耐久性

It is a new try to take the methods of rock and mineral analyses, such as polarizing microscope and X-ray diffraction, to the building concrete which can be regarded as amanmade rock and to evaluate the durability of a building construction as a supplementary means of physics, mechanics and computation check.

将混凝土看成一种人造的岩石，运用岩矿测试方法，对混凝土进行系统研究，并应用到建筑工程结构耐久性评价中，作为物理和结构验算的一种补充，是一种新的尝试。

Because of their excellent processable ilities, outstanding durability and mechanical properties of the coating film, they are extensively used to prepare high value paints or used in coating-modification.

反应性聚合物微凝胶是一种具有反应活性、分子内交联的高分子，它具有优良的施工性能，涂膜的力学性能及耐久性也十分优异，主要应用于制备高档涂料或对涂料进行改性。

The influence of cement parameters (including water and cement ratio, cement and sand ratio and cement fineness etc.)on the drying shrinkage of cement mortar were studied.

0前言水泥基材料处于低湿的环境下因水分散失导致体积收缩称为干缩，干缩是使水泥基材料产生裂缝从而导致耐久性下降的重要原因之一。

After formation of polysulfides,there are at least three reactions of cross-link,desulfuration and decomposition which are related to accelerators.

0引言Charles Goodyear于1839年发现生胶与硫磺一起加热后，生胶变得有弹性和耐久性，使橡胶具有宝贵的实用价值[1，2]。

The hydration heat model of concrete is established on the basis of Arrhenius law that is adopted to analyze the influence of temperature on heat evolution rate of early-age concrete.

混凝土结构的早龄期非荷载开裂是影响混凝土结构耐久性的主要原因之一[1]，所以在混凝土结构设计阶段对混凝土的早龄期抗开裂能力进行分析是十分重要的。

Meanwhile, the UFA high-strength concrete possesses good durability and creep property.

同时，耐久性良好，高性能混凝土也具有良好的徐变性能。

New box design with durable 0.5 inch (13 mm) paving skin Vertically-adjusting mold mount for precise leveling of mold to machine Telescoping end sections with 12 inches (305 mm) of width variation on each side are available Standard paving depth is zero to 24 inches (610 mm)Edge slump adjustment Hydraulic Vertical Hinged Sideplates, self-contained inside the mold for track clearance Split, pressure-compensated sideplates Folding side plate wings for transporting without removing Pivoting mold mounting beam to eliminate stress points Self-supported TA is hydraulically driven with 3.5 inch (89 mm) ACME screws for up to a six inch (152 mm) crown Front and rear top T-bar on mold for attaching accessories and structural integrity Inserts are bolted together with front and rear alignment pins for easy mold assembly New vibrator mounting tube attaches to T-bar on mold – Vertical vibrator lift – Rear lubrication system with grease zerks accessible from the work bridge New strike-off – Mounted on paver frame T-rail, independent of the mold – New modular design with wedge lock system for ease in changing widths – 10 inches (254 mm) of hydraulic height adjustment – Hydraulic crown adjustment Spreader plow mounted to paver frame T-rail, optional auger available Tamper bar optional

与耐久性的新的箱子设计铺精密水准测量的0.5英寸(13 mm)皮肤垂直调整的模子登上模子用机器制造挤撞与12英寸(305 mm)的末端部分在每边的宽度变异是可利用的标准铺的深度是零对24英寸(610 mm)边缘暴跌调整水力垂直的取决于的Sideplates，独立性在轨道清除分裂的模子里面，折叠运输的pressure-compensated sideplates旁边板材翼没有去除在轴上旋转的模子架置射线消灭重音点Self-supported TA水力驾驶与3.5英寸(89 mm)由六英寸(152 mm)冠决定的尖端螺丝在前后冠上在模子的T酒吧附有的辅助部件并且结构正直插入物与容易的模子汇编新的振荡器架置管随员T酒吧的定位销一起在前后被闩上在模子–垂直的振荡器推力与油膏zerks的–后方润滑系统容易接近从新工作的桥梁触击–在摊铺机框架足迹，模子的独立登上了与楔子锁系统的–新的模块设计在改变的宽度的舒适的– 10英寸(254 mm)水力高低调整–水力冠调整分布器犁登上了对摊铺机框架足迹，任意任意木钻可利用的堵塞器的酒吧

Combined with the climate feature in frigid zone,this paper states that decreasing broken board in construction,improving road surface frost resistance and assure good usage status is the important part of mixing proportion design of cement- concrete road surface .

本文结合寒带地区的气候特点，减少施工过程的断板率，提高路面抗冻耐久性，保证路面良好的使用状态是水泥砼路面配合比设计中的重点。

Some measurements to ensure the durability of R.C. structures in marine environment are presented.

提出了保证海洋环境下钢筋混凝土结构耐久性的措施。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