Advances in Cement Research最新文献_第5页

Investigation of dynamic compression properties of basalt fiber reactive powder concrete 玄武岩纤维活性粉末混凝土动态压缩性能研究

IF 2 4区工程技术

Advances in Cement Research Pub Date : 2023-12-04 DOI: 10.1680/jadcr.23.00007

Haiyang Sha, Jinchun Liu, Xianwen Fu

引用次数: 0

Effect of gypsum on the hydration of fused cement clinker from basic oxygen furnace slag 石膏对碱性氧炉渣水泥熟料水化的影响

IF 2 4区工程技术

Advances in Cement Research Pub Date : 2023-11-24 DOI: 10.1680/jadcr.23.00070

Katharina Schraut, Burkart Adamczyk, Christian Adam, Dietmar Stephan, Birgit Meng, Sebastian Simon, Julia von Werder, Tamino Hirsch, Tanja Manninger

{"title":"Effect of gypsum on the hydration of fused cement clinker from basic oxygen furnace slag","authors":"Katharina Schraut, Burkart Adamczyk, Christian Adam, Dietmar Stephan, Birgit Meng, Sebastian Simon, Julia von Werder, Tamino Hirsch, Tanja Manninger","doi":"10.1680/jadcr.23.00070","DOIUrl":"https://doi.org/10.1680/jadcr.23.00070","url":null,"abstract":"Fused cement clinker can be produced from molten basic oxygen furnace slag (BOFS) via a reductive thermochemical treatment. During the thermochemical treatment, oxidic iron is reduced to metallic iron and separated. The resulting low-iron slag has a chemical and mineralogical composition similar to ordinary Portland cement (OPC) clinker. In this study, the hydraulic reactivity of the fused clinker from BOFS (BOFS) with and without gypsum was investigated using isothermal calorimetry, differential scanning calorimetry (DSC), in-situ X-ray diffraction and powder X-ray diffraction (PXRD). Furthermore, a synthetic fused clinker without foreign ions and fused clinker produced by a mixture of both materials was studied. The hydraulic reaction of the fused clinker from BOFS was considerably slower than that of ordinary Portland cement. However, the reaction can be accelerated by adding gypsum as a sulfate carrier. Furthermore, the results showed an increased reaction rate with decreasing content of foreign ions such as Fe, P or Mn.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138509742","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

Parametric analysis of the production of alternative sodium silicate applied in alkali-activated materials 用于碱活性材料的替代水玻璃的参数分析

IF 2 4区工程技术

Advances in Cement Research Pub Date : 2023-11-21 DOI: 10.1680/jadcr.23.00005

Deise Trevizan Pelissaro, Suelen Cristina Vanzetto, Francisco Dalla Rosa, Pedro Domingos Marques Prietto, Adriana Augustin Silveira

{"title":"Parametric analysis of the production of alternative sodium silicate applied in alkali-activated materials","authors":"Deise Trevizan Pelissaro, Suelen Cristina Vanzetto, Francisco Dalla Rosa, Pedro Domingos Marques Prietto, Adriana Augustin Silveira","doi":"10.1680/jadcr.23.00005","DOIUrl":"https://doi.org/10.1680/jadcr.23.00005","url":null,"abstract":"Although alkali-activated materials are considered potential substitutes for Portland cement, they still present elevated costs and significant emissions of CO2. One way to partially overcome this disadvantage is the development of alternative activators, such as a sodium silicate based on the dissolution of rice husk ash (RHA). However, to maximize the mechanical performance of alkali-activated materials, the production of RHA-based sodium silicates needs to be fully understood. This article investigates the production process of an alternative RHA-based sodium silicate activator through the experimental evaluation of the following parameters: RHA grinding time, RHA dissolution time, thermal curing temperature and time. The mechanical performance was evaluated through compressive strength tests carried out on alkali-activated pastes made up of metakaolin, as a precursor, and two types of activators (RHA-based sodium silicate and commercial sodium silicate). Microstructural features were evaluated by performing X-Ray Diffraction, Scanning Electron Microscopy, and Thermogravimetry analyses. The optimized production was obtained for a grinding time of 30 minutes, a thermal curing temperature of 40°C, a dissolution time of 6 hours, and a thermal curing time of 8 hours. The results show the efficiency of the alternative alkaline activator, which may represent a technically viable solution for the larger-scale application of alkali-activated materials.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138509743","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

