The scc has the following advantages : remarkably reducing the noisy pollution and the worker s labor intensity in construction , deducing the rough surface or segregation because of missing - vibration or excessive - vibration in conventional construction , resolving the quality - defect problems resulting from lacking - vibration in the section of complex shapes and densely - packed reinforcement area . at the same time , large of industrial solid waste such as fly ash and blast furnace slag is utilized in the proportioning of scc . it is helpful in comprehensive utilization of resource and environment protection , so the scc belongs to " green concrete " , it is a branch of hpc which will be developed in the future 这种混凝土可以显著降低混凝土施工中的噪音污染；大幅度减轻工人的劳动强度；减少传统混凝土施工中因漏振或过振造成的麻面或离析；解决了配筋密集、结构复杂部位因振捣不足而造成的质量缺陷问题；同时，由于自密实混凝土在配制中，大量利用粉煤灰、高炉矿渣等工业固体废弃物，有利于资源的综合利用和生态环境的保护；从而被誉为“绿色混凝土” ，是未来混凝土向高性能发展的方向之一。
The polyacrylonitrile have no use to improve the homogeneity of concrete . the homogeneity of concrete have bad effect to compression strength , but the effect to chloride ion coefficient of diffusion is not obvious . for concrete used generality , if it ’ s homogeneity is acceptable ( k 7 % ) , the percentage of lost of the compression strength will lower than 10 % 匀质性对抗压强度的影响较大,对氯离子渗透系数的影响不明显,对于一般用途的混凝土,匀质性良好( k 4 % )时,强度损失在5 %以内,匀质性合格( k 7 % )时,强度损失在10 %以内;对于深层浇注的混凝土,离析度k 3 %时上下层强度的差异率才能保证在5 %以内。
Under the direction of such theories , the influence of the composition of the concrete to the workability , mechanical property and durability of hplc is analyzed systematically ; the key technology of the preparation of hplc was grasped . the theory of strength improvement of subsidiary bonder is detected , special additive - fdl for hplc is made , lc40 - lc60 hplc with the slump over 18cm , the slump flow over 50cm , segregation degree below 5 % , small drying shrinkage , high tension strength and long durability is prepared . the concept and experimental method of the segregation degree of the mixture is put out and the analytical system of high performance hplc is built 以设计理念和设计理论为指导，系统研究了轻集料、辅助胶凝材料等组分及其配比参数对轻集料混凝土工作性能、力学性能和耐久性能的影响规律，探明了辅助胶凝材料对于轻集料混凝土的增强机理，研制出能够有效控制轻集料混凝土拌和物分层离析度和降低坍落度经时损失的专用外加剂fdl ，掌握了制备高性能轻集料混凝土的关键技术，制备出坍落度大于18cm 、扩展度大于50cm 、分层度小于5 、低干缩、高韧性、高耐久的lc40 lc60高性能轻集料混凝土。
On the backgrounds of researches inside and outside country , and cooperating experiments with theories analyses , the influence of different processing technology parameters and different sbs modifier sorts on the sbs modified asphalts " properties has been studied . at the same time , their microstructure are observed through fluorescence optical microscopy and scanning electronic microscopy , thus to direct modified asphalt production . on the above conclusion ' s basement , analysing some disadvantages of the storage stability test of sbs modified asphalt in the current specification , a new storage stability test apparatus is developed 本文在参考国内外研究的基础上，采用理论、试验相结合的方法，研究加工工艺参数以及改性剂种类等对sbs改性沥青性能的影响，并通过荧光显微镜、扫描电镜分析其微观形态，从而指导sbs改性沥青的生产；在此基础上，分析我国现行规范用来评价sbs改性沥青储存稳定性方面的不足，开发了新的试验仪，根据动态剪切流变试验结果和微观状态分析，提出一个新的指标? ?离析率r _ s来评价sbs改性沥青的储存稳定性；最后，针对不稳定的改性沥青提出改善措施，研究证明掺加增容剂和稳定剂是行之有效的方法。
Qualities . it emerges as one being regardless of any setbacks or failure in action , fearless of any difficulties and obstacles , persistent with strong determination and achieves the objective of the action . a person who has the indomitable quality , in order to reach the destination , on the way of execute decisions the person will always persist on the target , regardless of any obstacles 从意志这一心理过程里可以离析出几种意志心理品质，意志的顽强性品质（或称顽固性品质）是其中主要之一，它体现为在行动中不顾任何挫折与失败，不怕任何困难与障碍，而以坚韧的毅力顽强坚持，从而达到行动的目的。
The binders has supper fluidness 、 bonding capacity 、 water retentivity 、 filler properties , no segregation , no bleeding and supper mechanical properties after harden . it is one of high performance concrete . japanese have been researched self - compacting concrete from 1987 , and used more than 1 . 2millions litres 其拌和物具有良好的流动性、粘聚性和保水性,要求填充性能优异,不离析、不泌水且硬化后具有良好的力学性能,属于高性能混凝土( high - performanceconcrete )的一种。
Tests results show that the solidified mud casting foundation both under water and on land can meet the bearing capacity demands of the container yard of yantian harbor in shenzhen city , and that underwater casting is favorable to the increase of the later bearing capacity of the foundation if the segregation between water and mud is controlled 试验结果表明，水下和陆上浇筑情况的固化淤泥填筑地基均能满足深圳盐田港集装箱堆场对地基承载力的要求，水下浇筑时只要控制好固化淤泥中的水不离析，反而能促进固化淤泥后期强度的增长。
This paper deals with high fluid concrete in which high strength ceramsite made from shale was used as coarse aggregate . effects of cement content , water - cement ratio , sand percentage , mineral admixture , grading and pretreatment of lightweight aggregate on compressive strength and workability of high fluid structural lightweight aggregate concrete have been studied . the rules of water absorption of high strength lightweight aggregate under different pressure and effects on uniformity of high fluid structural lightweight aggregate concrete have been studied too 本文采用高强页岩陶粒，掺加高效减水剂配制大流动性结构轻集料混凝土，讨论了水泥用量、水灰比、砂率、矿物掺料及轻集料的级配和预湿方式对大流动性结构轻集料混凝土强度和工作性的影响；系统研究了高强陶粒在常压和压力下的吸水规律；研究了影响大流动性结构轻集料混凝土匀质性的因素，提出了解决大流动性结构轻集料混凝土分层离析的具体措施。
Lwac is becoming one of the important trends in the development of modern concrete . to solve the problems such as poor workability , large shrinkage value and crack easily of lwac , on the basis of systematic experiments , the author establishes lwac workability evaluation system and advances the testing method of pumping performance of lwac ; the control technology of discrete of lwac is introduced through analyzing structure formation process and establishing the mathematic model ; based on studying the strength source of lwac and the function mechanism of artificial additive , this paper not only confirms some major factors which affect concrete strength but explores the preparation technology route of high strength lwac ; the different effects of several fibers in lwac have been studied , and the fiber is introduced in pumping lwac to improve its crack - proof performance 本文针对轻集料混凝土工作性能差、收缩变形大、易于开裂等问题，根据大量实验建立了高强轻集料混凝土工作性能的评价体系，提出了高强轻集料混凝土可泵性的测试方法；通过分析轻集料混凝土的结构形成过程，建立了轻集料混凝土拌和物物料运动的数学模型，提出了防止轻集料混凝土分层离析的技术措施；通过对轻集料混凝土强度来源和矿物掺合料的作用机理的深入研究，确定了影响轻集料混凝土强度因素的主次关系，提出了配制高强轻集料混凝土的技术路线；研究了纤维在轻集料混凝土中的增强增韧、减少收缩的作用机理。
