1) secondary free-lime
二次游离氧化钙
1.
The conditions of measuring the content of secondary free-lime have been studied on the basis of common methods of testing free lime content in cement clinker in the paper.
本文在测定水泥熟料中游离氧化钙常用方法的基础上研究了测定二次游离氧化钙的条件,并对甘油-乙醇法和乙二醇-乙醇法测定二次游离氧化钙的效果作了比较,结果表明采用乙二醇-乙醇法测定二次游离氧化钙较为灵敏。
2) free CaO
游离氧化钙
1.
In this paper, the hydration kinetic process of free CaO in system containing high calcium fly ashH 2O has been studied under different temperatures.
试验证明 ,细磨可以提高高钙灰中游离氧化钙的水化速率 ,进而改善其膨胀性能 。
3) free-CaO
游离氧化钙
1.
Results show that the crush value,free-CaO content,invariability and innocuousness of the slag are all in conformity to the national standards and related trade criterion when the slag is put in storage for 12 months.
结果表明,当钢渣的存放期为12个月时,其压碎值、游离氧化钙含量、安定性、有害性试验均满足国家及行业有关标准要求,因此存放12个月以上的钢渣可以作为高速公路路基材料。
4) free lime
游离氧化钙
1.
However,the free lime content of the fly ash is higher.
上海石洞口第二电厂拟建设粉煤灰分选系统生产国标等级灰,但其粉煤灰的游离氧化钙偏高。
2.
Hydration of free lime often leads to a volumetric expansion of hardened cement pastes.
硬化水泥浆体由于水泥中游离氧化钙水化常会导致体积膨胀。
3.
The effects of various mineral additives such as fly ash, blast furnace slag and silica fume on the action of free lime in cement, and the mechanism of their effects on the cement soundness and expansion behaviors of HCP have been studied and discussed.
通过实验测定了水泥的安定性和水泥石的膨胀率、膨胀应力，分析探讨了粉煤灰、矿渣、硅灰等矿物外加剂与游离氧化钙之间的相互作用机制及其对水泥石膨胀行为的影响机理。
5) f-CaO
游离氧化钙
1.
The main cause leading to the disqualification of cement soundness in hardened concrete is excessive f-CaO or magnesia in the cement mixture.
在已硬化砼中水泥安定性不合格的主要原因是水泥熟料矿物中含有过多游离氧化钙或游离氧化镁 。
2.
In the cement production process it is hard to develop an accurate mathematical model for both f-CaO and stack bed thickness which characterize the key technical indices in the cooling process with a grate cooler.
针对水泥生产过程中篦冷机熟料冷却过程关键工艺指标的游离氧化钙和料层厚度难以建立精确数学模型,且采用常规的控制方法难以进行有效控制的难题,将案例推理和常规控制相结合,提出了基于案例推理的篦冷机熟料冷却过程工艺指标优化控制方法。
6) free calcium oxide
游离氧化钙
1.
Approach and evaluation of measuring methods on the content of free calcium oxide in cement clinkers;
水泥矿物游离氧化钙含量测定方法的评价及探讨
2.
By using scanning electron microscope(SEM) the hydrate of highly free calcium oxide(f CaO)cements is studied,and the distribution and crystalline characteristics of calcium hydroxide in cement are investigated and the different boundary characteristics between calcium hydroxide with CSH at early hydration stage and later stage as well.
运用扫描电子显微镜 (SEM)研究了高游离氧化钙 (f- Ca O)水泥的水化及其在水泥石中氢氧化钙的分布和显微结构特征。
3.
and the rescarch results of the expansion of free calcium oxide in steel slag after chemical reaction which is the biggest problem in steel slag application worried about by road engineers, the construction technological specification of the application of graded steel slag mixture as pavement base materials was developed.
通过分析安钢转炉钢渣的力学性能，以及道路工程师在钢渣应用中最担心的问题──游离氧化钙反应后的膨胀问题的研究及其结果，提出了使用级配钢渣混合料作为道路基层材料加以应用在施工中的技术要求。
补充资料：氧化钙
| 氧化钙 calcium oxide 化学式CaO，白色粉末，不纯者为灰白色。俗称石灰或生石灰。熔点2614℃，沸点2850℃，相对密度3.25～3.38。氧化钙为碱性氧化物，溶于水形成氢氧化钙。氧化钙在空气中逐渐吸收二氧化碳，转变为碳酸钙。碳酸钙在加热时生成氧化钙 ，大规模生产都用石灰石做原料 ，石灰窑的温度约1000℃，反应产生的二氧化碳气体不断逸出，使反应进行得很完全。在空气中和高温下加热氧化钙，会放出强烈的白光，称为石灰光，被利用来制造高强弧光灯。氧化钙大量用于建筑业，在1∶3(体积比)的熟石灰和砂子的混合物中加水制成的泥浆称为灰泥，用于砌砖等。在高温下，氧化钙和酸性氧化物发生反应： CaO + SiO2＝CaSiO3 3CaO+P2O5=Ca3(PO4)2 常利用上述反应除去氧化后生成的酸性氧化物，同时也可以与硫化亚铁作用除去钢水中过量的硫：高温  |
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参考词条