第一期_2022_《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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第一期

透水混凝土强度与透水系数关系模型研究

曲广雷1，2，常广利2，王显利2，李梓赫3，刘浩宇3，孙祥涛2，李欣2

2022年第2期

摘要

引用本文

摘要：为建立透水混凝土抗压强度与透水系数的定量关系模型，制备了透水混凝土试件，并测试了试件的有效孔隙率、透水系数和28 d抗压强度。结合现有模型，建立了基于Griffith断裂理论的数学关系模型，并验证了模型的有效性；基于本文提出的模型，选取合适参数，可以对透水混凝土性能进行有效预测。 Abstract: In order to establish a quantitative relationship model between the compressive strength and the permeable coefficient of pervious concrete, pervious concrete specimens were prepared through laboratory tests, and the effective porosity, permeable coefficient and 28 d compressive strength were measured. Combined with the existing model, the mathematical relation model based on Griffith fracture theory was established and the validity of the model was verified. Based on the model proposed in this article, selecting appropriate parameters can effectively predict the performance of pervious concrete.

曲广雷,常广利,王显利,等.透水混凝土强度与透水系数关系模型研究[J].混凝土与水泥制品,2022(2):22-26. QU G L,CHANG G L,WANG X L,et al.Study on the Relationship Model Between Pervious Concrete Strength and Pervious Coefficient[J].China Concrete and Cement Products,2022(2):22-26.

《混凝土与水泥制品》“3D打印混凝土”与“节能利废混凝土”专题征稿启事

摘要

引用本文

再生PET塑料骨料对砂浆单轴受压性能的影响

陆俊1，鲍聪2，方刘基2，占海华3，梁超锋2

2022年第1期

摘要

引用本文

摘要：利用废弃PET塑料制备了再生PET塑料骨料（RPA），研究了RPA部分取代天然细骨料（0、10%、20%、30%、40%）对砂浆单轴受压性能的影响，并建立了掺RPA砂浆的单轴受压应力-应变本构关系。结果表明：随着RPA取代率的增加，试件的延性增加，应力-应变曲线上升段和下降段斜率逐渐降低，峰值应力和弹性模量逐渐降低；试件的峰值应变、极限应变和抗压韧性指数均随着RPA取代率的增加而增大；建立的掺RPA砂浆单轴受压本构方程计算结果与试验结果吻合较好。 Abstract: Recycled PET plastic aggregate(RPA) was prepared from waste PET plastics. The effect of RPA partially replacing natural fine aggregate (0, 10%, 20%, 30%, 40%) on the uniaxial compressive properties of mortar was studied, and the uniaxial compressive stress-strain constitutive relationship of mortar mixed with RPA was established. The results show that with the increase of RPA replacement rate, the ductility of the specimen increases, the slopes of the rising and falling sections of the stress-strain curve gradually decrease, and the peak stress and elastic modulus gradually decrease. The peak strain, ultimate strain and compressive toughness index increase with the increase of RPA replacement rate. The established constitutive equation of the mortar mixed with RPA under uniaxial compression is in good agreement with the experimental results.

陆俊,鲍聪,方刘基,等.再生PET塑料骨料对砂浆单轴受压性能的影响[J].混凝土与水泥制品,2022(1):95-99. LU J,BAO C,FANG L J,et al.Effect of Recycled PET Plastic Aggregate on Uniaxial Compression Performance of Mortar[J].China Concrete and Cement Products,2022(1):95-99.

搅拌站废水对混凝土抗冻性能与力学性能的影响研究

胡涌琼

2022年第1期

摘要

引用本文

摘要：研究了搅拌站废水掺量（25%、35%、45%）对混凝土冻融循环后的质量损失、外观形态、动弹性模量及抗压强度的影响规律，建立了掺废水混凝土的冻融损伤模型。结果表明：当废水掺量为25%时，试件的质量损失较大，但抗压强度及动弹性模量仍高于普通混凝土；当废水掺量为35%和45%时，混凝土的抗冻性能得到显著提高，但废水掺量为45%的混凝土动弹性模量下降较快，废水掺量为35%的混凝土抗冻性能最佳；建立的冻融损伤模型能够较好地反映掺废水混凝土的冻融损伤演化规律。 Abstract: The effects of the content of wastewater from concrete mixing station(25%, 35%, 45%) on the mass loss, appearance, dynamic elastic modulus and compressive strength of concrete after freeze-thaw cycle were studied, and the freeze-thaw damage model of concrete mixed with wastewater was established. The results show that when the content of wastewater is 25%, the mass loss of the specimen is large, but the compressive strength and dynamic elastic modulus are still higher than those of ordinary concrete. When the wastewater content is 35% and 45%, the frost resistance of concrete is significantly improved, but the dynamic elastic modulus of concrete with wastewater content of 45% decreases rapidly, and the frost resistance of concrete with wastewater content of 35% is the best. The established freeze-thaw damage model can better reflect the freeze-thaw damage evolution law of concrete mixed with wastewater.

