苏州混凝土水泥制品研究院有限公司

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发布时间:2020-01-06 00:00:00
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第六期

混掺纤维混凝土桥面铺装材料性能试验研究
混掺纤维混凝土桥面铺装材料性能试验研究
  • 顾 万1,肖 鹏1,康爱红1,茅 荃2,张兴明3,钱立峰4
2019年第6期 NO.278 P53-58
摘要
引用本文
摘 要:将玄武岩纤维和聚丙烯纤维以不同体积掺量分别进行单掺和混掺制备C60纤维混凝土,对纤维混凝土进行抗压强度、劈裂抗拉强度、抗折强度、冻融损伤、干燥收缩性能试验,记录不同龄期下相关性能指标的变化差异并与普通混凝土进行对比分析。结果表明,将玄武岩纤维和聚丙烯纤维混掺可以弥补单一纤维的不足,充分发挥两种纤维的不同优势,混掺纤维对混凝土劈裂抗拉强度和抗折强度的提升具有显著效果,纤维混掺可以削弱冻融损伤对混凝土抗压、抗折强度的不利影响,降低混凝土的干燥收缩变形。Abstract:C60fiberconcretewaspreparedbymixingbasaltfiberandpolypropylenefiberwithdifferentvolumesinglemixingandmixing,andthecompressivestrength,splittingtensilestrength,flexuralstrength,freeze-thawdamageanddryingshrinkageperformanceoffiberconcreteweretested.Thedifferencesintheperformanceindicatorsofdifferentageswererecordedandcomparedwiththoseofordinaryconcrete.Theresultshowsthattheblendingofbasaltfiberandpolypropylenefibercanmakeupforthedeficiencyofsinglefiber,andgivefullplaytothedifferentadvantagesofthetwofibers.Themixedfiberhasasignificanteffectonthesplittingtensilestrengthandflexuralstrengthofconcrete.Theblendingcanweakentheadverseeffectsoffreeze-thawdamageonconcretecompressivestrengthandflexuralstrength,andreducethedryingshrinkagedeformationofconcrete.
顾万,肖鹏,康爱红,等.混掺纤维混凝土桥面铺装材料性能试验研究[J].混凝土与水泥制品,2019(6):53-58. GU W,XIAO P,KANG A H,et al.Experimental Study on Properties of Mixed Fiber Concrete Bridge Deck Pavement Materials[J].China Concrete and Cement Products,2019(6):53-58.
铜矿尾砂再生骨料混凝土性能试验研究
铜矿尾砂再生骨料混凝土性能试验研究
  • 林祖宏,毛富胜,谢海波
2019年第6期
摘要
引用本文
摘 要:根据地方废弃物的特点,把铜矿尾砂和再生骨料结合起来,代替砂石应用到普通混凝土中,通过调整外加剂掺量,保持水胶比不变,制作相应试件,测定其抗压强度、抗折强度及耐久性。结果表明,掺铜矿尾砂及再生骨料并未导致混凝土抗压强度及抗折强度明显降低,甚至有所提高。保持水胶比不变,调整铜矿尾砂和再生骨料用量,对混凝土耐久性影响不明显。 Abstract: According to the quantity characteristics of local waste, copper tailings and recycled aggregates are combined to replace sand and gravel in ordinary concrete. By adjusting the dosage of admixtures and keeping the water-binder ratio unchanged, the specimens are made to determine their compressive strength, flexural strength and durability. The results show that in terms of strength, the compressive strength and flexural strength of concrete are not significantly reduced or even improved by adding tailings and recycled aggregates. To keep the water-binder ratio unchanged and to adjust the amount of tailings and recycled aggregates, the durability of concrete is not significantly affected.
林祖宏,毛富胜,谢海波.铜矿尾砂再生骨料混凝土性能试验研究[J].混凝土与水泥制品,2019(6):98-100. LIN Z H,MAO F S,XIE H B.Experimental Study on Performance of Concrete with Copper Tailings and Recycled Aggregate[J].China Concrete and Cement Products,2019(6):98-100.
