节能降碳 _2024_《混凝土与水泥制品》杂志社

头部文案

发布时间：2020-01-06 00:00:00

全国建材科技期刊
全国中文核心期刊
中国科技论文统计源期刊
万方数据-数字化期刊群入网期刊
中国学术期刊（光盘版）全文收录期刊

华东地区优秀科技期刊
江苏省期刊方阵“双效期刊”
中国期刊网全文收录期刊
中国科技期刊数据库全文收录期刊



全部文章

节能降碳

不同加热方式下高温后防辐射混凝土的性能研究

王若祥1，陈振富1，2，*，陶秋旺1，谢利平3

2024年第3期

摘要

引用本文

摘要：以磁铁矿为骨料制备了防辐射混凝土，研究了不同加热方式（微波辐射加热、马弗炉加热）和温度（25~800 ℃）对防辐射混凝土外观形貌、抗压强度、超声波波速和屏蔽性能的影响。结果表明：在相同加热方式下，随着温度的升高，试件的外观形貌劣化程度加重，抗压强度、超声波波速、屏蔽性能均降低；与马弗炉加热相比，微波辐射加热在各个温度区间内对试件造成的损伤均较大。 Abstract: Radiation shielding concrete was prepared by using magnetite as aggregates, and the effects of different heating modes (microwave radiation heating, muffle furnace heating) and temperatures (25~800 ℃) on the apparent morphology, compressive strength, ultrasonic wave velocity, and shielding performance of radiation shielding concrete were studied. The results show that under the same heating mode, as the temperature increases, the deterioration degree of the apparent morphology of the specimen increases, and the compressive strength, ultrasonic wave velocity, and shielding performance of the specimen decrease. Compared with muffle furnace heating, microwave radiation heating causes greater damage to the specimen in various temperature ranges.

王若祥，陈振富，陶秋旺,等.不同加热方式下高温后防辐射混凝土的性能研究[J].混凝土与水泥制品,2024(3):79-83,89. WANG R X,CHEN Z F,TAO Q W,et al.Study on properties of radiation shielding concrete after high temperature under different heating modes[J].China Concrete and Cement Products,2024(3):79-83,89.

粉煤灰基地聚物混凝土的抗氯盐侵蚀性能研究

谭云

2024年第3期

摘要

引用本文

摘要：对比研究了氯盐侵蚀0~360 d内，粉煤灰基地聚物混凝土（以下简称FABGC）与普通混凝土（以下简称OPC）的抗压强度、质量损失率、氯离子含量、氯离子扩散系数、微观结构。结果表明：各侵蚀龄期下，OPC的抗压强度、质量损失率、氯离子含量基本均高于FABGC；随着侵蚀龄期的增加，FABGC和OPC的抗压强度、氯离子扩散系数基本呈下降趋势，质量损失率、氯离子含量呈增大趋势；当侵蚀龄期达到60 d后，OPC的抗压强度损失率、质量损失率和氯离子扩散系数均明显高于FABGC；随着侵蚀深度的增加，FABGC与OPC氯离子含量逐渐降低；与FABGC相比，未受氯盐侵蚀时，OPC的微观结构更致密，但受氯盐侵蚀后，OPC的微观结构劣化速率较快。 Abstract: The compressive strength, mass loss rate, chloride ion content, chloride diffusion coefficient, and microstructure of fly ash based geopolymer concrete (FABGC) and ordinary concrete (OPC) were investigated comparatively in the chlorine salt erosion environment during 0~360 d. The results show that the compressive strength, mass loss rate, and chloride ion content of OPC are basically higher than those of FABGC at each erosion age. With the increase of erosion age, the compressive strength and chloride ion diffusion coefficient of FABGC and OPC basically show a decreasing trend, and the mass loss rate and chloride content show an increasing trend. When the erosion age reaches 60 d, the compressive strength loss rate, mass loss rate, and chloride ion diffusion coefficient of OPC are significantly higher than those of FABGC. With the increase of erosion depth, the chloride ion content of FABGC and OPC gradually decreases. Compared with FABGC, the microstructure of OPC is denser when it is not subjected to chloride salt erosion environment, but the microstructure deterioration rate of OPC is faster when it is subjected to chloride salt erosion environment.

谭云.粉煤灰基地聚物混凝土的抗氯盐侵蚀性能研究[J].混凝土与水泥制品,2024(3):84-89. TAN Y. Study on chloride corrosion resistance of fly ash based geopolymer Concrete[J].China Concrete and Cement Products,2024(3):84-89.