胡涌琼.搅拌站废水对混凝土抗冻性能与力学性能的影响研究[J].混凝土与水泥制品,2022(1):89-94. HU Y Q.Influence of Wastewater from Concrete Mixing Station on the Frost Resistance and Mechanical Properties of Concrete[J].China Concrete and Cement Products,2022(1):89-94.

废石粉对3D打印水泥砂浆性能的影响研究

邢家瑞，于淇，全世涛，黎玥琨，刘超，邓智聪，张亚梅

2022年第1期

摘要

引用本文

摘要：研究了石材加工产生的废石粉替代部分水泥对3D打印水泥砂浆性能的影响。结果表明：总体上，随着废石粉掺量的增加，砂浆的流动度降低，静态屈服应力提高，但凝结时间变化不明显；通过调整减水剂掺量可以改善废石粉对3D打印水泥砂浆流动性和可建造性的不利影响；废石粉的掺入对3D打印水泥砂浆的力学性能和层间界面黏结强度不利。 Abstract: The effect of replacing part of cement with waste stone powder produced by stone processing on the performance of 3D printing cement mortar was studied. The results show that with the increase of the waste stone powder content, the fluidity of cement mortar decreases and the static yield stress increases in general, but the setting time does not change significantly. The adverse effect of waste stone powder on the fluidity and constructability of 3D printing cement mortar can be improved by adjusting the amount of water reducing agent. The incorporation of waste stone powder is detrimental to the mechanical properties and interface bonding strength of 3D printing cement mortar.

邢家瑞,于淇,全世涛,等.废石粉对3D打印水泥砂浆性能的影响研究[J].混凝土与水泥制品,2022(1):84-88. XING J R,YU Q,QUAN S T,et al.Study on the Influence of Waste Stone Powder on Performance of 3D Printing Cement Mortar[J].China Concrete and Cement Products,2022(1):84-88.

JC/T 2602—2021《预应力混凝土U形板桩》标准解读

蒋元海，刘红飞，熊厚仁，黄殿武，华昕若

2022年第1期

摘要

引用本文

摘要：为便于JC/T 2602—2021《预应力混凝土U形板桩》的使用方准确理解标准条款的具体含义，正确贯彻实施标准条款的具体要求和规定，简述了该标准的编制背景、编制目的和意义，解释说明了标准条款的具体内容，并提出了实施过程中应注意的问题。 Abstract: In order to facilitate the user of JC/T 2602—2021 Prestressed Concrete U-shaped Sheet Piles to accurately understand the specific meaning of the standard terms and correctly implement the specific requirements and provisions of the standard terms, the preparation background, purpose and significance of the JC/T 2602—2021 Prestressed Concrete U-shaped Sheet Piles is briefly described, the specific contents of the standard provisions are explained in detail, and the problems that should be paid attention to in the implementation process are put forward.

蒋元海,刘红飞,熊厚仁,等.JC/T 2602—2021《预应力混凝土U形板桩》标准解读[J].混凝土与水泥制品,2022(1):80-83. JIANG Y H,LIU H F,XIONG H R,et al.Interpretation on JC/T 2602—2021 Prestressed Concrete U-shaped Sheet Piles[J].China Concrete and Cement Products,2022(1):80-83.

混凝土轻质墙板上墙含水率对干燥收缩影响的试验研究

夏彬华1，杨伟军1，易思容1，杨建宇1，姜鹏霄2

2022年第1期

摘要

引用本文

摘要：针对混凝土轻质墙板的上墙含水率及其对墙体干缩性能的影响，进行了含水率试验，研究了混凝土轻质墙板上墙含水率对干缩性能及其防裂措施的影响，探索了混凝土轻质墙板干缩随含水率的变化规律，提出了混凝土轻质墙板含水率时变模型，可为墙板合理的养护或上墙时间、干缩裂缝控制提供参考。 Abstract: Aiming at the moisture content during construction of the concrete lightweight wallboard and its influence on the dry shrinkage performance of the wall, the moisture content test was carried out. The influence of moisture content during construction of concrete lightweight wallboard on dry shrinkage performance and crack prevention measures was studied, and the variation law of dry shrinkage of concrete lightweight wallboard with moisture content was studied. Furthermore, the time-varying model of moisture content of concrete lightweight wallboard was put forward. The results can provide a reference for the reasonable maintenance time and the control of dry shrinkage cracks.

夏彬华,杨伟军,易思容,等.混凝土轻质墙板上墙含水率对干燥收缩影响的试验研究[J].混凝土与水泥制品,2022(1):76-79,94. XIA B H,YANG W J,YI S R,et al.Experimental Study on the Effect of Moisture Content During Construction on Dry Shrinkage of Concrete Lightweight Wallboard[J].China Concrete and Cement Products,2022(1):76-79,94.

