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.

摘 要：通过正交试验分析了胶砂比、胶材组成、速凝剂掺量、聚合物掺量对某种古建筑修复用的聚合物砂浆的抗压强度、压折强度比、收缩率和拉伸黏结强度等宏观性能的影响，并通过扫描电镜观察和压汞试验分析了该种聚合物砂浆的微观形貌和孔隙特征，得出了修复砂浆的优化配合比，验证了其总体性能的优越性。Abstract:Theeffectsofbinder-sandratio,thecompositionofthecementitiousbinder,thecontentofacceleratorandpolymerpowderonthecompressivestrength,theratioofcompressionstrengthandflexurestrength,shrinkageandtensilebondstrengthofthepolymermortarforancientbuildingmaintenancewerestudiedthroughorthogonalexperiment.Themorphologyandtheporosityofthehardenedmortarwereinvestigatedbyscanningelectronmicroscope(SEM)andmercuryintrusionporosimetry(MIP).Theoptimizedmixproportionofthepolymermortarwasobtainedanditssatisfactoryperformancewasproved.

杨剑,温晓凯,张增起,等.古建筑修复用聚合物砂浆的配合比优化及微结构表征[J].混凝土与水泥制品,2019(12):1-6. YANG J,WEN X K,ZHANG Z Q,et al.The Optimization of Mix Proportion and Microstructural Characteristics of Polymer Mortar Used for Ancient Building Maintenance[J].China Concrete and Cement Products,2019(12):1-6.

摘 要: 研究了经过化学螯合稳定化处理后的城市生活垃圾焚烧飞灰（CFA）对水泥浆体凝结时间、抗压强度、电阻率和水化产物的影响规律。结果表明，掺入CFA后，水泥浆体的凝结时间缩短，在3 d和28 d龄期时生成了水化产物Friedel盐，且水泥浆体的液相离子浓度增大，电阻率减小；当CFA掺量为5%时，硬化水泥浆体7 d龄期内的抗压强度提高，但28 d抗压强度降低；当CFA掺量从10%增大到60%时，硬化水泥浆体的抗压强度均小于空白组，并逐渐降低。 Abstract: The effects of municipal solid waste incineration fly ash after chemical chelating agent stabilization treatment（CFA) on the setting time, compressive strength, electrical resistivity and hydration products of cement pastes were studied. The results show that the setting time of cement paste is shortened after CFA is mixed, and Friedel’s salt is formed at the age of 3 days and 28 days. In addition, the electrical resistivity of the cement paste is decreased due to the increase of ion concentration of the liquid phase. When the amount of CFA is 5%, it helps to improve the compressive strength of the hardened cement paste during the 7 days, but the compressive strength at 28 days decreases. When the amount of CFA is increased from 10% to 60%, the compressive strength of the hardened cement paste is smaller than that of the control group and decreases gradually.

邓芳,桂雨,廖宜顺,等.城市生活垃圾焚烧飞灰对水泥水化过程的影响研究[J].混凝土与水泥制品,2019(12):94-97. DENG F,GUI Y,LIAO Y S,et al.Study on the Influence of Municipal Solid Waste Incineration Fly Ash on Cement Hydration Process[J].China Concrete and Cement Products,2019(12):94-97.

摘 要：测试了不同龄期石灰石粉混凝土的干燥收缩和失水量，研究了玻璃粉掺量对其干燥收缩性能的影响。结果表明，掺加10%和20%玻璃粉可有效降低石灰石粉混凝土的干燥收缩，以10%掺量最佳，继续增加玻璃粉掺量反而增加了干燥收缩。扫描电镜（SEM）结果表明，良好的保水性和致密的内部结构，能够增强混凝土抵抗干燥收缩的能力，阻碍其内部水分迁移渗出，从而降低干燥收缩。 Abstract: The drying shrinkage and water loss of concrete with limestone powder at different ages were tested to study the effect of glass powder with different contents on its drying shrinkage performance. The results show that the utilization of 10% and 20% glass powder reduces drying shrinkage of concrete with limestone powder, and the best content is 10%, however, with the further increase of glass powder content, the drying shrinkage of concrete is increased. Scanning electron microscopy(SEM) results show that the good water retention and dense internal structure of concrete can enhance the ability of concrete to resist drying shrinkage and hinder the migration and exudation of internal moisture, thus reducing drying shrinkage.