Hydration properties of the composite cementitious materials containing steel slag under steam curing condition 含钢渣复合胶凝材料在蒸汽养护条件下的水化性能

IF 2 4区工程技术

Advances in Cement Research Pub Date : 2023-11-17 DOI: 10.1680/jadcr.23.00102

Maosen Li, Xiao Liang, Long Chen, Shuhua Liu

{"title":"Hydration properties of the composite cementitious materials containing steel slag under steam curing condition","authors":"Maosen Li, Xiao Liang, Long Chen, Shuhua Liu","doi":"10.1680/jadcr.23.00102","DOIUrl":"https://doi.org/10.1680/jadcr.23.00102","url":null,"abstract":"Steel slag (SS) is a by-product of steel industry, and its recycling is of great significance. In this study, the influence of SS fineness and curing regimes on the hydration properties of cement and the effects of SS content on the compressive strength of pastes were investigated. The hydration products and microstructure of pastes were further explored through X-ray diffraction (XRD) and Scanning electron microscopy (SEM). The results show that the compressive strength decreases gradually with the increase of SS, and increases with the increase of the specific surface area of SS. The compressive strength of paste after steam curing is improved, and the compressive strength of the paste mixed with 30% SS can reach more than 50 MPa after 90 days of steam curing. The hydration products of paste mixed with SS is not significantly different from that of cement, which is mainly composed of Ca(OH)2 and C-S-H gel, accompanied by a small amount of CaCO3. SS has secondary hydration in long-term age and can fill and refine the pore structure, according to SEM. Using SS as supplementary material is beneficial to reducing cement cost and lowering CO2 emission.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138509741","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

Processing of calcium sulfoaluminate eco-cement coatings containing microencapsulated phase change materials 含微胶囊化相变材料的硫铝酸钙生态水泥涂料的制备

4区工程技术

Advances in Cement Research Pub Date : 2023-11-11 DOI: 10.1680/jadcr.23.00077

Andrea Romero-Espinosa, Susana G. Sanfélix, Alejandro Morales-Cantero, Ana Cuesta, Anna-Lena Kjøniksen, Miguel A. G. Aranda, Angeles G. De la Torre, Isabel Santacruz

{"title":"Processing of calcium sulfoaluminate eco-cement coatings containing microencapsulated phase change materials","authors":"Andrea Romero-Espinosa, Susana G. Sanfélix, Alejandro Morales-Cantero, Ana Cuesta, Anna-Lena Kjøniksen, Miguel A. G. Aranda, Angeles G. De la Torre, Isabel Santacruz","doi":"10.1680/jadcr.23.00077","DOIUrl":"https://doi.org/10.1680/jadcr.23.00077","url":null,"abstract":"On the one hand, calcium sulfoaluminate (CSA) eco-cements release about 40% less carbon dioxide (CO 2 ) than Portland cement during fabrication; on the other hand, phase change materials dispersed in a cementitious matrix can help to optimise the indoor temperature of buildings, reducing carbon dioxide emissions related to heating/air conditioning. However, this is only economically viable if it is used as a thin layer (a coating). In addition, the combination of both materials supposes a double environmental benefit. Consequently, the main objective of this work is the preparation of a suitable homogeneous and well-adhered bilayer sample, composed of CSA and CSA-MPCM. To achieve this, in the first step, the effect of pH, temperature and stirring was studied for microencapsulated phase change material (MPCM) aqueous suspensions (47.3 wt%); second, the MPCM (45 wt% with respect to dry cement) was dispersed in a CSA paste; then, in a third step, a homogeneous well-adhered coating of CSA-MPCM, with undamaged MPCM, was obtained on a CSA matrix. This was achieved through rheological measurements and checked by microscopy. Finally, the corresponding CSA and CSA-MPCM mortars were characterised through their mechanical properties (compression) (70 and 13 MPa at 7 days, respectively) and thermal conductivity (2.06 and 1.19 W/mK, respectively).","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041589","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 use of retardant chemical additives in concrete on rebar corrosion 混凝土中使用阻燃化学添加剂对钢筋腐蚀的影响

