水泥

Based on the deterioration mechanism of corrosive medium, a lot of polymer such as ternary-polymer, adding-felt addition, hydrophobe and polypropylene fiber were added to enhance the performance of anti-corrosion, anti-penetration, conglutination and anti-cracking of original cementious material. The microstrure of cementious material was changed from the simplex hydration product of cement to the superposition structure of the hydrolysate of polymer and the hydration product of cement. A lot of the corrosive ions were prevented from the interior of concrete by this stable structure. The results of tryout indicated that the mending material has the good effect at the corrosion form of corrosive medium.

根据介质腐蚀形式的劣化机理，该文以提高修补材料耐腐蚀性能、抗渗透性能、粘结性能和抗裂性能为出发点，采用添加有机硅改性三元共聚物、增粘剂、孔隙憎水剂等多种聚合物和聚丙烯纤维对原水泥基材料进行改性，使得修补材料的内部微观结构从单纯的水泥水化产物转变成聚合物和水泥水化产物叠合的空间网状结构，这种稳定的结构能有效抵抗各种介质离子的侵蚀，在实际工程上的试用也显示出新修补材料良好的使用效果。

In this study, The Taichung lateritic is improved with slag cement and admixtures with fly ash or water glass.

本研究使用土壤改良材料包括高炉水泥及其掺料飞灰或水玻璃，以高炉水泥或高炉水泥再添加掺料等不同混合的三种配比方式添加於红土中。

Experimental results indicate that a kind of lignosulphonate, which has a water reducing rate of 15.2%, with —OH and —SO3 groups, can be obtained by oxidation and sulphonating straw pulp lignin, and that MLP has better adsorption-dispersion ability to cement grains by electrostatic repulsion.

论文摘要：为开发利用草浆碱木素，通过引发氧化和磺化制备了改性草浆碱木素减水剂，测定了MLP的红外光谱、MLP在水泥颗粒表面的吸附量、水泥ζ-电位、MLP水溶液的表面张力及掺MLP的水泥净浆流动性，并测定了掺MLP的混凝土性能。

The Influences of adding different mineralizers on burnability of Portland cement raw meals, mineral composition and petrographic structure of cement clinker were studied in this paper.

研究了在水泥生料中掺入不同矿化剂对水泥生料的易烧性、硅酸盐水泥熟料矿物形成和岩相结构的影响。

In this thesis, high content blast furnace slag and/or phosphorous slag ecological cement was studied. The aim is to increase additive dosage up to 70% or more, and decrease clinker dosage down to 20% or less, as well as ensure that the resulting cement must possess excellent physicomechanical properties and good durability.

本研究的目的是以矿渣和磷渣为代表，将目前生产的矿渣和磷渣水泥中的混合材掺量逐步提高到70％以上，熟料用量减少到20％以下，在确保水泥具有良好物理力学性能和耐久性能的前提下研制高掺量矿渣、磷渣生态水泥。

Effect of grinding aids on grinding efficiency of Portland cement,slag cement and pozzuolana cement was evualated by adopting indexes such as residue of sieve,specific surface area and size distribution.Some references were provided for the selection of grinding aids by comparision test and results analysis.

选取了立窑和回转窑2种熟料，在同一试验条件下掺入不同种类及掺量混合材磨制成若干个试样，并采用筛余、比表面积及粒度分布等指标来评价助磨剂对普通硅酸盐水泥、矿渣水泥和火山灰水泥粉磨效率的影响，并进行了对比研究，通过作用效果的分析，为助磨剂的选用提供了参考依据。

Cement Corporation Ltd., Meishan Branch cement, precast factory, specializing in the production of cement are private enterprises.

公司下属水泥总公司、眉山水泥分公司，预制构件厂，是专业生产水泥的民营企业。

The paper introduce the productional processing of625#OPC with mechanical shaft kiln ,and emphasize the key factors which can improve the quality of cement.

介绍了用机立窑生产625#普通硅酸盐水泥，着重阐述了提高水泥质量的关键要，进而说明了机立窑生产625#水泥的可行性。

Dissolution process of a-TCP cement hardened body accords with the kinetic model equation: y =-ln =kt05 , its activation energy is 9.87 kJ/mol, which means dissolution is diffusion control. The dissolution mechanism of a-TCP cement may be considered as dissolution and reprecipitation of defective calcium hydroxy- apatite hydrated from a-TCP.

含有TTCH的a一TCP骨水泥固化体在生理盐水中的溶解动力学方程为：y二一In(1一x)=kto.4；溶解过程为扩散控制；其中含l%TTCH的骨水泥溶解反应活化能约为7.17kJ/mol，随着药物含量的增加，骨水泥固化体的溶解速率常数下降。

Studied influence of sulphonated naphthalene formaldehyde condensates, polycarboxylic series(SR3), aminosulfonic acid-based series on rheology of sulphoaluminate cement paste. Adjusted setting time with setting retarder, and reduced water dilution, bleeding, segregation of fresh paste with viscosity-modifying admixture.

研究了萘系、氨基磺酸盐系和聚羧酸系高效减水剂与硫铝酸盐水泥的相容性问题，利用缓凝剂有效控制了硫铝酸盐水泥的凝结时间，利用浆体稳定剂成功解决了水泥净浆的板结、泌水问题，从浆体流变学角度研究了外加剂—硫铝酸盐水泥浆体体系稳定性。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。