第九期_2020_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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第九期

资源环境综合效益下绿色建筑技术评价方法研究——评《基于资源与环境综合效益的绿色建筑技术评价》

李丽萍

2020年第9期

摘要

引用本文

目前，建筑行业消耗了大量的自然资源，破坏了生态环境。在建筑活动中如何实现资源与环境综合效益的最大化是个难题。李纪伟等编著的《基于资源与环境综合效益的绿色建筑技术评价》一书分析了建筑活动过程中材料生产、建设施工、运营维护、废弃拆除4个阶段对于环境的影响和资源的消耗，根据系统动力学分析方法预测了12种资源、环境因素的影响，根据各种因素，提出了基于资源环境综合效益的绿色建筑技术评价方法，并编制出相应的评价工具以验证评价方法的合理性。笔者通过对该书的学习，总结了以下几个方面的内容以供参考。

李丽萍.资源环境综合效益下绿色建筑技术评价方法研究—评《基于资源与环境综合效益的绿色建筑技术评价》[J].混凝土与水泥制品,2020(9):97.

装配式结构节点应力分析与抗震性能研究 ——评《装配式结构节点抗震性能》

陈小兵

2020年第9期

摘要

引用本文

装配式混凝土建筑结构具有施工速度快、施工工艺简单、环境友好、节省资源的特点，是我国建筑工业化发展的主要方向。影响装配式混凝土结构稳定性的关键环节是梁柱连接处，其直接决定着结构框架的内力分配、弯矩传递及整体性能。目前，我国对装配式结构节点力学性能规律的认识还不足，导致节点实际应用受到限制。为了加强其认识，张延年等人编著了《装配式结构节点抗震性能》一书，该书以物理试验和理论分析为研究方法，从强度、刚度、耗能、抗震、应力、应变等方面，全面系统地对阶梯钢板式节点、钩挂式节点、加强环节点的抗震性能和机理进行了分析，揭示了3类节点抗震承载力、强度退化、刚度退化、耗能行为、力学效应的变化规律。笔者基于该书的学习，总结重点章节如下。

陈小兵.装配式结构节点应力分析与抗震性能研究—评《装配式结构节点抗震性能》[J].混凝土与水泥制品,2020(9):96.

聚丙二醇掺量对碱矿渣水泥砂浆性能和水化过程的影响

张兰芳1,2，付彬鸿2,3，宋松松2,3，梁秋爽4

2020年第9期

摘要

引用本文

摘要：研究了不同掺量聚丙二醇对碱激发矿渣（AAS）水泥砂浆流动度、力学性能和干缩的影响，并通过电化学交流阻抗法（EIS）探讨了其对砂浆水化过程的影响。结果表明，聚丙二醇的掺入能够显著提高AAS水泥砂浆的流动性，且掺量越大，流动性提高越明显，但砂浆密度有轻微降低。聚丙二醇的掺入降低了AAS水泥砂浆的抗折、抗压强度，但是随着龄期的增长，抗折、抗压强度均有所提高。掺入聚丙二醇能有效降低AAS砂浆的干缩。当聚丙二醇掺量为1%～3%时，各龄期的孔溶液电阻值（R1）较基准组有所减小，聚丙二醇抑制了AAS砂浆的水化反应。当掺量为5%～9%时，各龄期的R1大于基准组，AAS砂浆水化反应加快，且R1随着聚丙二醇掺量的增加而增大。 Abstract: The effect of different content of polypropylene glycol on the fluidity, mechanical properties and shrinkage of alkali-activated slag（AAS） cement mortar was studied, and its influence on hydration process of AAS mortar was discussed by electrochemical impedance spectroscopy（EIS）. The results show that the polypropylene glycol can improve the fluidity of AAS cement mortar, and the greater the content of polypropylene glycol, the more obvious the fluidity increase, but the density of the mortar slightly decreases. The flexural and compressive strength of AAS cement mortar decrease with the addition of polypropylene glycol, but with the increase of age, the flexural and compressive strength increase. Polypropylene glycol can effectively reduce the shrinkage of AAS mortar. The pore solution resistance（R1） of AAS mortar is lower than that of the control group when the polypropylene glycol content is 1%~3%, polypropylene glycol inhibits the hydration reaction. When the content is 5%~9%, R1 is greater than that of the control group, the hydration reaction of AAS mortar is accelerated, and R1 increases with the increase of the polypropylene glycol content.

