第十一期_2021_《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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第十一期

《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

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植生混凝土的性能研究及在坝坡防护工程中的应用

董全文1，贾文文2，谢慧东2

2021年第11期

摘要

引用本文

摘要：研究了不同成型方式和水灰比对植生混凝土性能的影响。结果表明：振动成型的植生混凝土的连续孔隙率最小，插捣成型的植生混凝土的抗压强度最高，压捣成型的植生混凝土的连续孔隙率和抗压强度均满足相关设计要求；植生混凝土的抗压强度随着水灰比的增大而降低，连续孔隙率随着水灰比的增大而增大；当水灰比为0.27时，采用压捣成型方式制备得到的植生混凝土的性能满足相关设计要求，并已成功应用于济南赵庄险工48#坝坝坡防护工程。 Abstract: The effects of different forming methods and water-cement ratio on the properties of planting concrete were studied. The results show that the porosity of the planting concrete based on vibration molding is the smallest, the compressive strength of the planting concrete based on plug tamping is the highest, and the porosity and compressive strength of the planting concrete based on pressure tamping meet the relevant design requirements. The compressive strength of planting concrete decreases with the increase of water-cement ratio, and the porosity increases with the increase of water-cement ratio. When the water-cement ratio is 0.27, the performance of planting concrete prepared by pressure tamping method meets the relevant design requirements, and has been successfully applied to the dam slope protection project of Zhaozhuang dangerous engineering 48# dam in Jinan.

董全文,贾文文,谢慧东.植生混凝土的性能研究及在坝坡防护工程中的应用[J].混凝土与水泥制品,2021(11):94-98. DONG Q W,JIA W W,XIE H D.Study on Performance of Planting Concrete and Its Application in Dam Slope Protection Engineering[J].China Concrete and Cement Products,2021(11):94-98.

城市垃圾熔融残渣对泡沫混凝土性能的影响

李群杰1, 欧阳东1，赵倩2,3，黄柯柯2,3,林文伟1，熊军红1

2021年第11期

摘要

引用本文

摘要：研究了矿渣、粉煤灰以及热等离子技术处理城市垃圾后的熔融残渣（MWTPT）替代10%的水泥对泡沫混凝土性能的影响，并通过XRD、水化热和SEM方法分析了MWTPT的作用机理。结果表明：MWTPT可以作为矿物掺合料替代水泥制备泡沫混凝土；掺MWTPT泡沫混凝土的抗压强度在后期优于掺粉煤灰的泡沫混凝土，抗折强度在早期优于掺矿渣泡沫混凝土和掺粉煤灰泡沫混凝土；与掺粉煤灰泡沫混凝土相比，掺MWTPT泡沫混凝土的7 d、15 d抗折强度分别提高了19.1%、31.8%。 Abstract: The effects of slag, fly ash and the municipal waste residues after treated by thermal plasma technology(MWTPT) replacing 10% cement on the performance of foamed concrete were studied, and the mechanism of MWTPT was analyzed by XRD, hydration heat and SEM. The results show that MWTPT can be used as mineral admixture instead of cement to prepare foamed concrete. The compressive strength of the foamed concrete with MWTPT is better than that of the foamed concrete with fly ash in the later stage, and the flexural strength is better than that of the foamed concrete with slag and the foamed concrete with fly ash in the early stage. The 7 d and 15 d flexural strength of the foamed concrete with MWTPT are 19.1% and 31.8% higher than those of the foamed concrete with fly ash respectively.

李群杰,欧阳东,赵倩,等.城市垃圾熔融残渣对泡沫混凝土性能的影响[J].混凝土与水泥制品,2021(11):90-93. LI Q J,OUYANG D,ZHAO Q,et al.Influence of the Municipal Waste Residues on the Properties of Foamed Concrete[J].China Concrete and Cement Products,2021(11):90-93.

