Article(id=1321944740665344622, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1321944712408314326, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20250622, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1755705600000, receivedDateStr=2025-08-21, revisedDate=1759507200000, revisedDateStr=2025-10-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1793105786720, onlineDateStr=2026-10-27, pubDate=1773936000000, pubDateStr=2026-03-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793105786720, onlineIssueDateStr=2026-10-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793105786720, creator=13701087609, updateTime=1793105786720, updator=13701087609, issue=Issue{id=1321944712408314326, tenantId=1146029695717560320, journalId=1263187385517883426, year='2026', volume='54', issue='3', pageStart='821', pageEnd='1176', issueExtLink='null', onlineDate='null', pubDate='1770652800000', pubDateStr='2026-02-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793105779983, creator='13701087609', updateTime=1793105779983, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=823, endPage=841, ext={EN=ArticleExt(id=1321944741546148463, articleId=1321944740665344622, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Intelligent Design of Ultra-High Toughness Engineered Geopolymer Composites for Multi-Objective Performance, columnId=1321944713276535255, journalTitle=Journal of the Chinese Ceramic Society, columnName=Special Issue on Genes and AI-Based Design of Cement-Based Materials—Research Articles, runingTitle=null, highlight=null, articleAbstract=
Introduction

For the "dual carbon" (i.e., carbon peak and carbon neutrality) goals and global sustainable development strategies, the construction materials sector rapidly transitions from conventional cement-based materials toward low-carbon, environmentally friendly, and high-performance alternatives. Engineered geopolymer composites (EGC) as a new generation of green building materials exhibit superior mechanical properties, thermal stability, and environmental compatibility. However, the performance of EGC is synergistically governed by multiple factors (i.e., alkali activator concentration, liquid-to-solid ratio, aggregate characteristics, and fiber geometry). The intricate, nonlinear interactions among these parameters present significant challenges for precise mix design and performance optimization. Conventional trial-and-error approaches are prohibitively expensive and time-consuming, rendering them fundamentally incapable of effectively exploring the expansive combinatorial space of EGC mix formulations. Furthermore, EGC mix design often requires the simultaneous satisfaction of multiple, potentially conflicting performance targets, such as high compressive strength and high tensile strain capacity. Therefore, this study was to develop an intelligent design framework for EGC integrating performance prediction and multi-objective optimization. This framework directly addressed the limitations of conventional "black-box" and "experience-driven" approaches, enabling the intelligent and precise design of sustainable cementitious materials.

Methods

This study established a closed-loop intelligent design framework for EGC based on machine learning (ML), incorporating "prediction-optimization-feedback". Firstly, a comprehensive EGC database was systematically integrated, comprising 309 sets of experimental data from domestic and international literature. Eleven key mix proportion parameters (i.e., ground granulated blast furnace slag (GGBS), fly ash (FA), silica fume (SF), sand-to-binder ratio (S/B), water-to-binder ratio (W/B), alkali activator modulus (AAM), alkali equivalent (AAD), fiber content (FC), fiber length (FL), fiber length-to-diameter ratio (FLD), and fiber tensile strength (FTS)) were selected as input variables. The 28-d compressive strength, tensile strength, and tensile strain capacity were chosen as target output indicators. Five ML models (i.e., Support Vector Regression (SVR), Gradient Boosting Regression Tree (GBRT), XGBoost, Artificial Neural Network (ANN), and Invertible Neural Network (INN)) were developed to predict the key mechanical properties of EGC from its mix design parameters. Hyperparameter optimization was conducted using grid search and experience-based tuning. The SHapley Additive exPlanations (SHAP) method was employed to quantitatively analyze the influence of each mix parameter on the EGC performance. Finally, the CatBoost model was integrated with the NSGA-III (Non-dominated Sorting Genetic Algorithm III) multi-objective evolutionary algorithm to achieve targeted performance optimization, while automatically searching for optimal balanced solutions under various engineering scenarios.

