103. https://doi.org/10.1061/%28asce%29mt.1943-5533.0001947

Compressed stabilized earth blocks (CSEBs) prepared with an enzyme along with a combination of cement and lime have been shown to have a nearly 50% increase in wet compressive strength after two years of aging compared with blocks prepared without en... Read More about Potential Use of Enzymes in the Preparation of Compressed Stabilized Earth Blocks.

Influence of soil gradation, proportion and combination of admixtures on the properties and durability of CSEBs (2016)
Journal Article
Nagaraj, H. B., Rajesh, A., & Sravan, M. V. (2016). Influence of soil gradation, proportion and combination of admixtures on the properties and durability of CSEBs. Construction and Building Materials, 110, 135-144. https://doi.org/10.1016/j.conbuildmat.2016.02.023

As it is well known that grading of soil influences the properties of compressed stabilized earth blocks (CSEBs), a need was felt to explore the possibility of using soils as found in nature for their production without physical modification or incre... Read More about Influence of soil gradation, proportion and combination of admixtures on the properties and durability of CSEBs.

Correlation of compaction characteristics of natural soils with modified plastic limit. (2014)
Journal Article
Nagaraj, H. B., Reesha, B., Sravan, M. V., & Suresh, M. R. (2015). Correlation of compaction characteristics of natural soils with modified plastic limit. Transportation Geotechnics, 2, 65-77. https://doi.org/10.1016/j.trgeo.2014.09.002

Compaction characteristics of soils being very important from field application point of view, any attempt to develop correlation equation to predict the same should be rational and universally applicable. It has been reported in the literature that... Read More about Correlation of compaction characteristics of natural soils with modified plastic limit..

Role of lime with cement in long-term strength of Compressed Stabilized Earth Blocks (2014)
Journal Article
Nagaraj, H. B., Sravan, M. V., Arun, T. G., & Jagadish, K. S. (2014). Role of lime with cement in long-term strength of Compressed Stabilized Earth Blocks. International journal of sustainable built environment, 3(1), 54-61. https://doi.org/10.1016/j.ijsbe.2014.03.001

Compressed Stabilized Earth Blocks (CSEBs) are manufactured using stabilizers to provide adequate compressive strength and durability, so, as to make them suitable as building blocks. Though cement is a popular stabilizer used in manufacture of CSEBs... Read More about Role of lime with cement in long-term strength of Compressed Stabilized Earth Blocks.