Unveiling the Mechanisms of Bioenzyme and Biopolymer Sand Stabilization: A Chemical and Microstructural Approach DOI Creative Commons
Geethu Thomas, Ripsa Rani Nayak, Navneet Kumar Gupta

и другие.

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Ноя. 13, 2024

Abstract This paper presents a detailed study of the bio-cementation effect TerraZyme in sands, which has not been understood so far due to micro and mesoscale variations treated soil. The results are compared with those obtained using Xanthan gum for stabilization. Advanced chemical microstructural tests revealed that both additives significantly improved strength sand, significant improvements observed within 30 days curing. modifies elemental structure sand-Kaolin mixtures, whereas acts mainly through weak binding by altering soil matrix. mechanism action is explained detail, giving insights into processes responsible cementation improvement. highlights prospects bio-stabilization methods sustainable ground improvement recommends use natural like biopolymers enzymes place conventional materials cement lime environmentally development.

Язык: Английский

Experimental investigation of sandy soil stabilization using chitosan biopolymer DOI Creative Commons

MohammadReza Amiri Tasuji,

Pooria Ghadir, Amin Hosseini

и другие.

Transportation Geotechnics, Год журнала: 2024, Номер 46, С. 101266 - 101266

Опубликована: Май 1, 2024

The performance of an environmentally friendly biopolymer synthesised from secondary resources to overcome the wind erosion sandy soil was investigated in this study. study employed a multi-scale approach investigate mechanical, erosional, and hydraulic properties soil. At macroscale, experimental techniques such as unconfined triaxial compression tests, permeability measurements, contact angle assessments, tunnel experiments were utilized characterize bulk behavior Concurrently, molecular dynamics (MD) simulations conducted at nanoscale predict surface mechanical characteristics elucidate chemical interactions level. Results show that when outer particles is coated with sparse concentration biopolymer, aerosol inhibitory significant even under extreme storm conditions reaching speeds 140 km/h storms. on impact content, curing time, revealed addition chitosan has ability enhance bonding between significantly atomic insight reveals huge entanglement by Van der Waals interaction. results Unconfined Compressive Strength test indicate enhances compressive strength sand up 320 kPa. Additionally, demonstrated application led 34.2 kPa improvement cohesion sand. Furthermore, analysis decrease conductivity coefficient 1.6 × 10^-6 m/s 5.7 10^-7 m/s, representing reduction approximately 35 %.

Язык: Английский

Процитировано

13
Predicting the UCS of Polyhydroxyalkanoate and Xanthan gum Treated Sandy Soil Using Gradient Boosting Algorithms DOI

Syed Taseer Abbas Jaffar,

Mudassir Iqbal, Xiaohua Bao

и другие.

Journal of Cleaner Production, Год журнала: 2025, Номер unknown, С. 144672 - 144672

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

1
Effect of Varying Curing Conditions on the Strength of Biopolymer Modified Sand DOI Open Access
Kehinde Lemboye, Abdullah Almajed

Polymers, Год журнала: 2023, Номер 15(7), С. 1678 - 1678

Опубликована: Март 28, 2023

Recently, the improvement of engineering properties soil has been centered on using sustainable and eco-friendly materials. This study investigates efficacy three biopolymers: Acacia, sodium alginate, pectin, unconfined compressive strength (UCS) dune sand. The UCS test measured effects biopolymer type concentration, curing intervals temperature, moisture loss. changes in morphology caused by addition were examined via scanning electron microscopy (SEM). Results indicate that biopolymer-modified sand increased with concentration intervals. Varying temperature from 25–110 °C, slightly affected acacia-modified specimen, alginate-modified specimen up to a 85 continued decrease pectin-modified as was 25 110 °C. SEM images indicated biopolymer’s presence within pores significantly contributed strength. Bond decomposition occurs at temperatures greater than °C for alginate sands, whereas bonds remain stable higher In conclusion, all biopolymers show potential robust economic stabilisers.

Язык: Английский

Процитировано

19
Effect of Xanthan Gum on the mechanical properties of fiber-reinforced sandy soil DOI
Qiang Ma, Jiwei Wu,

Yuxia Bai

и другие.