火山渣粒径和DPS掺量对轻骨料混凝土性能的影响

刘宏波1，2，张少云1，张博洋1，李泳1，常璞1，孙婧1，2，*

2024年第3期

摘要

引用本文

摘要：以火山渣作为粗骨料制备了轻骨料混凝土，研究了火山渣粒径（4.75~9.50、4.75~19.00、4.75~26.00 mm）对轻骨料混凝土坍落度、吸水率和抗压强度的影响，优选出了最佳火山渣粒径。在此基础上，研究了渗透结晶型无机防水剂（DPS）的掺量（0、0.6%、0.8%、1.0%）对轻骨料混凝土性能的影响，并分析了其作用机理。结果表明：随着火山渣粒径的增大，轻骨料混凝土的坍落度降低，吸水率增大，抗压强度先增大后减小，最佳火山渣粒径为4.75~19.00 mm；随着DPS掺量的增加，轻骨料混凝土的坍落度和吸水率降低，抗压强度增大；掺入适量DPS可以有效提高混凝土基体的密实度，从而改善混凝土的性能。 Abstract: Lightweight aggregate concrete was prepared by using volcanic slag as coarse aggregates, and the influence of volcanic slag particle size (4.75~9.50、4.75~19.00、4.75~26.00 mm) on the slump, water absorption, and compressive strength of lightweight aggregate concrete was studied, and the optimal volcanic slag particle size was selected. On this basis, the influence of the content of penetrating crystalline inorganic waterproofing agent (DPS) (0, 0.6%, 0.8%, 1.0%) on the performance of lightweight aggregate concrete was studied, and its mechanism of action was analyzed. The results show that as the particle size of volcanic slag increases, the slump of lightweight aggregate concrete decreases, the water absorption rate increases, and the compressive strength first increases and then decreases, and the optimal particle size of volcanic slag is 4.75~19.00 mm. With the increase of DPS content, the slump and the water absorption rate of lightweight aggregate concrete decrease, and the compressive strength increases. Adding an appropriate content of DPS can effectively improve the compactness of the concrete matrix, thereby improving the performance of the concrete.

刘宏波,张少云,张博洋,等.火山渣粒径和DPS掺量对轻骨料混凝土性能的影响[J].混凝土与水泥制品,2024(3):90-92,98. LIU H B,ZHANG S Y,ZHANG B Y,et al.Effect of volcanic slag particle size and DPS content on performance of lightweight aggregate concrete[J].China Concrete and Cement Products,2024(3):90-92,98.

柠檬酸对氯氧镁水泥水化过程及性能的影响

喻俊1，廖国胜1，2，3，陈迎雪1，刘艳玲1，董兴智1，程利力1，廖宜顺1，2，3，*

2024年第3期

摘要

引用本文

摘要：研究了不同掺量（0、0.2%、0.4%、0.6%、0.8%）的柠檬酸对氯氧镁水泥（MOC）凝结时间、抗压强度、电阻率、体积稳定性和耐水性的影响，并通过XRD和SEM分析了其作用机理。结果表明：掺入柠檬酸会延长MOC的凝结时间和水化诱导期，延缓水化进程，降低抗压强度，但能有效改善MOC的体积稳定性和耐水性；掺入柠檬酸会使MOC水化产物5Mg(OH)2·MgCl2·8H2O（相5）的含量增加，晶体形态改变；空白组浸水28 d后，其内部生成了大量片状Mg(OH)2；掺柠檬酸的试件浸水28 d后，其内部疏松多孔的Mg(OH)2较少，大量絮状相5相互搭接，使MOC的内部结构更加致密，耐水性得到提升。 Abstract: The effects of different contents of citric acid (0, 0.2%, 0.4%, 0.6%, 0.8%) on the setting time, compressive strength, electrical resistivity, volume stability, and water resistance of magnesium oxychloride cement(MOC) were studied, and the mechanisms were analyzed by XRD and SEM. The results show that adding citric acid can prolong the setting time and hydration induction period of MOC, delay the hydration process, reduce compressive strength, but effectively improve volume stability and water resistance. The addition of citric acid increases the content of MOC hydration product Mg(OH)2·MgCl2·8H2O (phase 5) and changes its crystal morphology. After being immersed in water for 28 d, a large amount of flaky Mg(OH)2 is generated inside the blank group. After being immersed in water for 28 d, the specimens mixed with citric acid show less loose and porous Mg(OH)2 inside, and a large amount of flocculent phase 5 overlaps with each other, making the internal structure of MOC more dense and improving its water resistance.

喻俊,廖国胜,陈迎雪,等.柠檬酸对氯氧镁水泥水化过程及性能的影响[J].混凝土与水泥制品,2024(3):93-98. YU J,LIAO G S,CHEN Y X,et al.Effect of citric acid on hydration process and performance of magnesium oxychloride cement[J].China Concrete and Cement Products,2024(3):93-98.

搅拌站废浆对砂浆流动度和力学性能的影响

孙浩，于林玉，刘万刚

2024年第3期

摘要

引用本文

摘要：为了实现搅拌站废浆的再利用，研究了不同含固量（3%~15%）废浆等质量取代0~100%的水对砂浆流动度及力学性能的影响。结果表明：废浆中存在的C3S、C2S等矿物成分使其具备在混凝土中应用的可行性；随着废浆掺量的增加，砂浆的流动度基本呈减小趋势；废浆的掺入能在一定程度上使砂浆的微观结构更密实，从而提高砂浆的力学性能，尤其是28 d抗压强度。 Abstract: In order to realize the reuse of waste slurry from mixing plants, the effects of replacing 0~100% water by waste slurry with different solid content (3%~15%) on the fluidity and mechanical properties of mortar were investigated. The results show that the existence of C3S, C2S and other mineral components in the waste slurry makes it feasible to be applied in concrete. With the increase of the replacement rate of waste slurry, the fluidity of mortar basically shows a decreasing trend. The incorporation of waste slurry can make the microstructure of mortar denser to a certain extent, so as to improve the mechanical properties of the mortar, especially the 28 d compressive strength.

孙浩,于林玉,刘万刚.搅拌站废浆对砂浆流动度和力学性能的影响[J].混凝土与水泥制品,2024(3):99-102. SUN H,YU L Y,LIU W G.Effect of waste slurry from mixing plant on fluidity and mechanical properties of mortar[J].China Concrete and Cement Products,2024(3):99-102.

总访问量 468,401 网站统计

官方微信公众号关闭

关于我们 | 联系我们 | 订购杂志 | 回到顶部

苏ICP备10086386号

网站建设：中企动力苏州