Shrinkage and Cracking Characteristics of Dredged Sludge Containing Straw Fiber Under Different Initial Water Contents DOI Creative Commons
Hongxia Qiao,

Miaomiao Song,

Guizhong Xu

et al.

Buildings, Journal Year: 2024, Volume and Issue: 15(1), P. 97 - 97

Published: Dec. 30, 2024

Dredged sludge usually has high water content and poor engineering properties, which would be unfavorable for its rapid resource utilization. Meanwhile, straw fiber is an environmentally friendly material improving the mechanical behavior of soil. In this research, a series shrinkage tests were conducted to investigate effects on dredged with content. Four initial contents amounts designed. The crack development recorded throughout test. According test results, reduction in regarding drying time can divided into three stages: constant-rate stage, falling-rate residual stage. At evaporation affected significantly by fiber. Compared sample without fiber, influence depends upon shows overall inhibitory effect initiation cracks tested samples. Moreover,

Language: Английский

Enhanced early strength and microstructural stability of dredged sludge using CPCS curing agent DOI
Dong Meng,

Xiaodong Wen,

Lei Lang

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 466, P. 140219 - 140219

Published: Feb. 5, 2025

Language: Английский

Citations

0
Optimization of Technical Parameters for the Vacuum Preloading-Flocculation-Solidification Combined Method for Sustainable Sludge Utilization DOI Open Access
Chao Han,

Hongwu Li,

Kun Duan

et al.

Sustainability, Journal Year: 2025, Volume and Issue: 17(6), P. 2710 - 2710

Published: March 19, 2025

High-water content dredged sludge from waterways, with potential for sustainable use as high-performance fillers, was effectively treated using the vacuum preloading-flocculation-solidification combined method (denoted VP-FSCM). This study investigated effect of flocculant and curing agent dosages on solidification initially poor mechanical properties. Ground granulated blast-furnace slag (GGBS) ordinary Portland cement (OPC) were selected composite agents, while anionic polyacrylamide (APAM) slaked lime used a mixed flocculant. Laboratory experiments conducted to examine effects different agents flocculants deposition dehydration, strength characteristics, water after curing, well spatial distribution them under method. Additionally, conventional solidified by GGBS OPC GCSM) also compared. The results indicate that increasing dosage 4.5% 10.5% enhances shear samples VP-FSCM up 3–5 times compared those GCSM. optimal ratio is GGBS/OPC = 1, optimum composed APAM at 0.125% 1.5%. When admixture optimal, it allows better utilization advantages coupling such flocculation preloading, chemical thereby significantly improving properties sludge.

Language: Английский

Citations

0
Evolutionary Behaviors of Straw-Reinforced Slurry for Sustainable Management of Dredging Sediment: Rheological and Fertility Properties DOI
Chengchun Qiu,

Liwei Xu,

Weijuan Geng

et al.

Waste and Biomass Valorization, Journal Year: 2024, Volume and Issue: 16(3), P. 1057 - 1071

Published: Oct. 30, 2024

Language: Английский

Citations

2
Shrinkage and Cracking Characteristics of Dredged Sludge Containing Straw Fiber Under Different Initial Water Contents DOI Creative Commons
Hongxia Qiao,

Miaomiao Song,

Guizhong Xu

et al.

Buildings, Journal Year: 2024, Volume and Issue: 15(1), P. 97 - 97

Published: Dec. 30, 2024

Dredged sludge usually has high water content and poor engineering properties, which would be unfavorable for its rapid resource utilization. Meanwhile, straw fiber is an environmentally friendly material improving the mechanical behavior of soil. In this research, a series shrinkage tests were conducted to investigate effects on dredged with content. Four initial contents amounts designed. The crack development recorded throughout test. According test results, reduction in regarding drying time can divided into three stages: constant-rate stage, falling-rate residual stage. At evaporation affected significantly by fiber. Compared sample without fiber, influence depends upon shows overall inhibitory effect initiation cracks tested samples. Moreover,

Language: Английский

Citations

0