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Fluid Dynamics & Materials Processing 2024年第9期20卷 2077-2090页

作者： Jin Yang Senye Liu Xingyang He Ying Su Jingyi Zeng bohumír strnadel School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan430068China Building Waterproof Engineering and Technology research Center of Hubei Province Hubei University of TechnologyWuhan430068China Center of Advanced Innovation Technologies VŠB-Technical University of Ostrava70833 Ostrava-PorubaCzech Republic

Phosphate tailings are usually used as backfill material in order to recycle tailings *** study considers the effect of the mix proportions of clinker-free binders on the fluidity,compressive strength and other key performances of cementitious backfill materials based on phosphate *** particular,three solid wastes,phosphogypsum(PG),semi-aqueous phosphogypsum(HPG)and calcium carbide slag(CS),were selected to activate wet ground granulated blast furnace slag(WGGBS)and three different phosphate tailings backfill materials were ***,rheology,settling ratio,compressive strength,water resistance and ion leaching behavior of backfill materials were *** to the results,when either PG or HPG is used as the sole activator,the fluidity properties of the materials are *** tailings backfill material activated with PG present the largest fluidity and the lowest yield ***,the backfill material’s compressive strength is considerably increased to 2.9 MPa at 28 days after WGGBS activation using a mix of HPG and CS,all with a settling ratio of only 1.15 ***,all the three ratios of binder have obvious solidification effects on heavy metal ions Cu and Zn,and P in phosphate tailings.

关键词： Fluidity rheology compressive strength phosphate tailing backfill material

Physico-chemical Characteristics of Wet-milled Ultrafine-granulated Phosphorus Slag as a Supplementary Cementitious Material

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Journal of Wuhan University of Technology(Materials Science) 2018年第3期33卷 625-633页

作者：贺行洋 YE Qing YANG Jin DAI Fei SU Ying WANG Yingbin bohumír strnadel Building Waterproof Engineering and Technology research Center of Hubei Province Hubei University of Technology National Enterprise Technology Center China Construction Ready Mixed Concrete Co. Ltd. Center of Advanced and Innovation Technologies Faculty of Metallurgy and Materials Engineering V?B-Technical University of Ostrava

The phosphorus slag（PS） can be used as a supplementary cementitious material due to its potential hydrating activity. However, its usage has been limited by its adverse effects, including prolonged setting and lowered early-stage strength. In this study, we achieved ultrafine granulation of PS using wetmilling（reducing d50 to as low as 2.02 μm） in order to increase its activity, and examined the physico-chemical properties of the resulting materials, including particle-size distribution, slurry pH, zeta potential, and activity index, as well as how their replacement level and granularity affect the setting time and mechanical performance of PS-cement mixture systems. The results suggested that as the granularity increases, there are significant boosts in the uniformity of particle sizes, slurry pH, and activity index, and the effects on cement paste, including setting times, and early-and late-stage strengths, are significantly mitigated. When d（50）=2.02 μm, the slurry becomes strongly alkaline（pH=12.16） compared to the initial d（50）=20.75 μm（pH=9.49）, and the activity is increased by 73%; when used at 40% replacement, the PS-cement mixture system can reach a 28 d compressive strength of 93.2 MPa, 36% higher than that of the pure cement control group.

关键词： wet-milling phosphorus slag ultrafine granulation setting time compressive strength

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弱碱激发超细粉煤灰水化产物结构分析

材料导报 2019年第14期33卷 2376-2380页

作者：苏英邱慧琼贺行洋杨进王迎斌曾三海 bohumír strnadel 湖北工业大学土木建筑与环境学院武汉430068 湖北省建筑防水工程技术研究中心武汉430068 奥斯特拉法技术大学冶金与材料工程学院先进科学研究中心奥斯特拉发70833捷克

机械力化学法能够提升超细粉煤灰的活性,使其在弱碱下具有较好的激发潜力。本实验研究了弱碱电石渣对超细化粉煤灰(D50=2.5μm)激发产物的影响规律,并与氢氧化钠激发进行比较。通过X射线衍射(XrD)仪、透射电子显微镜(TEM)、电感耦合等... 详细信息

机械力化学法能够提升超细粉煤灰的活性,使其在弱碱下具有较好的激发潜力。本实验研究了弱碱电石渣对超细化粉煤灰(D50=2.5μm)激发产物的影响规律,并与氢氧化钠激发进行比较。通过X射线衍射(XrD)仪、透射电子显微镜(TEM)、电感耦合等离子体发射光谱(ICP)仪和固体核磁共振(NMr)仪分别分析了不同碱性物质激发下粉煤灰水化产物的物相组成、体系中离子的溶出特性以及粉煤灰中玻璃相的聚合度变化情况。结果表明,超细粉煤灰在湿法研磨过程(6h)中已经发生了早期水化反应,表现为明显的钙矾石和Ca2Al(OH)7·3H2O产物峰。XrD、TEM和ICP测试结果显示超细粉煤灰在电石渣激发下水化产物种类增多,结构致密;在NaOH激发下超细粉煤灰产生了沸石类产物,钙矾石类水化产物较少。NMr测试结果显示,粉煤灰中硅氧多面体网络结构由高聚态向低聚态转变,结构中较多的活性成分被激发并参与了早期的水化反应。

