凝石胶凝材料作为人工鱼礁材料的可行性研究I——凝石供试体的抗压强度、浸泡海水的pH及其与水泥供试体的比较

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28d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30d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60d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。

The feasibility of congealing stone used as artificial reef materials I --compressive strength, and pH in immersed seawater reference to cement

The compressive made of mine tailings （ ratio to cement （ ratio of water to strength, and pH values in immersed seawater were examined in congealing stones of water to mine tailings =0.60, S1 ; 0.55, S2; 0.49, S3 ; and 0.44, S4） reference cement =0.60, C1;0.55, C2; 0.49, C3; and 0.44, C4） to explore the feasibility of the congealing stone as artificial reef materials. freshwater were found higher in the congealing The results showed that 1 ）the intensities in 28 day conservation in stone groups （S1,S2, S3, S4） than those in the concrete groups except for in group S4. The intensity of the module was shown to be increased first and then decreased with the in- crease in water cement ratio. Apart from C4, there were higher intensities in the concrete groups than those in the congealing stone groups significantly, with the procedure of being immersed in the sea water. 2） the intensities in 60 day conservation in seawater were found to be higher than those in the cement group while the intensities in 30 day conservation in seawater, there were except in S4 and C4. The pH values of S. 84, 8.87, 9.10,and 8.95 were found in the congealing stone groups immersed in the sea water, and the pH values of 10.42, 10.44, 10.80, and 10.72 in the cement group immersed in the sea water, lower than in the concrete group with the same water cement ratio. From the above rsults concluded that the congealing stones can be used as the artificial reef materials, with superior to concrete.