粉煤灰综合利用 2016no.4 FLY ASH COMPREHENSIVE UTILIZATION 试验与应用 大掺量粉煤灰再生混凝土配合比试验研究 Experimental Study on Mix Proportion Design of High Volume Fly Ash Recycled Concrete 陈建国,凌贤宗 (1.广西壮族自治区水利科学研究院,南宁530023;2.广西水工程材料重点实验室培育基地,南宁530023) 摘要试验研究了水胶比、粉煤灰掺量和再生粗骨料取代率对大掺量粉煤灰再生混凝土抗压强度的影响。正交 试验结果表明,大掺量粉煤灰再生混凝土7d、14d、28d、56d、90d抗压强度的最主要影响因素为粉煤灰掺量,其次为水胶 比及再生粗骨料取代率,通过正交设计可以得出大掺量粉煤灰再生混凝土的配合比设计方法。 关键词:大掺量粉煤灰再生混凝土;正交设计;配合比;抗压强度 中图分类号:TU528.2文献标识码:A 文章编号:1005-8249(2016)04-0014-05 Chen Jianguo ,Ling Xianzong ( 1.Hydraulic Research Institute of Guangxi ,Nanning 530023 ; 2 .Guangxi Key Laboratory cultivation base construction of Water Engineering Materials ,Nanning 530023 ) Abstract :The influence of the amount of water binder ratio ,fly ash content and replacement rate of recycled coarse aggregate on the pressive strength of high volume fly ash recycled concrete were studied .The results of orthogonal experiments showed that ,the main factor affecting the 7d ,14d ,28d ,56d ,90d pressive strength of concrete were the content of fly ash ,followed by water binder ratio and replacement rate of recycled coarse aggregate .Through the orthogonal design ,the mix proportion design method of high volume fly ...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2011N.1 大掺量炉底渣在预拌砂浆中的应用研究 Application Study of Ready mixed Mortar with High Furnace Bottom Slag 郭锋钱中秋 (江苏尼高科技有限公司,江苏常州213141) 要针对炉底渣在预拌砂浆中部分替代河砂进行了试验研究在砂浆中复合使用表面活性剂与保水稠化剂组 分降低了炉底渣的蓄水量,测试了砂浆的工作性、抗压强度、粘接强度、抗开裂性能等基本性能指标。结果表明该砂浆 可操作性良好,保水率、力学性能、收缩率等指标,完全满足国家相关标准的要求。 关键词:炉底渣;预拌砂浆收缩率 中图分类号:TQ177.62 识码:A文章编号:1005-8249(2011)01-0027 GUO Feng ,QIAN Zhong-qiu ( JiansuNigao Science and Technology Co ..Changzhou 213141 .Jiangsu ,China ) Abstract :How to partly replace sand by furnace bottom slag in the ready-mixed mortar .Was teated the storage capacity of furnace bottom slag can be reduced by pounding surfactant and thickening powder in the mortar .The working performance ,pressive strength ,bond strength ,and anti-cracking property the mortar was tested .The results showed that the mortar had good manipuility and the water retention rate mechanical properties and shrinkage rate were fully meeting the requirements of relevant national standards . Key words fumace bottom slag :ready-mixed mortar ;shrinkage rate 炉底渣是火力发电厂、城市集中供热系统等工业 和民用燃煤锅炉底部排出的粒径较粗的灰渣,一般为 1原材料与试验方法 碎石多孔结构,主要成分是SiO2、Al2O3和Fe2O3。炉 1.1原材料 底渣在各大发电厂、热电厂的日产量都相当大,一般每 原材料包括:P.042....
