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1,张耀忠3,杨钱荣1 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:研究了以脱硫石膏一矿渣粉-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索.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文献标识码:A文章编号:1005-8249(2013)06-0010-04 Pei Shanshan' Zhang Yaozhong' Yang Qianrong.2 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 foam stability Adding sulphoaluminate cement and sodium silicate into foam concrete deteriorates properties of it which preans the two kinds of additive are not suitable to be applied to preparation of foamed concrete.However methyl cellulose and water reduc- ing agent can effectively improve its properties.Op...
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION2014 NO.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。
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 TongjiInstitution of Inspection on Construction Quality, Shanghai 200092,China 2. School of Materials Science and Engineering,Tongji University,Shanghai 201804) Abstract: The esility f glas powder working as mineral admixtues toreplace par of cement in preparation of reactive powder conecete (RPC fr shisstudied in this papeheffet f thefitess of glass pwer,glass pwder dse,anduring tmperature on the resive strength of RPC is analyed.Mathematial methods are used for data proceing to obtain the multipe linearregresson eqution which shws iha added as anadixture n RPC toimprove its pressvestrength,and the strengthf the specimens ishighest when the glass powder cntent is 10% ,grinding time is 1h and curing temperature is 80°℃. 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也具有经济效益。
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2016NO.2 试验与应用 废弃混凝土制备干混砌筑砂浆的试验研究* Experimental Research on Waste Concrete Preparing Dry-mixed Masonry Mortar 孔哲,李秋义,郭远新,莫建,韩帅 (蓝色经济区工程建设与安全协同创新中心,青岛理工大学,山东青岛266033) 摘要:利用废弃混凝土生产制备再生细骨料和再生粉体,并应用于干混砌筑砂浆中,通过调整用水量控制砂浆的 稠度在70mm~80mm 以此研究再生粉体掺量及胶砂比对干混砌筑砂浆基本性能、力学性能以及抗冻性能的影响.研究 结果表明,干混砌筑砂浆的基本性能与再生粉体掺量及胶砂比的变化均呈线性关系;当胶砂比为1:3,再生粉体掺量为 10%时,其28d抗压强度可达35.0MPa 比未掺加再生粉体时仅减小8.1%,且砂浆的抗冻性能符合规范要求. 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:TU578.1 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 recycled fine aggregate and recycled powder which is used in dry-mixed masonry mortar. Through adjusting water consumption to control the consistency in the range of 70-80mm the effeet of basic properties mechanical properties and frost resistance of dry-mixed masonry mortar on the different content of recycled powder and binder to sand ratio is studied.The results show that the 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 pressive strength at 28d is 35.0MPa and decreases only by 8.1% without adding recycled powder and the frost resistance of morta...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2013N0.3 专题研究 干湿循环和粉煤灰掺量对混凝土氯离子结合能力的影响* Influence of Fly Ash Admixture and Wet-dry Times on Chloride Binding Capacity of Concrete 张立明12,余红发2,何忠茂3 (1.吉林交通职业技术学院,长春130012;2.南京航空航天大学,南京210016; 3.甘肃土木工程研究院,兰州730020) 摘要:用自然扩散法测定了混凝土中的总氯离子和自由氯离子浓度,计算了粉煤灰混凝土氯离子结合能力,研究 了粉煤灰掺量、干湿循环次数对混凝土氯离子结合能力的影响.结果表明:随粉煤灰掺量的增加,混凝土对氯离子的结 合能力趋势是先升后降;且随干湿循环次数的增加而增大;粉煤灰掺量与干湿循环次数对混凝土氯离子结合能力不存在 耦合作用.因此,在盐湖地区的混凝土结构,建议选用掺加30%的粉煤灰混凝土. 关键词:粉煤灰;氯离子结合能力;干湿循环;盐湖地区 中图分类号:TU528.0 文献标识码:A文章编号:1005-8249(201303-0007-04 Zhang Li-ming.2 Yu Hong-fa He Zhong-mao (1.JiLin Communications Poly technic .Changchun 130012 China; 2.Science Research Institute of Civil Engineering in Gansu .Lanzhou .730020 China) Ahstract:The free chloride and total chloride of coneretes are determined with natural diffusion method The chloride binding capaei- ty of fly ash concretes are puted The influence of fly ash admixture content wet-dry cycle times on the chloride binding capability of conereted diseussed in this paper The results show that with the inerease of fly ash admixture content the chloride binding capacity of con- crete increase at first and then deerease the chloride binding eapacity of conerete inerease with the increuse of wet -dry cyele times;the chloride binding capacity of concrete doesn't exist coupling between fly ash admixture content and wet-dry eyele times Therefore .fly ash conerete with 30%fly ash content is remended for conerete structure in salt lake area. Key words:f...
