Advances in Cement Research最新文献

The regeneration of cement from completely recyclable mortar: effect of raw materials compositions 从完全可回收的砂浆中再生水泥：原材料成分的影响

IF 1.4 4区工程技术

Advances in Cement Research Pub Date : 2024-07-25 DOI: 10.1680/jadcr.23.00129

Yunpeng Liu, Yingying Cui, Xianxin Tong

引用次数: 0

Build-up formation in cement kiln preheater: qualitative and quantitative mineral characterization 水泥窑预热器中堆积物的形成：定性和定量矿物表征

IF 1.4 4区工程技术

Advances in Cement Research Pub Date : 2024-07-24 DOI: 10.1680/jadcr.22.00077

Sahar Belgacem, Haykel Galai

{"title":"Build-up formation in cement kiln preheater: qualitative and quantitative mineral characterization","authors":"Sahar Belgacem, Haykel Galai","doi":"10.1680/jadcr.22.00077","DOIUrl":"https://doi.org/10.1680/jadcr.22.00077","url":null,"abstract":"Extracting more information about reactions and parameters governing the build-up formation process, in the preheater system of the clinker burning line, could be an efficient tool to better attenuate their formation. In order to control their appearance, diagnosis steps of mineralogical analysis application for process optimization (MAA-PO) are suggested. Mineralogical characterization is carried out on three samples taken from different layers of the same build-up. The qualitative and quantitative X-ray diffraction, combined with chemical analysis and IR study, shows that Ternesite is the key mineralogical phase responsible for their growth and consolidation. Its appearance is governed by solid-solid reactions promoted by the available sulfate liquid phases, mainly Ca –langbeinite, as well as C12A7 and C4AF presence. The hot powder calcination degree, SO3 amount, LSF, SR and MA are operational data that have been correlated to the build-up mineralogical analysis. Based on this correlation, it is possible to predict the reactions kinetics involving in each layer formation and to estimate the development time of each. Results showed that MAA-OP is a promised novel approach to optimize clinker production process parameters.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141806070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of biomineralization for enhancement of interfacial properties of rice husk ash blended concrete 应用生物矿化技术提高稻壳灰掺合混凝土的界面性能

IF 1.4 4区工程技术

Advances in Cement Research Pub Date : 2024-07-24 DOI: 10.1680/jadcr.23.00190

Rishabh D. Junwale, M. Latkar

{"title":"Application of biomineralization for enhancement of interfacial properties of rice husk ash blended concrete","authors":"Rishabh D. Junwale, M. Latkar","doi":"10.1680/jadcr.23.00190","DOIUrl":"https://doi.org/10.1680/jadcr.23.00190","url":null,"abstract":"The present study is comprehensive research on application of biocementation for enhancing the properties of concrete having rice husk ash (RHA) as a supplementary cementitious material (SCM). RHA has a large potential to be used as SCM because it has high silica content which eventually forms C-S-H gel by reacting with calcium and water, which increases strength of the cementitious material. However, using high doses of RHA causes a decrease in concrete strength because excessive silica is available to react with Ca(OH)2, forming silica clumps within the concrete matrix, which reduce the bonds within the concrete constituents causing micro cracks. Hence to mitigate this problem, enzyme induced calcium carbonate precipitation (EICCP) process was used to treat the micro cracks, and enhance the mechanical and durability properties of RHA blended concrete. Results showed that EICCP process enhanced the strength of the mix at each replacement level and 10% replacement level exhibited optimum results. With nearly 29% increment in compressive strength. This mix also exhibited enhanced durability as compared to the control specimens. Since concrete constitutes a significant portion of embodied carbon footprint, using greener concrete mixes like “Experimental Mix” has the potential to considerably decrease the carbon footprint of construction.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141809499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of nano-silica@ chitosan phosphate ester on the mechanical properties and water resistance of magnesium oxychloride cement 纳米二氧化硅@壳聚糖磷酸酯对氧氯化镁水泥机械性能和耐水性的影响

