Evaluation of the improvement effect of cement-stabilized clays with different solidifying agent addition and water content

Zhang, Zichen; Omine, Kiyoshi; Flemmy, Samuel Oye

doi:10.1007/s10163-022-01477-8

Cited by 4 publications

(3 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The research by Zhang et al demonstrated that the stabilization strength of high-watercontent dredged sludge using solidifiers is highly sensitive to water content, indicating that improvement in strength is easily affected by water content [46]. Although DF is advantageous in stabilizing high-water-content WDC, it is recommended to pair it with dewatering methods to achieve improvement under conditions of a low solidifier mixing ratio in WDC by reducing the natural water content.…”

Section: Application Of a Simple Vertical Dewatering Device For On-si...mentioning

confidence: 99%

“…In previous studies, Zhang et al proposed a generalized empirical equation for K L -q c by introducing a new parameter, K L . The K L (K L = C/(w/w L ) dL ) represents the solidifier correction value considering the influence of water content/liquid limit ratio (w/w L ) [46]. In the empirical equation for K L , the water content influence factor dL balances the effect of water content and solidifier mixing amount on the improvement strength q c .…”

Section: Evaluation Of Improvement Effect Of Solidifier-stabilized De...mentioning

confidence: 99%

See 1 more Smart Citation

Feasibility Study of Low-Environmental-Load Methods for Treating High-Water-Content Waste Dredged Clay (WDC)—A Case Study of WDC Treatment at Kumamoto Prefecture Ohkirihata Reservoir in Japan

Zhang

Omine

et al. 2023

Sustainability

Self Cite

View full text Add to dashboard Cite

The effective and sustainable treatment of high-water-content waste dredged clay (WDC) remains a significant challenge in water conservancy engineering. In this study, we focused on the treatment of WDC produced by Kumamoto Ohkirihata Reservoir. The study examined the effect of two types of cement-based solidifiers, namely, ordinary Portland cement (OPC) and cement–fly ash agent (DF), on three clay samples collected from different locations. The cone index test was used to assess the samples’ properties. The dosage of cement required for effective improvement with DF was significantly reduced (by about 47–55%), compared to OPC. Moreover, the dewatering efficiency of WDC improved by the simple dewatering method of vertically placing environmental protection materials. Within seven days, the average water content of the WDC decreased to below the liquid limit compared with natural air drying. Finally, the dosage of DF required to stabilize the WDC under effective improvement conditions was reduced by 37–58%, which is higher than the dosage of OPC reduction (22–50%). The reduction in water content reduced the pore space of the soil particles, benefiting the internal bonding of DF-stabilized clay. Dewatering methods facilitate the use of DF solidifiers, facilitating sustainable and environmentally friendly improvement in WDC.

show abstract

Section: Application Of a Simple Vertical Dewatering Device For On-si...mentioning

confidence: 99%

Section: Evaluation Of Improvement Effect Of Solidifier-stabilized De...mentioning

confidence: 99%

Feasibility Study of Low-Environmental-Load Methods for Treating High-Water-Content Waste Dredged Clay (WDC)—A Case Study of WDC Treatment at Kumamoto Prefecture Ohkirihata Reservoir in Japan

Zhang

Omine

et al. 2023

Sustainability

Self Cite

View full text Add to dashboard Cite

show abstract

“…As the base/bottom base material for roads, cement-stabilized soil has the following characteristics compared with cement-stabilized granules [1][2][3][4][5][6]: (1) more cement; (2) local materials can be used and stone can be saved, which can produce obvious economic and environmental benefits; (3) poor water stability; and (4) low strength. Based on the above points, by adding an organic liquid curing agent to cement-stabilized soil, the goal of reducing the cement dosage, increasing the strength, and improving the water stability can be achieved.…”

Section: Introductionmentioning

confidence: 99%

Effects of Wetting–Drying Cycles on the Macro and Micro Properties of the Cement-Stabilized Soil with Curing Agent

Hu,

Li,

Yin

et al. 2024

Buildings

View full text Add to dashboard Cite

Cement-stabilized soil is a commonly used pavement base/bottom base material. Adding a suitable curing agent to cement-stabilized soil can effectively reduce the dosage of cement, meet the strength requirements, and also greatly improve its water stability. In this paper, three kinds of cement dosage (6%, 8%, and 10%) of cement-stabilized soil were selected to add a 0.04% organic liquid curing agent, and then compared with high-dose cement (10% and 12%)-stabilized soil. The influence of wetting–drying cycles on the mechanical properties of the five stabilized soils was discussed. The mineral composition of cement-stabilized soils before and after the addition of a curing agent was analyzed by X-ray diffraction (XRD), and the microscopic morphology of 10% cement-stabilized soils with a curing agent was studied by scanning electron microscopy (SEM). The macroscopic test shows that the unconfined compressive strength of solidified cement-stabilized soil can be divided into three stages with the increase in the times of the wetting–drying cycles, which are the rapid decay stage, stable enhancement stage, and stable decay stage. The wetting–drying stability coefficient first increases, and then decreases with the increase in the times of the wetting–drying cycles. The microscopic test shows that the addition of a curing agent can enhance the content of hydration products in the cement-stabilized soil specimen; at the curing age of 28 d, with the increase in the times of the wet–dry cycles, the structure of the solidified cement-stabilized soil gradually broke down. The surface porosity P and pore diameter d showed an overall upward trend but decreased at the fifth wetting–drying cycle. The pore orientation weakened. The results show that the resistance of cement-stabilized soil with a curing agent is obviously better than that of cement-stabilized soil under wet–dry conditions.

show abstract

Mechanical strength characteristics of saline soil stabilized by all-solid waste cementitious material based on projection pursuit regression modeling

Gong,

Zhan,

Gong

et al. 2023

J Mater Cycles Waste Manag

View full text Add to dashboard Cite

Evaluation of the improvement effect of cement-stabilized clays with different solidifying agent addition and water content

Cited by 4 publications

References 35 publications

Feasibility Study of Low-Environmental-Load Methods for Treating High-Water-Content Waste Dredged Clay (WDC)—A Case Study of WDC Treatment at Kumamoto Prefecture Ohkirihata Reservoir in Japan

Feasibility Study of Low-Environmental-Load Methods for Treating High-Water-Content Waste Dredged Clay (WDC)—A Case Study of WDC Treatment at Kumamoto Prefecture Ohkirihata Reservoir in Japan

Effects of Wetting–Drying Cycles on the Macro and Micro Properties of the Cement-Stabilized Soil with Curing Agent

Mechanical strength characteristics of saline soil stabilized by all-solid waste cementitious material based on projection pursuit regression modeling

Contact Info

Product

Resources

About