张兰芳,付彬鸿,宋松松,等.聚丙二醇掺量对碱矿渣水泥砂浆性能和水化过程的影响[J].混凝土与水泥制品,2020(9):92-95. ZHANG L F,FU B H,SONG S S,Effect of Polypropylene Glycol Content on Performance and Hydration Process of Alkali Activated Slag Cement Mortar[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):92-95.

玻璃粉和钢渣对自密实混凝土力学性能的影响

孟继军

2020年第9期

摘要

引用本文

摘要：为研究玻璃粉和钢渣协同使用对自密实混凝土力学性能的影响，分别以20%、30%和40%的玻璃粉替代水泥，40%、60%和80%钢渣替代细骨料，制备了9种不同配合比的自密实混凝土试件，通过坍落度试验、J型环试验、V型漏斗试验和L型仪试验测试了新拌自密实混凝土的工作性，并分析了硬化后自密实混凝土的抗压强度、劈裂抗拉强度、抗折强度和弹性模量。结果表明，当玻璃粉和钢渣协同使用时，可以显著提高钢渣替代细骨料的比例，替代比例高达80%；自密实混凝土的和易性随着玻璃粉含量的增加而增大，随钢渣掺量的增加而减小；抗压强度、劈裂抗拉强度、抗折强度和弹性模量随钢渣掺量的增加而增加，随玻璃粉掺量的增加逐渐减小。自密实混凝土中钢渣和水泥的最佳掺量分别为80%和20%。 Abstract: In order to study the effect of glass powder and steel slag on the mechanical properties of self-compacting concrete, 9 kinds of self-compacting concrete specimens with different mix proportions were prepared by using 20%, 30% and 40% glass powder instead of cement, 40%, 60% and 80% steel slag instead of fine aggregate, respectively. The workability of fresh self-compacting concrete was tested by slump flow test, J-Ring test, V-funnel test and L-box test, and the compressive strength, splitting tensile strength, flexural strength and elastic modulus of hardened self-compacting concrete were analyzed. The results show that when glass powder and steel slag are used together, the substitution ratio of steel slag to replace fine aggregate can significantly increase, and the substitution ratio is as high as 80%. The workability of self-compacting concrete increases with the increase of glass powder content, and decreases with the increase of steel slag content. The compressive strength, splitting tensile strength, flexural strength and elastic modulus increase with the increase of steel slag content, and decrease with the increase of glass powder content. The optimum content of steel slag and cement in self-compacting concrete is 80% and 20%, respectively.

孟继军.玻璃粉和钢渣对自密实混凝土力学性能的影响[J].混凝土与水泥制品,2020(9):88-91. MENG J J.Effect of Glass Powder and Steel Slag on the Mechanical Properties of Self-compacting Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):88-91.

施工因素对地铁车站侧墙混凝土早期裂缝影响监测分析

徐文1,2，李忠超3，张建亮2，张坚2，汪洋2

2020年第9期

摘要

引用本文

摘要：监测了不同施工季节、模板材质和拆模时间等工况下某地铁车站主体结构侧墙混凝土温度、应变历程，分析了其对混凝土早期收缩开裂的影响。结果表明，施工时气温越高，侧墙混凝土温升、温降、温降速率以及温降收缩越大，开裂风险也显著上升。使用钢模板有利于早期散热，可显著降低侧墙混凝土的温升与温度峰值，降低其开裂风险。延长木模板拆模时间可减小侧墙混凝土的温降速率，利用混凝土的徐变效应抑制开裂风险。上述施工因素变化过程中，侧墙混凝土的里表温差及其引起的开裂风险总体较小。 Abstract: The temperature and strain history of sidewall concrete of a metro station main structure were monitored under conditions including different construction seasons, form materials and its removal time, based on which the effects of these conditions on the early age cracking of sidewall concrete were analyzed furtherly. The results show that the temperature rise, temperature drop, temperature drop rate and shrinkage deformation at temperature drop stage of sidewall concrete increase with the increase of air temperature during construction, and the cracking risk of sidewall concrete also rises obviously. The application of steel form helps hydration heat dissipation and decreases the temperature rise and peak of sidewall concrete significantly, as well as the cracking risk. Removing wood form later decreases the temperature drop rate and cracking risk of sidewall concrete because of creep effect. The temperature difference between center and surface of sidewall concrete and the cracking risk caused by it are always small under the above variable construction conditions.

