Effects of using aqueous graphene on behavior and mechanical performance of cement-based composites
Effects of using aqueous graphene on behavior and mechanical performance of cement-based composites
复制标题
DOI：
10.1016/j.conbuildmat.2023.130466
复制
发表时间：
2023-03
影响因子：
7.4
通讯作者：
Nguyen Tien Dung;M. Su;Michael S. Watson;Y. Wang
中科院分区：
文献类型：
--
作者：
Nguyen Tien Dung;M. Su;Michael S. Watson;Y. Wang
本文首次提出了在波特兰水泥（PC）砂浆中对水性石墨烯（AG）的研究结果。研究发现，AG可用于替代PC砂浆中的粉末状原始石墨烯纳米片（PG）。AG具有比PG更少的附聚物，因此，AG不仅具有比PG更低的制造和碳成本，还显示出在提高PC的抗压强度方面优于PG。使用AG增加了水泥凝胶成核引晶和H2PC水合，从而改善了水合产物的含量和形态，AG砂浆样品的所得抗压强度比PG砂浆样品高约13%（70对62 MPa）。
This paper presents the results of an investigation into aqueous graphene (AG) in Portland cement (PC) mortars for the first time. The investigation found that AG can be used to replace powdered pristine graphene nanoplatelets (PG) in PC mortar. AG has fewer agglomerates than PG thus, AG not only has lower manufacturing and carbon costs compared to PG, it is also shown to outperform PG in improving the compressive strength of PC. Using AG increases cement gel nucleation seeding and prolongs PC hydration thereby improving the content and morphology of the hydration products with the resulting compressive strength of AG mortar samples being about 13 % higher than PG mortar samples (70 vs 62 MPa).