砂率

SP板高砂率混凝土配合比研究

Study of Proportion of Long-span Slab Prestressed Concrete with High Sand-aggregate Ratio

采用正交设计法研究了影响SP极高砂率混凝土强度的各种因素，提出了各组成材料用量的合理范围。

The various effecting factors of long-span slab prestressed concrete strength with high sand-aggregate ratio is studied by the orthogonal design approach in this paper .

试验结果表明采用低砂率，同时双掺高效减水剂和矿物掺合料时，在不增加水泥用量的前提下，完全可以配制出满足要求的C50￣C80的高强度混凝土。

The results showed that the high strength concrete of C50 ~ C80 can be made directly with low sand percentage , superplasticizer and mineral admixture , and without the addition of cement .

以分层度、坍落度、扩展度为新拌混凝土工作性能的评价指标，研究了矿物掺合料、砂率、增粘剂和减水剂对高强轻集料混凝土（LWAC）工作性能的影响。

Influence of mineral admixtures , sand ratio , tackifier and water reducer on the workability of the high strength lightweight aggregate concrete ( LWAC ) are studied by taking advantage of segregation degree , slump and dispersion as evaluating indicators .

钢纤维混凝土中合理砂率的研究

Research of the Rational Sand Rate in the Steel Fiber Concrete

砂率对剪切型钢纤维增强混凝土性能的影响

Effect of Sand Ratio on Thin-Plate Shearing Steel Fiber Reinforced Concrete

成型方式和砂率对透水混凝土性能的影响

Impact of formation way and sand ratio to the pervious concrete performance

砂率对高性能混凝土的影响研究

Study on impact of sand rate on high performance concrete

胶凝材料用量及砂率对自密实混凝土工作性的影响

Effect of Cementitious Material Content and Sand Percentage on Workability of Self-Compacting Concrete

泥浆含砂率对桩基质量的影响

Influence of percentage of sand content in mud on the quality of pile foundation

浅析普通水泥混凝土配合比设计中砂率的确定

Initial analysis on confirming of sand ratio in common cement concrete mixing ratio design

对改性沥青混合料中砂率的研究

Research on sand ratio of modified asphalt mixture

砂率对砼和易性及强度影响的试验研究

The study of the influence of sand percentage on the workability and strength of concrete

赋存气水合物的沉积物的含砂率通常在35%～70%之间。

Gas hydrate bearing sediments generally have the sand content of 35 % to 70 % .

应用物理化学分析中的沉降分析法对污水水体内可沉固体中含砂率进行测定。

The sedimentation analysis method was used for measuring the sand content of settleable solid in wastewater .

同一掺砂率条件下，导热系数随着含水率增大显著增大。

Thermal conductivity increases significantly as the water content increase , under the condition of certain sand ratio .

现行的地层骨架密度公式仅仅考虑含砂率对地层骨架密度的影响。

The traditional formula indicated that sandstone percent is the only affecting factor to the formation grain density .

砂率及特细砂与鱼米石比例对高强泵送混凝土性能的影响

Effects of Sand Percentage and Proportion of Crushed Rock Fine to Sand on Properties of High Strength Pump Concrete

适当提高砂率，混凝土用水量基本不变，但能防止新拌混合料离析泌水；

Adding properly sand ratio can prevent gravity segregation and weeping of concrete mixture and keep the water content constant .

研究结果表明：随着胶结料总量和砂率的增大，高强高性能混凝土的收缩开裂趋于严重；

The result shows that the more the binder material or sand rate , the more serious the shrinkage cracking .

本文给出了出砂率与时间、产量与时间之间的定量关系。

This paper also provides the quantitative relationships between sand cut and time , and production increment multiple and time .

提出了薄板剪切型钢纤维增强混凝土的合理砂率取值与配合比设计的建议。

The reasonable values of sand ratio and the mixture design method of thin-plate shearing steel fiber reinforced concrete are proposed .

抗压强度随砂率增大逐步降低；劈裂性能则是先增大后减小。

The compressive strength decreases as the sand ratio increases , while the crack resistance firstly increases but decreases later on .

结果表明：水胶比、砂率是影响自密实混凝土力学性能的主要因素，而外加剂掺量对其影响较小。

The results showed that water-to solid ratio and sand-total aggregate ratio were the important factors to mechanical performance of self-compacting concrete .

而合适的砂率、矿物掺合料种类及掺加量也对于混凝土强度有明显影响。

Suitable sand ratio , the type of mineral admixture and mixing also for a clear impact on the strength of concrete .

用再生粗集料拌制混凝土，砂率应比用碎石拌制混凝土时提高1%～2%。

When preparing concrete with recycled aggregate , sand ratio should be1 % ~ 2 % higher than when crushed stone is used .

随着掺砂率增大，自由饱和混合物试样持水性能下降，而干密度对其持水性能基本没有影响。

While for the bentonite-sand mixtures saturated under free condition , the water-holding capacity is found to be constant with different dry densities .

通过改善集料级配，适当增加砂率等措施来解决流沙问题能取得良好的效果，可为类似工程提供参考。

It can get good effect through the measures of advancing the aggregate grading and increasing sand ratio and provide reference for similar engineering .

分别用平板法及圆环法测试研究了不同代砂率的橡胶砂浆在塑性阶段及硬化早期阶段的收缩开裂性能。

Properties of anti-cracking of rubberized mortar were studied at plastic stage and hard stage by the method of board and ring devices respectively .

不同干密度、掺砂率试样，含水率为0%时导热系数相差较小。

There is no significant difference between thermal conductivities for different dry density and sand ratio specimens , when the water content is0 % .