查询词典 impermeability

It is shown from the parallel experimental results that the water tight fly ash concrete can substitute for the rubber water tight board, and the water tight fly ash concrete has more impermeability than the rubber board under the circumstances that permeability pressure of the tunnel is not very high.

在寒冷地区，隧道漏水还会使隧道路面冻结，顶部产生冰柱，影响隧道交通。对维护费用较高的隧道，诸如穿越含污染水层的供水隧道、可能由流沙在衬砌形成空隙的隧道、装有电气设备的隧道、以及要求美观的隧道如人行通道和地铁车站，都应采取防水措施。

Raise concrete impermeability to have line of two kinds of technologies normally, one kind is the impermeability; that the contact that cuts off infiltration and concrete through the 3rd medium will come to raise concrete another kind is the impermeability that will raise concrete through raising the close-grained sex of concrete oneself.

提高混凝土抗渗性通常有两种技术路线，一种是通过第三介质隔断渗透物和混凝土的接触来提高混凝土的抗渗性；另一种是通过提高混凝土自身的密实性来提高混凝土的抗渗性。

This article analyzes the molecular structure of silane and siloxane, intro- duces the method of selecting proper assistant to form a stable system using inorganic compound, silane and siloxane, and studies its performance and impermeability mechanics in concrete and cement mortar.

通过分析硅烷、硅氧烷的分子结构，选择合适的助剂，将无机化合物与硅烷、硅氧烷组成稳定的体系，研究其在混凝土及水泥砂浆中的性能与抗渗机理。

In this paper,the effect of factors such as fly ash,slag,water-reducing admixture and paste state of sur-face of concrete structure on impermeability and carbonation resistance of fair-faced concrete was analyzed using raw mate-rials applied in different construction section of Nanjing Changjiang River 3 Bridges.

本文以南京长江三桥不同标段清水混凝土为原材料，研究了粉煤灰、矿渣、减水剂、结构表面的浆体状况等对清水混凝土抗渗、抗碳化等耐久性的影响。

Are low-cost, easy to use, impermeability performance is good, green environmental protection and so on.

有低成本、使用方便、抗渗性能好、绿色环保等特点。

In addition,an improved method to measure the concrete impermeability and two ways to increase this impermeability are presented.

同时，提出测试混凝土抗渗性的改进方法和提高混凝土抗渗性的两种途径。

Under suitable addition of the fiber, impermeability of the concrete is greatly increased.

在适当的掺量条件下，对抗渗性能提高作用较明显。

The water/cement ratio and cement content are two main factors which reflect the impermeability of concrete.

水灰比和水泥用量是反映混凝土抗渗性的两个主要因素。

High impermeability: waterproof Po compact structure, impermeability is 3-5 times that of cement.

高抗渗性：防水宝结构致密，抗渗性是水泥的3-5倍。

This embodiment will illustrate that the present invention of the (poly trimethylene terephthalate) PTT laminated film performs better than its PET counterpart in terms of vapor impermeability, flexibility and warpage; its vapor impermeability is about equal to a TPT back sheet, while flexibility and warpage are better than TPT back sheet.

本实施例说明本发明聚对苯二甲酸丙二醇酯薄膜复合成的叠层膜的抗水汽渗透性、挠性和翘曲度优于多层聚对苯二甲酸乙二醇酯薄膜复合形成的叠层膜，抗水汽渗透性与TPT背板基本相当，挠性和翘曲度优于TPT背板。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。