关键词:再生混凝土;矿物掺合料;高性能再生混凝土;微观结构;再生骨料取代率 中图分类号:TU528.0文献标识码:A文章编号:1005-8249(2013)04-0017-04 LI Ying (School of Civil Engineering,Qinghai University, Xining, 810016) AbstractInorer to produehigperfomnce recled cretebybilding wastey ahand silcafue weremixd into recycld con crete searatelyand jointly。
The varistion tendenyf cmpreive strengthand micrtructure were studid.Itisdmntratd tht with thein- resanhldhbl uence ofreledagregateplacmnt ratenpreive strengthisnotobvious withthedevelopmnt ofbydratin ageWhenmixedy ash andsilftreytlthivstnthdtdeiifclywihtheldgatla ment rale, and the microtruture tends to be more densely. Key wordreeycledcncreteminerldmixturehighperformancereycld concretemicrstructue;reycldagregte replaement rte 高性能混凝土凭借自身良好的耐久性、工作性、较天然骨料之间的差异必然造成再生混凝土内部的界面 高的强度等特性已成为混凝土未来发展的主要方过渡区结构疏松多孔[2-,从而会直接影响再生混凝 向,尤其是高性能混凝土中必不可少的第六组土的性能。
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2015NO.2 试验与应用 建筑垃圾低强度CFG桩桩身材料性质试验研究* Experimental Study on Material Properties of Construction Waste Low-strength CFG Pile 李天,姜裕华2,王殿宽2,陈甦 (1.苏州大学城市轨道交通学院,江苏苏州215131;2.苏州市市政建设管理处,江苏苏州215002) 摘要:对建筑垃圾(废混凝土)再生骨料的基本物理力学性质和不同配合比的建筑垃圾低强度(≤C7.5)CFG桩 桩身材料试件强度进行了试验研究,结果表明:(1)建筑垃圾再生骨料可满足作为低强度CFG桩桩身材料的骨料要求; (2)建筑垃圾低强度CFG桩柱身材料早期强度较低,但28-90d龄期内的后期强度仍有一定增长;(3)建筑垃圾低强度 CFG桩桩身材料中的粉煤灰掺量和粉煤灰取代水泥率可适当加大;(4)32.5复合硅酸盐水泥可用于强度等级小于C7.5 的建筑垃圾CFG桩桩身材料中. 关键词:建筑垃圾:CFG桩;配合比;材料性质 中图分类号:TU473.1 文献标识码:A 文章编号:1005-8249(2015)02-0019-04 Li Tian' Jiang Yuhua2 Wang Diankuan2 Chen Su' (1.School of Urban Rail Transportation Soochow University Suzhou Jiangsu 215131 China; 2.Suzhou Municipal Construction Administration Department Suzhou Jiangsu 215002 China) Abstract:The basic physical and mechanical properties of the recycled aggregate from the construction waste concrete)and the material strength of the construction waste low-strength(≤C7.S)CFG piles with different mix proportions have been tested in the laboratory The result shows:(1)The recycled aggregate is qualified to be the material of the low-strength CFG pile;(2)the early strength of the construction waste low -strength ...
iC29.240 Q /GDW 国家电网有限公司企业标准 Q/D13107.52018 代替Q/GDW13107.5-2014 110kV变电站用棒形支柱瓷绝缘子 采购标准 第5部分:棒形支柱瓷绝缘子 (C12.5-450)专用技术规范 Purchasing standard of ceramic station post insulators for 110kV substations Part 5 :Special technical specification of ceramic station post insulators (C12.5-450) 2019-06-28发布 2019-06-28实施 国家电网有限公司发布 Q/Dw13107.5—2018 目次 前言 1范围 2规范性引用文件 3术语和定义 4标准技术参数 5使用环境条件表 6组件材料配置表 编制说明 ...
