Work

Performance and carbon emission of solid waste-based solidification materials cooperative fiber solidifying soil

Year: 2025

Type: article

Abstract: The mechanical and drying shrinkage characteristics of solid waste-based solidification materials (SBM) cooperative fiber solidifying soil were examined. The microstructure was tested using scanning electron microscopy and mercury intrusion porosimetry. The results revealed that the optimum content for both polyvinyl alcohol (PVA) and basalt fiber (BF) was both 0.3%. The uncontrolled compressive strength and deformation modulus (E50) of SBM incorporating PVA were enhanced by 36% and 107%, respectively. At 28 days of curing, the dry shrinkage of solidified soil recycled aggregate showed a reduction of 70%, reaching 300 με. The presence of abundant ettringite (Aft) in SBM solidified soil acted as shrinkage compensatory. The formation of calcium silicate hydrates (CSH) and Aft on the damaged PVA surface suggests that the bonding effect of PVA with the matrix is superior to that of BF. The porosity of SBM solidified soil was diminished to 27%, with the pores shifting toward smaller sizes. The carbon emission and carbon emissions relative to the performance of SBM were 186 kg/t and 50.3 kg/MPa, respectively.

Source: AIP Advances

DOI: 10.1063/5.0256468

Authors: Benan Shu, Zhi Chen, Guodong Zeng, Maocong Zhu, Keyi Qiu

Institution: Hubei University of Technology

Language: English

Topic: Geotechnical Engineering and Soil Stabilization

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Climate action

Open Access status: gold

Estimated APC paid: $1,350