废玻璃掺合料对混凝土力学性能的影响
废玻璃掺合料对混凝土力学性能的影响
  • 静 行,刘雷鸣,赵 毅,王爱勤
2019年第6期
摘要
引用本文
摘 要:为了研究废玻璃掺合料对混凝土各项力学性能的影响,对不同玻璃粉粒径(150~830 μm、75~150 μm、25~75 μm)和不同体积掺量(5%、10%、15%、20%)的废玻璃掺合料混凝土进行了抗压强度、劈裂抗拉强度和静弹性模量性能测试,分析了废玻璃粉粒径和体积掺量对混凝土力学性能的影响,同时研究了废玻璃粉掺合料混凝土的拉压比和弹强比。结果表明:废玻璃粉掺合料对混凝土力学性能影响较大,当玻璃粉掺量≥10%时,混凝土的抗压强度均有不同程度的提高,玻璃粉粒径越细,混凝土的抗压强度越高。随着废玻璃粉掺量增加,混凝土劈裂抗拉强度持续降低,拉压比减小。混凝土弹性模量随着玻璃粉的掺入均出现不同程度的增大,且玻璃粉粒径越小,弹性模量越大,弹强比随玻璃粉掺量先增大后减小。 Abstract: In order to study the influence of waste glass admixture on the mechanical properties of concrete, the compressive strength, splitting tensile strength and static elastic modulus of waste glass admixture concrete with different glass powder size (150~830 μm、75~150 μm、150~830 μm) and different volume content (5%, 10%, 15%, 20%) were tested. The influence of particle size and volume content of waste glass powder on the mechanical properties of concrete was analyzed, and the tension-compression ratio and elastic strength ratio of concrete were also studied. The results show that the waste glass admixture has great influence on the mechanical properties of concrete, when the content of glass powder is more than 10%, the compressive strength of concrete increases. And the finer the size of glass powder, the higher the compressive strength of concrete. With the increase of waste glass powder content, the splitting tensile strength and the tension-compression ratio of concrete decrease continuously. The elastic modulus of concrete increases in varying degrees with the addition of glass powder, and the smaller the particle size of glass powder, the larger the elastic modulus of the concrete. The elastic strength ratio first increases and then decreases with the addition of glass powder.
静行,刘雷鸣,赵毅,等.废玻璃掺合料对混凝土力学性能的影响[J].混凝土与水泥制品,2019(6):94-97. JING X,LIU L M,ZHAO Y,et al.Effects of Waste Glass Powder Admixture on Mechanical Properties of Concrete[J].China Concrete and Cement Products,2019(6):94-97.
钢渣微粉及复合掺合料对水泥和自密实混凝土性能的影响
钢渣微粉及复合掺合料对水泥和自密实混凝土性能的影响
  • 何若楠,王元纲,黄凯健,陶有华,黄 权,张高勤
2019年第6期
摘要
引用本文
摘 要:为扩大钢渣微粉在自密实混凝土(SCC)中的应用,采用标准试验方法研究了钢渣微粉及复合掺合料对硅酸盐水泥凝结时间、SCC拌和物填充性及凝结时间的影响。结果表明,钢渣微粉对水泥净浆的凝结具有明显的延缓作用,钢渣微粉掺量越大,水泥的凝结时间就越长;与钢渣微粉相比,复合掺合料的缓凝作用明显减小。采用钢渣微粉掺量为10%~50%,并按SF1级坍落扩展度要求配制的SCC拌和物具有良好的填充性;掺比例为1∶1的钢渣微粉-粉煤灰复合掺合料时,SCC拌和物的填充性明显提高。掺加钢渣微粉使SCC拌和物的凝结时间明显延长;与单掺钢渣微粉相比,掺比例为1∶1的钢渣微粉-矿渣微粉复合掺合料对SCC拌和物凝结时间的影响显著减小。 Abstract: In order to expand the application of steel slag powder in self-compacting concrete(SCC), the effects of steel slag powder and compound admixtures on setting time of portland cement paste, filling ability and setting time of SCC mixture were studied by standard test methods. The results show that steel slag powder has obvious retarding effect on the setting of cement paste. The larger the content of steel slag powder mixing in cement, the longer the setting time of cement paste. Compared with the steel slag powder, the retarding effect of compound admixtures is obviously reduced. The SCC mixtures with 10%~50% steel slag powder according to slump-flow requirements of SF1 grade have good filling ability. When the steel slag powder-fly ash compound admixture is mixed with a ratio of 1∶1, the filling ability of SCC mixture can be obviously improved. The setting time of SCC mixture is obviously prolonged by mixing with steel slag powder. Compared with the single steel slag powder, the effect of the steel slag powder-slag powder compound admixture with a ratio of 1∶1 on the setting time of SCC mixture is significantly reduced.