徐文,李忠超,张建亮,等.施工因素对地铁车站侧墙混凝土早期裂缝影响监测分析[J].混凝土与水泥制品,2020(9):84-87. XU W,LI Z C,ZHANG J J,et al.Monitoring Analysis of Influence of Construction Factors on Early Age Cracking of Sidewall Concrete in Metro Station Engineering[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):84-87.

表面硬度法检测套筒灌浆料抗压强度试验研究

吴玉龙1，丁晨晨1,2，顾盛1，卢康昕3，孙才勇1

2020年第9期

摘要

引用本文

摘要：提出了以DL型里氏硬度计作为检测设备的钢筋套筒连接灌浆料抗压强度无损检测方法，测试了灌浆料试件的表面硬度，并建立了测强曲线。研究结果表明，灌浆料试件的表面硬度基本服从正态分布，前后两次表面硬度测试结果的重复性较好。试件的表面硬度与抗压强度具有强正相关性，推荐采用指数回归方法建立测强曲线，相关系数可达0.945。 Abstract: A non-destructive testing method for the compressive strength of grouting materials for steel sleeves using DL type Leeb hardness tester as a testing device was put forward, and the surface hardness of grouting materials was tested and the strength curve was established. The results show that the surface hardness of grouting materials is normally distributed, and the surface hardness test has good repeatability. The surface hardness of the specimen is strongly correlated with the compressive strength, and it is recommended to use the exponential function regression to establish strength curve, and the correlation coefficient can reach 0.945.

吴玉龙,丁晨晨,顾盛,等.表面硬度法检测套筒灌浆料抗压强度试验研究[J].混凝土与水泥制品,2020(9):79-83. WU Y L,DING C C,GU S,et al.Experimental Study on Compressive Strength of Grouting Materials for Sleeves by Surface Hardness Method[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):79-83.

T/CECS 10082—2020《混凝土用钙镁复合膨胀剂》标准解读

陆安群1,2，徐文3，王瑞1,2，王育江1,2，田倩1,2，刘加平1,3

2020年第9期

摘要

引用本文

摘要：T/CECS 10082—2020《混凝土用钙镁复合膨胀剂》已于2020年6月1日开始实施，为便于准确贯彻实施该标准的具体要求和规定，介绍了T/CECS 10082-2020标准的编制背景、编制目的和意义，并对其主要条款作了解读。 Abstract: The standard T/CECS 10082—2020 Calcium and Magnesium Oxides Based Expansive Agent for Concrete has been implemented on June 1, 2020. As a new standard, in order to carry out and implement the specifications of the standard reasonably and scientifically for the users，the establishing background, purpose and meanings of the standard are introduced, and the main issues of the standard are interpreted.

陆安群,徐文,王瑞,等.T/CECS 10082—2020《混凝土用钙镁复合膨胀剂》标准解读[J].混凝土与水泥制品,2020(9):74-78. LU A Q,XU W,WANG R,et al.Interpretation of T/CECS 10082—2020 Calcium and Magnesium Oxides Based Expansive Agent for Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):74-78.

基于不同连接技术的装配式混凝土剪力墙抗震性能研究进展

姚丹丹1，刘文锋2

2020年第9期

摘要

引用本文

摘要：研究了装配式剪力墙的连接技术，探讨了水平及竖向接缝结合部位连接形式和钢筋连接形式，分析了不同连接技术的研究现状和抗震性能，并对装配式剪力墙连接技术的发展进行了展望。 Abstract: The connection technology of prefabricated shear wall is studied, and the horizontal and vertical seam binding site connection form and the reinforced connection form are discussed, and the research status and seismic performance of different connection technologies are analyzed, and the development of prefabricated shear wall connection technologies is prospected.