IF 1.4 4区工程技术

Advances in Cement Research Pub Date : 2024-07-24 DOI: 10.1680/jadcr.23.00240

Qihao Liu, Qian Jia, Ru-Dong Chen

{"title":"Effect of nano-silica@ chitosan phosphate ester on the mechanical properties and water resistance of magnesium oxychloride cement","authors":"Qihao Liu, Qian Jia, Ru-Dong Chen","doi":"10.1680/jadcr.23.00240","DOIUrl":"https://doi.org/10.1680/jadcr.23.00240","url":null,"abstract":"Nano-silica is used in various composite materials as a kind of filler with good performance. In this study, hydrogen peroxide was used to repair and activate the hydroxyl group on the surface of nano-silica, and chitosan phosphate ester was loaded onto the surface of nano-silica through intermolecular dehydration to prepare nano-silica@ chitosan phosphate ester, and nano-silica@ chitosan phosphate ester was added to the magnesium oxychloride cement for water resistance modification. The results showed that the addition of nano-silica@ chitosan phosphate ester increased the compressive strength of magnesium oxychloride cement at different ages, and the compressive strength of the modified magnesium oxychloride cement at 7 days and 28 days were 116 MPa and 127 MPa, respectively, which increased by 11.5% and 5.8% compared with the unmodified samples. The compressive strength of the modified magnesium oxychloride cement reached 102 MPa after 28 days of water immersion, which was 8.3% higher than that of the phosphoric acid modified sample under the same water immersion duration. At the same time, it was found that nano-silica@ chitosan phosphate ester can increase the fluidity of magnesium oxychloride cement slurry, accelerate the hydration reaction rate and refine the pores.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141806408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strength characteristics of cement slurry in high geothermal tunnel environment 高地热隧道环境中水泥浆的强度特性

IF 1.4 4区工程技术

Advances in Cement Research Pub Date : 2024-07-10 DOI: 10.1680/jadcr.23.00105

Meng Wang, Weihao Li, Zhiheng Wang, Chunyu Zhang, Changzhi Shao, Xianjie Xu, Ping Jiang, Yan-kai Liu, Rentai Liu

{"title":"Strength characteristics of cement slurry in high geothermal tunnel environment","authors":"Meng Wang, Weihao Li, Zhiheng Wang, Chunyu Zhang, Changzhi Shao, Xianjie Xu, Ping Jiang, Yan-kai Liu, Rentai Liu","doi":"10.1680/jadcr.23.00105","DOIUrl":"https://doi.org/10.1680/jadcr.23.00105","url":null,"abstract":"The early-age strength of grouting material is crucial for tunnel support under high geothermal temperatures. Grouting materials (such as the most commonly used cement slurry) hydrate and solidify under the condition of variable temperature curing after entering the real stratum. However, the development process of early strength of cement paste under the condition of variable temperature curing is still unclear. This study aims to elucidate the environmental effects of high ground heat tunnels on the early strength development of cement stone. The cement slurry undergoes variable temperature curing under three different temperatures (T=40℃, 60℃, 80℃) and two different relative humidity conditions (H=5%, 95%) through design experiments. Through the compressive strength test, combined with X-ray diffraction (XRD), scanning electron microscope (SEM) and nuclear magnetic resonance (NMR), the microscopic characteristics were studied. The results indicate that the strength of cement stone under variable temperature curing is lower than that under constant temperature curing at the same temperature. The influence of variable temperature curing conditions on the strength variation of samples with high W/C and age was greater at 80℃. The research results are helpful to understand the influence of environmental effects of high ground temperature tunnels on the properties of grouting materials.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141660505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phase quantification of anhydrous CSA cements: a combined X-ray diffraction and Raman imaging approach 无水 CSA 水泥的相定量：X 射线衍射和拉曼成像相结合的方法

