摘 要：以粒化高炉高钛矿渣粉为主要原料，水玻璃为激发剂，铝粉为引气剂，制备了碱激发高钛矿渣免烧陶粒。试验发现单一使用高钛矿渣粉制备的陶粒保气量不足、堆积密度较大，提出添加少量粉煤灰或固硫灰对其进行了改性，研究改性前后陶粒性能，利用XRD、SEM等手段探讨了陶粒矿物组成和微观结构。试验结果表明，掺入适量的粉煤灰或固硫灰，体系浆体黏度提高，保气量改善，能制备出容重更小的免烧陶粒。 Abstract: Sinter-free lightweight aggregates（SLWA） have been prepared by using titanium slag as raw material, sodium silicate water glass as alkaline activator and aluminite powder (AP) as air-entraining agent. And the relatively high bulk density of SLWA was observed, due to the low viscosity and gas preservation of pastes when titanium slag was used alone. Therefore, fly ash and circulating fluidized bed combustion fly ash (CFBC) were used to improve properties of SLWA.And the XRD and SEM tests were used to study the mineral composition and microstructures of prepared SLWA. The results showed that the viscosity and gas preservation could be improved. And the SLWA with lower bulk density has been obtained.

罗健,李军,卢忠远.粉煤灰和固硫灰对碱激发高钛矿渣免烧陶粒性能的影响[J].混凝土与水泥制品,2017(2):88-94. LUO J, LI J, LU Z Y.Effects of Fly Ash and Circulating Fluidized Bed Combustion on Alkaline Activator Sinter-free Lightweight Aggregates (SLWA)[J].China Concrete and Cement Products,2017(2):88-94.

摘 要：针对目前隧道渗漏水的现状和原因，摈弃以室内试件抗渗等级评价衬砌混凝土防渗性能的传统思路，以改善混凝土流动性及抗裂性进而提升实体结构防渗性能的新思路来进行衬砌混凝土的配制。在此基础上，通过流动性控制、外加剂改性、内养护减缩等途径开展了衬砌混凝土性能优化研究，制备出了不依赖于现场施工水平的大流动性内养护抗裂衬砌混凝土，并结合施工缝及变形缝等细部防水措施，在某富水区地铁隧道进行了工程应用，取得了较好的防渗漏效果。 Abstract: According to the current status and cause analysis of tunnel seepage, a new idea to improve the fluidity and crack resistance of concrete and thus enhance impervious performance of concrete structure was proposed, replacing the traditional idea of using laboratory permeability grade of the specimens to evaluate impervious performance of lining concrete. On this basis, with the technologies of fluidity control, admixtures modification and shrinkage reducing by internal curing, study on performance optimization of lining concrete was carried out, and lining concrete with performance of high-fluidity, internal curing and high anti-cracking was prepared, which was independent of construction level in-site. Combined with the detail waterproof measures of construction joint and deformation joint, above measures were applied in a metro tunnel served in rich water zone, and desirable effect of seepage prevention was obtained in this project.

李享涛,张国华,仲新华,等.富水区地铁隧道衬砌混凝土防渗技术及应用[J].混凝土与水泥制品,2017(2):83-87. LI X T, ZHANG G H, ZHONG X H,et al.Anti-seepage Technology and Application of Tunnel Lining Concrete in Rich Water Zone[J].China Concrete and Cement Products,2017(2):83-87.

摘 要：水泥混凝土路面加铺沥青混合料形成复合式路面，其层间的界面特性是复合式路面耐久性的重要影响因素，而水泥混凝土路面表面的细观粗糙度和宏观纹理是影响复合式路面界面黏结性能的重要因素。本文针对不同尺度下水泥混凝土路面构造特性进行了研究，结果表明，机制砂混凝土路面表面粗糙度及抗滑性能指标普遍低于河砂混凝土；不同处理方式作用下，水泥混凝土路面表面细观粗糙度和宏观构造深度差别很大。 Abstract：The interfacial characteristics of the composite pavement is an important factor affecting the durability of composite pavement made of asphalt mixture on cement concrete pavement. And the microcosmic roughness and macroscopic tectonic depth of the cement concrete pavement surface are the important factors which affect the adhesive performance of the composite pavement interface. The structural characteristics of cement concrete pavement under different scales are studied. The results show that the surface roughness and anti-sliding performance of the machine-made sand concrete pavement are generally lower than those of the river sand concrete. Under the different treatment methods, the surface roughness and macroscopic structure depth of cement concrete pavement are very different.

王浩,任少博,黄江红,等.水泥混凝土路面表面多尺度构造特性研究[J].混凝土与水泥制品,2017(2):77-82. WANG H, REN S B, HUANG J H,et al.Characteristic Research on Multi-scale Structure of Cement Concrete Pavement Surface[J].China Concrete and Cement Products,2017(2):77-82.

