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学者姓名：梁咏宁
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Abstract ：
为了研究激发剂种类对脱硫石膏-碱矿渣隧道防火涂料(DGAC)性能的影响机理,固定碱掺量为4％,碱矿渣水泥掺量为20％,探究激发剂种类,即CaO+Na2CO3、Ca(OH)2+Na2CO3、CaO+Na2SO4、Ca(OH)2+Na2SO4、NaOH,其所对应的 DGAC 分别为 CNC、CHNC、CNS、CHNS、NH,对 DGAC 干燥时间、凝结时间、干密度、抗压强度、耐水性及防火性的影响,并结合扫描电子显微镜(SEM)和X射线衍射(XRD)揭示其机理.结果表明:在干燥和凝结时间方面,CNS＞CHNS＞CNC＞CHNC＞NH;在抗压强度和耐水性方面,CHNC＞CNC＞NH＞CNS＞CHNS,CHNC生成的絮状水化硅酸钙(C-S-H)凝胶较多,其与针状钙矾石交叉紧密,具有最好的耐水性和抗压强度;在防火性方面,CHNS＞CNS＞NH＞CHNC＞CNC,CHNS和CNS中的激发剂碱性较低,其生成的C-S-H凝胶数量较少,且钙矾石的形态较粗,水化产物整体结构疏松,因此其抗压强度较低,但防火性较好.
Keyword ：
激发剂 激发剂 耐水性 耐水性 脱硫石膏-碱矿渣胶凝材料 脱硫石膏-碱矿渣胶凝材料 防火性 防火性 隧道防火涂料 隧道防火涂料
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| GB/T 7714 | 陈宗燕 , 周阳升 , 赵晓雯 et al. 脱硫石膏-碱矿渣隧道防火涂料性能及机理研究 [J]. | 涂料工业 , 2025 , 55 (2) : 7-13 . |
| MLA | 陈宗燕 et al. "脱硫石膏-碱矿渣隧道防火涂料性能及机理研究" . | 涂料工业 55 . 2 (2025) : 7-13 . |
| APA | 陈宗燕 , 周阳升 , 赵晓雯 , 季韬 , 梁咏宁 . 脱硫石膏-碱矿渣隧道防火涂料性能及机理研究 . | 涂料工业 , 2025 , 55 (2) , 7-13 . |
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The poor water resistance has long limited the widespread application of magnesium phosphate cement (MPC). This study utilized the high-alkaline of the MgO-SiO2-K2HPO4 system to activate slag and incorporated prewater-saturated pottery sand to prepare a water-resistant magnesium-based cement (SP-MSPC). The research primarily examined the effect of pottery sand on the water resistance and microstructure of SP-MSPC with different slag substitution rates. The results indicated that an increase in pottery sand content prolonged the setting time and reduced the fluidity of the paste. The incorporation of higher amounts of pottery sand decreased the mechanical properties of the matrix, but the addition of pottery sand effectively promoted paste hydration, particularly slag hydration, significantly enhancing the water resistance of the matrix. The water resistance coefficient of the S20-P6 matrix at 56 days was 72.42 %, a 61.86 % increase compared to the control group S0P0. This can be attributed to the internal curing effect of the pottery sand, which promotes paste hydration and the continuous formation of K-struvite crystals and the water-resistant M-S-H and C-(A)-S-H gels. The crystal and gel phases were bonded to each other and work synergistically with the dense filling effect of ultrafine slag particles, effectively filling the matrix pores and microcracks, blocking moisture transport channels, slowing the penetration of external moisture, and reducing the dissolution of K-struvite crystals and other hydration products aqueous environments. The incorporation of pottery sand promoted slag hydration enhanced the average polymerization degree of the C-(A)-S-H gel, and reduced the volume of macropores within the matrix.
