And the optimal content of materials are : super plasticizer nf 0 . 8 % , fly ash 20 % , ps 20 ~ 30 % , zeolite powder 20 % , sf 5 ~ 8 % ; the negative influence of hill sand powder should be avoided by controlling of powder content and the use of active additive and super 本文通过对配制的山砂高性能混凝土和普通混凝土的拌合物性能、力学性能、长期性能及耐久性能的研究,得到流动性、保水性、粘聚性等性能优良的山砂高性能混凝土。
At the same time , the factors affecting dry shrinkage and durability are also analysed . the mix proportion parameters of hprrc are determined , while hprrc is good in workability ( slump 30mm ) , and can meet the needs of opening traffic within 12 ~ 48h . 5 4 、采用多元回归分析方法探讨了影响12h 、 24h 、 28d高性能快速修补砼抗折强度的因素；还对影响hprrc干缩性能、耐久性能的因素进行了分析，确定了hprrc配合比设计参数。
Edge collapse , honeycomb and surface voids in the slipform paving cement concrete and shrinkage of hardening concrete used in highways are studied in this paper , which is a part of western traffic project , frost resistance of cement concrete , supported by traffic ministry of china 本文针对交通部西部交通项目水泥混凝土抗冻融耐久性能研究中高速路面混凝土滑模施工过程中的塌边和麻面以及硬化混凝土收缩等现象展开研究。
The high content of industry waste slag lead to a good benefit on social , economy and environment , so the study have been offered the solid theoretical foundation and the technique direction for the innovation of wall material in china 实践证明， hsfab和salc具有优良的物理力学性能、耐久性能以及较高的性价比。由于工业废渣利用率高使其具有良好的社会效益、经济效益和环境效益，为墙体材料的改革提供了坚实的理论基础和技术指导。
And production fashion is selected optional for assurance of the material character of hpch . the hpch material , in which the compound technique route of polybasic components is applied , has better properties such as high workability , high durability , low ion transference rate and so on 采用多组份复合技术路线配制出高工作性、高耐久性、低离子迁移率的hpch材料，对其宏观物理力学性能、耐久性能和微观结构进行了分析研究。
Inorganically post - installed bars although have the ideal durability and heat - resistance , its bonding strength is low . it is unable effectively to transmit the load , the anchor depth is too big . these restricted application of the inorganic anchoring material in the post - installed fastening project 无机植筋虽有较理想的耐久性能和耐高温性,但其粘结强度较低,无法有效传递荷载应力,锚固深度太大,这制约了无机粘结材料在植筋工程中的应用。
Different from average lightweight aggregate , high strength and performance lightweight aggregate possesses characteristics with higher strength , lower absorption of water and super fractions and is applicable for production of outstanding concrete with better workability , physical mechanical property and durability 高强优质轻集料不同于普通轻集料，它的筒压强度较大。吸水率较小、级配好，适宜于配制工作性能、物理力学性能和耐久性能良好的优质混凝土。
The study on salc includes : 1 ) the study on the harmonization between aeration rate and melts thickly rate ; 2 ) the study and application of the new multi - function composite additive ( nmca ) ; 3 ) the study on the durability of salc ; 4 ) the designation of the structure of new multi - functional unbearing compound wall and fast equipment mold , etc . the results show : the additive can improve the harmonization of the workability and mechanics characteristic of salc to a certain extent ; improve the volume stability of salc under different environment by enhancing the resistance to the freeze and thaw , dry and wet circle and drying shrinkage 在salc的研究方面，主要包括发气速度和稠化速度的协调性研究、新型多功能复合外加剂的研制、耐久性能的研究以及新型多功能非承重复合墙体结构及其浇注成型的快速组装模具设计等内容；结果表明：科学合理的引入辅助外加剂在一定程度上使salc材料的工作性及相应物理力学性能得以最佳匹配，增强了salc材料对冻融循环、干湿循环及干燥收缩的抵抗能力，使salc在不同的环境下均具有较好的体积稳定性。
This paper unfolds engineering disposition and theoretical research of negative temperature high performance concrete ( nthpc ) with the damage of many factors motivation , the project background based on qing - zang railway engineering , which is one of four - emphasized engineering during the tenth five - plan . due to the difference of environment of construction and service between nthpc and ordinary concrete , and therefore durability of nthpc is required to higher level . at a first , nthpc must avoid frozen damage at early age and possess anti - freezing property at later period , in order to meet engineering practicable application need , and this are two emphasized and difficult problems , as for nthpc ; by means of mechanism analysis about deicing - agent ingredient and anti - freezing at early period , adopting composite technique routine of mineral addition + anti - freezing element + water - reducer4 - air - entraining + anti - erosion of steel component etc , based on orthogonal experimental approach , fd - 1 composite functional admixtu re was manufactured , which has more property and orientation on qing - zang railway 负温混凝土由于和普通混凝土在施工环境及服役环境上存在的差异，因此表现为比普通混凝土更为较高的耐久性要求；负温混凝土首先要避免早期的冻害以及具备长期抗冻性能，才能够满足工程实际应用的要求，这也是负温混凝土必须解决的两大技术关键；通过对目前常用防冻剂组分作用机理的分析研究及混凝土早期防冻机理探讨，采用矿物外加剂+防冻组分+高效减水剂+引气+阻锈组分功能复合的技术路线，通过正交试验设计复配了适应青藏铁路工程要求的专用多功能复合型外加剂fd - 1 ；并在此基础上配制不同等级负温高性能混凝土，开展一系列包括硫酸盐侵蚀、氯离子渗透、抗冻融循环、收缩及耐磨性等耐久性能研究；通过对fd - 1组分和掺量的调整，优化负温混凝土在施工特性、力学指标和耐久性三个方面的兼容、协调性。
In this paper based on the study of composition structure and properties of steel - making powder , relationship and laws between composition , structure and properties of cement and concrete with steel - making powder are revealed by testing composition and microstructure of hydration products , physical properties , workability and comprehensive durability of cement and concrete with steel - making slag powder . it provide theory reference and technology support for application and spread of steel - making slag powder mineral additive 本文在深入研究钢渣粉本身的组成、结构与性能关系的基础上，通过水化产物的组成与微结构测试、混凝土宏观力学性能、工作性能及长期耐久性能实验，揭示了含钢渣粉水泥混凝土的组成、结构与性能之间的相关规律，为钢渣粉掺合料的应用与推广提供了理论依据与技术支撑。
