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用尾矿等废弃物制成的凝石胶凝材料制作供试体,在实验室条件下测定其抗压强度和浸泡海水的pH值,并与水泥供试体进行比较,探讨用凝石胶凝材料作为人工鱼礁造礁材料的可行性。结果表明:1)在淡水中养护28 d后,随着水灰比的增加,凝石供试体的抗压强度呈现先升高后降低的趋势,而水泥供试体的抗压强度则呈现逐渐降低的趋势,其中水灰比为0.60、0.55、0.49、0.44的凝石供试体(S1、S2、S3、S4)和水泥供试体(C1、C2、C3、C4)的抗压强度,除S4组显著低于C4组外(P<0.05),其余同水灰比的凝石供试体的抗压强度均显著高于水泥供试体(P<0.05)。2)在海水中浸泡30 d后,除S4组与C4组的抗压强度相等之外,其余同水灰比的凝石供试体的抗压强度均显著高于水泥供试体(P<0.05);在海水中浸泡60 d后,同水灰比的凝石供试体的抗压强度均显著高于水泥供试体(P<0.05)。3)浸泡4种凝石供试体的海水平均pH值分别为8.84、8.87、9.10、8.95,浸泡4种水泥供试体的海水平均pH值分别为10.42、10.44、10.80、10.72,凝石组海水的pH值均显著低于水泥组(P<0.05)。试验表明,以凝石胶凝材料作为人工鱼礁材料在抗压强度和对海水pH的影响方面均优于水泥材料。
Using tailings and other wastes made of coagulation material coagulation material for the test, measured under laboratory conditions, its compressive strength and pH value of soaking seawater, and compared with the cement for the test to explore the use of gel glue The feasibility of using coagulation material as artificial reef reef material. The results show that: 1) After curing for 28 d in freshwater, the compressive strength of the test specimen increases first and then decreases with the increase of the water-cement ratio, while the compressive strength of the test specimen (S1, S2, S3, S4) and compressive strength of cement test specimens (C1, C2, C3, C4) with water cement ratio of 0.60,0.55,0.49,0.44 (P <0.05). The compressive strength of other coagulant specimens with water-cement ratio were significantly higher than that of cement specimens (P <0.05). 2) After soaking for 30 days in seawater, the compressive strength of other coagulant specimens with the same water-cement ratio was significantly higher than that of the cement specimens except for the compressive strength of S4 and C4 (P < 0.05). After immersed in seawater for 60 days, the compressive strength of the test specimens with the same ratio of water to cement was significantly higher than that of the test specimens with cement (P <0.05). 3) The average pH values of seawater immersed in four kinds of coagulants were 8.84,8.87,9.10 and 8.95 respectively. The average pH value of seawater soaked in four kinds of cement samples was 10.42,10.44,10.80 and 10.72, The seawater pH values were significantly lower than the cement group (P <0.05). Experiments show that the use of coagulant as an artificial reef material is superior to the cement material in compressive strength and the impact on seawater pH.