IF 2 4区工程技术

Advances in Cement Research Pub Date : 2024-06-13 DOI: 10.1680/jadcr.23.00238

Chirayu Kothari, Nishant Garg

引用次数: 0

Hydration of a 2-component CSA-OPC-mix – timing of component blending & setting on demand 双组分 CSA-OPC 混合物的水合--组分混合时间和按需设定

IF 2 4区工程技术

Advances in Cement Research Pub Date : 2024-06-10 DOI: 10.1680/jadcr.23.00231

C. Jakob, Jennifer Viola Rudolph, J. Wolf, Jürgen Neubauer

{"title":"Hydration of a 2-component CSA-OPC-mix – timing of component blending & setting on demand","authors":"C. Jakob, Jennifer Viola Rudolph, J. Wolf, Jürgen Neubauer","doi":"10.1680/jadcr.23.00231","DOIUrl":"https://doi.org/10.1680/jadcr.23.00231","url":null,"abstract":"With the ongoing development of new technologies like 3D printing, the requirements for the performance of cementitious materials become more complex. Setting on demand, while the workability of the material is retained until placement, is an important aspect of this usage. A ternary CSA-OPC-C$ system was developed to achieve setting on demand in a 2-component setup, where two retarded cementitious components were mixed after specific times of storage. The kinetics of the individual systems and the blend were examined by heat flow calorimetry, quantitative X-ray diffraction and pore water analysis. The rheological development was monitored by a penetration test method. The results show that the performance of the blend is independent of the storage time of the individual components and can be tailored by changes in the retarder dosage in the individual components. The initial reaction in the blend is characterized by the simultaneous dissolution of ye'elimite and C3S, resulting in the formation of ettringite as the sole detectable hydrate phase. The fate of silicon remains unclear as with the methodology at hand no silicon incorporating hydrate phase can be identified.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141360929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and properties of a belite-CSA cement obtained using only waste materials 仅利用废料获得的褐铁矿-CSA 水泥的合成与性能

IF 2 4区工程技术

Advances in Cement Research Pub Date : 2024-06-05 DOI: 10.1680/jadcr.24.00005

M. Marroccoli, A. Telesca, B. Lothenbach, F. Winnefeld

{"title":"Synthesis and properties of a belite-CSA cement obtained using only waste materials","authors":"M. Marroccoli, A. Telesca, B. Lothenbach, F. Winnefeld","doi":"10.1680/jadcr.24.00005","DOIUrl":"https://doi.org/10.1680/jadcr.24.00005","url":null,"abstract":"Belite-calcium sulfoaluminate (BCSA) clinkers are usually obtained at temperatures lower than 1350°C by burning a raw meal composed of limestone, clay, natural gypsum and bauxite. The use of limestone quarry waste, dredged sediments, water potabilization sludge and flue gas desulfurization gypsum as complete substitutes for natural raw materials was investigated. Two BCSA clinkers based on natural raw materials and on waste materials, respectively, were synthesized in a laboratory electric furnace. Two BCSA cements were prepared by blending the clinkers with natural anhydrite at the same calcium sulfate / ye'elimite ratio, and their hydration behaviour was investigated. The BCSA cement made from the waste materials showed a faster early reaction than the one prepared from natural raw materials. At later ages, both cements developed a similar hydrate assemblage, consisting mainly of ettringite, AFm-phases and strätlingite. Also the physical properties, i.e. compressive strength, porosity and volume stability, are rather similar, with the exception that late compressive strength (after 56 days) is significantly higher for the cement made from waste materials. The results show that it is possible to manufacture BCSA clinkers entirely from local waste materials.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141385620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Feasibility study of adding alkali activator Ca(OH)2 into ferrous extraction tailing of nickel slag-ordinary Portland cement composite cementitious system: working performance, mechanical properties, and reaction mechanism 在镍渣-普通硅酸盐水泥复合胶凝体系的铁萃取尾渣中添加碱活化剂 Ca(OH)2 的可行性研究：工作性能、力学性能和反应机理

