查询词典 alumina cement

Results show that C_(2)AS in high-alumina cement with CACA_(2)C_(2)AS system can be transformed into the Q phase when adding MgO and abundant CaO after calcined at high temperature.

结果表明：高铝水泥系统中的C2AS，在加入MgO和系统补钙的条件下，经过高温煅烧能够转化为Q相，高铝水泥系统CA 二铝酸一钙(CA2) C2AS变化为Q相CA C12A7.Q相CA C12A7的烧成温度为1 260~1 300 ℃，保温时间为30~60 min。

In the high alumina cement , dicalcium aluminate silicate is transformed into Q phase.

将高铝水泥中的惰性成分硅铝酸二钙(C2AS)转化为水化活性良好的Q相，组成Q相铝酸一钙七铝酸十二钙(C12A7)高铝水泥系统，对此系统的烧成条件进行研究。

The effects of limestone addition on the strength of alumina cement and the hydration mechanism have been investigated.

研究石灰石作为混合材对铝水泥强度的影响，探讨其水化作用机理。

Used to produce alumina cement, abrasive materials, ceramic industry, as well as a variety of aluminum compounds.

6制造矾土水泥，研磨材料，陶瓷工业以及化学工业可制铝的各种化合物。

Limestone powder was used as a filler to modify high alumina cement .

以CaCO3微粉作改性剂对高铝水泥进行改性。

Linear change after baking of the gunning mix which takes clay and bauxite as aggregates and high alumina cement as binder can be obviously reduced by adding 30% alumina fine powder and 5% kyanite.

在以焦宝石、矾上熟料为基本骨料，以高铝水泥等为复合结合剂的喷补料中加入3％的Al2O3超细粉或5％的蓝晶石粉都有利于降低喷补层的烧后线变化。

The mullite is M60 mullite containing Al2O3 not less than 60 wt%, the cordierite contains Al2O3 33-35 wt% and MgO 13-15 wt%, the micro silica powder contains SiO2 not less than 92 wt%, the micro active alumina powder contains Al2O3 more than 98 wt%, the high alumina cement contains Al2O3 not less than 46 wt%, CaO not more than 40 wt% and SiO2 not more than 10 wt%.

其中，所述的莫来石为M60莫来石，其化学成分为：Al 2 O 3 ≥60％；堇青石化学成分为：Al 2 O 3 33～35％，MgO 13～15％；硅微粉化学成分为：SiO 2 ≥92％；活性氧化铝微粉化学成分为：Al 2 O 3 ＞98％；高铝水泥化学成分为：Al 2 O 3 ≥46％，CaO≤40％，SiO 2 ≤10％。

Using grog,haydite as aggregate,high alumina cement as binder,and using compound early strength agent,the high strength haydite castable material produced successfully.

以焦宝石、陶粒为骨料，高铝水泥作结合剂及采用复合早强剂，研制成功高强陶粒浇注料。

Polymer-concrete ; emulsive resin ; alumina cement ; epoxy resin

聚合物混凝土；乳化树脂；钒土水泥；环氧树脂

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。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。