The results show: (1) with high calcium mixing, concrete workability was modified, the water quantity needed for standard consistence decreased, initial and final setting time increased;
结果表明：（1）高钙灰的掺入改善了胶砂的工作性，降低了标准稠度用水量，延缓了胶材的初终凝时间；
Effect of fly ash on the workability, strength and hydration heat of high belite cement and concrete.
粉煤灰对高贝利特水泥和混凝土的工作性、强度及水化热的影响。
Self-compacting concrete(SCC) is a kind of high-performance concrete with high workability.
自密实混凝土是一种具有高工作性能的高性能混凝土。
Such high performance concrete aims to have high strength, workability, volume stability and endurance.
高性能混凝土以高强度、高工作性、高体积稳定性和高耐久性等技术指标为设计目标。
The high performance concrete for core wall of earth dam must be good workability, low early strength, high final strength, high seepage resistance, low elasticity modulus and high tensile strength.
黄壁庄水库副坝防渗心墙加固工程所需高性能混凝土，要求和易性好、早期强度低、后期强度高、抗渗性能好、低弹模和高抗拉强度。
But physical excitation has a bad effect on the workability of fresh concrete.
但物理激发对新拌混凝土工作性造成一定的不利影响。
It can improve the workability, pumping properties and early strength of the concrete.
使混凝土的和易性、可泵性均得到明显的改善，可提高早期强度。
However, there are large distinctions between the influences of the two types to the workability of cement paste and fresh concrete, the mechanical properties and microstructure of hardened concrete.
它们对水泥净浆和新拌混凝土的工作性的影响有所不同，此外掺加两类减水剂的硬化产物的力学性能和微观结构也具有很大差别。
Aiming at these defects, a kind of special mortar for plastering aerated concrete with good workability, good water retention, high bonding strength and low shrinkage ratio has been prepared.
针对这些缺陷，研制了一种和易性好、保水性好、粘结强度高、收缩率低，适合加气混凝土抹灰用的砂浆。
They can remark ably improve the workability, reduce the gradual loss of lump and improve the compressive strength of concrete.
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。
Mainly used in concrete construction, it can improve the workability of concrete and also have high cost effectiveness.
主要在混凝土施工中使用，可明显改善混凝土的和易性，具有很好的性价比。
The second is control of workability of fresh concrete, if concrete isolation secretion of water, strictly control the vibration time, vibration rehabilitation must be timely.
二是控制新拌混凝土的和易性，如果混凝土离析泌水，严格控制振捣时间，必须适时进行复振。
Its good workability and homogeneity not only are convenient to the construction but also quicken the pouring progress of concrete.
良好的和易性、均匀性既方便施工又加快了混凝土浇筑进度。
In order to enlarge the applications of rubber concrete, the workability, mechanical property and durability of mortars and concretes are investigated.
为了扩大橡胶混凝土的使用范围，本文研究了掺加两种粒径橡胶的水泥胶砂和混凝土的工作性、力学性能及耐久性。
And analyses that the five factors have an effect on the workability and mechanical properties of recycled coarse aggregate high strength concrete.
分析这五个因素对再生混凝土工作性能和力学性能的影响。
Green high performance concrete has not only good endurance, workability, mechanics and economic reasonability, but also characteristics of energy saving and environment protection.
绿色高性能砼有仅具有良好的耐久性、工作性、力学性能及经济合理性，还具有节能、环保等特点。
And compared with ordinary concrete, high performance concrete adding fly ash shows better workability. But there is an optimum mixing dosage of fly ash for crack resistance of concrete.
与普通混凝土相比，掺入粉煤灰可以改善混凝土拌和物的和易性，但粉煤灰对于混凝土的抗裂性存在一个最优的掺量。
Some prevention measures against accidents about bricks engineering and concrete engineering can be directly applied in practice, and have sound workability.
砌体工程和混凝土工程质量事故的预防措施可以直接应用于指导工作实践，具有良好的可操作性。
The results prove that SRA can improve the workability of HPC and promote effectively anti-cracking performance of concrete, without any negative effect on the mechanical property of concrete.
研究结果表明：减缩剂能够改善高性能混凝土的工作性，对混凝土的力学性能无副作用，能够有效地提高混凝土的抗裂性能。
The influences of fine slag powder to workability, compressive strength and durability of high-performance concrete were discussed.
讨论了矿渣微粉对高性能混凝土工作性能、抗压强度及耐久性的影响。
It has great dispersibility and can improve the workability and strength of concrete.
具有良好的分散性，可明显改善混凝土的和易性，提高砼的强度。
This article discusses the influences of fine slag powder to workability, compressive strength and durability of concrete in the test.
通过试验讨论了矿渣微粉对混凝土工作性能、抗压强度及耐久性的影响。
Mechanism, Mix ratio design, workability evaluation and test method of high-dropping shake-free self-compacting concrete were put forward.
提出对高抛免振捣自密实混凝土的工作机理、配合比设计、工作性评价方法及相应的试验方法。
With the vibrating and rotating immaterialized force, the concrete material can be conveyed continuously and smoothly, and a large-area mixing with deep workability is generated.
利用震旋虚化力使混凝土材料连续顺畅通过并发生大面积的有深入和易性的拌和。
The experimental results for workability, air content, compressive strength and flexural toughness of modified macro polypropylene fiber reinforced high performance concrete are presented.
按照国际标准对新型仿钢丝聚丙烯合成长纤维增强高性能混凝土的工作度、含气量、强度及弯曲韧性进行了试验研究。
By maintaining workability, but at a lower water content, concrete strength may be increased without the need for further cement addition.
保持工作度不变，在低用水量时，不必增加水泥用量，混凝土的强度也能增加。
This paper introduces the evaluation methods of workability, and studied the properties of the self-compacting concrete with the addition of ground granulated blast-furnace slag (GGBS).
探讨了自密实混凝土工作性能的评定方法，并对掺加磨细矿渣的自密实混凝土进行了研究。
Due to its extraordinary workability, the casting noise was lowered, the casting efficiency, ability and quality were enhanced, and concrete strength and durability were enhanced also.
由于该自密实混凝土优异的新拌工作性，因而降低了施工噪音，提高了施工效率和浇注质量，同时，也使得混凝土具有良好的强度和耐久性。
When the stone waste powder content raise from 10% to 20%, the workability of the concrete was improved, the early strength of concrete was gradually increased and the later strength was reduced.
当废石粉掺量由10%增加至20%时，混凝土的工作性能均会得到提高，同时混凝土的早期强度也逐渐升高，但混凝土后期强度却会降低。
If the strength and workability are approximate identical, concrete tends more easily to crack with the increasing sand rate.
在强度和工作性相当的情况下，随着砂率的增大，混凝土出现裂缝的机会增加了。
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