Results and discussion

Among the five ML models evaluated, the INN model exhibits the maximum predictive accuracy, achieving R2 values of 0.99, 0.98, and 0.99 for compressive strength, tensile strength, and tensile strain, respectively. The results of SHAP-based global sensitivity analysis reveal that increasing GGBS content significantly enhances compressive strength via promoting secondary hydration reactions. The fiber tensile strength (FTS) is the most influential parameter for tensile strength, and the fiber length (FL) critically determines the tensile strain capacity via improving crack-bridging effects. Alkali equivalent (AAD) and alkali activator modulus (AAM) both affect all three performance indices. Three optimization objectives are implemented by the integration of CatBoost and NSGA-III, i.e., 1) simultaneous maximization of all three target performances, 2) targeted optimization focusing on maximum tensile strain, and 3) precise matching of predefined target performance values. From the set of Pareto-optimal solutions, the optimal mix proportion is definitively selected using the TOPSIS ranking method for subsequent experimental validation. The validation results show that the errors between predicted and measured values for the three selected mix proportions are all within 10%, with the minimum error being only 5.3%, confirming the reliability and engineering accuracy of the proposed intelligent design framework.

Conclusions

This work could establish an intelligent design framework for EGC that integrates INN prediction, SHAP interpretability analysis, and CatBoost-NSGA-III multi-objective optimization, achieving a full-process closed-loop design from performance prediction to targeted optimization. The major findings were 1) The INN model demonstrated a superior predictive accuracy for the three key performance indicators of EGC, providing a robust foundation for forward performance prediction; 2) SHAP analysis quantitatively elucidated the mechanisms of key mix parameters on EGC performance, offering a theoretical support for precise material design; and 3) The CatBoost and NSGA-III integration effectively enablec\d both multi-objective collaborative optimization and single-objective precise targeting, validating the feasibility of the reverse design from desired performance targets to optimized mix proportions through experimental verification. This intelligent design strategy effectively resolved the conventional strength-toughness conflict, thereby transcending the limitations of "black-box" and experience-driven methods and propelling a field toward a paradigm of intelligent, data-driven design for next-generation geopolymer composites.

, authors=Menghuan GUO, Yongfei XIE, Yingwu ZHOU, Zhuxin CHENG, Junhao ZHOU, authorsList=Menghuan GUO, Yongfei XIE, Yingwu ZHOU, Zhuxin CHENG, Junhao ZHOU, authorCompany=null, correspAuthors=Yingwu ZHOU, authorNote=

GUO Menghuan (1989-), female, Ph.D., Assistant Professor. E-mail:

, correspAuthorsNote=
ZHOU Yingwu (1978-), male, Ph.D., Professor. E-mail:
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为提升超高韧性地聚物复合材料(EGC)配合比设计效率,降低试错成本,本工作构建了基于机器学习的EGC性能“预测—优化—反馈”闭环智能设计框架。首先,选取矿粉掺量、粉煤灰掺量、碱激发剂模数等11个变量作为输入参数,选定抗压强度、抗拉强度、拉伸应变率为目标性能参数,采用可逆神经网络等5类模型进行正向预测,预测精度高达0.99。其次,引入SHAP可解释性机制,量化解析关键配比参数对EGC性能的影响机制及贡献度。最后,融合CatBoost与NSGA-Ⅲ算法实现多目标性能优化与最优平衡解自动搜索,并通过开展试验研究,验证了所建智能设计框架的准确性与可行性。本工作提出的EGC智能设计框架解决了材料设计中难以避免的高强与高韧权衡问题,突破了传统EGC设计中的“黑匣子操作”与“经验驱动”局限,推动材料设计向智能化、精准化方向发展。

, authors=郭孟环, 谢咏菲, 周英武, 程铸昕, 周俊豪, authorsList=郭孟环, 谢咏菲, 周英武, 程铸昕, 周俊豪, authorCompany=null, correspAuthors=周英武, authorNote=

郭孟环(1989—),女,博士,助理教授。

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周英武(1978—),男,博士,教授。
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基于多目标靶向性能的超高韧性地聚物复合材料智能化设计
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郭孟环 , 谢咏菲 , 周英武 , 程铸昕 , 周俊豪
硅酸盐学报 | 水泥基材料基因与智能设计专题—研究论文 2026,54(3): 823-841
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硅酸盐学报 |水泥基材料基因与智能设计专题—研究论文 2026 , 54 (3) : 823 -841
基于多目标靶向性能的超高韧性地聚物复合材料智能化设计
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郭孟环 , 谢咏菲, 周英武 , 程铸昕, 周俊豪
作者信息
  • 深圳大学,广东省滨海土木工程耐久性重点实验室,广东 深圳 518060
通讯作者:
周英武(1978—),男,博士,教授。
作者简介:

