Study on dispersibility, fluidity, and basic mechanical properties of ultra-high performance concrete modified by multilayer graphene oxide
1
1School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Road, Yangpu District, Shanghai 200093, China
2
College of Civil Engineering, Tongji University, 1239 Siping Road, Yangpu District, Shanghai 200092, China
3
Shanghai Construction Group Co., Ltd., Shanghai 200080, China
Submission date: 2024-01-15
Final revision date: 2025-12-09
Acceptance date: 2026-09-07
Publication date: 2026-09-29
Cement Wapno Beton 30(6) 454-472 (2025)
KEYWORDS
multilayer graphene oxideultra-high performance concretedispersionfluiditybasic mechanical properties
TOPICS
ABSTRACT
The dispersion of multilayer graphene oxide [MGO] in deionized water and saturated lime water was studied by ultraviolet spectrophotometry. The MGO dispersion samples with different ultrasonic power and different dosages of polycarboxylic acid superplasticizer [SP] were studied. The results show that the dispersion of MGO in deionized water is better than that in saturated lime water. When the mass ratio of MGO to SP is 0.4, the dispersion of MGO in deionized water and saturated lime water is the best. The flow properties and compressive and flexural properties of MGO-modified ultra-high performance concrete [UHPC] were studied. The fluidity of MGO-modified UHPC can be improved by ultrasonic treatment and SP incorporation compared with the control samples without ultrasonic treatment and SP incorporation. When the ultrasonic power is 400 W and the MGO content is 0.02 wt.%, the compressive strength and flexural strength of UHPC are the highest.
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