Results 11 to 20 of about 89,639 (290)

Influences of Carbonated Recycled Concrete Fines on Cement Hydration

Buildings, 2023
The preparation of recycled concrete aggregate generates a lot of fines, which are obstacles for implementing the recycled concrete aggregate. In this work, carbonation treatment is applied to improve the properties of recycled concrete fine, and the ...
Jiake Zhang, Liupeng Zhang, Boyang Xu, Jie Yuan   +3 more
doaj   +1 more source

An Efficient Approach of Predicting the Elastic Property of Hydrating Cement Paste

Frontiers in Materials, 2021
Although elastic properties of hydrating cement paste are crucial in concrete engineering practice, there are only a few widely available models for engineers to predict the elastic behavior of hydrating cement paste.
Baoyu Ma, Guansuo Dui, Zhenglin Jia, Bo Yang, Chunyan Yang, Quangui Gao, Longhua Qin, Ju Ma   +7 more
doaj   +1 more source

The effect of cement modification on the rheological properties of cement paste

Journal of Civil Engineering and Management, 2014
Experimental tests have determined the effect of slag, opoka (silica-calcite sedimentary rock), silica fume (SiO2) suspension, dolomite dust and sodium silicate solution (NaSS) together with the polycarboxylatether based plasticizing admixture on the ...
Eugenijus Janavičius, Mindaugas Daukšys, Gintautas Skripkiūnas, Džigita Nagrockienė, Ala Daugėlienė   +4 more
doaj   +1 more source

Study on the Effects of Ultrasonic Agitation on CO₂ Adsorption Efficiency Improvement of Cement Paste

Applied Sciences, 2021
To realize high-efficiency CO2 absorption by fresh cement paste, ultrasonic vibration technology is introduced into the CO2 absorption test device used in this study. Influences of ultrasonic frequency on the CO2 absorption rate (CO2 AR) and the ultimate
Lili Liu, Yongsheng Ji, Zhanguo Ma, Furong Gao, Zhishan Xu   +4 more
doaj   +1 more source

The Effect of Effective Microorganism (EM) Inclusion to the Setting Time of Microbed Cement Paste

MATEC Web of Conferences, 2017
The inclusion of Effective Microorganism (EM) lengthen the setting time of microbed cement paste with respect to the control cement paste. However, the investigation on the influence of EM ingredients to the setting time was not performed yet in the ...
Ismail Noorli, Mohd Saman Hamidah, Mohd Jaafar Mohd Faizal, Abdullah Siti Radziah   +3 more
doaj   +1 more source

Possibilities of using the ultrasonic wave transmission method to estimate initial setting time of cement paste [PDF]

, 2008
In this paper, the applicability of the ultrasonic wave transmission method to estimate the initial setting time of an arbitrary cement paste is discussed. Ultrasonic pulse velocity measurements were fully automated and measured continuously.
Chotard, Franci Kavčič, Goran Turk, Gregor Trtnik, Grosse, Hewlett, Kamada, Keating, Krauss, Lee, M Sayers, Rapoport, Reinhardt, Sun, Valič, Violeta Bokan Bosiljkov, Voigt, Voigt, Voigt, Voigt   +19 more
core   +2 more sources

The Early Age Hydration Products and Mechanical Properties of Cement Paste with Steel Slag Powder as Additive under Steam Curing Conditions

Buildings, 2023
To explore the feasibility of the application of steel slag powder (SSP) in steam-cured precast concrete, 0% and 20% SSP were used to replace cement and prepare cement paste, and the early age performance of steam-cured (80 °C for 7 h and 7 d) SSP ...
Baoliang Li, Xue Lu, Binbin Huo, Yuheng Du, Yuyi Liu, Yongzhen Cheng, Zejun Liu   +6 more
doaj   +1 more source

Micromechanics analysis of thermal expansion and thermal pressurization of a hardened cement paste [PDF]

, 2011
The results of a macro-scale experimental study of the effect of heating on a fluid-saturated hardened cement paste are analysed using a multi-scale homogenization model.
Baldi, Bernard, Berryman, Brown, Château, Coussy, Derjaguin, Detournay, Dormieux, Dormieux, Dormieux, Eshelby, Garofalini, Ghabezloo, Ghabezloo, Ghabezloo, Ghabezloo, Ghabezloo, Ghabezloo, Hashin, Hershey, Hill, Jennings, Jennings, Mori, Palciauskas, Richardson, Richardson, Scherer, Siavash Ghabezloo, Simonson, Sun, Sun, Taylor, Tennis, Ulm, Valenza, Wagner, Xu, Xu, Xu, Xu, Zaoui, Zaoui, Zimmerman   +44 more
core   +4 more sources

Comparison between two ultrasonic methods in their ability to monitor the setting process of cement pastes [PDF]

, 2009
This paper presents the comparison between ultrasonic wave transmission (USWT) method and ultrasonic wave reflection (USWR) method in their ability to monitor the setting process of cement pastes.
Akkaya, Franci Kavčič, Goran Turk, Gregor Trtnik, Grosse, Hewlett, Kamada, Keating, Korhonen, Krauss, Marko Ivan Valič, Rapoport, Reinhardt, Robeyst, Sayers, Schindler, Stepišnik, Sun, Sun, Trtnik, Valič, Voigt, Voigt, Voigt   +23 more
core   +2 more sources

SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ [PDF]

, 2019
Recycled aggregates (RA) from construction and demolition can be used in permeable concretes (PC), improving the environment. PCs have a significant porous network, their cement paste and the interaction between the paste and the RA establishing their ...
Arredondo Rea, Susana Paola, Chinchillas Chinchillas, Manuel de Jesús, Corral Higuera, Ramón, Gómez Soberón, José Manuel Vicente, Rosas Casarez,, Carlos Antonio   +4 more
core   +2 more sources