粉煤灰综合利用 2013No.6 FLY ASH COMPREHENSIVE UTILIZATION 专题研究 废石膏泡沫混凝土性能及影响因素 The Performances of Waste Gypsum Foam Concrete and the Influence Factors 裴闪闪,张耀忠3,杨钱荣2,王冰3 (1.同济大学材料科学与工程学院,上海201804;2同济大学先进土木工程材料教育部重点实验室, 上海201804;3.上海同济建设工程质量检测站,上海200092) 摘要:研究了以脱硫石膏-矿渣粉-水泥复合胶凝材料体系为胶凝材料的泡沫混凝土性能及其主要影响因素。结 果表明,适当提高水胶比有助于泡沫混凝土起泡性和稳泡性。掺加硫铝酸盐水泥和水玻璃的泡沫混凝土性能劣化,这 两种材料不适合应用于泡沫混凝土制备中。掺加适量甲基纤维素、减水剂可较好地改善泡沫混凝土的性能。经优化研 究可得到容重低于1000kg/m3,强度大于6MPa的脱硫石膏泡沫混凝土。 关键词:泡沫混凝土;起泡性;稳泡性;脱硫石膏;孔结构 中图分类号:TU528.2 只码:A文章编号:1005-8249(2013)06-0010-04 Pei Shanshan' ,Zhang Yaozhong Yang Qianrong ,Wang Bing ( 1.School of Materials Science and Engineering ,Tongji University ,Shanghai 201804 ,China 2 .Key Laboratory of Advanced Civil Engineering Materials of Education Ministry ,Tongji University Shanghai 201804 ,China 3 .Shanghai Tongji Institution of Inspection on Construction Quality ,Shanghai 200092 ,China ) Abstract :This paper mainly studies on the properties of foamed concrete which uses desulfurization gypsum-ground slag-cement posite system as cementitious material and its main influence factors .The results show that ,increasing ratio of water to cementitious material helps to im - prove the foamability and fo...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2014NO.6 专题研究 废弃玻璃粉对活性粉末混凝土强度的影响 The Influence of Waste Glass Powder on Strength of RPC 汤婉,王淑,刘数华 (武汉大学水资源与水电工程科学国家重点实验室,武汉市430072) 摘要:研究了玻璃粉作为矿物掺合料替代部分水泥配制活性粉末混凝土(RPC)的可行性.研究了玻璃粉掺量、 细度以及养护温度对RPC强度的影响;采用数理统计分析方法进行数值处理,求得玻璃粉掺量、细度以及不同养护温度 与RPC强度间的多元线性回归方程,分析三个因素的影响规律.试验结果表明:玻璃粉可作为掺合料加入RPC中并提 高其强度;当玻璃粉掺量为10%、研磨1h、养护温度为80℃时试件的抗压强度最佳. 关键词:RPC;玻璃粉;强度;统计分析 中图分类号:TV42*3 文献标识码:A 文章编号:1005-8249(2014)06-0007-06 Tang Wan Wang Shu Liu Shuhua (1.Shanghai Tongji Institution of Inspection on Construction Quality Shanghai 200092 China 2.School of Materials Science and Engineering Tongiji University Shanghai 201804) Abstract:The feasibility of glass powder working as mineral admixtures to replace part of cement in preparation of reactive powder concrete (RPC for short)is studied in this paper.The effect of the fitness of glass powder glass powder dosage and curing temperature on the pressive strength of RPC is analyzed.Mathematical methods are used for data processing to obtain the multiple linear regression equation which shows influencing rule of content and fineness of glass powder and curing temperature on RPC strength.The results show that the glass powder can be added as an admixture in RPC to improve its pressive strength and the strength of the specimens is highest when the glass powder content is 10% grinding time is1 h and curing temperature is80℃. Key Words:RPC;glass powder;pressive strength;statistic analysis. 随着建筑行业的高速发展,结构工程对建材的力...
关键词:废弃混凝土;再生砂;再生粉体;干混砌筑砂浆;力学性能;抗冻性 中图分类号:TU57*8.1文献标识码:A文章编号:1005-8249(2016)02-0011-04 Kong Zhe ,Li Qiuyi, Guo Yuanxin, Han Shuai Mo Jian ( Collaborative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao Technological University, Shandong Qingdao 266033) Abstract: Using waste concrete product to prepare reeycled fine aggregate and reycled power, which is used in drymixed masonry mrtar. Through adjusting water consumption o control the consistency in the range of 7 80mm, the effet of basic propeties, mechanical properties and fst resistane fdrymx masymtarnthedifrent ctent of reycledpwdeanbineto sand rats stdie.he results shwthat t basic properties of mortar have good linear relationships with the changes of content of recycled powder and binder to sand ratio. When the binder to sand ratio being 1:3 and the content of recycled powder being 10%, the presive strength at 28d is 35.0MPa and dereases only by 8.1% without ading reycldpowder, and the frost resistance f mortar cmly with specification. KeyWodwsteel leixmyahalstsisa 目前,我国正处于城市化全面发展的阶段,庞大的展领域,也是符合当今时代要求的绿色建材,而且这是 建设工程必将产生大量的建筑垃圾,其中废弃混凝土从我国自身情况出发而走出的一条中国建筑垃圾资源 约占40%。
19 当代化工研究 技术应用与研究 2016·06 并网型风电机组软并网控制研究 赵文武 国华(呼伦贝尔)新能源有限公司内蒙古021400) 要:风力发电技术一直是一个比较热门的课题。因异步发电机的风电机组对并网要求低,拉制简单,并网运行稳定受到了研究人员更多 的青睐。但是当异步电机直接并入电网时,冲击电流高达其额定电流的6至8倍,甚至10倍以上,这必然会给电机造成严重冲击,甚至可能影响 到其他联网机组的正常运行。普遍采用软并网控制系统来解决这一问题。本文将使用目前被广泛采用的结构简单性能可靠的定桨距风力发 电机组,从软并网系统结构及主电路结构分析入手,对并网型风电机组中的发电机的软切过程进行仿真分析,展开对并网型风电机组软并 网控制系统的研究,并总结给出并网型风电机组软并网系统适用的条件和控制方法 关键词:冲击电流;软并网控制系统;主电路;可控硅触发;仿真 分类号:T文献标识石 Research on SOFT CUT-IN Control of Grid-connected Wind Turbine Generator Zhao Wenwu ( Guohua(HulunBuir )New Energy co .,LTD ,Mongolia ,021400 ) 1bstract :Wind power generation technology has always been a popular topic .Because the wind turbine generator of asynchronous generator has the characteristics of few requirement for grid connection ,simple control and stable grid connection operation ,it bees more popular amon g researchers .But when the asynchronous motor is merged directly into power grid ,and the surge current up to six to eight times of the rated cu rrent ,even more than 10 times ,this will inevitably causes serious impact to lectrical machine ,even affects the normal operation of other grid - connected unit .SOFT CUT-IN control system is widely used to solve this problem...