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2012N.2 筑科 大型岩石结构面直剪试验模拟材料研究 Simulating Material Study on Direct Shear Test of Mass Rock Structural Plane 王晓翠 (浙江建设职业技术学院建筑工程系,杭州市311231) 要:根据相似原理和岩石结构面直剪试验的要求,选择高强水泥砂浆作为模拟材料。通过严格控制原材料,优 选配合比,掺加硅粉和高效减水剂等措施,可以制备出强度达到72Mpa的匀质水泥砂浆来模拟岩石材料,从而解决了大 型岩石结构面直剪试验取样困难的问题。 关键词:岩石结构面高强水泥砂浆模拟材料配合比 中图分类号:TG115.5 文献标识码:A 文章编号:1005-8249(2012)02-0045-03 Wang Xiao-cui ( Departmentof civil engineering ,Zhejiang College of Construction ,Zhejiang ,Hang zhou 311231 ,China ) Abstract :Cement mortar of high strength is selected as simulation material on the basis of resembling theory and demanding of direct shear test of rock structural plane .Uniform cement mortar of above 72Mpa can be manufactured by taking a series measures such as raw material quality control ,mixing ratio optimization ,using siliceous powder and superplasticizer .Thus the Sampling difficulty of direct shear test of mass rock structur . al plane is solved Key words :rock structural plane ;cement mortar of high strength ;simulation material mix proportion 结构面是工程岩体的重要组成部分,岩体是由结 1相似材料的相似原理及选择原则 构面纵横切割而成。因此岩体结构面对岩体的变 形和破坏起着控制作用。工程实践反复证明,岩体的 模拟试验要求模型材料具有与原型材料类似的结 失稳源于结构面,岩体的破坏机制在很大程度上受结 构和破坏特征...
工技术 2017年8月上 54 CONSTRUCTION TECHNOLOGY 第46卷第15期 do:10.7672/sgjs2017150054 外立面悬挂装饰清水砖幕墙施工技术 袁瑞青 (中铁建设集团有限公司,北京100040) 摘要]在建筑外墙悬挂一道稳固的免装饰的清水砖墙(也可称为砖幕墙),不仅提高了建筑的保温、隔热、吸音能 力,而且室内环境达到了恒温恒湿的宜居效果。在外立面悬挂清水砖墙需采用一种托架体系,其施工工艺国内罕 见,体系复杂,而且这种砖墙围砌起来的民用建筑,在我国也逐步普遍应用。如何在悬挂施工方面采取措施确保施 工安全和成型效果是需要解决的重点。结合某工程实例,重点研究在施工过程中如何将砖幕墙施工中悬挂体系处 理后提高整个体系的稳定性,杜绝安全事故的发生 [关键词]装饰;清水砖;幕墙;悬挂体系;稳定性;施工技术 中图分类号]TU767 [文献标识码]A 文章编号]1002-8498(2017)15-0054-03 Construction of Facade Hanging Decorative Fair-faced Brick Curtain Wall YUAN Ruiqing China Railway Construction Group Co ..Beijing 100040 ,China ) Abstract :Hanging solid and no decoration brick wall on the exterior walls of the building namely brick wall )is not only can improve the building thermal insulation ,sound-absorbing capacity ,but indoor environment achieves livable effect of constant temperature and humidity .Hanging fair-faced brick wall in the facade needs to adopt a bracket system ,and the construction technology of this system is rare at home ,as well as is plex .This brick wall civil building is gradually widely used in China .How to take measures in suspension construction to ensure construction safety and molding effect is the key poin...
2015年7月上 施工技术 第44卷第13期 CONSTRUCTION TECHNOLOGY doi:10.7672/gjs2015130121 外爬塔式起重机附着墙体加固分析 王三港,李庆达,乔伟,杨磊 (中建三局集团有限公司,北京100097) 摘要]根据项目外爬塔式起重机受力特点,建立塔式起重机及支撑架一体化计算模型,确定塔式起重机支撑架最 不利工况并根据塔式起重机支撑架附着墙体反力计算墙体配筋对墙体进行加固。加固措施解决了“一”字形剪力 墙因墙体变薄引起的墙体结构承载力不足、平面外稳定及墙体开裂等问题,并满足在混凝土强度未达到结构设计 要求时顺利爬升。 关键词高层建筑塔式起重机加固承载力;稳定性 中图分类号]TH213.3 文献标识码A 文章编号1002-8498(2015)13-0121-04 Reinforcement Analysis on Wall Attached of Tower Crane Wang San'gang ,Li Qingada ,Qiao Wei ,Yang Lei China Construction Third Engineering Bureau Group Co .Ltd .Beijing 100097 ,China ) Abstract :According to the particularity of tower crane ,the calculation model of integration of tower crane and support frame was established .The worst working condition of support frame was determined .And the wall was reinforced by means of the reaction force calculation of tower crane ,support frame attaching to the wall .The measures solved the issue of the insufficient of the structure bearing capacity ,the out-of - plane stability ,the wall cracking ,which caused by the attenuation of the "" shapedwall .And it made the tower crane climbing when concrete strength can not reach the design strength Key words :tall buildings ;tower cranes ...
