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Your search keyword '"Likitlersuang, Suched"' showing total 443 results
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443 results on '"Likitlersuang, Suched"'

3. Prediction of Ground Surface Settlements Induced by Deep Excavation Using a Closed-Form Solution

Author

Nguyen, Thanh Son, Likitlersuang, Suched, Lai, Van Qui, Phan, Trung Nghia, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Duc Long, Phung, editor, and Dung, Nguyen Tien, editor

Published
2024
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4. Random Field Modelling of Soil Shear Strength for Reliability Analysis of Deep Excavation in Sand

Author

Nguyen, Thanh Son, Likitlersuang, Suched, Lai, Van Qui, Phan, Trung Nghia, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Reddy, J. N., editor, Luong, Van Hai, editor, and Le, Anh Tuan, editor

Published
2024
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30. Shearing behaviour of vegetated soils with growing and decaying roots

Author

Kamchoom, Viroon, Leung, Anthony Kwan, Boldrin, David, Sakolpanya, Tapakorn, Wu, Zhaoyi, and Likitlersuang, Suched

Subjects
Shear strength of soils -- Analysis, Roots (Botany) -- Environmental aspects, Soil structure -- Analysis, Earth sciences
Abstract

Plant roots affect the soil shear strength, but the temporal dynamics of roots such as growth and decay due to different mortality means have rarely been considered. This study investigates the effects of root growth and decay on the changes in root biomechanical properties and the shearing behaviour of vegetated soils. Columns of compacted soils were grown with a grass species, Cynodon dactylon. The grass was grown for 6 months, followed by burning or herbicide applications to introduce root decay. The top part of each column was used for direct shear tests, whilst the roots collected from the bottom part were used for the measurements of root tensile and chemical properties. The vegetated soils displayed greater shear strength and larger dilatancy, which were attributable to the growth-induced increase in the root cellulose content, and thus the root tensile strength and modulus. Root decay, upon burning or herbicide use, caused significant declines in the root tensile properties, which translated to the reductions in soil dilatancy and soil shear strength lower than those of the fallow soil. Herbicide use introduced a much faster and significant loss of root reinforcement than burning because of the more severe decay and loss of root biomechanical properties. Key words: soil bioengineering, root reinforcement, root biomechanics, root decay, shear strength, dilatancy Les racines des plantes affectent la resistance au cisaillement du sol, mais la dynamique temporelle des racines, telle que la croissance et la decomposition dues a differents moyens de mortalite, a rarement ete prise en compte. Cette etude examine les effets de la croissance et de la decomposition des racines sur les changements des proprietes biomecaniques des racines et le comportement de cisaillement des sols vegetalises. Des colonnes de sols compactes ont ete cultivees avec une espece de graminee, Cynodon dactylon. L'herbe a ete cultivee pendant 6 mois, suivis d'un brulage ou d'applications d'herbicides pour introduire la decomposition des racines. La partie superieure de chaque colonne a ete utilisee pour les tests de cisaillement direct, tandis que les racines collectees dans la partie inferieure ont ete utilisees pour les mesures des proprietes de traction et chimiques des racines. Les sols vegetalises presentaient une plus grande resistance au cisaillement et une plus grande dilatation, qui etaient attribuables a l'augmentation, induite par la croissance, de la teneur en cellulose des racines et donc de la resistance a la traction et du module des racines. La decomposition des racines, lors du brulage ou de l'utilisation d'herbicides, a entraine une baisse significative des proprietes de traction des racines, qui s'est traduite par des reductions de la dilatance et de la resistance au cisaillement du sol inferieures a celles du sol en jachere. L'utilisation d'herbicides a entraine une perte beaucoup plus rapide et significative du renforcement des racines que le brulage, en raison de la decomposition plus severe et de la perte des proprietes biomecaniques des racines. [Traduit par la Redaction] Mots-cles : bio-ingenierie des sols, renforcement des racines, biomecanique des racines, decomposition des racines, resistance au cisaillement, dilatation, Introduction Plants in soil bioengineering have been used to reinforce shallow soils against landslides (Ng et al. 2019). Fibrous roots, as they grow, form a composite material, which displays greater [...]

Published
2022
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43. Enhancing concrete self-healing capabilities of Bacillus sphaericus spores through the encapsulation in biopolymeric microcapsules.

Author

Chuenchom, Chanunda, Intarasoontron, Jirapa, Sorasitthiyanukarn, Feuangthit Niyamissara, Chindasiriphan, Pattharaphon, Jongvivatsakul, Pitcha, Thaiboonrod, Sineenat, Likitlersuang, Suched, Pungrasmi, Wiboonluk, and Rojsitthisak, Pranee

Subjects
SUSTAINABLE construction, CARBOXYMETHYLCELLULOSE, CONSTRUCTION materials, GREEN infrastructure, BACILLUS (Bacteria)
Abstract

This study examined the encapsulation of Bacillus sphaericus LMG 22257 spores in biopolymeric microcapsules (MCs) for use in cement mortar, with a focus on enhancing self-healing properties. Biopolymers, including alginate (ALG), chitosan (CTS), carboxymethyl cellulose (CMC), and ALG/CMC blends at various ratios, were employed to fabricate the MCs through ionotropic gelation and freeze–drying. The physicochemical properties of MCs, including size, morphology, and swelling behavior under simulated concrete conditions, were assessed. Among these, ALG/CMC-MCs exhibited superior characteristics and demonstrated the highest urea hydrolysis activity when incorporated into the mortar, indicating optimal spore protection. Despite an initial decrease in compressive strength, the ALG/CMC blend with an ALG:CMC mass ratio of 6:4 achieved a crack healing efficiency of 96.7% over 28 days under cyclic wet-dry conditions. These findings highlight the potential of biopolymer encapsulation for embedding functional microorganisms in construction materials, contributing to a more durable and sustainable infrastructure. [ABSTRACT FROM AUTHOR]

Published
2024
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