试验结果表明C30混凝土使用聚羧酸可以降低混凝土成本，提高混凝土的耐久性。
The result showed using polycarboxylate acid could reduce the cost of the concrete and elevate the concrete durability.
ECC 的施工成本比标准混凝土高得多，所以从经济上讲你们的建议可能不合理。
Construction costs for ECC are much higher than for standard concrete, so your proposal is probably not justifiable on economic grounds.
我们的设计现在几乎等同于建立在安装成本基础之上的钢筋混凝土结构。
We're very close right now to parity with concrete and steel on an installed-cost basis.
应用推荐