Izvorni znanstveni članak

https://doi.org/https://doi.org/10.64486/m.65.4.8

Mechanical Properties and Frost Resistance of Ce-ment-Modified Soil Treated with Sucrose-NaCl Composite for Subgrades in Cold-Region Metallurgical Plants

Wenqi Liu ; University Science and Technology Liaoning, College of applied technology, Anshan, China *
Yu He ; Northeastern University, School of Resources & Civil Engineering, Shenyang, China *

* Dopisni autor.

Sažetak

Subgrade infrastructure in metallurgical plants located in cold regions is highly susceptible to deterioration from freeze-thaw (F-T) cycles and performance loss due to delays between mixing and compaction. This study investigates a compo-site chemical admixture of sucrose and sodium chloride (NaCl) to enhance ce-ment-stabilized soils for subgrade applications. Laboratory testing included standard Proctor compaction to determine density configurations, unconfined compressive strength (UCS) testing under simulated operational delay periods (0–3) h, and strict freeze-thaw (F-T) cyclic evaluations for durability profiling. Results identified an optimal dosage of 0.08 % sucrose and 1.0 % NaCl (by cement mass). This composite mix achieved a maximum dry density of 2.136 g·cm⁻³ (97.96 % of the non-admixed control), increased 28-day UCS by 12.88 % to 3.33 MPa, and ex-hibited minimal strength loss after five freeze-thaw cycles. Sucrose effectively pre-served workability to mitigate delay effects, while NaCl concurrently enhanced strength and frost resistance. The proposed admixture system provides a practical solution for constructing durable subgrades in cold-climate metallurgical facilities.

Ključne riječi

cement-stabilized soil; metallurgical plant infrastructure; freeze-thaw durability; chemical admixture; delayed compaction

Hrčak ID:

347936

URI

https://hrcak.srce.hr/347936

Datum izdavanja:

1.10.2026.

Posjeta: 15 *