摘 要：对不同煤矸石掺量下的煤矸石保温混凝土进行了抗压、抗拉及保温性能试验研究。结果表明，煤矸石的加入不利于混凝土的强度，且随着掺量的增加，强度逐渐下降；但随着龄期的增加，不同煤矸石掺量的煤矸石保温混凝土的立方体抗压强度呈现一定的上升趋势；随着煤矸石掺量的增加，煤矸石混凝土的导热系数呈下降趋势，保温性能逐渐增强。当煤矸石掺量为30%时，C30煤矸石保温混凝土的强度和保温性能均满足使用要求，即煤矸石替代部分粗骨料应用于保温混凝土是可行的。 Abstract: In different coal gangue, the gangue insulation concrete compressive and tensile test and thermal insulation properties were carried out, the results show that the compressive strength and splitting tensile strength gradually decreased when the coal gangue added to the concrete. With the increasing age, different coal gangue thermal insulation concrete cube compressive strength showed a rising trend. With the increase of the coal gangue content, the thermal conductivity of coal gangue concrete tends to decrease, and the thermal insulation performance is enhanced. The strength and thermal insulation performance of C30 concrete can meet the requirements at the same time, when the coal gangue content was 30%. It is proved that it is feasible to use coal gangue in the field of thermal insulation concrete, instead of coarse aggregate.

杨彬,刘斌,丁斌.煤矸石保温混凝土力学及保温性能试验研究[J].混凝土与水泥制品,2017(7):89-91. YANG B, LIU B, DING B.Experimental Research on Mechanical Properties and Thermal Insulation Performance of Coal Gangue Insulation Concrete[J].China Concrete and Cement Products,2017(7):89-91.

摘 要：对比研究了硅铬渣、水淬铬渣和高碳铬渣三种物质的物性和它们替代砂作为建筑材料的力学强度、收缩值和铬表面浸出等的差异。研究结果表明，高碳铬渣可经破碎后用于代替碎石，作为混凝土中的粗骨料使用，硅铬渣、水淬铬渣可作为混凝土中的细骨料使用。 Abstract: The silicon ferrochrome slag, water quenching ferrochrome slag and high carbon ferrochrome slag are studied. And the difference in mechanical strength, shrinkage and chromium surface leaching of the building materials as sand replaced by these three slag are studied. The results show that the high carbon ferrochrome slag can be used to replace the gravel after crushing rubble in the concrete, which used as a coarse aggregate. Silicon ferrochrome slag and water quenching ferrochrome slag can be used as a fine aggregate in concrete.

汪发红,水中和.铬铁渣替代建筑用砂的试验研究[J].混凝土与水泥制品,2017(7):86-88. WANG F H, SHUI Z H.Experimental Study on Silicon Ferrochrome Slag Instead of Construction Sand[J].China Concrete and Cement Products,2017(7):86-88.

摘  要：富硅镁冶金镍渣是一种具有潜在火山灰活性的固体废弃物，可通过超细硅灰改性激发潜在活性，使其在硅酸盐水泥中火山灰反应充分，形成致密的网络状C-S-H凝胶，针刺状AFt等水化产物。抗压强度、粒度分布、比表面积、水化热、孔径分布、TG-DSC、SEM等宏观及微观测试表明，熟料∶镍渣∶硅灰∶石膏=85%∶5%∶5%∶5%体系的28d抗压强度可达67.1MPa，较空白样高近7MPa；水化诱导前期放热量峰值为0.19379J/g，水化加速期放热量峰值为0.25262J/g；体系1的28d水化试样粉末2～50nm细孔所占比例为51%，可明显观察到C-S-H凝胶，AFt等水化产物。Abstract:Asthesolidwaste,thenickelslagmetallurgicallywithsiliconandmagnesiumelements(brieflycalled“nickelslag”)hasthepotentialpozzolanicactivity.Inordertogetpozzolanicactivityintheportlandcement,thepotentialactivityofslagisstimulatedbysuperfinesilicafume.Asaresult,manyhydrationProducts,suchascompactnetstructureofC-S-HgelandneedlelikeAFthasformed.Macroandmicrotestinghavebeencarriedout,suchascompressivestrengthtest,particlesizedistribution,specialsurfacearea,heatofhydration,poresizedistribution,TG-DSCandSEMtests.Theresultsshowthatthebestformulaofrawmaterialsisclinker:nickelslag:silicafume:gypsum=85%:5%:5%:5%.Its28dcompressivestrengthis67.1MPaand7MPalargerthantheblanksample’s.Whenitcarriesonhydrationreaction,thepeakofinductionperiodhydrationheatis0.19379J/gandtheaccelerationperiodis0.25262J/g.ThesystemNo.128dsamplepowder’s2～50nmmicroporeproportionis51%.Inallhydratedsamples,thedifferenthydrationproducts,suchasC-S-HgelandAFtcanbedariauslyfoumd.

王顺祥,吴其胜,诸华军,等.镍渣和超细硅灰对硅酸盐水泥水化性能的影响[J].混凝土与水泥制品,2017(7):81-85. WANG S X, WU Q S, ZHU Hua-jun,et al.Effects of Nickel Slag and Super Silica Fume on Hydration Performance of Portland Cement[J].China Concrete and Cement Products,2017(7):81-85.