Keyword ：
MgO-SiO 2-K 2 HPO 4 system MgO-SiO 2-K 2 HPO 4 system Microstructure Microstructure Pre-water-saturated pottery sand Pre-water-saturated pottery sand Slag Slag Water resistance Water resistance
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| GB/T 7714 | Yao, Pengpeng , Lin, Xujian , Wu, Yuzhong et al. Understanding the effect of pre-water-saturated pottery sand on the microstructure and water resistance of the slag-blended MgO-SiO2-K2HPO4 system [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 473 . |
| MLA | Yao, Pengpeng et al. "Understanding the effect of pre-water-saturated pottery sand on the microstructure and water resistance of the slag-blended MgO-SiO2-K2HPO4 system" . | CONSTRUCTION AND BUILDING MATERIALS 473 (2025) . |
| APA | Yao, Pengpeng , Lin, Xujian , Wu, Yuzhong , Ji, Tao , Liang, Yongning , Zhang, Hongru . Understanding the effect of pre-water-saturated pottery sand on the microstructure and water resistance of the slag-blended MgO-SiO2-K2HPO4 system . | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 473 . |
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This study aims to develop fire resistive coatings based on alkali-activated slag cement (AASC) and comprehensively investigate the effects of various alkali activators on the passive fireproof performance of steel structures. The bulk density, mechanical strength, fireproof performance, cracking resistance, mineral phase assemblage, microstructure, and pore structure of AASC with various activators were systemically carried out. The results reveal that the bulk density, bonding strength, and fireproof performance of AASC fire-resistive coatings follow the specifications of Chinese standards. The AASC fire-resistive coatings demonstrate exceptional fireproof performance, and the maximum temperatures are about 50 % lower than the 538 degrees C specified by Chinese national standards for steel structure coatings. Among the four activators studied, a composite activator of CaO and Na2CO3 could balance the physical performance needed by a fire resistive coating. With comprehensive consideration of splitting tensile strength, the quantity of C (N)-A-S-H gel, nominal crystalline to gel ratio, and capillary pore volume, AASC coating with a composite activator of CaO and Na2CO3 demonstrates improved cracking resistance and excellent bond strength, via increasing nominal crystalline to gel ratio and the amount of C(N)-A-S-H gel. Results pointed out that the optimized activator is able to outperform alternative commercial cement-based binders for fire resistance, thus representing a promising technology.
Keyword ：
Alkali-activated slag cement Alkali-activated slag cement Alkali activators Alkali activators Cracking resistance Cracking resistance Fireproof performance Fireproof performance Mechanical properties Mechanical properties
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| GB/T 7714 | Sun, Huaqiang , Zhang, Zhiliang , Liang, Yongning et al. Preparation and fireproof performance of alkali activated cement based fire resistive coatings with different alkali activators for steel structures [J]. | CASE STUDIES IN CONSTRUCTION MATERIALS , 2025 , 22 . |
| MLA | Sun, Huaqiang et al. "Preparation and fireproof performance of alkali activated cement based fire resistive coatings with different alkali activators for steel structures" . | CASE STUDIES IN CONSTRUCTION MATERIALS 22 (2025) . |
| APA | Sun, Huaqiang , Zhang, Zhiliang , Liang, Yongning , Ji, Tao . Preparation and fireproof performance of alkali activated cement based fire resistive coatings with different alkali activators for steel structures . | CASE STUDIES IN CONSTRUCTION MATERIALS , 2025 , 22 . |
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High-performance concrete compressive and tensile strengths are essential in terms of the assurance of structural performance and reliability. The research will describe the effective estimation of such properties through an artificial intelligence-based approach to overcome several limitations of experimental testing. For this purpose, a Light Gradient Boosting model has been developed and enhanced using four meta-heuristic optimization algorithms: Dandelion Optimization, Runge-Kutta Optimization, Seagull Optimization Algorithm, and Black Widow Optimization Algorithm. The LGRDSB was an ensemble model that combined the strengths of all four optimizers. Among them, the RUN optimizer with the LGRK model emerged as the best, giving R-squared values of 0.9928 and 0.9914 for CS and TS predictions, respectively. Thus, the LGRDSB model ensemble emerged as most robust and reliable to handle diverse datasets, securing R-squared values greater than 98% and less than 1% error rates. These results highlight the performance of the proposed models in predicting HPC properties and provide a realistic approach toward integrating AI techniques into performance evaluation for HPC.
