Results 11 to 20 of about 552,793 (295)

Multiscale poromechanics of wet cement paste [PDF]

Proceedings of the National Academy of Sciences, 2019
Significance Capillary effects in cement paste are associated with multiple degradation mechanisms. Using a framework, we investigated the role of capillary forces in cement paste under partial saturation from the nanograins level to the mesoscale.
Tingtao Zhou, Katerina Ioannidou, Franz-Josef Ulm, Martin Z. Bazant, R. J.-M. Pellenq   +4 more
openaire   +3 more sources

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

Surface characterization of carbonated recycled concrete fines and its effect on the rheology, hydration and strength development of cement paste

, 2020
Carbonation treatment can effectively improve the performance of recycled concrete aggregate and fines due to the reactions of CO2 with CH and C–S–H gel of cement paste.
Xiaowei Ouyang, Liquan Wang, Shida Xu, Yuwei Ma, G. Ye   +4 more
semanticscholar   +1 more source

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

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

Study on Utilization of Carboxyl Group Decorated Carbon Nanotubes and Carbonation Reaction for Improving Strengths and Microstructures of Cement Paste

Nanomaterials, 2016
Carbon nanotubes (CNTs) have excellent mechanical properties and can be used to reinforce cement-based materials. On the other hand, the reaction product of carbonation with hydroxides in hydrated cement paste can reduce the porosity of cement-based ...
Xiantong Yan, Hongzhi Cui, Qinghua Qin, Waiching Tang, Xiangming Zhou   +4 more
doaj   +1 more source

XRD-Rietveld Method for Evaluating the Leaching Characteristics of Hardened Cement Paste in Flowing Water

Advances in Civil Engineering, 2020
In order to study the leaching characteristics of hardened cement paste by flowing environmental water, indoor simulated leaching tests of Portland cement paste were carried out at different flow velocities with home-made flow field device and tap water ...
Lunchao Zhang, Jikai Zhou, Xu He, Chen Chen   +3 more
doaj   +1 more source

The Effects of the Addition of Polyurethane–MgO Nanohybrids on the Mechanical Properties of Ordinary Portland Cement Paste

Nanomaterials, 2022
One of the most important methods of controlling the properties of concrete and cement-based materials is to control the rate and kinetics of cement hydration.
Yu Fang, Weiqing Ning, Yuan Li, Fang Li, Reza Pournajaf, Bejan Hamawandi   +5 more
doaj   +1 more source