The search for construction materials that contribute to 5G signal transmission is important for the development of modern communication technologies. In this paper, the mechanical properties of white Portland cement (WPC) paste mixed with basalt fiber (BF) were analyzed and its electromagnetic properties were fully investigated. First, the fluidity and strength of WPC pastes with different BF contents were tested. Subsequently, the electromagnetic parameters of WPC paste samples were tested in the frequency band of 3.94 GHz–5.99 GHz, and their electromagnetic transmission properties were calculated. Finally, the mechanism of BF affecting the strength and electromagnetic transmission performance of WPC pastes was profiled using scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP). The results show that BF can reduce the fluidity of WPC pastes. With the increase of BF doping, the strength of WPC paste rises and then decreases, and reaches the maximum strength when the volume content of BF is 0.6%. With the increase of BF content, the electromagnetic wave reflection rate of WPC paste decreases, but the absorption and transmission rate increases. The bridging effect of BF, etc. improves the strength of the paste. In WPC pastes, with the increase of BF doping, the increase of electromagnetic wave absorption rate is smaller than the decrease of reflection rate, which leads to the improvement of electromagnetic transmission performance.

寻找有助于5G信号传输的建筑材料对于现代通信技术的发展具有重要意义。在本文中，分析了混合玄武岩纤维（BF）的白色硅酸盐水泥（WPC）浆体的力学性能，并对其电磁性能进行了全面研究。首先，测试了不同BF含量的WPC浆料的流动性和强度。随后，在3.94 GHz~5.99 GHz频段测试了WPC浆料样品的电磁参数，并计算了它们的电磁传输特性。最后，使用扫描电子显微镜 (SEM) 和压汞法 (MIP) 分析了 BF 影响 WPC 浆料强度和电磁传输性能的机制。结果表明，BF 会降低 WPC 浆料的流动性。随着BF掺杂量的增加，WPC浆体强度先上升后下降，当BF体积含量为0.6%时达到最大强度。随着BF含量的增加，WPC浆料的电磁波反射率降低，但吸收和透射率增加。BF等的架桥作用提高了膏体的强度。在WPC浆料中，随着BF掺杂的增加，电磁波吸收率的增加小于反射率的降低，从而导致电磁传输性能的提高。随着BF含量的增加，WPC浆料的电磁波反射率降低，但吸收和透射率增加。BF等的架桥作用提高了膏体的强度。在WPC浆料中，随着BF掺杂的增加，电磁波吸收率的增加小于反射率的降低，从而导致电磁传输性能的提高。随着BF含量的增加，WPC浆料的电磁波反射率降低，但吸收和透射率增加。BF等的架桥作用提高了膏体的强度。在WPC浆料中，随着BF掺杂的增加，电磁波吸收率的增加小于反射率的降低，从而导致电磁传输性能的提高。