Keyword ：
artificial intelligence artificial intelligence ensemble learning ensemble learning high-performance concrete strengths high-performance concrete strengths hybrid machine learning hybrid machine learning light gradient boosting light gradient boosting
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| GB/T 7714 | Zhao, Shaoka , Li, Hongwei , Li, Jianfeng et al. Implementation of meta-ensembled algorithms via light gradient boosting model for predicting high-performance concrete main strength features [J]. | COMPUTERS AND CONCRETE , 2025 , 36 (2) : 227-248 . |
| MLA | Zhao, Shaoka et al. "Implementation of meta-ensembled algorithms via light gradient boosting model for predicting high-performance concrete main strength features" . | COMPUTERS AND CONCRETE 36 . 2 (2025) : 227-248 . |
| APA | Zhao, Shaoka , Li, Hongwei , Li, Jianfeng , Li, Linbin , Liu, Yongjun , Wu, Shuanglan et al. Implementation of meta-ensembled algorithms via light gradient boosting model for predicting high-performance concrete main strength features . | COMPUTERS AND CONCRETE , 2025 , 36 (2) , 227-248 . |
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The effects of different curing regimes on the performance of ultra-high performance concrete containing metakaolin and magnesium oxide (MM-UHPC) were investigated. Four curing regimes were included, namely standard curing (SC), hot water curing (HC), steam curing (MC), and autoclave curing (AC). Additionally, the hydration products, pore structure, microhardness, interfacial transition zone (ITZ) properties, and single fiber pullout properties of MM-UHPC were characterized to reveal the influencing mechanism. The results showed that compared to SC, the thermal curing (HC, MC, and AC) facilitated the incorporation of Al elements from metakaolin into hydrated calcium silicate (C-S-H), increasing the average chain length of C-S-H and promoting the crosslinking of long straight silicate chains. The thermal curing also promoted the secondary hydration reaction of calcium hydroxide [Ca(OH)(2)] enriched in the ITZ, improving the ITZ properties, increasing the microhardness value of the ITZ, and enhancing the friction force between steel fibers and matrix. Furthermore, the thermal curing reduced the porosity of matrix and refined the pore structure of matrix. These factors resulted in an increase in 120 days flexural strength of MM-UHPC by 14.9 %, 10.5 %, and 20.9 % for HC, MC, and AC, respectively, compared to SC. Similarly, the compressive strength increased by 12.0 %, 11.4 %, and 24.9 %, respectively. The 120 days flexural and compressive strength of MM-UHPC are in the following order: AC > HC > MC > SC.
Keyword ：
Curing regime Curing regime Microhardness Microhardness Microstructure Microstructure Single fiber pullout Single fiber pullout Ultra-high performance concrete Ultra-high performance concrete
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| GB/T 7714 | Zhang, Binbin , Zhou, Yanyan , Gong, Haoyang et al. Effect of curing regime on ultra-high performance concrete containing metakaolin and magnesium oxide [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 490 . |
| MLA | Zhang, Binbin et al. "Effect of curing regime on ultra-high performance concrete containing metakaolin and magnesium oxide" . | CONSTRUCTION AND BUILDING MATERIALS 490 (2025) . |
| APA | Zhang, Binbin , Zhou, Yanyan , Gong, Haoyang , Liang, Yongning , Liu, Di , Wang, Yazhou et al. Effect of curing regime on ultra-high performance concrete containing metakaolin and magnesium oxide . | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 490 . |