摘  要：研究了胶材用量、水胶比和砂率对C100混凝土抗压强度的影响，并将最佳配合比应用于沈阳皇朝万鑫大厦钢管混凝土施工中。结果表明，胶材用量增加、水胶比降低都能提高C100混凝土的抗压强度，砂率的增加抗压强度先增加后减小，当胶材用量600kg/m3、砂率40%、水胶比在0.25时，C100混凝土的抗压强度达到110MPa以上。Abstract:Theeffectofthecementamount,water-cementratioandsandratiooncompressivestrengthofC100concretewasstudied.TheoptimummixratiowasappliedtothesteeltubeconcreteconstructionofShenyangHuangchaoWanxinmansion.Theresultsshowthattheincreaseofcementamountanddecreaseofwater-cementratiocanimprovethecompressivestrengthofC100concretebutincreasedfirstandthendecreasedwiththeincreaseofsandratio.ThecompressivestrengthofC100concretecanreach110MPawiththecementamount600kg/m3,sandratio40%andwater-cementratio0.25.

尹素花,刘玉,杨晓光,等.C100高强钢管混凝土的生产及工程应用[J].混凝土与水泥制品,2017(7):78-80. YIN S H, LIU Y, YANG X G,et al.Production and Engineering Application of C100 High Strength Concrete Filled Steel Tube[J].China Concrete and Cement Products,2017(7):78-80.

摘 要：为探究后锚固群锚试件在纯弯作用下锚板刚性性能的发挥，设计并制作了9个不同锚板厚度与锚栓间距的后锚固试件，主要研究了试件的破坏形态、极限承载力、锚栓应变、锚板应变和位移。结果表明，当锚板厚度大于18mm和锚栓间距小于10倍锚板厚度时，锚板的强度利用率较高，能达到70%左右。锚栓间距的增加或锚板厚度的增加，都会使后锚固试件的极限荷载得到提高，且锚板厚度的影响更为明显。锚板厚度过小或锚栓间距过大时，锚板应变发展迅速，锚板刚性性能较差。 Abstract: In order to investigate the properties of the rigidity of anchor plate under pure bending, 9 anchor plates with different thickness and anchor arrangement were designed to study the failure mode, ultimate bearing capacity, anchor strain, strain and deformation of anchor plate of specimens. The results show that utilization ratio of anchor plate strength will reached 70%, when the plate thickness more than18mm and anchor distance smaller than 10 times of plate thickness. The increase of the anchor bolt distance or thickness of the anchor plate lead to increasing of the ultimate bearing capacity, and the influence of the anchor plate thickness is more obvious. When the thickness of the anchor plate is too small or the anchor bolt distance is too large, the strain of the anchor plate develops rapidly, and the rigidity of the anchor plate is not excellent.

龙帮云,张恒,杨慧邦,等.后锚固体系纯弯锚板刚性研究[J].混凝土与水泥制品,2017(7):74-77. LONG B Y, ZHANG H ,YANG H B,et al.Research on Rigidity of Pure Bending Plate for Post-installed Anchoring System[J].China Concrete and Cement Products,2017(7):74-77.

摘 要：使用DYS-2500高温高压岩石三轴试验机对含面层再生混凝土圆柱体进行了单轴压、常规三轴压缩试验研究。试验结果表明，含面层再生混凝土在单轴压和三轴压缩下试验破坏形态有所差别；在围压作用下含面层再生混凝土应力-应变关系曲线发展趋势平缓丰满，没有明显的峰值点；围压有助于提高含面层再生混凝土的峰值应变和峰值应力；15MPa围压时的峰值应力约为单轴压下峰值应力4.4～4.7倍，取代率对峰值应力的影响甚微；围压15MPa时的峰值应变比围压0时的峰值应变增加了7%～13%；取代率对再生混凝土的峰值应变有一定影响，大体呈递减趋势，但不明显。 Abstract: The regenerative concrete cylinder surface uniaxial and conventional triaxial compression test research was carried out by using DYS-2500 high temperature and high pressure rock triaxial testing machine, the test results show that including surface recycled concrete under uniaxial compression and triaxial compression test failure pattern is different. The stress-strain curve under the effect of confining pressure containing recycled concrete surface and develop gentle plump and have no obvious peak point. Confining pressure is helpful to enhancing the surface peak strain of the recycled concrete and the peak stress. When the confining pressure is 15MPa, the peak stress is the 4.4~4.7 times of that under uniaxial pressure. The influence of replacement ratio on peak stress is little. The peak strain of the confining pressure under 15MPa increased by 7%~13% than that under 0. The replacement ratio of recycled concrete has a certain influence on the peak strain, generally showed a trend of decline, but not obvious.

王海龙,赵什光,牛小玲,等.含面层再生混凝土常规三轴试验研究[J].混凝土与水泥制品,2017(7):70-73. WANG H L, ZHAO S G, NIU X L,et al.Experimental Study on Conventional Triaxial of Surface Recycled Concrete[J].China Concrete and Cement Products,2017(7):70-73.