文献类型：期刊文献

英文题名：Utilization of modified corn stover powder as sustainable binder into eco-friendly mortar

作者：He, Zhi-hai[1,2];Hong, Di-ping[1];Jiang, Yuan-yuan[1];Zhai, Wen-qiang[1];Wu, Rui-qian[1];Tang, Wei[3];Liu, Bao-ju[4]

机构：[1]Shaoxing Univ, Coll Civil Engn, Shaoxing 312000, Peoples R China;[2]Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Peoples R China;[3]Shaoxing Vocat & Tech Coll, Dept Architecture & Design Art, Shaoxing 312000, Peoples R China;[4]Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China

年份：2025

卷号：26

外文期刊名：RESULTS IN ENGINEERING

收录：ESCI(收录号：WOS:001471425100001)、EI(收录号：20251518215265)、Scopus(收录号：2-s2.0-105002255187)、WOS

基金：The authors would like to acknowledge the Natural Science Foun-dation of Zhejiang Province (Grant No LY20E020006) for their financial support to the work present in this paper.

语种：英文

外文关键词：Modified corn stover powder; Cement-based materials; Mechanical properties; Microstructure; Ecological evaluation

外文摘要：Corn stover powder is a type of agricultural waste, and its incineration causes several problems, such as environmental pollution and resource waste. Therefore, it is imperative to address the resource utilization problem of corn stover powder. In this study, modified corn stover powder (MCSP) is prepared by calcining corn stover powder at 600 degrees C for 2 h. The effects of MCSP as a supplementary cementitious material on the fluidity, setting time, compressive strength, shrinkage and microstructure of cement-based materials are investigated, and the corresponding ecological evaluation is conducted. The findings demonstrated that with the MCSP dosage increases, the fluidity of the mortar reduces and the setting time of the pastes generally shortens. Meanwhile, incorporating 5 % MCSP improves the 28-d compressive strength of the mortar by 18.4 % compared with the ordinary mortar. Incorporating 5 % MCSP refines the pore structure of mortar and increases the hydration product content, thus decreasing the drying shrinkage of the mortar. The autogenous shrinkage of the mortar decreases with increasing MCSP dosage. Furthermore, the cost, CO2 emission and energy consumption of the MCSP mortar decrease with MCSP dosage increasing. The recycling of MCSP is beneficial to produce green and low-carbon mortar.