利用脱硫石膏浆液制备高强水泥基自流平砂浆的应用研究

徐风广，杨凤玲，侯海军，陈小卫

2021年第11期

摘要

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摘要：以铝酸盐水泥为主要胶凝材料，掺入脱硫石膏浆液和普通硅酸盐水泥，制备了地面用水泥基自流平砂浆，通过宏观性能测试（强度、耐磨性和尺寸变化率）和XRD分析，研究了脱硫石膏浆液对水泥基自流平砂浆性能的影响。结果表明：当铝酸盐水泥掺量为30.3%～36.9%、脱硫石膏浆液掺量为18%～28%、普通硅酸盐水泥掺量为5.3%～6.0%、河砂掺量为35%～39%时，制备的水泥基自流平砂浆具有强度高、耐磨性好和收缩率低的特点；脱硫石膏浆液能促进基体中早期AFt的生成，保证后期AFt的生成量，从而提高脱硫石膏浆液水泥基自流平砂浆的强度。 Abstract： The cement-based self-leveling mortar for ground was prepared by using aluminate cement as main cementitious material, adding desulfurization gypsum slurry and ordinary portland cement. The influence of desulfurization gypsum slurry on the properties of cement-based self-leveling mortar was studied by macro performance tests (strength, wear resistance and dimensional change rate) and XRD analysis. The results show that the cement-based self-leveling mortar has the characteristics of high strength, good wear resistance and low shrinkage when the content of aluminate cement is 30.3%～36.9%, the content of desulfurization gypsum slurry is 18%～28%, the content of ordinary portland cement is 5.3%~6.0%, and the content of river sand is 35%～39%. The desulfurized gypsum slurry can promote the formation of early AFt in the matrix and ensure the generation of AFt in the later period, thereby improving the strength of the cement-based self-leveling mortar of the desulfurized gypsum slurry.

徐风广,杨凤玲,侯海军,等.利用脱硫石膏浆液制备高强水泥基自流平砂浆的应用研究[J].混凝土与水泥制品,2021(11):85-89. XU Feng-guang, YANG Feng-ling, HOU Hai-jun,et al.Rescarch on Application of Preparation of High Strength Cement-based Self-leveling Mortar with Desulfurization Gypsum Slurry[J].China Concrete and Cement Products,2021(11):85-89.

钢渣微粉对超高性能混凝土（UHPC）性能的影响

唐咸远，郭彬，马杰灵，罗杰

2021年第11期

摘要

引用本文

摘要：研究了钢渣微粉替代石英粉对超高性能混凝土(UHPC)性能的影响。结果表明：水胶比分别为0.18、0.19的UHPC试件的28 d抗压强度均在120 MPa以上，且水胶比为0.19的UHPC的工作性更好，流动度为195 mm；钢渣微粉替代石英粉对UHPC试件的抗压强度无明显影响；在钢渣微粉掺量为100%的情况下，控制水胶比为0.20、水灰比为0.35、胶砂比为1.63时，可配制28 d抗压强度为147.5 MPa的UHPC。 Abstract: The effect of steel slag powder instead of quartz powder on the properties of ultra-high performance concrete (UHPC) was studied. The results show that the 28 d compressive strength of UHPC specimens with water-binder ratio of 0.18 and 0.19 is more than 120 MPa, and the workability of UHPC with water-binder ratio of 0.19 is better and the fluidity is 195 mm. The substitution of steel slag powder for quartz powder has no obvious effect on the compressive strength of UHPC specimens. When the content of steel slag powder is 100%, the water-binder ratio is 0.20, the water-cement ratio is 0.35 and the binder-sand ratio is 1.63, and the 28 d compressive strength of UHPC can reach 147.5 MPa.

唐咸远,郭彬,马杰灵,等.钢渣微粉对超高性能混凝土（UHPC）性能的影响[J].混凝土与水泥制品,2021(11):82-84,89. TANG X y,GUO B,MA J l,et al.Effect of Steel Slag Powder on the Properties of Ultra-high Performance Concrete (UHPC)[J].China Concrete and Cement Products,2021(11):82-84,89.

