Experimental Study on Mechanical Characteristics of Stabilized Soil with Rice Husk Carbon and Calcium Lignosulfonate DOI Open Access

Haiying Zhang,

Hongxia Li,

Hongze Zhang

и другие.

Materials, Год журнала: 2024, Номер 17(21), С. 5201 - 5201

Опубликована: Окт. 25, 2024

In cold regions, the extensive distribution of silt exhibits limited applicability in engineering under freeze–thaw cycles. To address this issue, study employed rice husk carbon and calcium lignosulfonate to stabilize from areas. The mechanical properties stabilized conditions were evaluated through unconfined compressive strength tests triaxial shear tests. Additionally, scanning electron microscopy was utilized analyze mechanisms behind stabilization. Ultimately, a damage model for carbon–calcium constructed based on Weibull function Lemaitre’s principle equivalent strain. findings indicate that as content increases, rate improvement progressively accelerates. With an increase number cycles, deviatoric stress soil gradually diminishes; decline peak becomes more gradual, while reduction cohesion intensifies. decrease angle internal friction is relatively minor. Microscopic examinations reveal cycles pores tend enlarge multiply. established applied loads demonstrates similar pattern between experimental theoretical curves four different confining pressures, reflecting initial rapid followed by steady trend. Thus, it evident outperforms traditional constitutive models, offering accurate depiction variations observed.

Язык: Английский

Numerical simulation study on the mechanical behaviors of frost‐damaged recycled sand powder concrete DOI Open Access

Quan Ma,

Jianzhuang Xiao, Wei Yang

и другие.

Structural Concrete, Год журнала: 2025, Номер unknown

Опубликована: Фев. 12, 2025

Abstract This study established a multiphase, three‐dimensional finite element model of recycled sand powder concrete (RSPC) using the ABAQUS software. A freeze–thaw damage based on deterioration mechanical properties was developed from experimental test results and applied to micro‐scale numerical simulation. The indicated that RSPC deteriorate with increasing cycles, defects in micro‐powder fine aggregates become more pronounced during process. simulation showed maximum error 12.97% compared data (all within 15%), confirming validity model. Specimen failure primarily concentrated at bonding interface between new/old mortar, an overall “X‐shaped” pattern. Furthermore, as number cycles increased, ITZ2 (the interfacial transition zone old mortar) accelerated propagation concrete, significantly amplifying internal RSPC.

Язык: Английский

Процитировано

0
Interfacial strength characteristics of steel fibers embedded in ultra-high-performance concrete under salt freeze-thaw environments DOI

Zihao Yu,

Junyi Yang, Jianguang Xu

и другие.

Construction and Building Materials, Год журнала: 2025, Номер 475, С. 141215 - 141215

Опубликована: Апрель 11, 2025

Язык: Английский

Процитировано

0
Salt-frost damage characterization of simulant multiple ITZs in nano-silica modified recycled aggregate concrete DOI
Hongrui Zhang,

Haidong Xu,

Jiuwen Bao

и другие.

Materials Today Communications, Год журнала: 2024, Номер 41, С. 110296 - 110296

Опубликована: Сен. 4, 2024

Язык: Английский

Процитировано

3
Experimental Study on Mechanical Characteristics of Stabilized Soil with Rice Husk Carbon and Calcium Lignosulfonate DOI Open Access

Haiying Zhang,

Hongxia Li,

Hongze Zhang

и другие.

Materials, Год журнала: 2024, Номер 17(21), С. 5201 - 5201

Опубликована: Окт. 25, 2024

In cold regions, the extensive distribution of silt exhibits limited applicability in engineering under freeze–thaw cycles. To address this issue, study employed rice husk carbon and calcium lignosulfonate to stabilize from areas. The mechanical properties stabilized conditions were evaluated through unconfined compressive strength tests triaxial shear tests. Additionally, scanning electron microscopy was utilized analyze mechanisms behind stabilization. Ultimately, a damage model for carbon–calcium constructed based on Weibull function Lemaitre’s principle equivalent strain. findings indicate that as content increases, rate improvement progressively accelerates. With an increase number cycles, deviatoric stress soil gradually diminishes; decline peak becomes more gradual, while reduction cohesion intensifies. decrease angle internal friction is relatively minor. Microscopic examinations reveal cycles pores tend enlarge multiply. established applied loads demonstrates similar pattern between experimental theoretical curves four different confining pressures, reflecting initial rapid followed by steady trend. Thus, it evident outperforms traditional constitutive models, offering accurate depiction variations observed.

Язык: Английский

Процитировано

1