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Durability of alkali-activated slag cement (AAS) against combined freeze-thaw and sulfate attack was studied in this paper. AAS which is activated by CaO-Na2CO3 activators (CNS) was used to prepare mortar with the strength of 35 MPa (CNS35) and 50 MPa (CNS50) respectively and ordinary Portland cement was used to prepare mortar with the strength of 35 MPa (PC35) as a comparison. The rapid freeze-thaw test was performed to investigate the extent of deterioration in CNS and PC mortar exposed to freeze-thaw cycles in various media, including clear water and sodium sulfate solution. The relative dynamic modulus, microhardness, pore structure evolution, microstructure, and hydration products were analyzed using experimental and microscopic tests. The results show that the durability of CNS mortar under water freeze-thaw and sulfate freeze-thaw cycles is higher than that of PC mortar. The CNS hydration product is a low Ca/Si ratio C-A-S-H gel, hydrotalcite, hydrotalcite-like, calcium carbonate, and no calcium hydroxide. While the PC mortar hydration product is a high Ca/Si ratio C-S-H(II) gel and calcium hydroxide. The hydration product of CNS mortar was denser than that of PC mortar and had no obvious interfacial transition zone. Furthermore, sodium sulfate does not destroy the hydration product structure of CNS mortar, in contrast, it has a certain excitation effect. However, sodium sulfate reacts with the hydration product of PC mortar forming ettringite to destroy its internal structure. © 2025 Elsevier Ltd
Keyword ：
Calcium carbonate Calcium carbonate Calcium oxide Calcium oxide Deterioration Deterioration Durability Durability Freezing Freezing Portland cement Portland cement Slag cement Slag cement Sodium Carbonate Sodium Carbonate Sodium sulfate Sodium sulfate Strength of materials Strength of materials Sulfate minerals Sulfate minerals Thawing Thawing
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| GB/T 7714 | Wu, Sinan , Liang, Yongning , Zhang, Shan et al. Damage mechanics of CaO-Na2CO3-Slag cement mortar under freeze-thaw in water and sulfate solution [J]. | Journal of Building Engineering , 2025 , 111 . |
| MLA | Wu, Sinan et al. "Damage mechanics of CaO-Na2CO3-Slag cement mortar under freeze-thaw in water and sulfate solution" . | Journal of Building Engineering 111 (2025) . |
| APA | Wu, Sinan , Liang, Yongning , Zhang, Shan , Sun, Huaqiang , Ji, Tao , Li, Jianfeng . Damage mechanics of CaO-Na2CO3-Slag cement mortar under freeze-thaw in water and sulfate solution . | Journal of Building Engineering , 2025 , 111 . |
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The accumulation of municipal solid waste incineration bottom ash (MSWI-BA) not only occupies land, but also leads to severe environmental pollution. In order to improve the utilization of MSWI-BA and reduce carbon emissions, the effect of alkali content on alkali-activated slag (AAS) paste containing 12% MSWI-BA under high-temperature exposure was studied. The alkali contents, i.e., the mass of Na2O in the water glass, were 2%-6% of the total mass of the precursors. The weight loss, thermal shrinkage, and strength of AAS were investigated. The results show that at the same heat treatment temperature, as the alkali content increases, the flexural and compressive strengths of AAS increase and then decrease, reaching the maximum at AAS with 4% alkali content (NS4). As the alkali content increases from 2% to 4%, the higher OH- concentration reduces the Ca dissolution of portlandite in MSWI-BA, resulting in a lower increase in Ca concentration than Si concentration. This leads to a decrease in Ca/Si and an increase in Al/Si of C A S H, which is beneficial for improving the structural stability of C S H after high temperature. When the alkaline content increases from 4% to 6%, excessive matrix shrinkage leads to an increase in microcracks. It was found that NS4 has the best high-temperature resistance and has good application prospects in engineering.
Keyword ：
Alkali-activated slag Alkali-activated slag Alkali content Alkali content High-temperature exposure High-temperature exposure Municipal solid waste incineration bottom ash (MSWI-BA) bottom ash Municipal solid waste incineration bottom ash (MSWI-BA) bottom ash
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| GB/T 7714 | Zhang, Binbin , Ma, Yu , Liang, Yongning et al. Effect of Alkali Content on the High-Temperature Behavior of Alkali-Activated Slag Paste Containing MSWI Bottom Ash [J]. | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2024 , 36 (6) . |