玄武岩纤维筋混凝土梁正截面抗弯承载力试验研究

熊琦龙1，周凯1，范佩1，吴小勇1，2

2022年第1期

摘要

引用本文

摘要：为了研究BFRP筋混凝土梁的抗弯性能，进行了不同配筋率和不同配筋形式BFRP筋混凝土梁的四点弯曲试验，分析了试件的跨中挠度、抗弯承载力和裂缝分布规律。结果表明：BFRP筋混凝土梁的弯矩-挠度曲线表现出试件开裂、峰值弯矩为转折点的三折线特征；BFRP筋与钢筋混合配筋梁的弯矩-挠度曲线表现出试件开裂、钢筋屈服和峰值弯矩为转折点的四折线特征；BFRP筋与钢筋混合配筋能提高钢筋混凝土梁的抗弯承载力，减小BFRP筋混凝土梁的挠度和裂缝宽度，同时发挥BFRP筋强度高的特点；BFRP筋与钢筋混合配筋梁符合平截面假定，并给出了正截面抗弯承载力计算公式。 Abstract: In order to study the flexural performance of concrete beams reinforced with BFRP rebar, the four-point bending tests of BFRP reinforced concrete beams with different reinforcement ratios and different reinforcement forms were carried out, and the mid-span deflection, flexural capacity, and crack distribution of the specimens were analyzed. The results show that the bending moment-deflection curves of BFRP reinforced concrete beams show the characteristics of three-fold curve with specimen cracking and peak bending moment as the turning point. The bending moment-deflection curves of beams reinforced with BFRP rebar and steel rebar show the characteristics of four-fold curve with specimen cracking, steel yield and peak bending moment as the turning point. The mixed reinforcement of BFRP rebar and steel rebar can improve the flexural capacity of the reinforced concrete beams, reduce the deflection and crack width of BFRP reinforced concrete beams, and the strength of BFRP rebar can be sufficiently utilized. The beams reinforced with BFRP rebar and steel rebar conform to the plane section assumption, and the calculation formula of flexural capacity of the beams is given.

熊琦龙,周凯,范佩,等.玄武岩纤维筋混凝土梁正截面抗弯承载力试验研究[J].混凝土与水泥制品,2022(1):71-75. XIONG Q L,ZHOU K,FAN P,et al.Experimental Study on Flexural Capacity of Cross Section of Basalt Fiber Reinforced Concrete Beams[J].China Concrete and Cement Products,2022(1):71-75.

FRP布加固钢筋混凝土短柱轴压性能试验研究

闫清峰1，张纪刚1，2，张宜聪1，张梦琳1，时成龙1

2022年第1期

摘要

引用本文

闫清峰,张纪刚,张宜聪,等.FRP布加固钢筋混凝土短柱轴压性能试验研究[J].混凝土与水泥制品,2022(1):64-70. YAN Q F,ZHANG J G,ZHANG Y C,et al.Experimental Study on Axial Compression Performance of Reinforced Concrete Short Columns Strengthened with FRP Sheets[J].China Concrete and Cement Products,2022(1):64-70.

混杂纤维再生混凝土轴压应力-应变关系研究

牛海成1，吉珈琨2，张耀宗1

2022年第1期

摘要

引用本文

摘要：研究了再生粗骨料取代率、纤维的体积掺量和掺入方式对再生混凝土性能的影响，根据实测应力-应变曲线，计算出了各组试件的压缩韧度指数和弹性模量。结果表明：再生混凝土的抗压强度略低于天然骨料混凝土，掺入纤维可显著提高再生混凝土的抗压强度、韧性和弹性模量；单掺时，对于抗压强度和弹性模量，玻璃纤维、PVA纤维的最佳掺量分别为0.45%、0.05%，对于韧性，玻璃纤维、PVA纤维的最佳掺量分别为0.45%、0.10%；当再生粗骨料取代率为50%时，玻璃纤维和PVA纤维混杂掺加对再生混凝土抗压强度、韧性和弹性模量的提升效果优于单一纤维；当再生粗骨料取代率为100%时，单一纤维对再生混凝土抗压强度、韧性和弹性模量的提升效果优于混杂纤维。 Abstract: The effects of recycled coarse aggregate replacement rate, fiber volume content and fiber mixing method on the properties of recycled concrete were studied. According to the measured stress-strain curve, the compressive toughness index and elastic modulus were calculated. The results show that the compressive strength of recycled concrete is slightly lower than that of natural aggregate concrete, and the addition of fibers can significantly improve the compressive strength, axial toughness and elastic modulus of recycled concrete. In single blending, for compressive strength and elastic modulus, the optimum content of glass fiber and PVA fiber is 0.45% and 0.05% respectively, and for toughness, the optimum content of glass fiber and PVA fiber is 0.45% and 0.10% respectively. When the replacement rate of recycled coarse aggregate is 50%, the improvement effect of mixed addition of glass fiber and PVA fiber on the compressive strength, toughness and elastic modulus of recycled concrete is better than that of single fiber. When the replacement rate of recycled coarse aggregate is 100%, the improvement effect of single fiber on the compressive strength, toughness and elastic modulus of recycled concrete is better than that of hybrid fiber.

牛海成,吉珈琨,张耀宗.混杂纤维再生混凝土轴压应力-应变关系研究[J].混凝土与水泥制品,2022(1):58-63. NIU H C,JI J K,ZHANG Y Z.Stress-strain Relationship of Hybrid Fiber Reinforced Recycled Concrete Under Axial Compression[J].China Concrete and Cement Products,2022(1):58-63.

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