粉煤灰综合利用 2014 NO.2FLYASHCOMPREHENSIVEUTILIZATION 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,李长成,何忠茂” (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。
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文文献标识码:A文章编号:1005-8249(2014)02-0008-04 Zhang Liming² , Li Changcheng', HeZhongmao^ ( 1. JilinCommunicationsPolytechnic,Changchun 130012;2.Engineeringtechnicof Gansu , Lan zhou,730020) p sds o pan and p pe o pn s oa chloride n concentrtion were measured at diffrent epth under diffrent nvirment.With use of regresson method , the relationship beween dif- fusion depths or cocrete cmressive strengths and chlride bind capacity correlation undemmersionand exposreThe reult showsthat: Chride bind capacity corelation dereased at a exponential function type with the increase of difusion depthsanconrete pressve strength.Proca tion of field structure bind capacity at diferent depths utilze the result of lngtem mmesion chloride bind capacity through the researh resut Key words;wet-dry cycles ; exposurereinforced concrete; chlonide bind ;corelation
发钢筋锈蚀,钢筋体积膨胀引发混凝土表面剥落、截面合料的掺量对混凝土的氯离子结合规律。
粉煤灰综合利用 2018 NO.4FLYASHCOMPREHENSIVEUTILIZATION 应用技术
干法脱硫灰用作路基材料的应用研究 Application Research on Dry FGD by-product used as Subgrade Materials
陈永瑞1,赖毅强1,范卫东2,姬胜2,邱振中1,苏清发1
(1.福建龙净脱硫脱硝工程有限公司,龙岩364000;2.新疆天富集团有限责任公司,石河子832000) 摘要:为了评估干法脱硫灰用作路基材料的可行性,本研究通过室内击实、无侧限抗压强度试验,检测干法脱 硫灰的最佳含水率、最大干密度及无侧限抗压强度,并建设脱硫灰示范工程道路。
关键词:脱硫灰;路基材料;压实度;弯沉值 中图分类号:X773;U416.1.文献标识码:A文章编号:1005-8249(2018)04-0078-04 Chen Yongrui’, Lai Yiqiang,Fan Weidong,Ji Sheng,Qiu Zhenzhong,,Su Qingfa 1.LonjinEvirmntloyCo,Lnyn340,Ch 2. Xinjiang Tianfu Group Co, Ltd, Shihezi 832000, China.) Abstract: To evaluate the feasibility of dry FGD by-produet used as subgrade material, the optimum moisture content, maximum dry density and unconfidpresve srenthof dryGDbyprodut were testethrough laboratorycmpactionandunonfinedcmpressivestrength ts in this studndtheemnstrati prjt fdryFDbprdutrodwasbuilteultsshwthat thencofindcmressive stengthf ry FGDbyprdu for28days and 180days is4.3Mpa and 11.3Mparesetively.The deletion value of road suface is59mmwhic canmee thepavemnt deinrequirements of gradefourhigay Keywords:FGD by-product; subgrade materials; pactness; deflection value 干法脱硫作为烟气脱硫的主流工艺之一,具有养生后形成的具有一定抗压强度的筑路材料,被广 投资低、占地少、节水、节能、没有废水排放等优点。
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 College fMchaic andMateras,Hhai Uiversity,Nanjing00) Abstract: This paper summarizes the stahus of industral residue used in asphalt concrele at home and abmad,and focuses on the perfomance change of asphalt concrete when admixing the steel slag, slag and ly ash. Asphalt concrete prepared from industrial residue has good environment and economic benefit, which has broad prospects and developmet. 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。
粉煤灰综合利用 2010 NO.5 FLY ASH COMPREHENSIVE UTILIZATION 专题研 宝钢Corex渣和常用矿渣性能的比较 Comparison of Properties between BAO-steel Corex Slag and Blast Furnace Granulated Slag 王振兴,张树青,吴是2,翟伟2 (1.同济大学材料科学与工程学院,上海200092;2.上海宝田新型建材有限公司,上海200942) 摘要:研究了宝钢Corex矿渣和常用矿渣的物理性能、易磨性、活性和自身水硬性.结果表明,宝钢Corex渣和常 用矿渣的化学成分比较接近.两种矿渣碱度均大于1,说明两者有较高的潜在水化活性.由于Corex渣具有较高的致密 性、含铁率和容重,使得Corex渣的易磨性较常用矿渣差.此外,在细度接近时,宝钢Corex渣的自身水硬强度略高于常 用矿渣,但Corex渣的早期活性指数明显高于常用矿渣,在比表面积为400~450m2/kg时,Corex渣的早期(3d、7d)活性 指数分别高于常用矿渣15%和20%以上,两者后期(28d)活性相差不大. 关键词:Corex渣;易磨性;活性;自身水硬性 中图分类号:TF534.1文献标识码:A 文章编号:1005-8249(2010)05-0006-04 WANG Zhen-xing' ZHANG Shu-qing' WU Min? ZHAI Wei? (1.School of Material Science Engineering Tongji University Shanghai 200092; 2.Shanghai Baotian Co.Ltd.of Building Materials Shanghai 200942) Abstract:The physical properties grindability activity and self-hydration activity of the blast furmace granulated slag and Corex slag in Bao- eel were studied in the paper.The result shows that the chemical position of Corex slag and blast fumace granulated slag is cloer.The alkaliaity of both of the slag is grenter than 1 so they have the potential hydration activity.Comparing with the blsst fumace granulated slag Corex slag has higher pactness iron content and bulk density so the grindability of Corex alag is lower than the former.In additicn in the same fineness the self hydrstion activity of Corex slag is a little higher than blast fumace granulated slag and the early activity index (3d 7d)of Corex is much hig...