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Abstract <p>This paper attempts to improve the geotechnical properties of Mershon Kaolinite soil by employing the method of “top-down” nano preparation in which the structure of kaolinite dramatically was disordered through the preparation of ultra-fine particles (&lt; 5.5&#xa0;nm). The physio-chemical advantages of nano-kaolinite including very high specific surface area, filler effects, coating grains, and slight pozzolanic reaction with soft clay soil and ordinary Portland cement (OPC), all resulted in condensation of soil structure via the process made known to self-compacting clay soil. To distinguish the primary and final products of this study, X-ray fluorescence, X-ray diffraction, scanning electron microscope, and atomic force microscope were undertaken. Geotechnical testing methods including Atterberg limits, compaction test, and unconfined compressive strength (UCS) were carried out on 40 mix designs namely “K, KN, KC, and KNC” that were performed with 1, 3, and 5% additives (nano-kaolinite and OPC). Three types of compaction were conceded by increasing the dry density including an increase in ω% for KC mixes, a decrease in ω% for KN mixes, and nearly constant ω% for KNC mixes. After 1, 7, 14, and 28&#xa0;days of curing, significant compaction occurred in KNC-5% arising stress development up to 1663.35 kN/m<sup>2</sup> and 34,756.66 kN/m<sup>2</sup> for UCS and <i>E</i> (elastic modulus), respectively.</p> Graphical Abstract <p></p>

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Self-Compacting Soil Stabilization Using Nano-kaolinite and OPC Blends

  • 期刊论文

  • 发表日期：

    2025年5月28日

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  • Soltani Abolfazl,
  • Sabbaghan Maryam,
  • Moradi Amin

摘要

Abstract

This paper attempts to improve the geotechnical properties of Mershon Kaolinite soil by employing the method of “top-down” nano preparation in which the structure of kaolinite dramatically was disordered through the preparation of ultra-fine particles (< 5.5 nm). The physio-chemical advantages of nano-kaolinite including very high specific surface area, filler effects, coating grains, and slight pozzolanic reaction with soft clay soil and ordinary Portland cement (OPC), all resulted in condensation of soil structure via the process made known to self-compacting clay soil. To distinguish the primary and final products of this study, X-ray fluorescence, X-ray diffraction, scanning electron microscope, and atomic force microscope were undertaken. Geotechnical testing methods including Atterberg limits, compaction test, and unconfined compressive strength (UCS) were carried out on 40 mix designs namely “K, KN, KC, and KNC” that were performed with 1, 3, and 5% additives (nano-kaolinite and OPC). Three types of compaction were conceded by increasing the dry density including an increase in ω% for KC mixes, a decrease in ω% for KN mixes, and nearly constant ω% for KNC mixes. After 1, 7, 14, and 28 days of curing, significant compaction occurred in KNC-5% arising stress development up to 1663.35 kN/m2 and 34,756.66 kN/m2 for UCS and E (elastic modulus), respectively.

Graphical Abstract