In order to prevent such shrinkage, a delayed-expansion cement was studied and produced.
为了防止这种收缩，研制了延迟性膨胀水泥。
The expansion mechanism of hardened cement paste with double expansion sources of entringite and brucite was studied by using theory of fractal geometry and viscoelasticity.
应用分形学与粘弹性力学对含钙矾石和水镁石膨胀源的水泥硬化浆体的膨胀机理进行了研究与分析。
Addition of silica fume into the mix will result in increasing the workability and strength of cement mortar and decreasing the expansion.
同时掺加硅灰还能够提高掺玻璃纤维高钙粉煤灰水泥砂浆的和易性和强度，并减小其膨胀。
The influences of curing temperature and alkali contents of cement on expansion of mortar bars are investigated.
研究了养护温度和水泥碱含量（质量分数，下同）与硅质集料砂浆试样膨胀的关系。
USES material not qualified. Such as sand, stone, aggregate quality unqualified; In addition, mostly because cement volume expansion rate is too large (stability serious adverse).
所用材料不合格。如砂、石、集料质量不合格；除此之外，大多数是因为水泥体积膨胀率太大(安定性严重不良)。
The mechanism of thermal expansion of hydraulic cement paste is also re searched with DSC/TG and XRD methods.
借助于DSC/TG和XRD测试手段，对水泥石的热膨胀性能变化规律进行了机理分析。
The gypsum formation causes the expansion of materials based on cement exposed to sulfate bearing solutions.
石膏的形成导致硫酸盐侵蚀水泥基材料产生膨胀开裂。
The long-term expansion potential due to AAR of alkaline cement system is discussed with measuring the change of AAR expansion ratio of mortar at different age.
通过测定砂浆经不同养护阶段的碱集料反应膨胀率变化，探讨了碱性水泥系统碱集料反应的长期膨胀潜力。
In order to reduce the expansion stress resulting from cement's expansion and prolong the life-span of porcelain insulator, a thin asphalt buffer layer is coated between the porcelain and the cement.
为了降低水泥膨胀所引起的膨胀应力，延长瓷绝缘子的使用寿命，在胶装时一般在瓷体和水泥之间涂一层沥青缓冲层。
The influences of alkali curing solutions and cement aggregate ratios on expansion of mortar bars were investigated.
研究了养护碱溶液性质和胶砂比与硅质集料砂浆试样膨胀的关系。
Cast iron is different from cement thermal expansion coefficient, will transform, separate with long hours, over - towing force action descend turn over the turn on.
铸铁与水泥热膨胀系数不同，长时间就会变形、分离，在外力作用下翻开。
Now, its application field is on a continuous expansion with an exception of cement industry, suggesting a broad application prospect.
目前，该机除水泥工业外，应用领域在不断扩大，具有广阔的应用前景。
Early this month, Guangdong Province ordered a halt to any further expansion of three major polluting industries, including the cement, ceramics and plate-glass production facilities, in the PRD.
本月初，广东省叫停了珠三角地区的水泥、陶瓷和平板玻璃这三个重污染行业的扩张。
Test investigation on the chemical shrinkage or expansion of alkali-activated cementing materials and water-cement were carried out in this paper, in which water-cement was as control sample.
本文对碱激胶凝材料与水-水泥体系的化学收缩或膨胀进行了试验研究，其中以水-水泥体系为对比样。
This paper investigated expansion property that common Portland cement was as basic body and cement Q phase - C2S - C4AF - C12A7 as expansion age nt with a little addition of gypsum.
采用普通硅酸盐水泥作为基体、Q相-C2S -C4AF - C 12a7水泥作为膨胀剂、加入少量石膏的条件下进行试验研究。
Results show that the modified cement with good durability, small expansion and low alkality can be made by use of gypsum and zeolite modifying alumina cement.
结果表明：以石膏和沸石对高铝水泥改性，可配制出耐久性良好、具有微膨胀性的低碱度改性水泥。
The mechanism of expansion of the cement was al…
最后，讨论了水泥石膨胀的产生。
In this paper, the effects of calcination temperature, holding time and content of dolomite on the strength and expansion rate of cement mixed with calcined dolomite are investigated.
研究了白云石的煅烧温度、保温时间以及掺量等对水泥物理性能和膨胀行为的影响规律。
Fracture energy, strength, shrinkage and expansion properties of cement mortar are studied under different moisture content and surface tension solutions.
以水泥砂浆为研究对象，对不同水分含量及不同表面张力溶液下砂浆的断裂能、强度及收缩膨胀性能进行了研究。
In this paper, the test method of the linear thermal expansion coefficient of hardened cement paste is studied.
本文研究了水泥石线性热膨胀系数的测试方法，并针对本试验方法制定了相关的试验制度。
The more the magnesia replaces the cement, the greater expansion rate of the cement mortar is.
轻烧氧化镁掺量越大，水泥砂浆的膨胀率越大。
The instantaneous Young's modulus and Poisson (ratio) of the cement paste are calculated by the direct average method and two-scale expansion method.
利用本文中模型和均匀化方法(直接平均法和二尺度展开法)计算了水泥浆体在各瞬时的杨氏模量和泊松比。
The instantaneous Young's modulus and Poisson (ratio) of the cement paste are calculated by the direct average method and two-scale expansion method.
利用本文中模型和均匀化方法(直接平均法和二尺度展开法)计算了水泥浆体在各瞬时的杨氏模量和泊松比。
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