Bulletin of Engineering Geology and the Environment, Год журнала: 2024, Номер 83(5)

Опубликована: Апрель 17, 2024

Язык: Английский

Процитировано

7
Cracking and erosion behaviors of sand–clay mixtures stabilized with microbial biopolymer and palm fiber DOI
Jin Liu,

Wang Zi,

Guochang Hu

и другие.

The Science of The Total Environment, Год журнала: 2023, Номер 905, С. 166991 - 166991

Опубликована: Сен. 13, 2023

Язык: Английский

Процитировано

12
Experimental study of polyurethane cement composite–reinforced soft soil in the thawed layer in permafrost regions DOI
Yuru Wang, Fujun Niu, Zekun Ding

и другие.

Construction and Building Materials, Год журнала: 2024, Номер 420, С. 135622 - 135622

Опубликована: Март 1, 2024

Язык: Английский

Процитировано

5
Mechanical behavior and strengthening mechanism of loess stabilized with xanthan gum and guar gum biopolymers DOI Creative Commons
Xuewen Rong,

S. Deng,

Baozhen Liang

и другие.

Materials Research Express, Год журнала: 2024, Номер 11(10), С. 105305 - 105305

Опубликована: Окт. 1, 2024

Abstract The structural properties of loess are susceptible to change when subjected external loads and complex environments, leading various geological disasters. To investigate the mechanical behavior strengthening mechanism stabilized with biopolymers such as xanthan gum guar gum, especially for soils low bearing capacity stability in engineering applications, we conducted research on improvement soil tests including unconfined compressive strength, disintegration, direct shear, microstructure were conducted. Among four different dosages (0%, 0.5%, 1%, 2%) curing ages (1 day, 3 days, 7 14 days), 2% content biopolymer days had greatest impact loess, Both shear well water solidified improve higher or prolonged time; however, disintegration rate decreases. Microscopic analysis indicates that effectively fill gaps between particles attach particle surfaces, forming fibrous reticular structures interparticle bonding ultimately increase strength loess. Xanthan can enhance erosion resistance water-holding capacity. These outcomes suggest have potential serve environmentally sustainable alternatives conventional stabilizers.

Язык: Английский

Процитировано

4
Efficacy of Acacia Gum Biopolymer in Strength Improvement of Silty and Clay Soils under Varying Curing Conditions DOI Open Access

Muralidaran Vishweshwaran,

Evangelin Ramani Sujatha,

Ateekh Ur Rehman

и другие.

Polymers, Год журнала: 2024, Номер 16(19), С. 2831 - 2831

Опубликована: Окт. 7, 2024

Acacia gum (AG), a polysaccharide biopolymer, has been adopted to improve the strength of three cohesive soils by subjecting them diverse environmental aging conditions. Being and potentially sustainable construction material, AG yielded flexible film-like threads after 48 h upon hydration, its pH value 4.9 varied marginally with stabilized soils. The soil samples for geotechnical evaluation were subjected wet mixing tested under their Optimum Moisture Content (OMC), as determined light compaction method. addition modified consistency indices due presence hydroxyl groups in AG, which also led rise OMC reduction Maximum Dry Unit weight (MDU). Unconfined Compressive Strength (UCS) California Bearing Ratio (CBR) thermal curing at 333 K well on same day sample preparation. least performing condition soil’s CBR was evaluated submerged conditions allowing AG-stabilized specimens air-cure period 1 week. UCS 7 days initial K. A dosage 1.5% 2530 kN/m2 98.3%, respectively, low compressible clay (LCC) temperature viscosity found be 214.7 cP 2% dosage. Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), average particle size determination revealed filling pores gel solution, adsorption, hydrogen bonding, improvements macroproperties.

Язык: Английский

Процитировано

3
Multiscale investigation into the hydrogel-stabilized river bank sand: Sight from NMR and CT technology DOI
Zezhuo Song, Jin Liu, Ying Wang

и другие.

Construction and Building Materials, Год журнала: 2025, Номер 460, С. 139900 - 139900

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Montmorillonite as an “accelerator” for the microbial carbon pump during artificial biocrust construction DOI
Cui Zhang, Keqiang Zhou, Zhen Wang

и другие.

Plant and Soil, Год журнала: 2025, Номер unknown

Опубликована: Фев. 10, 2025

Язык: Английский

Процитировано

0