摘 要：为了提高张拉精度和自动化水平，设计了一种预应力水泥电杆用智能预应力张拉机。该张拉机由触摸屏、PLC、传感器和液压驱动部分组成，工作时选择预先输入的张拉参数，自动张拉并打印张拉结果，并可插入“U”盘将张拉结果拷贝到电脑中转换成Excel格式文件保存。Abstract:Inordertoimprovetheprecisionandautomationleveloftension,akindofsmartprestressedtensioningmachineforprestressedcementpoleisdesigned.Thetensioningmachineconsistsofthetouchscreen,PLC,sensorandhydraulicparts.Whenworking,thetensionparametersistypedahead,thentheautomatictensioningisdoneandthetensionresultisprinted.Inaddition,thetensionresultcanbecopedintothe"U"diskandconvertedtoExcelformatfileinthecomputer.

刘瑞东.一种水泥电杆用预应力自动张拉机[J].混凝土与水泥制品,2017(2):75-76. LIU R D.A Kind of Prestressing Force Automatic Tensioning Machine Used for Cement Pole[J].China Concrete and Cement Products,2017(2):75-76.

摘 要：随着湿拌砂浆的应用与推广，对湿拌砂浆专用外加剂的研究越来越多。本文研究了砂浆外加剂KZJ-M100不同掺量对掺石粉湿拌砂浆的和易性、保水性、拉伸黏结强度、抗压强度和收缩率的影响，试验结果表明，当KZJ-M100的用量为胶凝材料质量的0.03%～0.04%时，掺石粉湿拌砂浆的综合性能可达到最佳的状态。同时分析了KZJ-M100对掺不同细度模数砂子的湿拌砂浆性能的影响，结果表明，使用细度模数为2.2～2.6的砂子的应用效果较好。Abstract：Withtheapplicationandpopularizationofwet-mixedmortar，moreandmoreresearchesarefocusingonbuildingmortaradmixture.TheinfluenceoftheamountofmortaradmixtureKZJ-M100onworkability,water-retainingproperty,tensileadhesivestrength,compressivestrengthandshrinkingpercentageofwet-mixedmortarcontaininggroundlimestonewerestudied.Theresultsshowedthat,whenthecontentofKZJ-M100weights0.03%~0.04%ofthecementitiousmaterial,thecomprehensiveperformanceofwet-mixedmortarreachestheoptimalstatus.Meanwhile,theeffectofsandfinenessmodulusonwet-mixedmortaradmixtureKZJ-M100werealsoanalyzed，theexperimentalresultindicatedthatthesandfinenessmodulusfrom 2.2～2.6hasthegoodapplicationvalue.

刘木林.砂浆外加剂对掺石粉湿拌砂浆性能影响的试验研究[J].混凝土与水泥制品,2017(2):71-74. LIU M L.Experimental Study of Mortar Admixture on Properties Effects of Wet-mixed Mortar with Ground Limestone[J].China Concrete and Cement Products,2017(2):71-74.

摘 要：研究了水灰比对磷渣粉煤灰泡沫混凝土流动性、干密度、强度、干缩性能和吸水率的影响。结果表明，磷渣粉煤灰泡沫混凝土随着水灰比从0.35增加到0.55，泡沫混凝土的流动度增大，干密度先减小再增大，7d和28d的抗折、抗压强度先升高后降低，吸水率先降低后增大，收缩值先减小后增加。当水灰比为0.40时，泡沫混凝土的流动度、干密度、7d和28d的抗压强度、抗折强度、吸水率和收缩值等性能均达到最佳值。Abstract：Theeffectofwatercementratioonthefluidity,drydensity,strength,dryshrinkageandwaterabsorptionoffoamconcretewasstudi.Theresultsshowedthatwithwatercementratioincreasingfrom0.35to0.55,thefluidityofthephosphorusslagandflyashfoamedconcreteincreases,thedrydensitydecreasesfirstandthenincreases,7dand28dflexuralandcompressivestrengthincreasesfirstandthendecreases,waterabsorptiondecreasesfirstandthenincreases,shrinkagevaluedecreasesfirstandthenincreases.Whenthewatercementratiois0.40,theflowrate,drydensity,7dand28dcompressivestrength,waterabsorptionandshrinkagevalueareallreachingthebestvalue.

刘秋美,李彩玉,杨江红,等.水灰比对磷渣粉煤灰泡沫混凝土性能影响的研究[J].混凝土与水泥制品,2017(2):68-70. LIU Q M, LI C Y, YANG J H,et al.Influence Research of Water Cement Ratio on Performance of Phosphorus Slag and Fly Ash Foam Concrete[J].China Concrete and Cement Products,2017(2):68-70.