通过在CW环氧树脂灌浆材料浆液中加入2种不同结构的非离子表面活性剂炔属二醇,制备了2种改性环氧树脂灌浆材料,并开展了黏度、表面张力、接触角、渗透性和浆材固化物力学强度的研究。结果表明:加入表面活性剂对浆液的黏度、浆材固结体抗压强度、抗拉强度无明显影响,但可以提高浆材的粘接强度和抗剪强度,降低浆液的表面张力和接触角,提高浆液在黏土中渗透性。其中,加入表面活性剂S1对浆液的粘接强度、拉伸剪切强度和在黏土中的浸润渗透高度提升更为显著,分别提高了23.6%、37.5%和109.4%。基于以上试验,初步探讨了表面活性剂提高浆液渗透性的机理。
Two types of modified epoxy resin grouting materials were formulated by incorporating different structured non-ionic surfactant alkynyl glycol into CW slurry. The viscosity, surface tension, contact angle, permeability, and mechanical strength of the cured slurry were investigated. Findings indicate that the addition of surface-active agents has no evident impact on viscosity, compressive strength, or tensile strength of the consolidated slurry. However,surface-active agents enhance the adhesive strength and shear strength, reduces surface tension and contact angle, and improves slurry permeability in clay. Addition of surfactant S1 significantly enhances adhesive strength, tensile shear strength, and permeability in clay by 23.6%, 37.5%, and 109.4%, respectively. Mechanisms underlying surfactant-induced improvements in slurry permeability are preliminarily discussed based on the tests.
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