4区工程技术

Advances in Cement Research Pub Date : 2023-11-11 DOI: 10.1680/jadcr.22.00189

Behçet Dündar, Emriye Çinar Resuloğlulari, Turhan Can Karci

{"title":"Effect of use of retardant chemical additives in concrete on rebar corrosion","authors":"Behçet Dündar, Emriye Çinar Resuloğlulari, Turhan Can Karci","doi":"10.1680/jadcr.22.00189","DOIUrl":"https://doi.org/10.1680/jadcr.22.00189","url":null,"abstract":"Reinforced concrete (RC) is one of the most widely used building materials. However, RC, especially in coastal seaside or humid environments, can suffer reinforcement corrosion with the result that the reinforcement fails to perform its function over time. The effect of a retarder additive used to eliminate loss of consistency in hot, windy and humid weather on the corrosion of RC elements was investigated in this work. Four different concrete types were assessed, with 0%, 1%, 1.5% and 2% additions of the chemical additive. Along with accelerated corrosion and pressure tests, physical properties such as electrical resistivity, water absorption, porosity, unit weight and capillary water absorption were also determined. The results of this work indicate that the use of up to 2% of the setting retarder did not pose a problem in terms of the physical and mechanical properties of the concrete. However, in terms of the frequently encountered corrosion problem, the use of 1.5% is more appropriate. Many chemical additives are used for different purposes in concrete and it is suggested that, alongside physical and mechanical properties, durability characteristics should also be examined when determining the suitable ratios of these additives.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041590","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

Effects of thermal activation on the hydration performance of lithium slag-cement composite binder 热活化对锂矿渣-水泥复合粘结剂水化性能的影响

4区工程技术

Advances in Cement Research Pub Date : 2023-11-10 DOI: 10.1680/jadcr.23.00068

Yan He, Chunyang You, Shuhua Liu, Mingjing Jiang, Pengcheng Shi

引用次数: 0

Effects of waste magnesia powder as partial cement replacement on self-compacting concrete 废氧化镁粉部分替代水泥对自密实混凝土的影响

4区工程技术

Advances in Cement Research Pub Date : 2023-11-08 DOI: 10.1680/jadcr.22.00126

Songül Can, Ali Sariisik, Tayfun Uygunoğlu

{"title":"Effects of waste magnesia powder as partial cement replacement on self-compacting concrete","authors":"Songül Can, Ali Sariisik, Tayfun Uygunoğlu","doi":"10.1680/jadcr.22.00126","DOIUrl":"https://doi.org/10.1680/jadcr.22.00126","url":null,"abstract":"This experimental study investigated the performance of self-compacting concrete (SCC) mixes with magnesia (MgO) waste. In the series produced with a water/binder ratio of 0.40, cement was replaced by magnesia waste at 2%, 4% and 10% by weight in the SCC. Le Chatelier test, slump flow, compressive strength, flexural strength, depth of penetration of water under pressure, ultrasonic pulse velocity and water absorption by capillary testing was conducted to assess sample performance. X-ray diffraction, thermogravimetric analysis, mercury intrusion porosimetry, differential thermal analysis and scanning electron microscopy were used for the microstructural analysis and quantification of phases within each sample. The results indicated that concrete with magnesia waste contains magnesium silicate hydrate (M–S–H) and brucite ((Mg(OH) 2 ) products. Brucite causes strength loss in concrete. Up to 90 days, specimens with magnesia showed increasing compressive and flexural strength. As the amount of magnesia waste increased, the porosity, depth of water penetration under pressure and water absorption by capillary increased. Incorporating more than 10% of magnesia waste in the SCC mixtures resulted in declining strength. The addition of magnesia waste enhanced the expansion of SCC. An optimum dosage (2%) of magnesia waste was the most advantageous to the strength of SCC.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293675","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

Expansion properties of concrete-filled steel tubes with circulating fluidized bed fly ash 循环流化床粉煤灰对钢管混凝土膨胀性能的影响

4区工程技术

Advances in Cement Research Pub Date : 2023-10-17 DOI: 10.1680/jadcr.23.00088

Ruizhen Yan, Guoju Ke, Dongxiao Han

引用次数: 0

Characterization of cement loaded with magnetically aligned nano-magnetite 磁性排列纳米磁铁矿负载水泥的表征

4区工程技术

Advances in Cement Research Pub Date : 2023-10-16 DOI: 10.1680/jadcr.22.00193

Taha M. Jassam, Bonnie Lau, Jason Ng Yang-Zhi, Kow Kien-Woh, Ramez A. Al-Mansob, Bariş Erdil, Wenjie Luo

引用次数: 0