水泥石

油井水泥石属于脆性材料，其在动态下的力学性能与静态下的情况相比有显著的差异。

As oil well cement stone is a brittle material , its dynamic mechanical property differs remarkably from that of a static condition .

结果表明：腐蚀深度作为评价腐蚀程度的几何指标可用于综合评价水泥石的腐蚀程度。

The results show that the corrosive depth as a geometrical target of the corrosive degree can be used as the composite target for evaluating the corrosion degree of cement stone .

水泥石中羟钙石的X射线衍射定量分析

Quantitive Analysis of the Portlandite of Cement Hydration Products by XRD Method

CO2对油井水泥石的腐蚀：热力学条件、腐蚀机理及防护措施

CO2 Corrosion on Oilwell Cement Shearth : Thermodynamic Criteria , Corrosive Mechanism and Prevention

水泥石-玻璃界面效应的XRD测定

Determination of interfacial effect between glass and hardened cement paste by X-ray diffraction

硅粉水泥石小角度X射线散射实验研究（Ⅱ）&微孔界面过渡层厚度

Experimental Study on the Silica Fume Cement Paste by Small Angle X-ray Scattering (ⅱ) & Micropore Boundary Transition Layer

文章还分析了LC提高水泥石强度的机理，为选择高温缓凝剂提供了一定的依据。

This paper also analyzed the mechanism of LC raising the strength of cement .

同时使C－S－H（gel）尺寸变小，水泥石的结构致密，总孔隙率和最可几孔径减小，强度大幅度提高。

Meanwhile , the porosity and the most probable aperture of paste reduces and the strength largely increases due to densified microstructure .

通过特性分析，认为改善水泥石的渗透性，降低水泥石中Ca（OH）2的含量，能从本质上提高水泥石的抗腐蚀能力。

Analyzing results show that improving permeability of cement , reducing content of Ca ( OH ) 2in cement can improve the ability of anticorrosion .

水泥石&集料界面过渡层中CH晶体取向机理的探讨

A Hypothesis about the Mechanism of Orientation of CH Crystal in Interface Layer between Cement Paste and Aggregate

通过XRD、XRF、SEM实验发现纳米材料水泥石结构致密，孔隙率低，具有良好的微观形貌。

By XRD , XRF , SEM experiments founding that nano-materials cement paste with compact structure , low porosity has good microstructure .

用X射线衍射法测定了无Al2O3但掺有二水硫酸钙的水泥石与CaO-Al2O3-SiO2系统的玻璃之间的界面效应。

The interfacial effect between CaO-Al_2O_3-SiO_2 glass and hardened cement paste mixed with gypsum but with no Al_2O_3 was studied .

高矿化度地下水和高合CO2、硫酸盐还原菌的地下水，通过溶蚀、化学和膨胀对水泥石进行腐蚀，减低油井寿命。

The ground water with high salinity , high CO2 content and ground water of sulphate reducing bacteria corrode the cement by dissolving , chemical and expansion actions .

Na2SO4对水泥石结构与性能的影响

Effect of Na_2SO_4 on properties of Cement stone

水泥石与石灰石集料界面过渡区孔结构及其CH晶体亚微观结构的研究

An investigation on the pore structure and ca ( oh ) _2 crystal SUBMICROSTRUCTURE in the interfacial zone between cement paste and limestone aggregate

合成C-S-H凝胶对水泥石-集料界面区的影响

Effect of Synthetic C-S-H Gel on the Interfacial Zone between Hardened Cement Paste and Aggregate

C-S-H及C-S-H脱水相对水泥石结构改性的研究

An investigation of modified microstructure of hardened cement paste with C-S-H and dehydrated C-S-H phase

粉煤灰改善水泥石抗TSA性能的效果与其组成和掺量有关。

The effect of fly ash on TSA of harden cement paste is closely related to its chemical composition and content .

结果表明，MTC固化体的体积收缩率远小于水泥石的体积收缩率。

The results show that the volume shrinkage of MTC solidified body is far less than that of conventional cement .

研究表明：采用SHPB技术测量水泥石材料的动态力学性能方法是可行的；

The study shows that the method for measuring the dynamic performance of cement rock material by using the SHPB is feasible .

水化3d时，针柱状AFt晶体相互交织，和Ca（OH）2构筑成水泥石骨架，早期强度明显提高。

At 3 days curing age , AFt crystal of the needle intertwined each other . And it built into the cement matrix with Ca ( OH ) 2 , the early strength was improved .

例如：CO2气体对水泥石的腐蚀会导致水泥石强度降低，增加渗透率，提供了气窜通道。

This scenario will cause great economic loss . For example , corrosion from CO2 will reduce the compression strength and increase the permeability rate of the cement rock , forming an access for gas migration .

石粉掺量为30%时，水泥石发生严重TSA破坏，无石粉掺入时，水泥石仅表现为轻微传统硫酸盐侵蚀破坏。

The harden cement paste containing 30 % of limestone powder was damaged seriously , while only minor conventional sulfate attack occurred when non-limestone powder incorporated .

基于水泥石孔隙理论对超细粉煤灰（Ultra-fineflyash，简称UFA）水泥基材料的早期自干燥效应进行了理论分析及试验研究。

According to the pore theory of hardened cement paste , early self-desiccation effect of cement-based materials containing ultra-fine fly ash ( UFA ) was researched by the combination of theory and experience .

将浸泡于不同温度的质量分数为10%的MgSO4溶液中的含石灰石粉水泥石试样进行X射线衍射分析、扫描电子显微分析、能谱分析和激光Raman光谱分析。

X-ray diffraction , scanning electron microscope , energy dispersive spectrum and laser Raman spectrum analysis were used to identify thaumasite in paste sample stored in 10 % ( in mass ) of MgSO_ ( 4 ) solution at different temperatures .

C2S在后期则具有一定的水硬性，它对水泥石的长期强度发展是有益的；

C2S contributed to the later strength of cement because of its activity at later hydration stage .

结果表明：RF抗腐蚀材料能够明显地改善水泥石的抗腐蚀性能，并且所开发的抗腐蚀水泥浆体系具有良好的防窜、低失水、浆体稳定等综合性能。

SEM and X-ray analyses of the tested cement show that RF can improve the anti-corrosion capacity of the cement , and the cement slurries treated with RF have good gas-check ability , low fluid loss and better rheology stability .

在CFRC的制备过程中，碳纤维的均匀分散是决定碳纤维水泥石及混凝土压敏稳定性的关键问题之一。

One of key factors to ensure the compression-sensibility stableness of CFRC is the dispersion of short carbon fiber ( CF ) in cement paste uniformly .

由于辉绿岩为硅质集料，辉绿岩碎石与水泥石形成界面较石灰石碎石与水泥石所形成界面处的Ca（OH）2晶体更小，且界面显微硬度更高，表现出的宏观力学性质更好。

The dimension of Ca ( OH ) 2 crystals of the ITZ of the diabase concrete is smaller and micro-hardness of that is higher , because the diabase aggregate is the siliceous one . And the diabase concrete have the better mechanical property .

结果表明，GX可以显著提高油井水泥石的韧性和弹性，并且与其他外加剂配伍性良好。

The result shows that the flexibility and elasticity of cement stone can be obviously improved with GX , good compatibility with other additives is obtained .