2015年3月上 施工技术 第44卷第5期 CONSTRUCTION TECHNOLOGY o:10.7672/sgjs2015050007 外挂内爬式塔式起重机支撑系统的安装与拆除 王淇,于建伟,邹东阳,刘青峰,温亮 (中国建筑第八工程局有限公司钢结构工程公司,上海200125) [摘要]超高层建筑施工中通常采用附着式或内爬式塔式起重机,内爬式塔式起重机的常见爬升方式是在超高层 建筑的电梯井或线井中布置支撑系统然后往上爬升,这种支撑系统的安装相对较为简单;外挂内爬式支撑系统的 安装相对较为复杂。综合具体项目总结的施工经验和相关的施工规范,对外挂内爬式塔式起重机支撑系统的安装 与拆除工艺进行了详细介绍。 关键词】建筑机械;塔式起重机;外挂内爬式塔式起重机;支撑系统;安装;拆除 中图分类号]TH213.3 文献标识码]A 文章编号]1002-8498(2015)05-0007-03 Installation and Demolition of Support System of External Hanging and Interior Climbing Tower Crane Wang Qi ,Yu Jianwei ,Zou Dongyang ,Liu Qingfeng ,Wen Liang Steel Structure Engineering Company of China Construction Eighth Engineering Division Co .Ltd .Shanghai 200125 ,China ) Abstract :Attached tower crane or interior climbing tower crane is usually used in construction of super tall building .Common climbing mode of interior climbing tower crane that support system is arranged in elevator shaft or line shaft of super tall building ,the installation process of the support system is simple .The installation process of the support system of external hanging and interior climbing tower cranes is relatively plicated .Based on concrete project ,construction experience and related con...
2013年2月上 施工技术 第42卷第3期 CONSTRUCTION TECHNOLOGY Do1:10.7672/g2013030031 外墙岩棉保温板薄抹灰施工技术 王全逵,苑伟松,刘坤 (中建二局第四建筑工程有限公司,天津300457) [摘要]外墙岩棉保温板薄抹灰施工技术是近年来刚刚开始使用的新型外墙保温系统。结合工程实践,为克服普 通岩棉板吸水量大、抗拉强度低及防火性能低等缺点,采用外墙岩棉保温板薄抹灰施工技术,有效解决了该问题。 详细介绍了材料性能、施工工艺及施工要点。结果表明,该技术的应用有效降低了造价,减轻了外墙面荷载,取得 了良好的抗裂防护效果。 [关键词】保温;岩棉板;网格布;施工技术 中图分类号]TU761.12 文献标识码 章编号】1002-8498(2013)03-0031-04 Construction of Thin Plastering External Thermal Insulation with Rock Wool Board Wang Quankui ,Yuan Weisong ,Liu Kun ( TheFourth Construction Engineering Company .of China Construction Second Engineering Bureau ,Tianjin 300457 ,China ) Abstract :Thin plastering external thermal insulation with rock wool board is a new external wall insulation system .Normal rock wool boards have the defects that they absorb a large amount of water and have low tensile strength .The application of thin plastering external thermal insulation with rock wool board successfully solved these problems .The material performance ,construction process and construction key points are introduced in detail .Engineering practice results show that this construction technology reduced the cost ,relieved the loads on external walls and obtained good anti...
