Development and application of novel high-efficiency composite ultrafine cement grouts for roadway in fractured surrounding rocks

Maolin Tian; Shaojie Chen; Lijun Han; Hongtian Xiao

doi:10.1002/dug2.12058

Deep Underground Science and Engineering ›› 2024, Vol. 3 ›› Issue (1) :53 -69. DOI: 10.1002/dug2.12058

RESEARCH ARTICLE

Development and application of novel high-efficiency composite ultrafine cement grouts for roadway in fractured surrounding rocks

Maolin Tian ¹^,²^,³
, Shaojie Chen ³^,^†
, Lijun Han ⁴
, Hongtian Xiao ¹^,²

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Abstract

• Ultrafine cement, ultrafine fly ash, ultrafine slag, and additives (superplasticizer, AUA, gypsum, and retarder) are used to develop highly efficient composite ultrafine cement (CUC).

• Rheological properties, chemical compositions, microstructure characteristics, and mechanical properties of CUC grouts are presented.

• The new high-efficiency CUC grouts are used to reinforce the broken surrounding rock and to confirm that grouting can effectively reinforce the surrounding rock.

Keywords

broken surrounding rock / composite ultrafine cement (CUC) grouts / grouting material / grouting performance / grouting reinforcement

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Maolin Tian, Shaojie Chen, Lijun Han, Hongtian Xiao. Development and application of novel high-efficiency composite ultrafine cement grouts for roadway in fractured surrounding rocks. Deep Underground Science and Engineering, 2024, 3(1): 53-69 DOI:10.1002/dug2.12058

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2023 The Authors. Deep Underground Science and Engineering published by John Wiley & Sons Australia, Ltd on behalf of China University of Mining and Technology.