一般来说，应使用中度坍落度混凝土。
避免在放置之前重新混合混凝土来增加坍落度。
Avoid retempering concrete to increase slump prior to placement.
纤维膏用量增大时，用水量下降，坍落度增大。
When the dosage of fiber cream increases, the water decreases, and the slump increases.
检验了坍落度、动性、合强度和氯离子扩散作用。
Slump, slump flow, comprehensive strength and chlorine diffusion are tested.
检验了坍落度、流动性、综合强度和氯离子扩散作用。
Slump, slump flow, comprehensive strength and chlorine diffusion are tested.
夏季使用，可抑制坍落度损失，一般与高效减水剂复配使用。
Summer is used, can inhibit the slump loss, generally is used with high efficiency water reducing agent.
适当的掺量可减少混凝土坍落度的经时损失，提高混凝土强度。
Results indicate that proper quantities of ultra-fine limestone flour can help engineers to decrease the time-loss of concrete slump constant and to increase concrete strength.
本文研究了硅灰、超细矿渣对高强混凝土坍落度和强度的影响。
The effect of silica ash and superfine slag on the slump and strength of high strength concrete are studied.
研究了掺合料、外加剂对轻骨料混凝土坍落度及抗压强度的影响。
The influence of admixtures on slump and compression strength of light aggregate concrete has been studied.
优选配合比解决了泵送混凝土与减少水泥用量和低坍落度的矛盾。
For pumping concrete mixture the problem of reducing the cement content and keeping better workability was also solved by using optimum proportioning.
减水率达25%，坍落度损失低，各龄期混凝土抗压强度都有较大提高。
And water reducing ratio of concrete is 25%, slump lose a little. Its every age compressive strength has increased obviously.
文章根据大坍落度混凝土裂缝产生的不同原因，提出了裂缝控制的措施。
The paper puts forward the means for the control of plastic concrete crack based on the different reasons.
提出配置缓凝型减水剂应综合考虑缓凝时间要求、坍落度损失和水泥品种。
It proposed that considerations on retarding time, slump loss and cement kinds are important for retarding plasticizer matching.
系统研究了坍落度相同的情况下再生粗骨料取代率对混凝土基本性能的影响。
The influence of recycled coarse aggregate replacement rate on properties of concrete with the same slump is discussed in the paper.
当提起坍落度筒时，混凝土出现了垂直方向的塌落，称之为混凝土的“坍落度”。
The vertical subsidence of the concrete that occurs, when the slump cone is raised, is termed the 'slump' of the concrete.
试验结果表明，复合使用高效减水剂和缓凝剂，能有效控制混凝土坍落度经时损失。
Experiment results showed that compound use of efficient water-reducing admixture and retarding agent can efficiently control the pumped concrete slump loses through time.
在泵送混凝土中掺外加剂，能增加拌合物的流动性并降低泵送混凝土坍落度经时损失。
Mixing admixture in the pumped concrete can increase the mobility of mixture and reduce pumped concrete slump loses through time.
试验结果显示：从坍落度方面考虑，粉煤灰的掺量应该在30%左右或大于30%为最佳。
Laboratory test showed that: In consideration of slump, the optimization content of the fly ash was around 30% or more than 30%.
这两种复配型减水剂能明显改善混凝土的和易性，降低坍落度损失和提高混凝土抗压强度。
They can remark ably improve the workability, reduce the gradual loss of lump and improve the compressive strength of concrete.
高效减水剂是指在保持混凝土坍落度基本相同的条件下能大幅度减少拌和用水量的外加剂。
High efficiency water reducing agent is a kind of additive agent, which can reduce mixing water greatly while maintaining unchanged landslide.
它具有掺量低、减水率高的优点，但与水泥适应性较差和坍落度损失大一直是混凝土生产上的难题。
It has high water reducing rate at low dosage whether the adaptability problem with cement and high slump loss are always the point in concrete production.
并且由于其具有FDN缓释效果，还能有效延长水泥的净浆流动度，减少混凝土坍落度的经时损失。
Besides, it effectively maintains fluidity of cement paste and decreases concrete slump loss which is attributed to absorption effect of zeolite to FDN.
通过对充填料坍落度、流动性、强度等指标的试验及充填效果分析，认为该充填新工艺可靠、实用。
From experiments of intensity, fluidity, collapsibility of the filling materials, it showed that the new filling method was reliable.
该混凝土具有流动性大，坍落度损失小，早期强度高的特点，适合于高层、大跨度的现代建筑结构。
The concrete has the characteristics of large fluidity, low slump loss, and high early strength, and it is suitable for the highrise and long-span building structure.
通过水泥净浆试验比较选择了减水率高、坍落度损失小、与水泥适应性好的氨基苯磺酸盐高效减水剂；
Aminobenzenesulfonic acid super-plasticizer is selected though cement paste test, which be provided with high water-reducing property, low slump loss and good compatibility with cement.
主要论述拌和水泥混凝土配料时如何提高气动闸门的配料精度，如何比较准确地控制混凝土的坍落度。
This paper focuses on mixing cement concrete batching at how to improve the preparation of precision pneumatic valves, and how to accurately control the concrete slump constant.
通过混凝土坍落度试验，从水泥、粉煤灰及塑化剂三方面研究了水泥及粉煤灰与塑化剂的适应性问题。
Compatibility of cement and pfa with plasticizer was studied through the slump test of concrete from the aspects of cement, pfa and plasticizer.
对配合比相同和坍落度相同两种情况下，不同再生骨料掺入量混凝土的基本性能进行了系统的试验研究。
Experimental work was conducted to investigate the basic physical and mechanical properties of concrete with different percentage of recycled aggregate.
氨基磺酸系高效减水剂asp的减水率高、坍落度损失小，但价格较高、混凝土保水性差，限制了其应用。
ASP has high water-reducing rate and low slump loss, but it is expensive, and the water-retention of concrete is bad, which limit its application.
提出了改性砂土的等效离散元模型，在此基础上建立改性砂土坍落度实验和直剪实验的离散元数值实验模型。
The equivalent discrete element model of the conditioned sands is provided, on the basis of which the DEM numerical model of the slump test and the shear test of the conditioned sands are established.
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