sand test

Test Study on Relation Between Thaw Collapse Displacement of Medium Sand and Negative Friction of Single Pile

中砂融沉位移与单桩负摩阻力关系的试验研究

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The weight loss of core sand after immersion in test solution is of < 7% and> 60%;

储层水敏岩心在HDS01和SSN13溶液中的失重率分别为60%；

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It could improve survival rate of seedlings to chose coarse sand or coarse sand and perlite ( 1 ∶ 1) as media and transplant test tube seedlings in spring and autumn, and the rate was about 90%.

在试管苗移栽阶段，基质选用粗河沙或粗河沙+珍珠岩（1∶1），于春天和冬天移栽，可提高试管苗移栽的成活率，使移栽成活率达到90%左右。

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Centrifuge Modeling Test to Working Mechanism of Reinforced Aeolian Sand Retaining Wall

加筋风积沙挡墙工作机理的离心模型试验

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The triaxial shearing test showed that the cohesion of sand reinforced with the fibre of sand thorn or sand willow was increased by 2.5~ 4 times; the cohesion and the angle of internal friction were increased by 0.25~ 0.40 times for the reinforced clay soil.

三轴剪切试验结果表明，沙棘、沙柳须根的加筋作用使沙土的粘聚力c值提高了2.5~4.0倍，使粘性土的粘聚力c值及内摩擦角φ值均增加0.25~0.40倍。

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The sand test and model land test were the proof of the stimulation of litter on the growth of ash. On Sand Test.

室内砂培试验证明、落叶松的枯枝落叶能促进水曲柳的生长，模拟样地试验验证了室内砂培试验的结果。

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Wind Tunnel Test on Sand preventing Mechanism of Double-filmed Sand bag Obstacle and Upright Checkerboard Sand-barrier

复膜沙袋阻沙体与芦苇高立式方格沙障防沙机理风洞模拟实验

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Formation damages resulted from large test pressure difference include particles migration, formation sand production, retrograde condensation and early water production, and so on.

测试生产压差过大产生的危害包括微粒运移、地层出砂、反凝析、早期出水等。

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The special feature of the new testing method is that a cake-like sand test piece with V-shape groove on its surface is heated from bottom to top in a new-designed high temperature shock heating furnace.

新试验方法的特点是采用表面有V形沟槽的圆饼形型砂试件，在激热试验炉中受到自下而上的高温烘烤。

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The test target of "depositing coarse sand and discharging the fine" is basically achieved.

放淤试验工程淤粗排细的目标基本得以实现。

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Based on physicochemical test of resin film and analysis of resin sand properties, the CO2 gas-hardened mechanism of PANa resin sand was discussed.

通过对树脂膜的理化分析和对树脂砂性能试验，探讨了聚丙烯酸钠树脂砂CO2硬化机理。

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