关键词：超细粉煤灰弱碱激发电石渣氢氧化钠水化产物

大掺量矿渣-水泥复合胶凝材料体系的性能研究

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混凝土 2019年第9期 83-87页

作者：贺行洋张晨苏英王迎斌杨进陈威 bohumír strnadel 湖北工业大学土木建筑与环境学院湖北武汉430068 奥斯特拉法技术大学先进科学研究中心捷克奥斯特拉发70833

研究了不同细度矿渣对水泥基复合胶凝材料性能的影响,分析了复合胶凝材料体系的力学性能,并采用扫描电子显微镜(SEM)、压汞法(MIP)、热分析(TG-DTG)测试了矿渣-水泥复合胶凝材料体系的微观结构及水化产物,结果显示:矿渣的掺量对复合胶... 详细信息

研究了不同细度矿渣对水泥基复合胶凝材料性能的影响,分析了复合胶凝材料体系的力学性能,并采用扫描电子显微镜(SEM)、压汞法(MIP)、热分析(TG-DTG)测试了矿渣-水泥复合胶凝材料体系的微观结构及水化产物,结果显示:矿渣的掺量对复合胶凝材料体系性能具有较大影响,具体表现为50%~70%矿渣掺量范围内,随掺量的增大,硬化浆体孔渗流程度增大,力学性能降低,且该趋势与细度无关;矿渣细度降低,可细化硬化浆体孔结构,降低孔的渗流程度,水化产物显著增多,微观结构更加密实,从而对力学性能起到正效应。

关键词：矿渣复合胶凝材料孔结构微观结构

磷石膏激发磷渣-矿渣-水泥复合胶凝材料体系的性能研究

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混凝土 2020年第1期 119-122,130页

作者：贺行洋王庭苇苏英郑正旗王迎斌杨进 bohumír strnadel 湖北工业大学土木建筑与环境学院湖北武汉430068 湖北工业大学湖北省建筑防水工程技术研究中心湖北武汉430068 奥斯特拉法技术大学先进科学研究中心捷克奥斯特拉发70833

实现高固废利用率及探明磷石膏激发的效果,主要研究了不同掺量磷石膏对磷渣-矿渣-水泥复合胶凝材料体系抗压强度的影响规律,并采用XrD、TG和SEM分析了体系的水化产物。结果表明:适量的磷石膏对磷渣-矿渣-水泥复合胶凝材料体系3 d的水化... 详细信息

实现高固废利用率及探明磷石膏激发的效果,主要研究了不同掺量磷石膏对磷渣-矿渣-水泥复合胶凝材料体系抗压强度的影响规律,并采用XrD、TG和SEM分析了体系的水化产物。结果表明:适量的磷石膏对磷渣-矿渣-水泥复合胶凝材料体系3 d的水化具有促进作用,当磷石膏掺量达到5%时,其含有的磷、氟等杂质会延缓胶凝材料的水化进程,导致3 d强度降低;磷石膏的掺入对体系7、28、90 d的强度都有一定激发效果,并且随着磷石膏的掺量增加,其主要水化产物C-S-H和钙矾石生成量逐渐增多,当磷石膏的掺量为5%时,水化至28 d后,体系中仍含有石膏,但当磷石膏掺量超过8%时,硬化浆体中残余大量石膏,反而会降低体系的机械强度。

关键词：磷石膏磷渣力学性能微观结构

The Effect of Wet-grinding on the Properties of Glass Powder and Its Application in Cement Based Materials

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Journal of Wuhan University of Technology(Materials Science) 2023年第6期38卷 1372-1381页

作者： WANG Yingbin YANG Jie SU Ying HE Xingyang strnadel bohumir School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan 430068China Center for Advanced and Innovative Technologies VSB-Technical University of OstravaOstrava-Poruba 70833Czech Republic

To improve the pozzolanic reactivity,waste glass(WG)needs to be micronized to fine particles so as to expedite the leaching of active *** key feature of this work is to examine the effect of wet-grinded WG on the mechanical and structural properties of cement based *** experimental results show that wet-grinding can improve the ions leaching behavior of WGP and decrease the stability of silicon oxide *** pozzolanic reactivity of WGP was dramatically enhanced after wet-grinding,as high as 144.1%at 1 d and 110.9%at 28 d when the mean grain size of WGP reached 0.90μ*** ground WGP can promote the transformation of capillary pores to gel pores to improve the compactness of microstructure regardless of the reaction time.

关键词： supplementary cementitious materials pozzolanic reactivity wet-grinding compressive strength