施工技术 2017年2月下 CONSTRUCTION TECHNOLOGY 第46卷第4期 do:10.7672/sgjs2017040092 外墙外保温装饰材料黏结强度检测技术 苏云辉,郭春泉,白小灵,热西提,王永明 (新疆建筑科学研究院有限责任公司,新疆乌鲁木齐830054) 摘要】随着胶粘剂在建筑物饰面、建筑节能工程及建筑结构加固工程中的广泛使用,JGJ110标准中的黏结强度试 验方法被很多建材黏结强度检测试验所引用或采纳,针对黏结强度试验方法在各种工程实际中的使用情况,就一 些具体问题进行分析和思考。 关键词]黏结强度;测试胶粘剂;外墙外保温;饰面层 中图分类号]TU56 文献标识码]A 章编号】1002-8498(2017)04-0092-03 Detecting Technology for Cohesive Strengthen of External Thermal Insulation System Decoration Materials Su Yunhui ,Guo Chunquan ,Bai Xiaoling ,Rexiti ,Wang Yongming ( XinjiangResearch Institute of Building Sciences LLC ,Urumqi ,Xinjiang 830054 ,China ) Abstract :With the widely application of adhesive in building decoration ,building energy-saving building and building strengthen engineering ,the cohesive strengthen test method in JGJ110 standard are used in building material cohesive strengthen test .According to use condition of the test method in vary engineering ,the authors put forward some practice problems . Key words :cohesive strengthen ;testing ;adhesives ;external thermal insulation system ;decoration 近几年,随着外墙外保温所用材料和施工工艺 随着外保温材料和施工工艺发展的多样性,虽 的迅猛发展,对检测人员的技术要求及检测方法和 然很多外保温工程中已减少了对胶粘剂使用的依 类型也不断带来新的挑战。根据现阶段现场实际 赖性,但在一些基本的施工过程中,依据相应的规 黏结强度检测...
工技术 2015年5月上 30 CONSTRUCTION TECHNOLOGY 第44卷第9期 do1:10.7672/sgjs2015090030 外墙外保温装饰一体化系统施工工法 李勇 (湖南省第二工程有限公司,湖南长沙410015) 摘要]外墙外保温装饰一体化系统施工工法是将外墙保温和装饰合二为一先在工厂集成加工,然后在施工现场 进行安装,一次施工即可完成保温和装饰两个工序,既满足了外墙保温要求,又确保了外墙立面装饰效果。与传统 工艺相比较,本工法具有工艺简便、工期短、质量优、综合成本低、绿色环保等特点,取得了良好的经济效益和社会 效益。 关键词】装饰装修;外保温;一体化施工;节点 [中图分类号]TU767.5 文献标识码]A 文章编号】1002-8498(2015)09-0030-03 Construction Method for Exterior Insulation Decoration Integration System Li Yong ( Hu'nan No .2 Engineering Co .,.Changsha ,Hu'nan 410015 ,China ) Abstract :The construction method for exterior insulation decoration integration system is bining external insulation and decoration integrated in the factory first ,and then installing in the construction site .It can plete two processes for one time .The construction method can both meet the requirement of exterior wall thermal insulation and ensure the exterior facade decoration effect .Compared with the traditional process ,this method had advantages of simple process ,short construction period ,good quality ,low prehensive cost ,green environmental protection and other characteristics ,which has obtained good economic and social benefits Key words :decoration ;exterio...
施工技术 2010年3月 CONSTRUCTION TECHNOLOGY 第39卷第3期 外墙外保温体系自重应力和温度应力分析 王满生,杨威,黄振利2 (1.北京市房地产科学研究所,北京100021:2.北京振利建筑工程有限责任公司,北京100073) 摘要】以三明治外墙外保温体系为例,采用北京地区的冬夏季环境温度和日照条件,分析计算外墙外保温体系的 整体受力状况。主要考虑体系的自重应力和温度应力的影响。通过分析得出界面层和抹面层(抗裂砂浆层和装饰 层)处平行于基层墙面上的温度应力是影响整个体系稳定性和耐久性的主要因素,同时认为当前外墙外保温体系 相应标准中缺少材料的拉压应力的力学性能指标,需要引起相关部门的重视。 【关键词]外墙外保温体系;温度应力;力学性能参数;稳定性;耐久性 中图分类号TU111.41 文献标识码]A 文章编号]1002-8498(2010)03-008203 Deadweight Stress and Temperature Stress Analysis of External Wall External Insulation System Wang Mansheng' ,Yang ,Huang Zhenli ( 1.Institute of Beijing Real Estate Science Technology Research ,Beijing 100021 ,China ; 2 .Beijing Zhenli Construction Co .Lad .Beijing 100073 ,China ) Abstract :Taking some sandwich system as example ,the authors analyze and calculate global mechanical status under surrounding temperature and sunshine condition winter and summer in Beijing area and mainly think about influence of deadweight stress and temperature stress on global mechanical status .By analyzing ,it is found out that the key factor ,which can influence on stability and durability of this system ,is temperature stress on interface and mortar layer ,which horizontally parallels to wall .Also...