IF 2 4区工程技术

Advances in Cement Research Pub Date : 2024-06-05 DOI: 10.1680/jadcr.23.00168

Yanning Song, Hong-zhuo Qiao, Qiong Feng, Chao Wei, Jianghua Zheng, Hong-zhuo Qiao

{"title":"Feasibility study of adding alkali activator Ca(OH)2 into ferrous extraction tailing of nickel slag-ordinary Portland cement composite cementitious system: working performance, mechanical properties, and reaction mechanism","authors":"Yanning Song, Hong-zhuo Qiao, Qiong Feng, Chao Wei, Jianghua Zheng, Hong-zhuo Qiao","doi":"10.1680/jadcr.23.00168","DOIUrl":"https://doi.org/10.1680/jadcr.23.00168","url":null,"abstract":"To solve the problem of low early-phase reactivity of ferrous extraction tailing of nickel slag (FETNS), the effects of Ca(OH)2 as an alkali activator on the working performance, mechanical properties, and hydration products of FETNS-ordinary Portland cement (OPC) composite cementitious system were studied. The results show that the addition of Ca(OH)2 shortens the initial setting time of the composite cementitious system by about 40% and the final setting time by about 20%. The compressive strength at 3d, 7d, 28d and 60d is increased by 51.95%, 45.27%, 8.53% and 8.9%, respectively. The microstructure inside the pastes is characterized by scanning electron microscopy (SEM). X-ray diffraction (XRD), simultaneous thermal analysis (TG-DTG), nitrogen adsorption test (N2-Sorption isotherm), and low-field nuclear magnetic resonance (LF-NMR) analysis show that the incorporation of Ca(OH)2 increases the reaction degree of the composite cementitious system, and more C-S-H gel and ettringite (AFt) are generated to fill the internal pores, which improve the compactness of the structure. The incorporation of Ca(OH)2 can stimulate the early-phase reactivity of the composite cementitious system, promote the formation of reaction products, and optimize the internal pore structure.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141384554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing cement hydration by core/shell PS@SiO2 nanoparticles 通过核/壳 PS@SiO2 纳米粒子提高水泥水化效果

IF 2 4区工程技术

Advances in Cement Research Pub Date : 2024-05-10 DOI: 10.1680/jadcr.23.00203

Meytal Shalit, Maya Radune, Yaniv Knop, Y. Mastai

{"title":"Enhancing cement hydration by core/shell PS@SiO2 nanoparticles","authors":"Meytal Shalit, Maya Radune, Yaniv Knop, Y. Mastai","doi":"10.1680/jadcr.23.00203","DOIUrl":"https://doi.org/10.1680/jadcr.23.00203","url":null,"abstract":"Nanoparticles are widely used in construction. Here, nano-SiO2 is employed, in a way that prevents agglomeration of the nanoparticles, as pozzolanic material to improve Portland cement hydration and to improve the properties of the concrete. To explore the effect of nano-SiO2 and core-shell PS@SiO2 on cement properties, spherical polystyrene particles were prepared by dispersion polymerization of styrene in polar solvents and characterized by FTIR and E-SEM. The core shells PS@SiO2 were synthesized by Stöber method. The results showed an amorphous nano-SiO2 layer can be deposited uniformly on polystyrene particles. This core/shell structure was reducing the aggregation of nano-SiO2 effectively. It was shown that PS@SiO2 particles improved the concrete performances compared to blended cement with nano-SiO2 due to the agglomeration affect. Highlights • Core/shell PS@SiO2 nanoparticles with a uniform coating layer were prepared. • As-prepared nanoparticles were characterized by a variety of advanced methods. • Nanoparticles accelerate hydration and lower the spatial weight of cement paste. • Core/shell nanoparticles improve cement hydration much better than nano-SiO2.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140991435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0