橡胶改性泡沫混凝土的物理力学性能及耐高温性能研究

卢军燕1，常帅2

2021年第11期

摘要

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摘要：利用废旧轮胎破碎后的橡胶颗粒替代部分河砂制备了泡沫混凝土，研究了橡胶颗粒掺量、水灰比对混凝土的密度、流动性、抗压强度、劈裂抗拉强度、弹性模量和耐高温性能的影响。结果表明：橡胶颗粒的掺入降低了混凝土的密度、坍落度、抗压强度和弹性模量，但当橡胶颗粒掺量为20％时，试件的抗压强度仍高于10 MPa；试件的劈裂抗拉强度随着橡胶颗粒掺量的增加呈先增后减的趋势，且当橡胶颗粒掺量为20%时强度达到最大；高温对试件的抗压强度不利，与常温相比，经过100 ℃、200 ℃高温处理后，试件的抗压强度分别降低了3.1%~33.0%、25.0%~55.0%。 Abstract: The foamed concrete was prepared by replacing part of river sand with the crushed rubber particles of waste tires. The effects of rubber particle content and water-cement ratio on the density, fluidity, compressive strength, splitting tensile strength, elastic modulus and high temperature resistance of concrete were studied. The results show that the addition of rubber particle reduces the density, slump, compressive strength and elastic modulus of the concrete, but when the rubber particle content is 20%, the compressive strength of the specimen is still higher than 10 MPa. The splitting tensile strength of the specimen first increases and then decreases with the increase of rubber particle content, and reaches the maximum when the rubber particle content is 20%. High temperature is unfavorable to the compressive strength of the specimen. Compared with normal temperature, the compressive strength of the specimen is reduced by 3.1%~33.0% and 25.0%~55.0% after high temperature treatment at 100 ℃ and 200 ℃.

预应力平面桁架钢筋混凝土叠合板底板性能分析

徐帅1,2,孟凡林1,2,李世禹1，梁媛1

2021年第11期

摘要

引用本文

摘要：针对长3.9 m、宽2.5 m的预应力平面桁架钢筋混凝土叠合板底板以及常规钢筋桁架混凝土叠合板底板的受力性能进行了数值模拟，分析了两种叠合板底板在承载力和变形方面的差别。结果表明：预应力平面桁架钢筋混凝土叠合板底板具有很好的承载性能，其充分利用了桁架钢筋腹杆对叠合板受力贡献小的特点，在减少一半腹杆用量的条件下可以发挥与常规钢筋桁架混凝土叠合板底板相近的抗弯性能，在减轻自重的同时，体现出良好的经济性。 Abstract: Numerical simulations were carried out on the mechanical performance of the concrete composite bottom slab with prestressed plane steel bar trusses with the length of 3.9 m and the width of 2.5 m, as well as the conventional concrete composite bottom slab with steel bar trusses, and the differences in the bearing capacity and deformation of the two types of concrete composite bottom slab were analyzed. The results show that the concrete composite bottom slab with prestressed plane steel bar trusses has good load-bearing performance, and it makes full use of the feature that the web bar has little influence on the bending performance of the slab, and it can provide the bending performance similar with the conventional concrete composite bottom slab with steel bar trusses under the condition of reducing the half number of webs, which reduces its own weight and reflects good economic efficiency.

徐帅,孟凡林,李世禹,等.预应力平面桁架钢筋混凝土叠合板底板性能分析[J].混凝土与水泥制品,2021(11):73-76. XU S,MENG F L,LI S Y,et al.Performance Analysis of Concrete Composite Bottom Slab with Prestressed Plane Steel Bar Trusses[J].China Concrete and Cement Products,2021(11):73-76.

钢筋混凝土框架结构与框架薄壳结构的抗震性能和CO2排放研究

杨小卫1，王浩民2

2021年第11期

摘要

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摘要：为了实现抗震性能好且材料节能的结构体系，针对多层办公楼案例，按照我国相关规范设计成钢筋混凝土框架结构和框架薄壳结构，通过弹塑性动力时程分析比较了两种结构体系的抗震性能、材料用量和CO2排放量。结果表明：两种结构体系都能满足“三水准”抗震设防目标；框架结构的最大楼层位移和最大层间位移角比框架薄壳结构大，罕遇地震下框架结构的损伤比框架薄壳结构严重；框架薄壳结构的混凝土、钢筋用量和CO2排放量相比框架结构分别减少了 1 167.7 t、35.1 t和220 t；框架薄壳结构的抗震性能和节能减排性能明显优于框架结构。 Abstract: In order to achieve a structural system with good seismic performance and materials saving, for the case of a multi-storey office building, a reinforced concrete frame structure and a frame shell structure were designed in accordance with Chinese relevant codes. The seismic performance, material consumption and CO2 emission of the two structural systems were compared through elasticplastic dynamic time history analysis. The results show that the two structural systems can meet the "three-level" seismic fortification goal. The maximum floor displacement and maximum interstory displacement angle of the frame structure are larger than those of the frame shell structure, and the damage of frame structure under rare earthquake is more serious than that of frame shell structure. Compared with the frame structure, the amount of concrete, steel bars and CO2 emission of the frame shell structure are reduced by 1 167.7 t, 35.1 t and 220 t respectively. The seismic performance, energy saving and emission reduction performance of frame shell structure are obviously better than those of frame structure.

