沈阳市粉煤灰综合利用研究推广中心

沈阳市粉煤灰综合利用研究推广中心设在辽宁建科粉煤灰应用技术研究所。主要技术和产品为“HAB”外加剂、环保节能“HAB”粉煤灰空心砌块、干混砂浆、发泡砼等,项目主要技术指标达到国内领先,即粉煤灰掺量大于85%,承重砌块的抗压强度大于7mpa。目前,“HAB”外加剂、环保节能“HAB”粉煤灰空心砌块生产技术已在我市推广到7家企业,辽宁省内推广到38家企业,全国推广到130多家企业,为国家带来了巨大的经济效益和环境效益。辽宁建科粉煤灰应用技术研究所于1998年成立,是以粉煤灰综合利用科学研究、产品开发、技术成果推广、建设方案编制、技…     

粉煤灰小型空心砌块的性能及应用

通过对粉煤灰小型空心砌块的性能分析 ,指出它作为一种“绿色砌块”是替代粘土实心砖的理想墙材之一 ,并就其进一步推广、应用提出了一些建议     

配制绿色混凝土空心砌块的试验研究

根据阜新地区的自燃煤矸石、粉煤灰两种工业废渣的特性,使用均匀设计理论设计试验方案,配制绿色混凝土空心砌块12组。根据检测结果、耐久性、经济性的要求,5~#混凝土空心砌块的配方为最佳配合比,工业废渣掺入量超过40%。使用SPSS软件进行回归分析,得到抗压强度方程,证明该配方具有较高的可靠性。利用BP网络预测了绿色混凝土空心砌块抗压强度,预测结果与试验结果基本吻合。所得最佳配方具有良好的推广前景。     

纳米粉煤灰夹心砌块的研制

利用纳米材料、水泥、粉煤灰等主要原材料,加入适量外加剂,中间填入废弃聚苯乙烯泡沫.通过自然养护方法研制出纳米粉煤灰夹心砌块这一新型墙体材料.依据粉煤灰混凝土空心砌块的设计要求,设计砌块块型.根据正交实验方法,以砌块抗压强度为主要指标,优化砌块配合比参数,研制出了具有承重、保温隔热等多重功能的新型砌块.     

框架、框剪结构轻质砌块填充外墙渗漏成因及防治措施

由于轻质砌块,如加气砼块、空心粘土砖、陶粒空心砖、粉煤灰硅酸盐砌块、砼空心砌块等,具有容重轻、隔热保温性能好、施工方便以及降低工程造价等优点,因此,在框架、框剪结构填充墙中应用非常广     

掺纳米SiO2粉煤灰夹芯砌块的抗折强度

 利用纳米SiO2、水泥、粉煤灰等主要原材料,加入适量外加剂,制作空心砌块,中间填入废弃聚苯乙烯塑料泡沫,通过自然养护方法研制出一种符合节能要求的自保温墙体材料——掺纳米SiO2粉煤灰夹芯砌块。以普通粉煤灰混凝土空心砌块规格和块型的设计要求和标准作为本研究砌块设计方案的基础,设计出尺寸、孔洞大小及孔洞分布符合要求的砌块。研究了粉煤灰、纳米SiO2、水泥及水等影响砌块强度的主要因素,以砌块抗折强度为主要指标,取4因素、3水平进行正交试验,优化砌块配合比参数,最终得出最佳配比为粉煤灰40%,水泥14%,纳米SiO2 0.5%,水掺量为22%,该砌块具有较高的抗折强度及较低的成本。该配合比的因素水平组合与前期研究中取得较高抗压强度的因素水平一致,并且其抗折强度与抗压强度比值较高;该配合比砌块不仅抗压强度高,而且抗折强度大,应用该砌块砌筑的砌体具有较高承受复杂应力的能力。     

混凝土空心砌块、劈裂砌块节能复合墙的施工及应用

本文介绍混凝土空心砌块、劈裂砌块在平顶山市棚户区改造工程中的推广、应用,并通过实例比较空心砌块芯柱的施工要点及效果.     

混凝土砌块墙体施工的质量控制

混凝土小型空心砌块（以下简称砌体）是近几年兴起的一种新型墙体材料,随着国家对墙体改革的要求,砌块的施工正在迅速地在建筑业发展,由于砌块建筑适应性强,施工方便,对建筑物的平面和空间变化无严格要求,能够满足建筑变化的需要。而且,空心砌块制作工艺简单,可以因地制宜,充分利用本地区材料,如碎石、卵石、砂、浮石、火山渣等,也可利用工业废渣做原料,如粉煤灰、石渣等变废为宝,化害为利。使用空心砌块还可以节省大量土地农田,经过实践测算,每万平方米住宅建筑,使用空心砌块做墙体材料比使用粘土砖可节省粘土2820m3,按平均开挖2m深土方,可节省土地面积1410m2,就施工组织来讲,砌空心砌块可比砌粘土砖减轻劳动强度10—20％,提高劳动效率30—43％,因此应大力提高空心砌块的使用率。     

砌块挡土墙优化设计

在分析混凝土小型空心砌块基本特性的基础上，应用三维有限单元法对混凝土空心砌块挡土墙中的砌块进行了应力分析，并以砌块挡土墙结构为例，讨论了砌块建筑的优化设计问题。     

利用攀钢钛矿渣生产混凝土空心砌块的试验研究

运用正交试验的方法对利用攀钢钛矿渣生产混凝土空心砌块进行了研究。研究结果表明：钛矿渣取代砂、石和部分水泥后，可以生产出性能满足GB8239-1997《普通混凝土小型空心砌块》要求的混凝土空心砌块。所开发的砌块强度达到MU10等级，确定了生产混凝土空心砌块的最佳配方。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the