The Mechanical Properties and Microstructural Evolution Mechanism of Carbonation-Cured Loess with Varying MgO Content.

Kaiyuan Yang, Longqi Liu, Zhenhao Fan, Xinting Lu, Changqing Jia, Xingcan Mu, Bin Liu, Jianbin Zheng

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Article in Materials (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Authors and funding

8 authors.

Kaiyuan YangTransportation Institute, Inner Mongolia University, Hohhot 010020, China.

Longqi LiuTransportation Institute, Inner Mongolia University, Hohhot 010020, China.ORCID 0000-0001-6850-7068

Zhenhao FanChina Electronics Technology Group Corporation 29th Research Institute, Chengdu 610036, China.

Xinting LuState Grid (Jinhua) Integrated Energy Service Company, No. 98 Jiefang East Road, Jinhua 321000, China.

Changqing JiaTransportation Institute, Inner Mongolia University, Hohhot 010020, China.

Xingcan MuTransportation Institute, Inner Mongolia University, Hohhot 010020, China.

Bin LiuTransportation Institute, Inner Mongolia University, Hohhot 010020, China.

Jianbin ZhengGeneral Office, Baotou Open University, Baotou 014010, China.

Funding

Department of Science and Technology of Inner Mongolia Autonomous Region 2025MS05038

6 · The paper itself

Abstract

In alignment with global carbon neutrality goals, this study investigates the regulatory role of magnesium oxide (MgO) content on the macro-micro properties of carbonation-cured collapsible loess from the Hohhot region. While MgO carbonation is established for soil stabilization, the quantitative influence of MgO dosage on the specific phase evolution pathways and mechanical enhancement within the unique macro-porous fabric of aeolian loess remains poorly understood. Addressing this, we systematically examined loess specimens amended with varying MgO contents (10% to 30%) over carbonation periods up to 24 h. Unconfined compressive strength (UCS) tests, X-ray diffraction (XRD), and scanning electron microscopy (SEM) were employed to correlate mechanical performance with mineralogical and microstructural evolution. Results indicate that MgO content acts as a primary regulator of the carbonation process. Higher MgO dosages substantially increased CO

Indexed as

collapsible loessMgO contentmicrostructural evolutionunconfined compressive strength

Identifiers

PMID42195747

DOI10.3390/ma19102107

PMCPMC13208933

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