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Feng Chen, Shenghao Tong, Wang Hao and Shilin Shen
In this research, Ni-Fe slag powder and mineral powder are blended into mineral admixtures and added to soil cement, with the aim of investigating the mechanical property of soil cement under a dynamic environment, and the dynamic properties of Ni-Fe sla...
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Taewan Kim, Ki-Young Seo, Choonghyun Kang and Tak-Kee Lee
This is an experimental study on the development of a low-carbon, eco-friendly cement containing a calcium sulfoaluminate expansive agent (CSAe), slag, and silica fume (SF). The cement to be developed has a low water/binder ratio (w/b) of 0.5 and is desi...
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Guangzheng Qi, Qiang Zhang and Zhengning Sun
Supersulfated cement (SSC), a low-carbon, energy-efficient, eco-friendly cementitious material, is mainly made from industrial byproducts. However, SSC?s slow early strength development leads to inadequate initial hardening and reduced durability, which ...
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Junhao Ye, Songhui Liu, Jingrui Fang, Haibo Zhang, Jianping Zhu and Xuemao Guan
This study focused on the synthesis of aragonite whiskers through a synergistic wet carbonation technology utilizing waste magnesia slag (MS) and magnesium sulfate (MgSO4), aiming to improve the microstructure and mechanical properties of ordinary Portla...
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Murugan Muthu, Sanjeev Kumar and Lukasz Sadowski
Reactive magnesia cement (RMC) has gained interest due to its lower production temperatures when compared to Portland cement. In this study, the performance of pozzolan-based RMC concrete samples against sulphate attack was examined. Cube samples, after ...
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Bettina Kraft, Rebecca Achenbach, Horst-Michael Ludwig and Michael Raupach
The cement industry gains increasing public attention because of the high CO2 emissions for which it is accountable. One approach to improve the carbon footprint of cement production is the development of alternative binders, which can be produced with l...
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Lea ?ibret, Katarina ?ter, Maru?a Bor?tnar, Mojca Loncnar and Sabina Dolenec
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Klaus Voit, Oliver Zeman, Ivan Janotka, Renata Adamcova and Konrad Bergmeister
Clinker production is very energy-intensive and responsible for releasing climate-relevant carbon dioxide (CO2) into the atmosphere, and the exploitation of aggregate for concrete results in a reduction in natural resources. This contrasts with infrastru...
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Taegyu Lee and Jaehyun Lee
The mixing proportions of concrete were examined with regard to the durability performance and early strength in coastal areas. Research was conducted to improve the C24 mix (characteristic strength of 24 MPa). C35 concrete (characteristic strength of 35...
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Jaehyun Lee, Taegyu Lee, Hyeonggil Choi and Dong-Eun Lee
There have been many studies on the effect of durability and compressive strength on the increase of the mixing rate of admixtures. However, there is no research that can provide a guide on the optimal mixture proportions for maintaining compressive stre...
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Theofani Tzevelekou, Paraskevi Lampropoulou, Panagiota P. Giannakopoulou, Aikaterini Rogkala, Petros Koutsovitis, Nikolaos Koukouzas and Petros Petrounias
?he smelting process can be applied for the direct recycling of the nickel ferrous dust collected in the gas cleaning systems of the rotary kilns (R/Ks) during the pre-reduction of laterite ore in the course of ferronickel production by the pyrometallurg...
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Bernard A. Zulu, Shingo Miyazawa and Nobukazu Nito
Thermal stresses are generated in concrete during the accelerated curing process in precast concrete. These stresses may cause concrete to crack, which would have a negative effect on the general concrete performance. This paper provides the results of t...
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Bernard A. Zulu, Shingo Miyazawa and Nobukazu Nito
Accelerated curing is used for mass production in the precast concrete industry. Autogenous shrinkage and drying shrinkage occur in concrete, during and after accelerated curing. Thus, thermal cracks may occur in concrete due to both heating and cement h...
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Gyeongcheol Choe, Sukpyo Kang and Hyeju Kang
In this study, a method was suggested to produce dried powder from red mud (RM) sludge with 40%?60% water content without heating. The RM sludge is discharged from the Bayer process, which is used to produce alumina from bauxite ores. Nonthermally treate...
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Adriana Estokova, Michaela Smolakova and Alena Luptakova
Wastewater structures, such as treatment plants or sewers can be easily affected by bio-corrosion influenced by microorganisms living in waste water. The activity of these microbes results in deterioration and can cause the reduction in structural perfor...
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M. I. Netesa,D. V. Palanchuk,A. M. Netesa
Pág. 137 - 145
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Vinh Thi Hai Chu, Vinh Duc Bui and Tue Viet Nguyen
Ultra-High Performance Concrete (UHPC) improves the bearing capacity as well as the durability of structural concrete. This study aims to investigate the constituents of UHPC in both phases: aggregate and cementitious materials. The proper ratio of the m...
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Tatiana Petrova, Eduard Chistyakov, Yulia Sorvacheva
Pág. 505 - 510
The study is aimed at revealing the correlation between the critical coefficient of stress intensity and slag alkaline cement-free concrete structure and strength. Based on the fracture mechanics methods, the comparative assessment of crack formation in ...
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Ana Lourenço, Luís Silva, Vera Fernandes and Pedro Sequeira
The impact that construction has on sustainability as a relevant consumer of materials is well known, especially with regard to cement, which contributes to high CO2 emissions. It is well known that in tile adhesives, cement add positive technical contri...
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Ankit Kothari, Thanyarat Buasiri and Andrzej Cwirzen
This study determined how replacing sodium nitrate-based antifreeze admixture (AF) with belite-calcium sulfoaluminate (belite-CSA) cement affects the early age properties of ecological concretes based on ordinary Portland cement (OPC) and ground granulat...
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