杨小卫,王浩民.钢筋混凝土框架结构与框架薄壳结构的抗震性能和CO2排放研究[J].混凝土与水泥制品,2021(11):68-72. YANG X W,WANG H M.Research on Seismic Performance and CO2 Emissions of Reinforced Concrete Frame Structure and Frame Shell Structure[J].China Concrete and Cement Products,2021(11):68-72.

粉煤灰与稻草纤维复掺对混凝土力学性能的影响

刘涛，赵明皓，聂国豪，韩龙宇，林锋，巫绪涛

2021年第11期

摘要

引用本文

摘要：研究了丝状、杆状稻草纤维分别与粉煤灰复掺对混凝土力学性能的影响。结果表明：随着稻草纤维和粉煤灰掺量的增加，混凝土的抗压强度、劈裂抗拉强度和抗折强度总体呈下降趋势，但稻草纤维能够有效改善混凝土的脆性破坏形态；丝状稻草纤维对混凝土性能的不利影响小于杆状稻草纤维；当丝状稻草纤维掺量为0.3%、粉煤灰掺量为20%时，混凝土的抗压强度较高；当丝状稻草纤维掺量为0.3%、粉煤灰掺量为10%时，混凝土的劈裂抗拉强度较高；当丝状稻草纤维掺量为0.3%、粉煤灰掺量为20%时，混凝土的抗折强度较高。 Abstract: The effects of filamentary straw fiber and rod-shaped straw fiber and fly ash on mechanical properties of concrete were studied. The results show that the compressive strength, splitting tensile strength and flexural strength of concrete generally decrease with the increase of straw fiber content and fly ash content, but straw fiber can effectively improve the brittle damage pattern of concrete. The adverse effect of filamentous straw fiber on the performance of concrete is less than that of rod-shaped straw fiber. The compressive strength of the concrete is higher when the filamentary straw fiber content is 0.3% and the fly ash content is 20%. The splitting tensile strength of the concrete is higher when the filamentary straw fiber content is 0.3% and the fly ash content is 10%. The flexural strength of the concrete is higher when the filamentary straw fiber content is 0.3% and the fly ash content is 20%.

刘涛,赵明皓,聂国豪,等.粉煤灰与稻草纤维复掺对混凝土力学性能的影响[J].混凝土与水泥制品,2021(11):64-67,72. LIU T,ZHAO M H,NIE G H.Study on the Mechanical Properties of Fly Ash and Straw Fiber Composite Concrete[J].China Concrete and Cement Products,2021(11):64-67,72.

CFRP编织管约束混凝土短柱轴压性能试验研究

张浩龙，王文昊，徐迎，王鹏，孙大威，吴建钦

2021年第11期

摘要

引用本文

摘要：通过21根碳纤维增强复合材料（CFRP）编织管约束混凝土短柱的准静态轴压试验，研究了CFRP层数、水灰比、试件长径比对混凝土短柱抗压强度和变形性能的影响。结果表明：CFRP编织管约束试件的承载力相比素混凝土试件至少提高了10%；水灰比在一定范围内变化时，对试验结果的影响不大；试件长径比越小，CFRP对最大荷载的提升作用越明显。 Abstract: Through the quasi-static axial compression tests of concrete short columns confined by 21 carbon fiber reinforced composite material(CFRP) braided tubes, the effects of the number of CFRP layer, water-cement ratio, and length-diameter ratio of specimen on the compressive strength and deformation characteristics of concrete short columns were studied. The results show that the bearing capacity of the CFRP tube confined column is at least 10% higher than that of the plain concrete column. The water-cement ratio has little effect on the test results within a certain range. The smaller the length-diameter ratio of the column, the more obvious the increase in the maximum load by CFRP.

张浩龙,王文昊,徐迎,等.CFRP编织管约束混凝土短柱轴压性能试验研究[J].混凝土与水泥制品,2021(11):59-63. ZHANG H L,WANG W H,XU Y,et al.Experimental Study on the Axial Compression Performance of Concrete Short Columns Confined by CFRP Braided Tubes[J].China Concrete and Cement Products,2021(11):59-63.

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