硅酸盐学报

火山岩材料在超高性能混凝土中的理化协同增效机理

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刘康宁 ¹^,² , 范定强 ² , 尹天一 ¹ , 陆建鑫 ²^,³ , 余睿 ¹ , 潘智生 ²

硅酸盐学报 | 研究论文 2026,54(10): 3638-3654

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硅酸盐学报 |研究论文 2026 , 54 (10) : 3638 -3654

火山岩材料在超高性能混凝土中的理化协同增效机理

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刘康宁¹^,², 范定强², 尹天一¹, 陆建鑫²^,³, 余睿¹, 潘智生²

作者信息

^1.武汉理工大学，硅酸盐科学与先进建材全国重点实验室，中国　武汉　430070

^2.香港理工大学土木与环境工程系，中国　香港　999077

^3.哈尔滨工业大学（深圳）智能土木与海洋工程学院，中国　广东　深圳　518000

通讯作者:

陆建鑫（1988-），男，博士，教授。

余睿（1986-），男，博士，研究员。

作者简介:

刘康宁（1999-），男，博士研究生。

Physicochemical Synergistic Mechanisms of Volcanic Rock Materials in Ultra-High Performance Concrete

Kangning LIU¹^,², Dingqiang FAN², Tianyi YIN¹, Jianxin LU²^,³, Rui YU¹, Chisun POON²

Affiliations

^1.State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China

^2.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China

^3.School of Intelligent Civil and Ocean Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, Guangdong, China

Corresponding Author:

LU Jianxin (1988-), male, Ph.D., Professor. E-mail: jianxin.lu@polyu.edu.hk

YU Rui (1986-), male, Ph.D., Professor. r.yu@whut.edu.cn

LIU Kangning (1999-), male, Doctoral candidate. E-mail: kang-ning.liu@connect.polyu.hk

出版时间: 2026-05-06 doi: 10.14062/j.issn.0454-5648.20250629

文章导航

摘要

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香港地表面积约50%被火山岩覆盖，每年地下工程产生大量火山岩废料，如何综合利用这些火山岩材料是亟待解决的难题。同时，超高性能混凝土的生产对原材料需求巨大，因此，本工作系统探究了火山岩材料在超高性能混凝土（UHPC）中的应用及其理化协同增强机制。通过引入具有棱角形貌特征的火山岩骨料及火山岩粉，研究了火山岩材料对UHPC宏微观性能的作用规律。结果表明：在UHPC体系中火山岩骨料不会引起明显的碱-硅反应膨胀；适当掺入火山岩骨料与火山岩粉能够提高UHPC材料的工作性能、湿堆积密实度以及力学性能。火山岩骨料掺量不超过50%可降低UHPC的孔隙率，并且其棱角结构能够促使钢纤维向水平方向定向排列，从而显著增强抗折性能。火山岩粉的加入可提升基体的工作性能与抗折强度。火山岩材料的增强效果源于以下3个方面：火山岩自身的强度与标准砂相当，保证了材料的高力学强度；棱角颗粒与圆形颗粒形成“点-面滑动接触”，增加摩擦面积，降低了基体孔隙率，提升了力学性能；火山岩材料的微观粗糙表面与火山灰反应增强了混凝土材料的微观结构与界面特性。研究成果验证了火山岩材料制备优异性能UHPC的可行性，为基于复杂形貌骨料的UHPC设计提供了理论基础与实验依据。

关键词

火山岩 / 超高性能混凝土 / 颗粒形貌 / 火山灰反应

Abstract

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Introduction

Ultra-high performance concrete (UHPC) has emerged as a critical material for achieving structural lightweight design and enhanced longevity in civil engineering due to its exceptional mechanical properties and durability. The optimization of UHPC performance relies on particle gradation design for constructing dense packing systems and interfacial transition zone (ITZ) regulation to enhance matrix continuity. However, traditional UHPC formulations depend on resource-intensive materials such as river sand and silica fume, while existing particle packing theories predominantly assume ideal spherical particles, lacking systematic understanding of the coupling mechanisms associated with natural aggregate complex morphological characteristics. Volcanic rock, characterized by rich active substances and irregular angular morphology, offers a novel material pathway for UHPC performance regulation through multi-scale morphological control when processed into aggregates (replacing standard sand) and mineral admixtures (volcanic rock powder replacing cement).

Methods

The study systematically investigated the physicochemical synergistic enhancement mechanisms of volcanic rock materials in UHPC through comprehensive experimental analysis. Volcanic rock aggregates (VRA) with varying replacement ratios (0%-100%) of standard sand and volcanic rock powder (VRP) with different substitution levels (0%-30%) of cement were incorporated into UHPC mixtures. The modified Andreasen-Andersen model guided the mix design optimization. Fresh properties were evaluated through flow spread tests and wet packing density measurements according to the established method. Mechanical performance was assessed via compressive and flexural strength tests at 3, 7 d, and 28 d. Accelerated ASR expansion was measured using mortar bar method. Three-dimensional structural analysis using X-ray computed tomography (CT) characterized macropore structure and fiber orientation distribution. Hydration processes were monitored using isothermal calorimetry, while microstructural features were examined through scanning electron microscopy (SEM) and nanoindentation testing.