何若楠,王元纲,黄凯健,等.钢渣微粉及复合掺合料对水泥和自密实混凝土性能的影响[J].混凝土与水泥制品,2019(6):88-93. HE R N,WANG Y G,HUANG K J,et al.The Influence of Steel Slag Powder and Compound Admixture on Performance of Cement and Self-compacting Concrete (SCC)[J].China Concrete and Cement Products,2019(6):88-93.
水泥混凝土路面裂缝成因与防控
水泥混凝土路面裂缝成因与防控
  • 王文彬
2019年第6期
摘要
引用本文
摘 要:水泥混凝土道路由于其施工操作的便利和良好的性价比,目前在城市小区、乡村应用仍较为普及,但施工操作稍有不当水泥混凝土道路路面极易产生裂缝。基于对水泥混凝土道路建设施工经验总结及观察,分析论证了水泥混凝土路面产生各种裂缝的原因,并在此基础上提出了针对水泥混凝土路面各种裂缝的防控措施。 Abstract: Due to the convenience of construction operation and good cost performance ratio, cement concrete pavement is still widely used in rural areas currently, but the defect of cement concrete pavement is that it is very easy to produce cracks on the pavement with slight improper construction operation. Based on the summary and observation of the construction experience of cement concrete pavement, the causes of various cracks in cement concrete pavement are analyzed and demonstrated. On this basis, the prevention and control measures for various cracks in cement concrete pavement are put forward.
王文彬.水泥混凝土路面裂缝成因与防控[J].混凝土与水泥制品,2019(6):84-87. WANG W B.Case Prevention and Control of Cement Concrete Pavement Cracks[J].China Concrete and Cement Products,2019(6):84-87.
聚合物混凝土在CRTSⅡ型板式无砟轨道宽窄接缝混凝土     修复施工中的应用
聚合物混凝土在CRTSⅡ型板式无砟轨道宽窄接缝混凝土 修复施工中的应用
  • 赵世煜,陈 占,崔国庆,何新辉
2019年第6期
摘要
引用本文
摘 要:由于受高温天气的影响,高速铁路CRTSⅡ型板式无砟轨道宽窄接缝混凝土的裂缝、破损病害发生频率较高,为此研制了满足运营高速铁路宽窄接缝修复施工要求的聚合物混凝土材料,成功应用于京沪高铁德禹特大桥宽窄接缝病害整治工程,并从工程概况、施工工艺、修复材料、施工方法及施工质量控制等方面对宽窄接缝混凝土伤损修复施工进行了归纳和总结。 Abstract: Because of the influence of high temperature, the concrete crack and damage which are found in the wide and narrow construction joint of the high-speed railway CRTS Ⅱ slab type ballastless track hare a high frequency of occurrence. The polymer modified concrete which met the requirements of the wide and narrow construction joint concrete repair project on the operating high-speed railway line are designed and prepared. And the polymer modified concrete was successfully applied in the wide and narrow construction joint of concrete repair project which located in the Deyu super bridge of the Beijing-Shanghai high-speed railway. That repair project was induced and summarized from the project overview, construction technology, repair materials, construction methods and construction quality and so on.
