Influence of steel slag on the properties of alkali-activated fly ash and blast-furnace slag based fiber reinforced composites
Influence of steel slag on the properties of alkali-activated fly ash and blast-furnace slag based fiber reinforced composites
复制标题
钢渣对碱活化粉煤灰和高炉矿渣基纤维增强复合材料性能的影响
DOI：
10.1016/j.cemconcomp.2020.103875
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发表时间：
2020-11
影响因子：
10.5
通讯作者：
Wu Min
中科院分区：
文献类型：
--
作者：
Zhao Yujing;Shi Tao;Cao Liying;Kan Lili;Wu Min
本文主要研究了以钢渣为前驱体的碱激发纤维增强复合材料。除了找到一种可持续的方法来重复利用大量的工业副产品SS之外，它的目标也是开发具有良好延展性的材料系统，可以用于各种应用。用SS部分替代(0%~25%)粉煤灰(FA)和磨细高炉渣(GGBS)，研究了SS对碱激发体系的影响。测试了复合材料的拉伸和压缩性能。仔细分析了拉伸试验下的开裂特征。进行了包括三点弯曲试验和单裂纹拉伸试验在内的细观试验，以了解高延性的机理。采用扫描电子显微镜(SEM)对其微观结构进行了研究。力学性能测试结果表明，当SS掺量为15%时，其抗拉强度、拉应变能力和抗压强度分别为4.86 Mpa、3.94%和93 Mpa。SS取代率高于15%会导致所研究的所有力学性能恶化。SS的替代对所涉及的复合材料体系的开裂特性影响有限。细观研究的结果有助于解释(S)解释所研究混合料高塑性的机理。其中，能量指数较好地反映了SS替代对体系拉应变能力的影响。与对照混合料相比，掺入15%的SS对复合材料的微观结构影响不大，但在一定程度上改善(削弱)了纤维与基体的界面结合，提高了材料的延性。
This work focuses on studying the alkali-activated fiber reinforced composites (AAFRCs) with steel slag (SS) as a precursor material. Apart from finding a sustainable way to reuse the enormous amount of industrial by-product SS, it is also the aim to develop material systems with excellent ductility that may be used in a variety of applications. Using SS as a partial replacement (0%–25%) for fly ash (FA) and ground granulated blast-furnace slag (GGBS), the influence on the alkaline activated system was carefully studied. Tensile and compressive properties of the composites were tested. Cracking characteristics under tensile tests were carefully analyzed. Meso-scale studies were performed, including three-point bending test and single crack tensile test, aiming to understand the mechanisms of the high ductility. Scanning electron microscopy (SEM) was adopted to study the microstructure. Based on the results of the mechanical properties, the optimum mix is with 15% SS replacement, where the tensile strength, tensile strain capacity and the compressive strength are 4.86 MPa, 3.94% and 93 MPa, respectively. SS replacement ratio higher than 15% leads to the deterioration of all the studied mechanical properties. The SS replacement has limited impact on the cracking characteristics of the concerned composite system. The results of the meso-scale studies help to explain the mechanism(s) accounting for the high ductility of the studied mixes. Especially, the influence of the SS replacement on the tensile strain capacity of the studied system is well reflected by the energy index. The SS replacement with a ratio of 15% showed no significant impact on the microstructure in comparison with that of the control mix, while it appears that the SS replacement modifies (weakens) the fiber-matrix interfacial bonding to some extent, leading to the improvement of the ductility.
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影响因子：
7.4
作者：
Al-Majidi, Mohammed Haloob;Lampropoulos, Andreas P.;Al-Rekabi, Salam
通讯作者：
Al-Rekabi, Salam
DOI：
10.1061/(asce)0899-1561(2001)13:6(399
发表时间：
2001-11-01
影响因子：
3.2
作者：
Redon, C;Li, VC;Ogawa, A
通讯作者：
Ogawa, A
影响因子：
11.1
作者：
Shunxiang Wang;Guofang Zhang;Bo Wang;Min Wu
通讯作者：
Shunxiang Wang;Guofang Zhang;Bo Wang;Min Wu
影响因子：
4.6
作者：
T. Suwan;M. Fan;N. Braimah
通讯作者：
T. Suwan;M. Fan;N. Braimah
DOI：
--
发表时间：
2008
期刊：
--
影响因子：
--
作者：
S. Hui-sheng
通讯作者：
S. Hui-sheng