1. The high compressive strength is obtained when the modulus of the activator viz., molar ratio of SiO2/Na2O is 1.5, and the proper content of this activator evaluated by the amount of Na2O to the high-calcium fly is 10%. The compressive strength of these samples is 63.4 MPa when they is cured at 75 oC for 8 hours flowed by curing at 23 oC for 28 days. The main gels of geopolymer and calcium silicate hydrate, and Gismondine co-exist and bond some remaining unreacted fly ash spheres.
结果表明：复合碱激发剂适宜的模数M =n(SiO2)/n(Na2O)为1.5，掺量为Na2O当量10％；适宜养护条件为，75oC养护8h，然后在23oC室温养护至所需龄期，其28d抗压强度达63.4MPa；碱激发高钙粉煤灰同时生成地聚合物凝胶和水化硅酸钙凝胶，并有类沸石矿物生成，反应产物与未反应的粉煤灰颗粒胶结成较为密实的高钙粉煤灰地聚合物。
2. 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。
3. The results show that increasing amount of gypsum can improve the hydration rate, increase the formation amount of AFt in the early hydration period and benefit to the improvement of early strength. The hydrate of belite-calcium barium sulphoaluminate cement is the same with Portland cement, but the AFt content is increased and the Ca2 content is reduced.
结果表明：适当增加石膏掺量可使贝利特－硫铝酸钡钙水泥的水化速度加快，增加钙矾石在水化早期的形成数量，有利于水泥早期强度的提高；贝利特－硫铝酸钡钙水泥的水化产物与硅酸盐水泥相同，但其钙矾石的含量增多，氢氧化钙的含量降低。
4. The study also shows that calcium silicate hydrate gel, analcite and hydrated calcium alumino-silicate are the major hydration products of the cement.
碱磷渣水泥的主要水化产物是水化硅酸钙、方沸石、水化硅铝酸钙。
5. Through the relationship between sodium chloride and target crystal: calcium hypochlorite hydrate, the recycle of mother liquid, the principle of reactive crystallization of sodium-process bleaching power was analyzed.
从氯化钠与目标晶体水合次氢酸钙间的关系、母液循环等角度分析了钠法漂粉精工艺的反应结晶原理。
6. calcium hydrate
6. Synthesis condition and method of hexagonal calcium aluminate hydrate are described. The synthetic hexagonal calcium aluminate hydrate is characterized through chemical, TG-DTA and XRD analysis.
叙述了六方水合铝酸钙的合成条件和方法，并通过化学分析、TG-DTA分析和XRD分析对所合成的六方水合铝酸钙进行了表征。
7. Comparing it with CaCO_3, A1 (OH) _3, Calcium aluminate hydrate has an excellent synthetical ability.
与CaCO3、Al（OH）3相比，铝酸钙有很好的综合性能，是一种很有发展前途的阻燃剂。
8. Property study of hexagonal calcium aluminate hydrate
六方水合铝酸钙的性质研究
9. Calcium nitrate 4 hydrate and diammonium hydrogen orthophosphate are selected as initial materials; needle like carbonate containing hydroxyapatite crystals are synthesized by homogeneous precipitation method with urea is used as additive.
选用可溶性的硝酸钙和磷酸氢二铵，在尿素用作添加剂的条件下用均相沉淀法合成了含部分碳酸根的针状羟基磷灰石晶体。
10. Calcium silicate hydrate (CSH) materials of varied calcium to silicon (Ca/Si) ratios were prepared by hydrothermal synthesis at 80 ℃, with calcium oxide and micro-silicon employed.
以氧化钙、硅灰为原料，在80℃水热条件下，能合成不同钙硅比的水化硅酸钙（CSH），用X射线粉晶衍射（XRD）鉴定表明产物都为凝胶相。
11. The experimental condition for Ca 2 + activating porcin prothrombin was established. Research of Calcium Sulfite on Activating Slag Hydration under the Calcium Hydrate Alkali Condition
使Ca2+激活猪凝血酶原的实验条件得以确立。在Ca（OH）2碱性条件下亚硫酸钙对矿渣的激发作用研究
12. The results indicate that the formation of calcium silicate hydrate is difficult at normal pressure.
结果表明，在常压下除硅，难以形成水合硅酸钙。
13. In this paper the presentations, the applications of Magnesium Hydroxide Sulfate Hydrate Whisker and calcium sulfate whisker on flame resistance and fireproofing are presented.
本文介绍了水合碱式硫酸镁晶须和硫酸钙晶须在阻燃防火中的应用。
14. calcium hydrate的解释
14. It was favourable for the formation with increasing the temperature, pressure and time of reaction. The formation of calcium—silicate hydrate was inhabited by added A1_2O_3. But if Al_2O_3 was in the diomite, the ill effect was not found.
本文还探讨了Al_2O_3对水化硅酸钙形成的影响，结果表明：Al_2O_3明显地阻碍了水化硅酸钙的形成，但如存在于硅藻土的伴生矿物中，则没有阻碍作用。
15. Disclosed are concrete and fiber cement formulations and products comprising low-density calcium silicate hydrate, and methods for producing these formulations and products.
本发明公开了一种含有低密度水合硅酸钙的混凝土和纤维水泥配制剂以及制造这些配制剂和产品的方法。
16.
16. The order of affecting the formation of calcium aluminate hydrate is as follows: temperature≈concentration of caustic soda＞CaO/Al2O3＞time.
实验结果表明，影响水合铝酸钙形成因素的大小顺序为：温度≈碱浓度＞CaO/Al2O3＞时间。
17. Fly ash; calcium silicate hydrate gel; pore structure
粉煤灰；水化硅酸钙凝胶；孔结构
18. calcium hydrate是什么意思
18. Modulation of Magnesium Tartrate on Crystal Growth of Hydrate Calcium Oxalates
酒石酸镁对水合草酸钙晶体生长的调控作用
19. Light calcium carbonate, ACC, nanometer superfine calcium carbonate, magnesium carbonate, trihydrate alumina, silica white, strontium carbonate, barium carbonate, potassium carbonate, rubberlith, rongalite, permanent white, lemery, microspheroidal catalyst, magnesium hydrate, bluestone, nickel salt, sodium molybdate, sodium chloride, potassium chloride, calcium chloride, sodium fluoride, cryolite, iron oxide red, lithium hydroxide, zirconium hydroxide, calcium phosphate, sulfur, etc.
轻质碳酸钙、活性碳酸钙、纳米级超细碳酸钙、碳酸镁、氢氧化铝、白炭黑、碳酸锶、碳酸钡、碳酸钾、立德粉、保险粉、硫酸钡、硫酸钾、微球催化剂、氢氧化镁、硫酸铜、硫酸镍、镍酸铵、钼酸钠、氯化钠、氯化钾、氯化钙、氟化钠、冰晶石、氧化铁红、氢氧化锂、氢氧化镍、氢氧化锆、磷酸钙、硫磺等。
20. Calcium silicate hydrate, ettringite and calcium hydroxide are formed at the early stage of hydration of two pastes.
2种水泥浆体水化反应初期有水化硅酸钙、钙矾石及氢氧化钙形成；