scholarly journals Effect of Supplementary Cementitious Material and Fine Recycled Aggregates on Shrinkage Properties of Self-Compacting Microconcrete

2020 ◽  
Author(s):  
M. Etxeberria ◽  
B. Reddy
Keyword(s):  
Cementitious Material ◽  
Recycled Aggregates ◽  
Supplementary Cementitious Material

scholarly journals CO2 mineralization of demolished concrete wastes into a supplementary cementitious material – a new CCU approach for the cement industry

2021 ◽  
Vol 6 ◽  
pp. 53-60
Author(s):  
Maciej Zajac ◽  
Jan Skocek ◽  
Jørgen Skibsted ◽  
Mohsen Ben Haha
Keyword(s):  
Silica Gel ◽  
Cement Paste ◽  
Cementitious Material ◽  
Cement Industry ◽  
Recycled Concrete ◽  
Recycled Aggregates ◽  
Supplementary Cementitious Material ◽  
Co2 Mineralization ◽  
Concrete Recycling ◽  
Composite Cements

This contribution discusses the carbon capture and utilization (CCU) approach based on CO2 mineralization of cement paste from recycled concrete as new approach to capture CO2 and significantly contribute to the reduction in CO2 emissions associated with cement production. The current literature suggests that all CO2 released from the decomposition of limestone during clinker production can be sequestered by carbonation of the end-of-life cement paste. This carbonation can be achieved in a few hours at ambient temperature and pressure and with a relatively low CO2 concentration (< 10 %) in the gas. The carbonation of cement paste produces calcite and an amorphous alumina-silica gel, the latter being a pozzolanic material that can be utilized as a supplementary cementitious material. The pozzolanic reaction of the alumina-silica gel is very rapid as a result of its high specific surface and amorphous structure. Thus, composite cements containing carbonated cement paste are characterized by a rapid strength gain. The successful implementation of this CCU approach relies also on improved concrete recycling techniques and methods currently under development to separate out the cement paste fines and such. Full concrete recycling will further improve the circular utilization of cement and concrete by using recycled aggregates instead of natural deposits of aggregates.  Although the feasibility of the process has already been demonstrated at the industrial scale, there are still several open questions related to optimum carbonation conditions and the performance of carbonated material in novel composite cements.

Potentiality of Industrial Waste as Supplementary Cementitious Material in Concrete Production

2020 ◽  
Vol 11 (5) ◽  
pp. 214
Author(s):  
Sajjad Ali Mangi ◽  
Zubair Ahmed Memon ◽  
Shabir Hussain Khahro ◽  
Rizwan Ali Memon ◽  
Arshad Hussain Memon
Keyword(s):  
Industrial Waste ◽  
Cementitious Material ◽  
Supplementary Cementitious Material ◽  
Concrete Production

Effects of the mechanical milling method on transport properties of self-compacting concrete containing perlite powder as a supplementary cementitious material

2018 ◽  
Vol 172 ◽  
pp. 677-684 ◽  
Author(s):  
S. Mahmoud Motahari Karein ◽  
Alireza Joshaghani ◽  
A.A. Ramezanianpour ◽  
Soroush Isapour ◽  
Moses Karakouzian
Keyword(s):  
Transport Properties ◽  
Mechanical Milling ◽  
Cementitious Material ◽  
Self Compacting Concrete ◽  
Supplementary Cementitious Material ◽  
Milling Method

Effect of acid treatment on the reactivity of natural sepiolite used as a supplementary cementitious material

2022 ◽  
Vol 316 ◽  
pp. 125860
Author(s):  
Chun-Ran Wu ◽  
Zhi-Qiang Hong ◽  
Bao-Jian Zhan ◽  
Wei Tang ◽  
Shi-Cai Cui ◽  
...  
Keyword(s):  
Acid Treatment ◽  
Cementitious Material ◽  
Supplementary Cementitious Material

scholarly journals Overview of clay as supplementary cementitious material

2019 ◽  
Author(s):  
Matea Flegar ◽  
Marijana Serdar ◽  
Diana Londono-Zuluaga ◽  
Karen Scrivener
Keyword(s):  
Cementitious Material ◽  
Supplementary Cementitious Material
Sign in / Sign up

Export Citation Format

Share Document