姚丹丹,刘文锋.基于不同连接技术的装配式混凝土剪力墙抗震性能研究进展[J].混凝土与水泥制品,2020(9):68-73. YAO D D,LIU W F.Research Progress on Seismic Performance of Prefabricated Concrete Shear Walls Based on Different Connection Technologies[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):68-73.

钢筋桁架混凝土叠合板底板吊装受力性能分析

姚一辰1，韩普各2

2020年第9期

摘要

引用本文

摘要：通过叠合板脱模、吊装荷载的理论计算，建立了有限元模型，利用理论计算验证了有限元模型的正确性，得到基于共节点模型以对叠合板进行较真实的仿真模拟。讨论了吊绳、节间、悬挑长度、板宽及吊环等影响叠合板吊装的主要因素，在最不利工况下分析了各因素对叠合板受力性能的影响。 Abstract: Through the theoretical calculation of the demoulding and hoisting load of composite slab, the finite element model is established. The correctness of the finite element model is verified by the theoretical calculation. The model based on the common node can simulate the composite slab more realistically. The main factors that affect the hoisting of the composite slab, such as the lifting rope, the internode, the cantilever length, the width of slab and the hoisting lug are discussed. Under the most unfavorable condition, the influence of various factors on the mechanical properties of composite slabs is analyzed.

姚一辰,韩普各.钢筋桁架混凝土叠合板底板吊装受力性能分析[J].混凝土与水泥制品,2020(9):62-67. YAO Y C,HAN P G.Analysis of Mechanical Performance of Reinforced Concrete Composite Slabs with Steel-bar Truss[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):62-67.

轻质混凝土夹芯复合墙板传热系数研究与工程应用

尚仁杰1，杨潇1，侯兆新1，寅志强1，孙小曦2

2020年第9期

摘要

引用本文

摘要：蒸压加气混凝土与岩棉复合的围护墙板是一种新型的建筑围护结构板材，不需要附加保温层就可满足寒冷地区的热工要求。GB 50176—2016《民用建筑热工设计规范》就如何计算围护墙板的热工参数给出了计算方法，但需要相邻部分热阻比值不大于1.5，当热阻比值大于1.5时需要通过传热有限元计算考虑热桥的影响，给传热系数计算带来困难。基于此，提出了一种传热系数的简化计算方法，借助线性变截面的热传导公式，考虑了复合板肋部热桥影响，以综合传热系数最大为条件，得到了综合传热系数和综合热阻。利用所提出的计算方法对某工程外围护墙板进行了传热系数计算，并与有限元计算结果进行了对比，相差仅0.3%，可以满足工程设计要求。 Abstract: The integrated lightweight composite wallboard made of autoclaved aerated concrete and rock wool panel is a new type of building enclosure system, which can meet the thermal requirements of cold areas in China without additional insulation. GB 50176—2016 The Code for Thermal Design of Civil Buildings gives a thermal calculation method, which requires the thermal resistance ratio of adjacent parts to be less than 1.5, or else it needs to consider the influence of heat bridge by heat transfer finite element calculation. The finite element method brings difficulties to thermal design. Therefore a heat transfer calculation method based on the linear variable cross-section considering the thermal bridge effect of the composite ribs is put forward, and the heat transfer coefficient and thermal resistance of the wallboard are obtained under the condition of maximum heat transfer. The heat transfer coefficient of the composite wallboard is calculated using the method in this paper, and the results are compared with the finite element calculation method, the difference is only 0.3%, which can meet the engineering design requirements.

尚仁杰,杨潇,侯兆新,等.轻质混凝土夹芯复合墙板传热系数研究与工程应用[J].混凝土与水泥制品,2020(9):57-61. SHANG R J,YANG X,HOU Z X,et al.Study and Application of Heat Transfer Coefficient of Lightweight Concrete Sandwich Composite Wallboard[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):57-61.

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