郭孟环(1989—),女,博士,助理教授。

Intelligent Design of Ultra-High Toughness Engineered Geopolymer Composites for Multi-Objective Performance
Menghuan GUO , Yongfei XIE, Yingwu ZHOU , Zhuxin CHENG, Junhao ZHOU
Affiliations
  • Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
  • Corresponding Author:
    ZHOU Yingwu (1978-), male, Ph.D., Professor. E-mail:

    GUO Menghuan (1989-), female, Ph.D., Assistant Professor. E-mail:

出版时间: 2026-03-20 doi: 10.14062/j.issn.0454-5648.20250622
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为提升超高韧性地聚物复合材料(EGC)配合比设计效率,降低试错成本,本工作构建了基于机器学习的EGC性能“预测—优化—反馈”闭环智能设计框架。首先,选取矿粉掺量、粉煤灰掺量、碱激发剂模数等11个变量作为输入参数,选定抗压强度、抗拉强度、拉伸应变率为目标性能参数,采用可逆神经网络等5类模型进行正向预测,预测精度高达0.99。其次,引入SHAP可解释性机制,量化解析关键配比参数对EGC性能的影响机制及贡献度。最后,融合CatBoost与NSGA-Ⅲ算法实现多目标性能优化与最优平衡解自动搜索,并通过开展试验研究,验证了所建智能设计框架的准确性与可行性。本工作提出的EGC智能设计框架解决了材料设计中难以避免的高强与高韧权衡问题,突破了传统EGC设计中的“黑匣子操作”与“经验驱动”局限,推动材料设计向智能化、精准化方向发展。

超高韧性地聚物复合材料  /  机器学习  /  遗传算法  /  性能优化设计
Introduction

For the "dual carbon" (i.e., carbon peak and carbon neutrality) goals and global sustainable development strategies, the construction materials sector rapidly transitions from conventional cement-based materials toward low-carbon, environmentally friendly, and high-performance alternatives. Engineered geopolymer composites (EGC) as a new generation of green building materials exhibit superior mechanical properties, thermal stability, and environmental compatibility. However, the performance of EGC is synergistically governed by multiple factors (i.e., alkali activator concentration, liquid-to-solid ratio, aggregate characteristics, and fiber geometry). The intricate, nonlinear interactions among these parameters present significant challenges for precise mix design and performance optimization. Conventional trial-and-error approaches are prohibitively expensive and time-consuming, rendering them fundamentally incapable of effectively exploring the expansive combinatorial space of EGC mix formulations. Furthermore, EGC mix design often requires the simultaneous satisfaction of multiple, potentially conflicting performance targets, such as high compressive strength and high tensile strain capacity. Therefore, this study was to develop an intelligent design framework for EGC integrating performance prediction and multi-objective optimization. This framework directly addressed the limitations of conventional "black-box" and "experience-driven" approaches, enabling the intelligent and precise design of sustainable cementitious materials.

Methods

This study established a closed-loop intelligent design framework for EGC based on machine learning (ML), incorporating "prediction-optimization-feedback". Firstly, a comprehensive EGC database was systematically integrated, comprising 309 sets of experimental data from domestic and international literature. Eleven key mix proportion parameters (i.e., ground granulated blast furnace slag (GGBS), fly ash (FA), silica fume (SF), sand-to-binder ratio (S/B), water-to-binder ratio (W/B), alkali activator modulus (AAM), alkali equivalent (AAD), fiber content (FC), fiber length (FL), fiber length-to-diameter ratio (FLD), and fiber tensile strength (FTS)) were selected as input variables. The 28-d compressive strength, tensile strength, and tensile strain capacity were chosen as target output indicators. Five ML models (i.e., Support Vector Regression (SVR), Gradient Boosting Regression Tree (GBRT), XGBoost, Artificial Neural Network (ANN), and Invertible Neural Network (INN)) were developed to predict the key mechanical properties of EGC from its mix design parameters. Hyperparameter optimization was conducted using grid search and experience-based tuning. The SHapley Additive exPlanations (SHAP) method was employed to quantitatively analyze the influence of each mix parameter on the EGC performance. Finally, the CatBoost model was integrated with the NSGA-III (Non-dominated Sorting Genetic Algorithm III) multi-objective evolutionary algorithm to achieve targeted performance optimization, while automatically searching for optimal balanced solutions under various engineering scenarios.

