水泥标号

水泥标号和石子粒径对工程造价的影响

The influence of cement grade and Particle diameter of crushed stone on the cost of the concrete

通过对水泥品种、水泥标号、水灰比、胶砂比、混合材、及龄期等变量控制进行交叉试验，对制备出的水泥砂浆试块进行冻融循环和强度测试。

Cross experiment was carried out by controling varieties of cement , cement grade , water-cement ratio , mortar ratio , mixed materials , and age . freeze-thaw cycle the preparation of cement mortar block and strength test .

谈氯氧镁水泥标号测定问题

A discussion on determination of strength grading of magnesium Oxychloride Cement

水泥标号增大，砂浆的塑性开裂也将加大；

The total weighted cracking value increases with increasing strength grade of cement ;

水泥标号富余系数的应用研究

Discussion on the Allowance Coefficient of Cement Mark

港工混凝土与选用水泥标号的适用性及其掺用木钙混凝土的经济分析

Economic Analysis on the Selection of Adaptable Strength Numbers of Cement to the Marine Sturcture Concrete and Application of Ligno-calcium Concrete

水泥标号可达325～425，且具有早期强度及抗折强度高等优点。

The cement has a strength of grade ~ # 325 ~ ~ # 425 , and has high-early strength and high bending strength .

提高水泥标号对高掺量粉煤灰碾压混凝土的早期强度有利，但降低了抗折强度的后期增幅。

Raising the cement index does good to the early age strength of RCC with high volume fly ash , but it is unfavourable to later period increasing extent of flexural strength .

分析了灰砂比、水泥标号、拌合工艺、聚合物品种和掺量、纤维品种和掺量、养护制度等对粘结砂浆性能的影响。

This paper analyses the influence of cement / sand ratio , grade of cement mixing processes , variety and added quantity of polymer and fiber , curing system on binding mortar properties .

本文报道和讨论了氯氧镁水泥的标号测定方法问题。

The method of determination of strength grading of Magnesium Oxychloride Cement is reported and discussed in this paper .

400号以下的水泥是低标号水泥。

Cement below No.400 is low-grade cement .

掺入适量粉煤灰和磷石膏以及少量的水泥即可制成标号M5至M15的热再生干混砂浆。

A new type of M5 ~ M15 recycled dry-mixed mortar was made from activity concrete powders mixed with appropriate fly ash , phosphogypsum and a little cement .

铺面水泥混凝土抗冻标号预估模型

Prediction model of frost-resistance grade for pavement cement concrete

高标号水泥较低标号水泥碱性物质较难浸出。

Lower solubility of alkaline substances was observed in high_grade cement compared with that of low_grade cement .

针对寒冷地区混凝土面板堆石坝设计与施工的特点，对防渗结构耐久性设计有如下要求：在水位变动区采用抚顺硅酸盐大坝525号水泥；混凝土抗冻标号为D300（快冻）；

In accordance with the features of design and construction of the concrete rockfill dam in cold region , the requirements of the durability design for seepage control structures are as follows .

在立窑水泥生产中，水泥标号低，质量不稳定。

In the kiln production , the grade of cement is lower and quality is unsteady .

经活化的粉煤灰用作水泥混合材可提高水泥标号或水泥中粉煤灰的掺量。

The activated fly ash , when used as cement blend , can either improve the quality of the cement or heighten the ratio of fly ash in the cement .

在425＃普通硅酸盐水泥中掺入适量矿渣超微粉或两种超微粉可将水泥标号提高到525＃，以满足市场对高标号水泥的需求。

By adding suitable amount of ultra fine slag powder or two kinds of ultra fine powders , 425 grade ordinary portland cement could be changed to 525 grade to meet the requirement of market for the high grade cement .

石灰饱和比（KH值）是水泥生产中经常发生波动的一个率值，它直接影响到水泥的强度标号。

Lime saturation rate ( KH value ) is an easily fluctuate value in cement production . It influences directly on the cement strength .

旋窑生产的水泥、高标号普通水泥配置的塑性混凝土，其技术性能明显优于立窑生产的水泥、低标号和混合材掺量较大的水泥；

The technical properties of the plastic concrete , disposed by the cement produced in rotary kiln and ordinary cement of high grade , obviously superiors to the plastic concrete disposed by the cement produced in shaft kiln , of low grade and having large admixture dosage ;