赵世煜,陈占,崔国庆,等.聚合物混凝土在CRTSⅡ型板式无砟轨道宽窄接缝混凝土修复施工中的应用[J].混凝土与水泥制品,2019(6):81-83. ZHAO S Y,CHEN Z,CUI G Q,et al.Application of Polymer Concrete in Wide and Narrow Construction Joint Concrete Repair Project of the CRTS Ⅱ Slab Type Ballastless Track[J].China Concrete and Cement Products,2019(6):81-83.
混凝土内钢筋腐蚀状态电化学检测试验研究
混凝土内钢筋腐蚀状态电化学检测试验研究
  • 李晟文,李 果
2019年第6期
摘要
引用本文
摘 要:分别用银/氯化银、钛铱合金、石墨做固体参比电极,用光圆钢筋、螺纹钢筋做工作电极,用不锈钢做辅助电极,设计制作了两种形式的埋置式钢筋腐蚀状态检测探头A和B,在掺盐和未掺盐试件中进行了试验检测。结果表明,以钛铱和石墨为参比电极、以螺纹钢筋为工作电极的检测探头B对活化状态(掺盐)的钢筋具有较好的检测效果。 Abstract: Silver/silver chloride, titanium-niobium alloy and graphite were used as solid reference electrodes respectively. Light-reinforcing steel bars and threaded steel bars were used as working electrodes, and stainless steel was used as auxiliary electrode. Two types of embedded steel bars were detected and corroded. Sensors A and B were tested in salt-doped and unsalted test pieces. The results show that the detection sensor B with titanium ruthenium and graphite as the reference electrode and the rebar as the working electrode has a good detection effect on the steel bar in the activated state (salted).
李晟文,李果.混凝土内钢筋腐蚀状态电化学检测试验研究[J].混凝土与水泥制品,2019(6):77-80. LI S W,LI G.Experimental Research on Electrochemical Detection of Corrosion State of Steel Bars in Concrete[J].China Concrete and Cement Products,2019(6):77-80.
膨胀玻化微珠无机保温砂浆性能分析研究
膨胀玻化微珠无机保温砂浆性能分析研究
  • 陈若山,梁剑麟
2019年第6期
摘要
引用本文
摘 要:以膨胀珍珠岩和微珠保温砂岩为对象,通过实验法获得了不同骨料级配下膨胀玻化微珠无机保温砂浆,并分析研究了材料的吸水特性、保温骨料、纤维用量等变量对无机保温砂浆的使用性能的影响。结果表明,随玻化微珠掺量的增加,无机保温砂浆干密度不断增加,孔隙率表现出先下降后上升的变化趋势,当m(膨胀珍珠岩)∶m(玻化微珠)为1∶1.5时,孔隙率最小,最小值为0.236。当保温骨料为60%,可分散乳胶粉为3.8%,纤维素醚掺量为0.25%,引气剂用量为0.028%时,无机保温砂浆的导热系数、强度和干密度值满足标准要求。 Abstract: Taking expanded perlite and microbeads as the objects, the inorganic thermal insulation mortar with expanded glass bubbles under different aggregate grades was obtained by experimental method, and the application performance of inorganic thermal insulation mortar was analyzed and studied according to the water absorption characteristics of materials, the amount of thermal insulation aggregate and the amount of fiber. The results show that, with the increase of glass bubbles, the dry density of inorganic thermal insulation mortar increases continuously, and the porosity shows a change process of decreasing first and then rising. When the mass ratio of expanded perlite to glass bubbles is 1∶1.5, the porosity is the smallest and the minimum is 0.236. When the thermal insulation aggregate is 60%, dispersible latex powder is 3.8%, cellulose ether is 0.25%, and the amount of air attractant is 0.028%, the thermal conductivity, strength and dry density of the inorganic thermal insulation mortar meet standard requirement.
陈若山,梁剑麟.膨胀玻化微珠无机保温砂浆性能分析研究[J].混凝土与水泥制品,2019(6):73-76. CHEN R S,LIANG J L.Analysis Study on Properties of Inorganic Thermal Insulation Mortar with Expanded Glass Bubbles[J].China Concrete and Cement Products,2019(6):73-76.