| MLA | Zhang, Binbin et al. "Effect of Alkali Content on the High-Temperature Behavior of Alkali-Activated Slag Paste Containing MSWI Bottom Ash" . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING 36 . 6 (2024) . |
| APA | Zhang, Binbin , Ma, Yu , Liang, Yongning , Wang, Yao , Ji, Tao . Effect of Alkali Content on the High-Temperature Behavior of Alkali-Activated Slag Paste Containing MSWI Bottom Ash . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2024 , 36 (6) . |
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环境中微生物的化学和代谢活动会造成混凝土结构的劣化。在生物硫酸(T.f细菌,pH=1.1)下,本文探究水泥类型和阻锈剂对人工鱼礁混凝土(ARC)钢筋处孔隙液pH值、腐蚀电位、腐蚀电流及锈蚀率的影响,结合孔结构、SEM-EDS、XRD和IR揭示其机理。结果表明:与采用普通硅酸盐水泥的ARC相比,使用硫铝酸盐水泥(SAC)的ARC,其孔隙充满更多的AFt,孔结构更加致密,经生物硫酸腐蚀后,完全疏松区和部分疏松区的石膏衍射峰强度较低,这对未完全溶解水化产物的撕拉作用较小,且在部分疏松区仍存在Ca-O键,抗生物硫酸腐蚀能力更强;采用SAC和阻锈剂,ARC钢筋处孔隙液pH值减小速率最低,且腐蚀84 d后,腐蚀电位最高,腐蚀电流和锈蚀率最低,具有最好的耐生物硫酸腐蚀性能。
Keyword ：
人工鱼礁混凝土 人工鱼礁混凝土 生物硫酸 生物硫酸 硫铝酸盐水泥 硫铝酸盐水泥 钢筋锈蚀 钢筋锈蚀 阻锈剂 阻锈剂
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| GB/T 7714 | 周阳升 , 陈彩艺 , 梁咏宁 et al. 人工鱼礁混凝土抗生物硫酸腐蚀机理 [C] //第十届海洋材料与腐蚀防护大会暨第四届钢筋混凝土耐久性与设施服役安全大会 . 2024 . |
| MLA | 周阳升 et al. "人工鱼礁混凝土抗生物硫酸腐蚀机理" 第十届海洋材料与腐蚀防护大会暨第四届钢筋混凝土耐久性与设施服役安全大会 . (2024) . |
| APA | 周阳升 , 陈彩艺 , 梁咏宁 , 季韬 . 人工鱼礁混凝土抗生物硫酸腐蚀机理 第十届海洋材料与腐蚀防护大会暨第四届钢筋混凝土耐久性与设施服役安全大会 . (2024) . |
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利用海砂替代河砂制备海砂硫铝酸盐混凝土(SACS),以海砂普通硅酸盐混凝土(OPCS)为对照,研究SACS的氯离子固化性能,并采用硬化砂浆阳极极化法及钢筋失重率法研究不同阻锈剂(单氟磷酸钠、亚硝酸锂和三乙醇胺)及其掺量(0%、0.5%、1%、1.5%、2%,即阻锈剂与硫铝酸盐水泥的质量比)对海砂硫铝酸盐水泥砂浆(SS)中钢筋极化电位和钢筋锈蚀的影响.结果表明:标养28 d后SACS氯离子固化率较OPCS高约18%,SS中钢筋极化电位略高于海砂普通硅酸盐水泥砂浆(OPCS);在SS中掺入阻锈剂能使钢筋极化电位正移,失重率降低;掺入 1.5%三乙醇胺阻锈效果最佳,钢筋极化电位变化满足规范要求,钢筋失重率仅为 0.0142%,与未掺入阻锈剂相比降低约91%.
Keyword ：
氯离子固化 氯离子固化 海砂 海砂 硫铝酸盐混凝土 硫铝酸盐混凝土 钢筋 钢筋 阻锈剂 阻锈剂
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| GB/T 7714 | 王坚峰 , 梁咏宁 , 杨小彬 et al. 阻锈剂对海砂硫铝酸盐混凝土中钢筋锈蚀的影响 [J]. | 河北工程大学学报（自然科学版） , 2024 , 41 (5) : 1-7 . |
| MLA | 王坚峰 et al. "阻锈剂对海砂硫铝酸盐混凝土中钢筋锈蚀的影响" . | 河北工程大学学报（自然科学版） 41 . 5 (2024) : 1-7 . |
| APA | 王坚峰 , 梁咏宁 , 杨小彬 , 叶财发 , 司青山 , 季韬 . 阻锈剂对海砂硫铝酸盐混凝土中钢筋锈蚀的影响 . | 河北工程大学学报（自然科学版） , 2024 , 41 (5) , 1-7 . |
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The influence of additive MgO and its content on both the compressive strength and carbonation depth of alkali-activated slag concrete (AASC) was investigated under an accelerated carbonation environment. Furthermore, the modification mechanism of MgO on the carbonation resistance of AASC was explored by multiple analytical techniques. Results showed that the incorporation of MgO effectively enhanced the post-carbonation compressive strength and diminished the carbonation depth of concrete. As the MgO content increased, there was a gradual reduction in carbonation depth. The incorporation of MgO promotes the hydration of slag, altering the Al environment, and promoting the formation of C-S-H and Mg-Al hydrotalcite phases. Moreover, the addition of MgO resulted in the emergence of magnesium carbonate and calcium magnesium carbonate in the carbonation products, which filled the pores and prevented the further diffusion of CO2 into the interior. In addition, the improvement effects are more pronounced in the water glass system compared to the NaOH system.
Keyword ：
activator activator Alkali-activated slag concrete Alkali-activated slag concrete carbonation carbonation MgO MgO microstructure microstructure
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| GB/T 7714 | Yongning Liang , Xun Nian , Hao Zheng et al. The influence of additive MgO and its content on the carbonation resistance of alkali-activated slag concrete with different activators [J]. | Journal of Sustainable Cement-Based Materials , 2024 , 13 (4) : 546-557 . |
| MLA | Yongning Liang et al. "The influence of additive MgO and its content on the carbonation resistance of alkali-activated slag concrete with different activators" . | Journal of Sustainable Cement-Based Materials 13 . 4 (2024) : 546-557 . |
| APA | Yongning Liang , Xun Nian , Hao Zheng , Jianwei Zhan , Tao Ji , Xiaoyan Zheng . The influence of additive MgO and its content on the carbonation resistance of alkali-activated slag concrete with different activators . | Journal of Sustainable Cement-Based Materials , 2024 , 13 (4) , 546-557 . |
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