何智海,常静宇.玻璃粉掺量对石灰石粉混凝土干燥收缩的影响[J].混凝土与水泥制品,2019(12):91-93. HE Z H,CHANG J Y.Effect of Glass Powder Content on Drying Shrinkage of Concrete with Limestone Powder[J].China Concrete and Cement Products,2019(12):91-93.

摘 要：在NaOH及水玻璃（WG）两种碱激发剂下，研究了粉煤灰及炉渣对碱激发镍渣-粉煤灰-炉渣胶凝材料（ANC-FI）流动度及强度的影响，并通过XRD和IR揭示其机理。结果表明，当粉煤灰及炉渣总掺量为30%（等质量取代镍渣）时，随着炉渣掺量的增加（即粉煤灰掺量降低），ANC-FI的标准稠度用水量增加，凝结时间延长，砂浆流动度降低；ANC-FI抗折强度和抗压强度均随着炉渣掺量的增加呈先增大后减小的趋势，最佳掺量为粉煤灰和炉渣各取代15%的镍渣。 Abstract: The effects of fly ash and incineration slag on the fluidity and strength of alkali-activated nickel slag-fly ash-incineration slag cementitious material ( ANC-FI) with NaOH or water glass (WG) as activators were studied, and the mechanism was revealed by XRD and IR. The results show that when the nickel slag is replaced by 30% of fly ash and incineration slag, with the increase of the incineration slag content (i.e., the amount of fly ash is reduced), the standard consistency water consumption of ANC-FI is increased, the setting time is prolonged and the fluidity of ANC-FI is reduced. The flexural strength and compressive strength of ANC-FI increase first and then decrease with the increase of incineration slag content, and when the nickel slag is replaced by 15% fly ash and 15% incineration slag respectively, the optimum ANC-FI can be obtained.

季韬,张检梅,王灿强.粉煤灰和炉渣对碱激发镍渣胶凝材料流动度和强度的影响[J].混凝土与水泥制品,2019(12):87-90+97. JI T,ZHANG J M,WANG C Q.Effect of Fly Ash and Incineration Slag on the Fluidity and Strength of Alkali-activated Nickel Slag Cementitious Material[J].China Concrete and Cement Products,2019(12):87-90+97.

摘 要：研制了一种新型仿花岗岩混凝土路缘石成型装置，重点解决了原成型生产工艺中存在的成型时间长、生产效率低、外观质量差等问题。经生产验证得出：新装置产品2 min内可形成一定初始结构强度，养护7 d抗压强度可达到设计强度的90%以上，生产效率与原干法生产工艺相当，较原湿法生产工艺，生产效率有一定提高，生产周期缩短，占用场地减少，生产成本降低；新装置产品抗压强度可达55 MPa，表观密度可达2 400 kg/m3，较原工艺产品，物理力学性能有较大提高；新装置产品外观平整光滑。 Abstract： A new forming device for imitating granite concrete curb was developed, which focused on solving the problems of long forming time, production efficiency and poor appearance quality in the original forming process. The production verification shows that the initial structural strength of the new device product is 2 min, the compressive strength of the product can reach more than 90% of the design strength in 7d curing period, and the production efficiency is similar to that of the original dry process. Compared with the original wet process, the production efficiency is greatly improved, the production cycle is shortened, the occupied site is reduced, and the production cost is reduced. The compressive strength of the new device product reaches 55 MPa, the compactness reaches 2 300 kg/m3, which is better than the original process. The physical properties of the process products have been greatly improved, and the appearance quality of the new device products is smooth, which avoids the shortcomings of rough and hollow appearance of the original dry forming process products.

徐自明,王乾.新型仿花岗岩混凝土路缘石成型装置设计与试验研究[J].混凝土与水泥制品,2019(12):83-86. XU Z M,WANG Q.Design and Experimental Study of New Imitation Granite Concrete Curb Stone Forming Device[J].China Concrete and Cement Products,2019(12):83-86.