细砂

依据室内试验和有限元的计算模拟数据，为类似工程的设计、施工提供理论指导，提出细砂改良土填筑路基的施工控制和质量检测方法。

Based on the tests indoor and the finite element calculation simulation data , we can provide the theoretical guidance , the methods of construction control and the quality test of the fine sand and the fine sand through improved to fill the subgrade .

不排水循环荷载作用过程中累积孔压对细砂弹性剪切模量G（max）的影响

Effect of accumulated pore pressure on shear modulus G_ ( max ) of saturated fine sand during undrained cyclic loading

对泥质粉、细砂出砂层段采用PS防砂或酸化-抑砂剂处理；

PS sand control or acidizing sand inhibitor treatment should be used for argillaceous , silty and fine sand producing interval ;

地层对比中将红粘土与细砂互层与黄土沉积的L4相对应。

The interbed of red clay and sand layers wascorrelated to L4 in loess-paleosol sequence .

特细砂砌筑砂浆7d推定28d抗压强度试验研究

Experimental Study on Estimating 28d Compressive Strength of Super-fine Sand Masonry Mortar by 7d Compressive Strength

本文针对不符合高速铁路基床底层和高速铁路基床以下路堤填筑的C组细砂填料进行了物理改良研究，现场填筑结果表明改良填料达到设计要求，改良取得了理想的效果。

This paper studies on physical improvement of C group fine sand , which is not qualified for the constructions of high-speed railway subgrade and embankment . Results of improved filler field filling experiment show that the improvement achieved the desired effect .

随复合体粒径的增大，游离态胡敏酸类型的变化序列为A型（粘粒）→A型（粉粒）→RP型（细砂）；

The type of free humic acid changed with the increase of complex particle diameter was the following order : A type ( clay )→ A type ( silt ) → Rp type ( fine sand );

分析了EPS颗粒形貌、EPS粒径和级配、膨胀珍珠岩和特细砂、粘结剂品种和掺量、纤维品种和掺量、养护制度等对EPS保温砂浆性能的影响。

The influence of granula morphology , grain size and distribution of EPS , variety and added quantity of expanded pearlite , super fine sand , binder and fiber , curing system on EPS thermal insulation mortar properties are analyzed .

磁性矿物在极细砂中的富集大幅减少，而更多富集在粉砂组分中的现象表明了物质来源又一次发生了变化，SD较多出现可能是长江上游玄武岩加入的体现。

The phenomenon that magnetic minerals in the very fine sand fraction reduced substantially , and more concentrated in the silt fractions indicated the change of sediment source once again . More SD magnetic minerals may be from the basalt in the upper of Yangtze River .

为此，采用多功能三轴仪和压电陶瓷弯曲元剪切波速测试系统，研究了不排水循环荷载过程中孔压对细砂Gmax的影响。

The effect of accumulated pore water pressure on Gmax is investigated based on a series of cyclic triaxial tests with piezoceramic bender element system .

针对直径为300mm的粗粒土试样，通过在试样周围填充细砂的方法来消除橡皮膜嵌入的影响。

By filling peripheral specimen voids with fine sand the membrane penetration effects may be eliminated in coarse grained speciments of 300 mm in diameter with a maximum particle size of 60 mm .

本文初步探索了使用特细砂，同时掺加高效减水剂、粉煤灰、硅灰等配制出C50￣C80的高强度混凝土的一系列性能，诸如和易性、强度、弹性模量等。

A series of performance such as workability , strength and elastic modulus of high strength concrete mixed with superfine sand , superplasticizer together with fly ash or silica fume was exploited .

试验结果表明，细砂Gmax可由Hardin型经验公式计算，但材料参数应通过试验确定；

The test results indicate that the elastic shear modulus Gmax of fine sand can be calculated from the Hardin equation , but the material parameter must be determined by tests ;

实验以60目-80目细砂作为主要的惰性床料，在表观气速为2.55m／s情况下，实现了绝大部分固体颗粒在脱硫塔内的内循环。

Most of 60-80 mesh sand used as the main bed material internally circulated when superficial gas velocity was at 2.55 m / s.