2015年2月上 工技术 第44卷第3期 CONSTRUCTION TECHNOLOGY do:10.7672/sgjs2015030079 外加剂对聚合物改性水泥砂浆凝结时间的影响 冯虎,高丹盈,徐洪涛2,赵亮平 (1.郑州大学土木工程学院,河南郑州450001:2.郑州大学综合设计研究院有限公司,河南郑州450001) 摘要]通过系统试验,研究了聚合物改性剂硅烷偶联剂、减缩剂及消泡剂对聚合物改性水泥砂浆凝结时间的影 响。发现聚灰比(聚合物水泥含量比)与偶联剂、减缩剂及消泡剂掺量均对水泥砂浆的凝结时间影响显著:聚合物 改性水泥砂浆的凝结时间较普通水泥砂浆有所延长,且随着聚灰比的增加而增大,但增长程度越来越小;随着3种 外加剂掺量的增加凝结时间均表现出增大的现象,但增长速率随聚灰比的增加而减弱,聚灰比的影响程度高于外 加剂无水酒精作为偶联剂稀释剂时使聚合物改性水泥砂浆凝结时间顺延程度加剧。从凝结时间考虑,最优的聚 合物和外加剂掺量如下:聚灰比0.1,消泡剂3%c,偶联剂为3%c,减缩剂宜≤2%最后对以上3种外加剂的作用机 理做了探讨。 关键词]建筑材料;砂浆聚合物水泥砂浆;外加剂凝结时间聚灰比试验研究 中图分类号]TU526.812 [文献标识码]A 文章编号]1002-8498(2015)03-0079-06 Effect of Admixtures on Setting Time of Polymer Modified Cement Mortar Feng Hu' ,Gao Danying' ,Xu Hongtao2 ,Zhao Liangping' ( 1.Department of Engineering ,Zhengzhou University ,Zhengzhou ,He'nan 450001 ,China 2 .Unirersity Multi-functional Design and Research Academy ,Zhengzhou ,He'nan 450001 ,China ) Abstract :An experimental study on the relativity between polymer cement ratio ,silence coupling agent defoamer ,shrinkage reducing admixture and the setting time of polymer modified cement mortar was carried out .The results show that the influence of polymer cement ratio ,coupling agent ,defoamer and shrinkage reducing ad...
2017年8月上 拖工技术 第46卷第15期 CONSTRUCTION TECHNOLOGY do:10.7672/sgjs2017150009 外倾式变曲率竹饰面弧墙模板支撑 一体化施工方案设计 王洪腾,沈映,陆建飞,韩超,徐晗 (1.中天建设集团有限公司,浙江杭州310020;2.中天建设集团浙江钢构有限公司,浙江杭州310008) [摘要]南宁万科大厦首层角部外倾变曲率竹饰面弧墙施工,改变常规模板加固体系和支撑加固体系分离的模式, 创新性地提出一种模板支撑一体化的加固体系。施工中采用增加弧墙内钢骨,通过焊接在钢骨上的对拉螺杆将施 工中的全部荷载传递至钢骨,并通过分阶段施工数值模拟分析,确保了模板支撑体系满足强度和刚度的要求。并 设计了钢筋桁架环箍和衬模+竹片的模板结构,解决了模板支撑体系中主楞抗弯刚度不足和竹片纹理施工效果的 难题。 关键词]高层建筑模板;支撑;变曲率数值模拟;方案设计 中图分类号TU755.2:TU731.2 [文献标识码]A [文章编号】1002-8498(2017)15-0009-05 Design of Integral Construction Scheme for Formwork Support of Curved Bamboo Wall with Outer-incline Bending Curvature WANG Hongteng' ,SHEN Ying' ,LU Jianfei ,HAN Chao ,Han ( 1.Zhongtian Construction Group Co ..Hangzhou ,Zhejiang 310020 ,China ;2 .Zhejiang Steel Structure Zhongtian Construction Group Co ..Hangzhou ,Zhejiang 310008 ,China ) Abstract :the construction of bamboo facade are wall of Nanning Vanke Building ,the mode of separation of conventional formwork reinforcement system and support reinforcement system is changed and a kind of reinforcement system of formwork and support integration is innovatively proposed in the first layer corner of Nanning Vanke Building .During the construction ,the steel bar is in...