Results and Discussion

The workability and wet packing density of fresh UHPC exhibited an initial increase followed by a decrease with increasing VRA replacement ratios, achieving optimal values at 50% replacement. Flow spread increased from 122 mm to 133.5 mm before declining to 128.5 mm, while wet packing density improved from 0.803 to 0.819 before decreasing to 0.808. VRP substitution demonstrated a monotonic increasing trend in flowability, with wet packing density peaking at 10% replacement. This phenomenon was attributed to the friction network regulation mechanism of "angular-rounded" particle interactions and particle gradation optimization by volcanic rock powder.

Mechanical performance analysis revealed that 75% VRA replacement maximized flexural strength across all curing ages, while 20% VRP substitution yielded optimal 28 d compressive strength. X-ray CT analysis demonstrated that 50% VRA replacement minimized total porosity, with large pores (10⁷-10⁸ μm³) systematically decreasing as VRA content increased. The angular morphology of volcanic rock aggregates promoted preferential horizontal alignment of steel fibers, with significant clustering in low-angle regions (0°-30°), thereby substantially enhancing UHPC flexural performance. VRP optimized pore distribution structure through pozzolanic reactions filling microscopic pores at appropriate replacement levels, achieving a dynamic balance between secondary hydration benefits and cement dilution effects. Nanoindentation results confirmed that VRA-matrix interfacial transition zones exhibited superior mechanical properties compared to those of standard sand interfaces, with elastic modulus improvements of approximately 49.7%.

Calorimetric analysis revealed that VRA incorporation increased 3 d cumulative heat release compared to standard sand groups, attributed to surface active substances and enhanced interfacial contact promoting early cement hydration. VRP exhibited delayed hydration kinetics with peak heat release occurring at later ages, with 20% replacement achieving the highest 3 d cumulative heat release due to optimized pozzolanic reaction contributions, while higher dosages (30%) inhibited hydration processes due to lower reactivity of VRP and dilution effect.

Conclusions

This study established that volcanic rock materials effectively enhance UHPC performance through physicochemical synergistic mechanisms, with optimal performance achieved at 50%-75% VRA replacement and 20% VRP substitution. The angular morphology of volcanic rock aggregates improved fiber orientation distribution and mechanical interlocking with the cement matrix, while volcanic rock powder optimized particle packing efficiency and promoted secondary hydration reactions. The enhancement mechanisms originate from three synergistic factors: superior intrinsic mechanical properties comparable to standard sand, angular particle morphology creating three-dimensional mechanical interlocking structures that optimize packing efficiency, and surface active components promoting pozzolanic reactions that densify interfacial microstructure. These findings provide experimental evidence for extending particle packing theory beyond conventional spherical particle assumptions, establishing critical relationships between “morphological characteristics-packing efficiency-interface performance” and macroscopic UHPC properties for complex-shaped aggregates design.

Key words

volcanic rock / ultra-high performance concrete / particle morphology / pozzolanic reaction

引用本文

刘康宁, 范定强, 尹天一, 陆建鑫, 余睿, 潘智生. 火山岩材料在超高性能混凝土中的理化协同增效机理. 硅酸盐学报, 2026 , 54 (10) : 3638 -3654 . DOI: 10.14062/j.issn.0454-5648.20250629

Kangning LIU, Dingqiang FAN, Tianyi YIN, Jianxin LU, Rui YU, Chisun POON. Physicochemical Synergistic Mechanisms of Volcanic Rock Materials in Ultra-High Performance Concrete[J]. Journal of the Chinese Ceramic Society, 2026 , 54 (10) : 3638 -3654 . DOI: 10.14062/j.issn.0454-5648.20250629

基金

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国家自然科学基金(52308275)
香港建造业议会研究及技术发展基金(K-ZB7X)
香港低碳绿色科研基金(K-ZB5B)
硅酸盐科学与先进建材全国重点实验室开放基金(SYSJJ2025-09)

参考文献

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2026年第54卷第10期

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文章信息

doi: 10.14062/j.issn.0454-5648.20250629

接收时间：2025-08-27
首发时间：2026-10-22
出版时间：2026-05-06

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出版历史

收稿日期：2025-08-27
修回日期：2025-10-26

基金

国家自然科学基金(52308275)

香港建造业议会研究及技术发展基金(K-ZB7X)

香港低碳绿色科研基金(K-ZB5B)

硅酸盐科学与先进建材全国重点实验室开放基金(SYSJJ2025-09)

作者信息

^1.武汉理工大学，硅酸盐科学与先进建材全国重点实验室，中国　武汉　430070

^2.香港理工大学土木与环境工程系，中国　香港　999077

^3.哈尔滨工业大学（深圳）智能土木与海洋工程学院，中国　广东　深圳　518000

通讯作者:

陆建鑫（1988-），男，博士，教授。

余睿（1986-），男，博士，研究员。

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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