本文主要介绍在1500m地热深井中使用贴砾滤水管，解决了在细砂、粉细砂地层中钻井，经常出现的涌砂技术难题。获得了理想的经济效益和社会效益。

This paper introduces mainly the use of peble-lined filter pipe in geothermal well 1500m in depth , which solved the difficult problem of sand bursting that often occurs in the drilling of fine sandy or silt-sandy strata , and ideal economic and social effects were obtained .

燃烧合成Y3Al5O（12）过程中铝粉粒度与压块密度对燃烧速率的影响一颗好的细砂是由一块模板涂层并炮击后形成的，而这模板是由亚铁或者铝质材料制成。

EFFECT OF ALUMINUM PARTICLE SIZE AND COMPACT DENSITY ON THE COMBUSTION VELOCITY FOR Y_3Al_5O_ ( 12 ) CERAMIC PREPARED BY THE SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS A fine sand is coated and fired upon a mounted pattern made of ferrous or aluminum material .

中全新统为冲积物，上部亚粘土，中部黑色泥炭层，下部细砂及砂砾层，厚5.1m；测得C~（14）年龄为4730&2976年。

Middle Holocene : it is marked by mild clays in the upper , black peat beds in the middle and fine sands and gravels in the lower , 5.1m thick , with C ~ ( 14 ) ages of 4.730-2.976 Ka .

结果认为，结皮的形成是以细砂和粗粉砂为骨架，以小于0.01mm的细小颗粒填塞土壤空隙的一个物理过程，其腐殖质含量几乎与土壤相同，而碳酸钙含量则略低。

Crust formation is a physical process that the framework formed by fine sand and coarse silt is filled by small grain ( 0.01 mm ) . The content of humus is nearly same as that of soil while the content of CaCO 3 is slightly lower .

结皮的物理特性主要体现在（1）土壤结皮的机械组成以细砂和粗粉砂为主，但总量低于同种对照土壤；小于0.01mm的物理性粘粒结皮含量高于对照；

Characteristic of Crust : ( 1 ) The main composition of soil crust is fine sand and coarse mealy sand , while their contents are lower than comparison soil and the contents of the crust with physically clay ( < 0.01mm ) are higher than comparison soil .

特细砂矿渣高性能混凝土的研制

The Development of High-performance Concrete from Extra Fine Sand and Slag

短桩在粉、细砂中的垂直及水平承载力的试验研究

Study of Bearing Capacity of Short Pile in Silty Fine Sand

循环荷载作用下南京片状细砂的不排水动力性态

Undrained cyclic behaviors of Nanjing flake-shaped fine sand under cyclic loading

尾矿特细砂在商品混凝土中应用探讨

Application study on superfine tail mineral sand used in ready-mixed concrete

介绍了五台山铜塔铸造工艺，由于其结构特殊，故采用了3种工艺分别铸造而成：细砂湿模造型、树脂砂毁模贴皮造型和熔模铸造。

Casting process of copper tower for Wutai mountain was introduced .

粉煤灰细砂胶结充填在新桥硫铁矿的应用

The Application of Cementing-filling of Flyash & Fine-sand In Xinqiao Pyrite

饱和细砂的动力反应及其中的弹性体波

The Dynamic Responses and Elastic Body Waves in Saturated Fine Sand

特细砂干混砂浆配制与性能研究

Preparation and Study on Extra Fine Sand Dry - mixed Mortar

水工特细砂混凝土性能试验

Experimental study on characteristics of hydraulic super - fine sand concrete

悬浮颗粒物包括细砂、粘土和水泥。

The particles of the suspension are sand , clay and cement .

特细砂高强混凝土的微观结构测试与研究

Experiment And Study On Microstructure of Superfine - sand High Strength Concretes