查询词典 rust cement

Portland cement was used as cementations materials in developing foamed concrete, and some high alumina cement and lithium salt were added into Portland cement to adjust the time of setting in order to match the stable time of foam.

以普通硅酸盐水泥作基材制备泡沫混凝土，为了与泡沫的稳定时间相匹配，研究采用在普通水泥中掺入一定量的高铝水泥和碳酸锂来调整水泥浆的凝结时间。

Portland cement, Alumina cement, Low cement castable

硅酸盐水泥，矾土水泥，低水泥浇注料

ABSTRACT Chemical corrosion mechanism of concrete in Qinghai salt lake is briefly reviewed, and bittern resisting behavior of high alumina cement concrete, magnesium oxychloride cement concrete, alkali-activated slag concrete, ferrialuminate cement concrete and polymer impregnated concrete are also reported in the paper.

摘 要 简述了普通水泥混凝土在盐湖环境中的受腐蚀机理﹔报道了高铝水泥、氯氧镁水泥、铁铝酸盐水泥、碱矿渣和聚合物浸渍混凝土的抗盐卤腐蚀行为﹔对硅灰高密实混凝土的抗盐卤腐蚀机理进行了详细讨论，认为改善孔结构是获取混凝土高抗腐蚀性的有效途径。

Below 300 300 to 1200 Ordinary Portland or Portland blastfurnace Ordinary Portland or Portland blastfurnace Sulphate resisting Supersulphated Sulphate resisting or Supersulphated High alumina Sulphate resisting or Supersulphated High alumina Sulphate resisting or Supersulphated with adequate protective coating High alumina Minimum cement content (kg m-3) Type of cement Maximum size of aggregate 37.5 240 290 240 270 290 290 330 330 330 330 19.0 280 330 280 310 330 330 370 340 370 370 9.5 330 380 330 360 380 380 420 410 420 420 0.55 0.50 0.55 0.50 0.50 0.45 0.45 0.40 0.45 0.35 Maximum water-cement ratio 0.5 to 1.0 1.0 to 2.0 1200 to 2500 2500 to 5000 Over 2.0 Over 5000 Wear

这些气 穴通常由具有格外高能量的水蒸气所填充，与混凝土表面的反复接触导致形成凹陷和孔洞，即气蚀。既然高质混凝土也不能抵抗这种劣化，因此最好的补救是通过制造平滑水流来消除气蚀。在所有必须的地方，关键的面上衬以高抗气蚀性的材料。通常，混凝土抗腐蚀和磨损的能力随强度增加而提高。采用硬韧的集料可改善混凝土的抗磨损性。

Cement kiln is used for making of cement clinker and there are dry and wet methods to make cement.

水泥窑主要用于煅烧水泥熟料，分干法生产水泥窑和湿法生产水泥窑两大类。

In the late subglottic cement works and the reservoir area to the ground at the same level ground, with cement to the level of the mill after leveling it with a layer of cement overall connection is not solid, slightly used all foreign forces will crack b.

在工程后期门下水泥地面为了与库区地面处同一水平，用水泥进行水平找平但后磨的一层水泥与整体连接不牢，稍用外力就会裂开b。

And then the author explained that the worry was totally unnecessary by comparing the performance of vertical mill cement and ball mill cement produced by three foreign cement corporations and as well as the related concrete.

基于此，作者进行了国外三家水泥企业立磨水泥和球磨水泥的性能对比及其配置的混凝土性能对比，说明此种担忧是完全不必要的。

A new type cement commonly apply closed-circuit circulatory system, that cement production not only rely on closed-circuit grinding system as well as the election system to elect the cement powder, but also the dust collection system to close down.

新型水泥制备普遍采用闭路循环系统，闭路水泥生产不仅要靠粉磨系统把水泥磨出来，靠选粉系统把水泥选出来，还要靠收尘系统把水泥收下来。

Again, I maintain that we should use the flexural-tensile strain and the vertical shearing stress of the bottom of cover of the joint as the target for the design of the cover structure of asphalt on the old cement concrete. In addition, on the basis of much theoretical analysis, I preliminarily put forward to a designing methods to anchor the old cement concrete road by using dog irons made of iron bars and then covering it using asphalt concrete structure. Finally, through selecting the plan of the cover of the road to be experimented, and making a detailed introduction to the techniques of construction according to the result of theoretical analysis, I know that after anchoring the slabs close to each other with dog irons made of iron, and then cover them using asphalt cement concrete has an obvious effect on preventing and slowing down the reflection cracks in the bituminous concrete skin coat over the old road.

在大量分析的基础上提出了马钉锚固罩面结构中相邻两块水泥混凝土板接缝处的相对水平位移、相对垂直位移、接缝处沥青层底部的弯拉应变和剪应变的计算公式；再次，提出了采用接缝处罩面层底部的弯拉应变、垂直剪应变作为旧水泥混凝土路面上沥青混凝土罩面结构的设计指标，并在大量理论分析的基础上，初步提出了马钉锚固旧水泥混凝土板后沥青混凝土罩面结构的设计方法；最后，根据理论分析的结果，选定试验路的罩面方案，并对其施工工艺进行了详细的介绍，表明采用钢筋马钉锚固相邻混凝土板后，再进行沥青混凝土罩面的方法在防止或减缓罩面层反射裂缝方面具有明显的效果。

The oid in the cement as seen in both the kyphoplasty sections (Figure 5) is caused by the filling deice, which is left in place in the caity during the initial curing phase of the cement to preent cement from leaking back into the working cannulas.

在两个后凸成形术组中，都可以见到由填充装置引起的骨水泥间隙，这是在骨水泥凝固的初始阶段，为了防止骨水泥渗漏进工作套管，而适当地遗留在空腔中的。

The two-acre Dunbar Community Garden in Little Rock has served as a model for several years.

几年来，坐落于小石城，占地两英亩的邓巴社区菜园树立了一个标杆。

Jerry points to the jacket hanging in the bathroom. It's ruined, and unwearable What?

杰瑞指着洗手间里挂着的夹克，毁了，不能穿了）什么？