Mechanical Properties and Permeability Resistance of Silane-Modified Graphene Oxide Enhanced Cement Mortar

doi:10.16552/j.cnki.issn1001-1625.2024.1617

Abstract

Abstract: In order to improve the performance of concrete in harsh environments, γ-(2,3-epoxypropoxy) propyltrimethoxysilane (GOPS) modified graphene oxide (GO) was prepared by sol-gel method to obtain silylated graphene oxide (fGO). Then the cement mortar was filled with fGO and its mechanical properties were measured. The materials were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that compared with GO, the fGO structure is loosely layered, and the siloxane molecules are grafted with GO through the Si—O—C bond. Compared with the control group, fGO has little effect on the slump and slump flow of cement. When the content of fGO is 0.06% (mass fraction), the 28 d flexural strength and compressive strength of cement mortar increase by 26.36% and 36.29%, respectively, and the capillary water absorption and chloride ion diffusion coefficient decrease by 56.64% and 33.16%, respectively. Thermogravimetric and microscopic analysis show that fGO improved the morphology of hydration products, enhance the adhesion between hydration products and sand particles, and improve the integrity and stability of silicate network as a whole.

Key words: cement mortar, graphene oxide, silane, chloride ion diffusion coefficient, strength

CLC Number:

TU525

HUANG Weilin, YU Jinru, SHANG Jun, WANG Zhongtang. Mechanical Properties and Permeability Resistance of Silane-Modified Graphene Oxide Enhanced Cement Mortar[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(7): 2419-2428.

References

[1] ZHAN Q, ZHOU J, WANG S, et al. Crack self-healing of cement-based materials by microorganisms immobilized in expanded vermiculite[J]. Construction and Building Materials, 2021, 272: 121610.
[2] GLADWIN ALEX A, KEDIR A, GEBREHIWET TEWELE T. Review on effects of graphene oxide on mechanical and microstructure of cement-based materials[J]. Construction and Building Materials, 2022, 360: 129609.
[3] ZHAN J, LEI Z D, ZHANG Y. Non-covalent interactions of graphene surface: mechanisms and applications[J]. Chem, 2022, 8(4): 947-979.
[4] CUI B, GAO X K. Preparation of reduced graphene oxide/polyaniline composite conductive materials by ultrasonic-assisted in situ polymerization[J]. Journal of Electronic Materials, 2022, 51(11): 6160-6167.
[5] OH J Y, CHOI B K, PARK H G, et al. Improved electro-optical properties of sol-gel-processed zirconium strontium tin oxide thin film containing graphene oxide[J]. Journal of Nanoparticle Research, 2024, 26(6): 128.
[6] ZHANG Z Z, YIN Q C, LIU Y H. Phosphorus-containing hyperbranched polysiloxanes intercalated graphene oxide and their flame retardant effect on epoxy resin[J]. Polymer Composites, 2023, 44(11): 7457-7471.
[7] UTHAMAN S, VISHWAKARMA V. Assessment of causes and consequences of concrete deterioration and its remediation[J]. Journal of Building Engineering, 2023, 79: 107790.
[8] WANG P G, MO R, LI S, et al. A chemo-damage-transport model for chloride ions diffusion in cement-based materials: combined effects of sulfate attack and temperature[J]. Construction and Building Materials, 2021, 288: 123121.
[9] 喻建伟, 张朝阳, 孔祥明, 等. 内掺硅烷乳液憎水剂对混凝土性能的影响[J]. 硅酸盐学报, 2021, 49(2): 372-380.
YU J W, ZHANG C Y, KONG X M, et al. Influence of silane emulsion hydrophobic agent on concrete properties[J]. Journal of the Chinese Ceramic Society, 2021, 49(2): 372-380 (in Chinese).
[10] CHEN X, GENG Y J, LI S C, et al. Preparation of modified silane composite emulsion and its effect on surface properties of cement-based materials[J]. Coatings, 2021, 11(3): 272.
[11] ZHANG C Y, ZHANG S F, YU J W, et al. Water absorption behavior of hydrophobized concrete using silane emulsion as admixture[J]. Cement and Concrete Research, 2022, 154: 106738.
[12] 刘文娟. 氧化石墨烯改性混凝土的制备及力学性能和抗冻性能的研究[J]. 功能材料, 2022, 53(8): 8159-8164.
LIU W J. Preparation of graphene oxide modified concrete and research on mechanical properties and freezing resistance[J]. Journal of Functional Materials, 2022, 53(8): 8159-8164 (in Chinese).
[13] YANG S, JIA W, WANG Y G, et al. Hydroxylated graphene: a promising reinforcing nanofiller for nanoengineered cement composites[J]. ACS Omega, 2021, 6(45): 30465-30477.
[14] WANG T, JING L C, ZHU Q X, et al. Fabrication of architectural structured polydopamine-functionalized reduced graphene oxide/carbon nanotube/PEDOT: PSS nanocomposites as flexible transparent electrodes for OLEDs[J]. Applied Surface Science, 2020, 500: 143997.
[15] YADAV A, KUMAR R, CHOUDHARY H K, et al. Graphene-oxide coating for corrosion protection of iron particles in saline water[J]. Carbon, 2018, 140: 477-487.
[16] YADAV A, KUMAR R, PANDEY U P, et al. Role of oxygen functionalities of GO in corrosion protection of metallic Fe[J]. Carbon, 2021, 173: 350-363.
[17] ANWAR A, MOHAMMED B S, WAHAB M A, et al. Enhanced properties of cementitious composite tailored with graphene oxide nanomaterial: a review[J]. Developments in the Built Environment, 2020, 1: 100002.
[18] LI F P, LIU J S. An experimental investigation of hydration mechanism of cement with silicane[J]. Construction and Building Materials, 2018, 166: 684-693.
[19] JING G J, FENG H R, LI Q L, et al. Enhanced dispersion of graphene oxide in cement matrix with isolated-dispersion strategy[J]. Industrial & Engineering Chemistry Research, 2020, 59(21): 10221-10228.
[20] AVET F, SCRIVENER K. Effect of temperature on the water content of C-A-S-H in plain Portland and blended cements[J]. Cement and Concrete Research, 2020, 136: 106124.
[21] SAILLIO M, BAROGHEL-BOUNY V, PRADELLE S, et al. Effect of supplementary cementitious materials on carbonation of cement pastes[J]. Cement and Concrete Research, 2021, 142: 106358.
[22] ERICKSON K, ERNI R, LEE Z, et al. Determination of the local chemical structure of graphene oxide and reduced graphene oxide[J]. Advanced Materials, 2010, 22(40): 4467-4472.
[23] CHOUDHARY H K, ANUPAMA A V, KUMAR R, et al. Observation of phase transformations in cement during hydration[J]. Construction and Building Materials, 2015, 101: 122-129.
[24] CHEN B M, SHAO H Y, LI B, et al. Influence of silane on hydration characteristics and mechanical properties of cement paste[J]. Cement and Concrete Composites, 2020, 113: 103743.