矾石

The evaporating experimental results show that, hydromagnesite is first separated with the lake-water being concentrated, and then halite, thenardite, bloedite, picromerite, epsomite, sylvite and carnallite precipitated successively.

蒸发实验的结果表明：首先析出水菱镁矿，随着湖水继续浓缩进一步析出石盐、无水芒硝、白钠镁矾、软钾镁矾、泻利盐、钾石盐和光卤石。

This paper presents the experimental data of metastable phase equilibrium of Na+, K+, Mg2+∥Cl-, SO2-4-H2O quinary system at 35 ℃, from which the metastable phase diagram is drawn. It consists of nine regions of crystallization saturated with sodium chloride, potassium chloride, glasserite(3K2SO4*Na2SO4), leonite(K2SO4*MgSO4*4H2O), kainite(KCl*MgSO4*2.75H2O), thenardite(Na2SO4), astrankit(MgSO4*Na2SO4*4H2O), carnallite(KCl* MgCl2*6H2O), magnesium sulfate hexahydrite(MgSO4*6H2O) and bischofit(MgCl2*6H2O).

研究得出（Na+， K+， Mg2+∥Cl-， SO2-4-H2O）五元体系35 ℃时的介稳溶解度数据，绘制了该体系35 ℃的介稳相图，共有9个为氯化钠所饱和的结晶区域：氯化钾、钾芒硝（3K2SO4*Na2SO4）、钾镁矾（K2SO4*MgSO4*4H2O）、钾盐镁矾（KCl*MgSO4*2.75H2O）、光卤石（KCl*MgCl2*6H2O）、白钠镁矾（Na2SO4*MgSO4*4H2O）、硫酸钠、六水硫酸镁（MgSO4*6H2O）和水氯镁石（MgCl2*6H2O）。

The major hydrate is CSH gel under this condition. Curing of mortar in water increases the hydration degree of the binder with or without thermal proceeding. In addition to more CSH gels, some ettringite is formed.

试样脱模后在60 ℃蒸养6 h将阻碍无水石膏向二水石膏转化，但促进粉煤灰的火山灰反应，此时主要水化产物是CSH凝胶；继续水养护进一步促进胶结材的水化，除生成较多CSH凝胶外，还有部分钙矾石生成。

In this paper, the marine soft soil is mixed with 10% cement added with 0.5% NaOH and 0.5% Na2CO3 separately, which form two types of new cement-soils. Comparing with the undisturbed soil and the 20% cement-soil results in that the alkalescence additive can contribute to generate a large number of needle-like, rod-like or fibriform hydrate calcium silicate crystals. The hydrate calcium silicate crystals can inhibit the generation of calcic alum crystal which would bring expansive action. At the mean time, it can separate out hydrate calcium. The hydrate calcium silicate crystals and hydrate calcium constitute the filling and inclusions together among soil particles and on the surface of soil particles, which cut down the interstices of cement soil obviously. Therefore, the soil mass can be reinforced and the intensity can be improved.

现场试验中将海积软土与分别掺入0.5%NaOH和0.5%Na2CO3的10%水泥就地搅拌，形成两种新型水泥土，在与原状土及20%纯水泥土进行比较后，发现碱性外掺剂可以促使生成大量针状、棒状或纤维状水化硅酸钙晶体，抑制了能产生膨胀作用的钙矾石的生成，同时，有Ca2晶体析出，它们共同构成土颗粒间和土颗粒表面的充填物和包裹物，使水泥固化土的孔隙明显减小，密度和强度得到极大提高。

The hydrates of plain CAS glass are mainly gehlenite hydrate and CSH gel:and the preponderant hydrates or the mixture of CAS glass and gypsum are ettringite and CSH gel.

纯CAS玻璃相的水化产物主要为水化钙铝黄长石晶体和CSH凝胶：而掺有适量石膏的CAS玻璃相的水化产物则为钙矾石晶体和CSH凝胶。

Ettringite is not stable in concrete, however,it always tends to recrystallize.

文章摘要：钙矾石是水泥重要的水化产物之一，也是铝酸盐类膨胀剂产生膨胀的主要物质，但它在混凝土中并不稳定，容易发生重结晶。

In conclusion, rubber powder prevents gypsum and ettringite from cubical dilatation, which plays a role as soft elastic body. At the same time, rubber powder can ease cubical dilatation stress, so crack occurrence and development are decreased, and rubberized cement-soil salification erosion resistence is improved.

橡胶粉阻碍了石膏、钙矾石产生的体积膨胀对试件的影响，起到了软性弹性体的作用，缓和体积膨胀应力，减少内部裂纹的发生与发展，提高了水泥土的抗盐蚀性能。

The adsorption behaviour of chemically different superplasticizers, such as melamine formaldehyde sulphite polycondensate,β-naphthalene sulfonate formaldehyde polycondensate and polycarboxylate, on early hydrating cement phases was studied. For this purpose, pure ettringite AF(subscript t, monosulfate AF(subscript m and syngenite were prepared. The adsorbed amount and zeta potential of early hydration products were measured.

制备了钙矾石AF(下标 t、单硫型硫铝酸钙AF(下标 m和钾长石类单矿物，并研究了三聚氰胺磺酸盐甲醛缩聚物、β-萘磺酸盐甲醛缩合物及聚发酸盐等几种化学成分不同的超塑化剂在其早期水化颗粒表面上的吸附行为。

With deep water and wide bay area,the east wing Dapeng Bay has the advantages of long coastline and enough anchorage.

认为西片大鹏湾虽是水深港阔，具有深水岸线长和锚地充足的优势，但风浪较大，港区陆域狭窄，位置偏离珠江河网区；而西片伶仃洋东岸，地处矾石水道及东部浅滩区，是伶仃洋淤积量最小的区域，沿岸潮滩和陆域宽广，建港用地充足，而且湾口有众多岛屿和浅滩屏障，风浪小，尤其是位于河海结合部，具有&水转水&的集疏运优势，总体自然条件西片优于东片。

AFt was extracted from cement paste containing sulphur - fixed ash using glycol and methanol (mixing ratio =1:3) as solvent, and its content was measured by back titration method.

选用1：3乙二醇-甲醇溶剂以相当高的选择性从掺固硫渣的水泥水化浆体中萃取钙矾石并采用返滴定法测定其含量。

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。