轻质多孔型陶粒混凝土制备及性能研究
轻质多孔型陶粒混凝土制备及性能研究
  • 谭春雷,邓 宇,任 吉,秦文英,蒋伟昌,黄凡荣,曾 鑫
2019年第6期
摘要
引用本文
摘 要:以双氧水为化学发泡剂,陶粒、水泥、粉煤灰为主要原料制备了轻质多孔型陶粒混凝土,研究了双氧水、粉煤灰掺量变化对陶粒混凝土性能的影响。结果表明,双氧水、粉煤灰掺量可有效改善陶粒混凝土内部孔结构分布,从而提高其力学性能、导热系数、抗冻融能力。在水胶比0.35,陶粒、水泥、纳米CaCO3、减水剂、稳泡剂、粉煤灰、双氧水用量分别为15%、40%、1%、0.04%、1.2%、28%~32%、6%~8%时,制备的陶粒混凝土表观密度低于1 100 kg/m3,抗压强度高于7 MPa,抗折强度高于3MPa,导热系数低于0.26 W/(m·K),冻融循环50次后,抗压强度损失低于20%,抗压强度大于6 MPa。 Abstract: The lightweight and multihole ceramsite concrete was prepared by using hydrogen peroxide as chemical foaming agent and ceramsite, cement and fly ash as main raw materials. The effects of the change of hydrogen peroxide and fly ash on properties of ceramsite concrete were researched. The results show that the mixing amount of flyash and hydrogen peroxide significantly improve the distribution of ceramsite concrete internal pore structure, so as to impact on the mechanical properties, thermal conductivity and freeze-melt resistance. When the water-binder ratio is 0.35, the dosage of ceramsite, cement, nano-CaCO3, water reducing agent, foam stabilizing agent, fly ash and hydrogen peroxide respectively is 15%, 40%, 1%, 0.04%, 1.2%, 28%~32% and 6%~8%,the apparent density of the prepared ceramic concrete is lower than 1 100 kg/m3, the compressive strength is higher than 7 MPa, the flexural strength is higher than 3 MPa, the thermal conductivity is lower than 0.26 W/(m·K) and the compressive strength loss is less than 20%, the compressive strength is greater than 6 MPa after 50 times freeze-thraw cycle.
谭春雷,邓宇,任吉,等.轻质多孔型陶粒混凝土制备及性能研究[J].混凝土与水泥制品,2019(6):69-72. TAN C L,DENG Y,REN J,et al.Research on Preparation and Performance of Lightweight and Multihole Ceramsite Concrete[J].China Concrete and Cement Products,2019(6):69-72.
地铁车站结构抗震分析
地铁车站结构抗震分析
  • 郭佳奇,陈瑞敏,周绍宾
2019年第6期
摘要
引用本文
摘 要:针对北京某地铁车站,根据反应位移法的计算原理,首先求出由土层位移引起作用于地铁车站结构的侧向力、作用于结构周围的剪力及结构惯性力;然后采用Midas GTS有限元软件进行地铁车站的抗震性能分析。由分析结果知,地铁车站层间位移满足规范限值要求,静力工况下的配筋能满足地震工况下的配筋需求,地铁车站结构的配筋控制工况为非地震工况。 Abstract: According to the calculation principle of the response displacement method, the lateral force acting on the metro station structure, the shear force acting on the surrounding structure and the structural inertia force caused by the soil displacement are calculated. The Midas GTS finite element software was used to analyze the seismic performance of the metro station. According to the analysis results, the inter-layer displacement of the metro station can meet the requirements of the standard limit, and the reinforcement under static conditions can meet the reinforcement requirements under seismic conditions. The reinforcement control condition of the metro station structure is non-seismic. Key words: Metro station; Seismic analysis; Response displacement method; Inter-layer displacement
郭佳奇,陈瑞敏,周绍宾.地铁车站结构抗震分析[J].混凝土与水泥制品,2019(6):64-68. GUO J Q,CHEN R M,ZHOU S B.Analysis on Seismic Properties of Metro Station Structure[J].China Concrete and Cement Products,2019(6):64-68.
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