粉煤灰综合利用 2014N0.2 FLY ASH COMPREHENSIVE UTILIZATION 专题研究 干湿循环和暴露对混凝土氯离子结合能力相关性研究* Correlation Research of Concrete Chloride Ion Binding between Exposure and Wet-dry Cycle 张立明1,李长成,何忠茂3 (1.吉林交通职业技术学院,吉林长春130121;2甘肃土木工程科学研究院,甘肃兰州730020) 摘要:进行了盐湖现场暴露和干湿循环环境下钢筋混凝土梁腐蚀试验,分别测定了不同试验环境下钢筋混凝土梁 在不同深度的总氯离子浓度和自由氯离子浓度,运用回归分析干湿循环和盐湖现场暴露环境下混凝土氯离子结合能力 的相关性系数K与扩散深度、混凝土抗强度的关系.结果表明:随着氯离子扩散深度和混凝土的抗压强度的增加,氯离 子结合能力相关性系数呈指数函数形式递减,研究成果可用于利用干湿循环测定的氯离子结合能力来预测实体结构 不同深度内的氯离子结合能力. 关键词:干湿循环;现场暴露;钢筋混凝土;氯离子结合能力;相关性 中图分类号:TU528.0 文献标识码:A 文章编号:1005-8249(2014)02-0008-04 Zhang Liming? Li Changcheng' He-Zhongmao2 (1.JilinCommunicationsPolytechnic Changchun 130012;2.Engineeringtechnicof Gansu Lan zhou 730020) Abstract:Concrete corrosion tests under longterm immersion and field exposure enviroment were done.The concrete samples total and free chloride ion concentration were measured at different depth under different enviroment.With use of regression method the relationship between dif- fusion depths or concrete pressive strengths and chloride bind capacity correlation under immersion and exposure.The result shows that:Chloride bind capacity correlation decreased at a exponential function type with the increase of diff...
粉煤灰综合利用 2017NO.6 FLYASHCOMPREHENSIVEUTILIZATION 综述 工业废渣在沥青混凝土中的应用研究进展 Research and Application of Industrial Residue on the Asphalt Concrete 梁涛,刘小艳1,刘静,刘爱华²,刘开琼²,孙旭1 (1.河海大学力学与材料学院,江苏南京211100; 2.苏交科集团股份有限公司,江苏南京211112) 摘要:总结了国内外将工业废渣应用于沥青混凝土的现状,重点探讨了钢渣、矿渣、粉煤灰等工业废渣作为掺 合料,对沥青混凝土性能的影响。
将工业废渣用于沥青混凝土中具有很好的环境效益和经济效益,发展前景广阔。
关键词:工业废渣;沥青混凝土;钢渣;矿渣;粉煤灰 中图分类号:X757,X773文献标识类:A文章编号:1005-8249(2017)06-0068-06 Liang Tao,Liu Xiaoyan,Liu Jing,Liu Aihua,Liu Kaiqiong,Sun Xu CollefMaMtlHivesitanjin Abstract: This papeummarizes thestas of indstaesideused inasphalt cnrel athme an abmadand fouses on th perfmane cane of asphalt concrete when admixing the steel slag, slag andy ah. Asphalt conrete peaed frmindustrial residehas good nvirment and ecnmi benefit, which has broad prospects and development. Keywords:industrial waste; asphalt concrete; steal slag; slag; Fly ash 道路网络是现代交通系统中最重要的元素之一, 生产也不断蓬勃发展,越来越多的工业废渣也随之产 据英国统计,其在2009年用于道路养护中的预算就生。