Results and discussion

Among the five ML models evaluated, the INN model exhibits the maximum predictive accuracy, achieving R2 values of 0.99, 0.98, and 0.99 for compressive strength, tensile strength, and tensile strain, respectively. The results of SHAP-based global sensitivity analysis reveal that increasing GGBS content significantly enhances compressive strength via promoting secondary hydration reactions. The fiber tensile strength (FTS) is the most influential parameter for tensile strength, and the fiber length (FL) critically determines the tensile strain capacity via improving crack-bridging effects. Alkali equivalent (AAD) and alkali activator modulus (AAM) both affect all three performance indices. Three optimization objectives are implemented by the integration of CatBoost and NSGA-III, i.e., 1) simultaneous maximization of all three target performances, 2) targeted optimization focusing on maximum tensile strain, and 3) precise matching of predefined target performance values. From the set of Pareto-optimal solutions, the optimal mix proportion is definitively selected using the TOPSIS ranking method for subsequent experimental validation. The validation results show that the errors between predicted and measured values for the three selected mix proportions are all within 10%, with the minimum error being only 5.3%, confirming the reliability and engineering accuracy of the proposed intelligent design framework.

Conclusions

This work could establish an intelligent design framework for EGC that integrates INN prediction, SHAP interpretability analysis, and CatBoost-NSGA-III multi-objective optimization, achieving a full-process closed-loop design from performance prediction to targeted optimization. The major findings were 1) The INN model demonstrated a superior predictive accuracy for the three key performance indicators of EGC, providing a robust foundation for forward performance prediction; 2) SHAP analysis quantitatively elucidated the mechanisms of key mix parameters on EGC performance, offering a theoretical support for precise material design; and 3) The CatBoost and NSGA-III integration effectively enablec\d both multi-objective collaborative optimization and single-objective precise targeting, validating the feasibility of the reverse design from desired performance targets to optimized mix proportions through experimental verification. This intelligent design strategy effectively resolved the conventional strength-toughness conflict, thereby transcending the limitations of "black-box" and experience-driven methods and propelling a field toward a paradigm of intelligent, data-driven design for next-generation geopolymer composites.

engineered geopolymer composites  /  machine learning  /  genetic algorithm  /  performance optimization design
郭孟环, 谢咏菲, 周英武, 程铸昕, 周俊豪. 基于多目标靶向性能的超高韧性地聚物复合材料智能化设计. 硅酸盐学报, 2026 , 54 (3) : 823 -841 . DOI: 10.14062/j.issn.0454-5648.20250622
Menghuan GUO, Yongfei XIE, Yingwu ZHOU, Zhuxin CHENG, Junhao ZHOU. Intelligent Design of Ultra-High Toughness Engineered Geopolymer Composites for Multi-Objective Performance[J]. Journal of the Chinese Ceramic Society, 2026 , 54 (3) : 823 -841 . DOI: 10.14062/j.issn.0454-5648.20250622
  • 国家自然科学基金(52178236; 52325804)
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doi: 10.14062/j.issn.0454-5648.20250622
  • 接收时间:2025-08-21
  • 首发时间:2026-10-27
  • 出版时间:2026-03-20
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  • 收稿日期:2025-08-21
  • 修回日期:2025-10-04
基金
国家自然科学基金(52178236; 52325804)
作者信息
    深圳大学,广东省滨海土木工程耐久性重点实验室,广东 深圳 518060

通讯作者:

周英武(1978—),男,博士,教授。
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2种不同金属材料的力学参数
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Number of
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占总种数比例
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属
Genus
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Number of
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占总种数比例
Percentage of total
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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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