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虽然混凝土价廉,耐腐蚀、耐热,生产成本低,但要用它来制作弹簧,却似乎是不可能的。因为混凝土是抗压力强,抗拉力弱,用于建筑物、道路和排水管时,如果不用钢筋、纤维来加固,那么,即使受到横向荷载,也会逐渐断裂。英国一家公司研制出了新颖的混凝土,并已用它制造出了具有抗拉、抗压强度的弹簧,取名“尼姆斯”(NIMS)。在这种改性混凝土中,加进了能使浆料填补大孔眼的有机化学物质。浇注成所需要的形状后,在潮湿的环境中固化一星期再干
Although concrete is inexpensive, corrosion-resistant, heat-resistant, and low-cost, it does not seem possible to use it to make springs. Because concrete is resistant to pressure and weak in tension, it is gradually broken even if it is subjected to lateral loads if it is used for reinforcement of buildings, roads and drainage pipes without reinforcing steel or fibers. A British company has developed a new type of concrete and has used it to produce a spring with tensile strength and compressive strength, named “NIMS”. In this modified concrete, organic chemicals that can fill the pores of the slurry are added. After pouring into the desired shape, cure in a moist environment for a week and then dry