Preparation of slag-based foam concrete by chemical foaming for CO2 sequestration

• Autorzy: Li Wei , Lyu Zhiwen , Liu Jian , Li Wei , Sun Ziqiang , Ma Yan , Cheng Weimin , Meng Xiangjun , Xin Lin , Sun Xikui

Identyfikatory

DOI

10.37190/epe240206

• Języki publikacji: EN

Abstrakty

EN

Carbon dioxide emissions are among the most influential causes of global warming, and the recovery, capture, and comprehensive utilization of CO₂ are the keys to carbon emissions reduction. High-porosity foam concrete was prepared using CaO as the alkali activator, and H₂O₂ as the foaming agent. Based on a single-factor experiment and response surface analysis, the best preparation condi-tions for foam concrete were obtained (water-to-cement ratio 0.4, alkali excitation dosage 10.73%, foaming agent dosage 8.26%). The porous material prepared under the optimal process conditions can achieve a CO₂. sequestration performance of 91.59 kg/m³, and the actual sequestration capacity is con-sistent with the theoretical prediction value of 90.89 kg/m³. Mechanistic analysis shows that the precarbonation hydration products of foam concrete are mainly C-S-H gel, Ca(OH)₂, and hydrotalcite-like compounds, which bond the slag particles together to form a three-dimensional spatially firmly con-nected structure. This study provides a reference for the application of alkaline solid waste materials in the field of carbon sequestration.

Słowa kluczowe

EN

carbon dioxide; emission control; foam concrete; portland cement

PL

dwutlenek węgla; kontrola emisji; pianobeton; cement portlandzki; globalne ocieplenie

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2024
• Tom: Vol. 50, nr 2
• Strony: 95--114
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Li Wei

• Shandong Energy Group Company Limited, Jinan 250101, Shandong

autor

Lyu Zhiwen

• College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China

autor

Liu Jian

• Shandong Energy Group Company Limited, Jinan 250101, Shandong.

autor

Li Wei

• Shandong Energy Power Group Company Limited, Jinan 250014, Shandong

autor

Sun Ziqiang

• Shandong Luxi Power Generation Company Limited, Jining 272000, Shandong

autor

Ma Yan

• Shandong Luxi Power Generation Company Limited, Jining 272000, Shandong

autor

Cheng Weimin

• College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China

autor

Meng Xiangjun

• College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China,

autor

Xin Lin

• College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China,

autor

Sun Xikui

• Shandong Energy Group Company Limited, Jinan 250101, Shandong.

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