苏州混凝土水泥制品研究院有限公司

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

混凝土研究

碳化与氯盐共同作用下混凝土劣化的研究综述
碳化与氯盐共同作用下混凝土劣化的研究综述
  • 肖薇薇1,张纪刚1,2,张君博3,王鹏刚1,2,金祖权1,2,刘锦昆4
2019年第12期
摘要
引用本文
摘 要:碳化作用与高浓度氯离子侵蚀双重作用下的混凝土结构更容易发生耐久性问题。通过分析碳化作用与氯离子侵蚀对混凝土的破坏机理,根据国内外学者对碳化与氯离子侵蚀共同作用下的相关研究,综述了碳化与氯离子侵蚀共同作用下的相互影响及原因,并指出了未来试验研究方向和建议。 Abstract: Based on the analysis of the damage mechanism of carbonation and chloride ion erosion on concrete, the research summarizes the interaction between carbonation and chloride ion erosion and the reasons, and points out the research directions and suggestions in the future.
肖薇薇,张纪刚,张君博,等.碳化与氯盐共同作用下混凝土劣化的研究综述[J].混凝土与水泥制品,2019(12):24-28. XIAO W W,ZHANG J G,ZHANG J B,et al.Summary of the Research on Concrete Degradation under Combined Action of Carbonation and Chloride[J].China Concrete and Cement Products,2019(12):24-28.
冲击回波法评价混凝土质量研究综述
冲击回波法评价混凝土质量研究综述
  • 赵 祺1,桑 源1,高金麟1,杨英姿1,隋良志2,朱卫中1,3
2019年第12期
摘要
引用本文
摘 要:回顾了冲击回波法在评价混凝土质量的研究现状和主要应用,介绍了冲击回波法的基本原理,分析了该方法在评价混凝土强度、检测构件尺寸、缺陷以及评价混凝土耐久性方面的原理及应用,总结了该方法评价混凝土质量的优势和不足,为今后该技术广泛的工程应用提出了进一步的研究方向。 Abstract: This paper reviews the current situation and main application of impact-echo method in evaluating the quality of concrete. Firstly, the basic principle of impact-echo method is introduced. And then principles and applications are analyzed in evaluating concrete strength, detecting structure size and defects, as well as evaluating concrete durability. Meanwhile, the advantages and disadvantages of this method to assess concrete quality are summarized. Finally, further research directions are pointed out for the wide range of engineering applications of this novel technology in the future.
低收缩高黏结黑色高性能混凝土的性能试验研究
低收缩高黏结黑色高性能混凝土的性能试验研究
  • 夏中升1,2,沙建芳1,2,刘建忠1,2,郭 飞1,2,徐海源1,2
2019年第12期
摘要
引用本文
摘 要:研究了着色剂、外加剂掺量、配合比参数等对混凝土力学性能、水化产物形成、收缩变形性能、耐磨损能力的影响规律,再通过对既有混凝土界面进行不同的预处理方式,研究了界面粗糙度、干燥状态等对新旧混凝土界面黏结性能的影响。结果表明:高掺量铁黑降低混凝土力学性能,碳黑与铁黑复配有助于提升力学性能;着色剂粒子的加入有助于氢氧化钙的结晶形成,但对于钙矾石影响较小;混凝土的耐磨损性能与水胶比、含气量等试验参数相关,降低浆体含气量、选取合适的水胶比来获得较高的基体强度,可提升混凝土的耐磨损性能。采用胶材水化温升抑制和收缩补偿复合技术,可实现混凝土分阶段全过程收缩变形调控。较高的界面混凝土强度等级、较大的表面粗糙度以及表面预湿处理,有助于提高新旧混凝土界面黏结性能。 Abstract: The influence mechanism of colorants, admixtures and mix parameters on the surface color and workability of concrete, as well as its influence on the mechanical properties, shrinkage and deformation properties and wear resistance of concrete were studied. In addition, the influence of interface roughness and drying state on the bonding properties of new and old concrete interface was studied by different pretreatment methods of existing concrete interface. The results show that high content of iron black reduces the mechanical properties of concrete, and the combination of carbon black and iron black helps to improve the mechanical properties. The addition of colorant particles helps to form calcium hydroxide crystals, but has little effect on ettringite. The abrasion resistance of concrete is related to the test parameters such as water-binder ratio and air content. Reducing the air content of slurry and choosing appropriate water-binder ratio to obtain higher matrix strength can improve the abrasion resistance of concrete. By using hydration temperature rise inhibitor and high performance expansion agent, shrinkage suppression compensation can be realized in the whole stage. Higher strength grade of interfacial concrete, greater surface roughness and surface pre-wetting treatment are helpful to improve the interfacial bonding performance of new and old concrete.
夏中升,沙建芳,刘建忠,等.低收缩高黏结黑色高性能混凝土的性能试验研究[J].混凝土与水泥制品,2019(12):12-17. XIA Z S,SHA J F,LIU J Z,et al.Experimental Study on Performance of Low Shrinkage and High Bond Black High Performance Concrete[J].China Concrete and Cement Products,2019(12):12-17.
掺镍铁渣-矿渣复合微粉混凝土配合比设计
掺镍铁渣-矿渣复合微粉混凝土配合比设计
  • 祁 皑,刘旭宏,杨绵越,李 征
2019年第12期
摘要
引用本文
摘 要:以配制强度等级为C30、C35,坍落度达100~140 mm的掺镍铁渣-矿渣复合微粉混凝土(镍-矿混凝土)为例,进行了镍-矿混凝土的配合比设计。首先,测定了镍铁渣-矿渣复合微粉掺量为10%~50%的复合水泥胶砂的28d抗压强度,定义了不同复合微粉掺量下的复合水泥强度折减系数。然后,以普通混凝土配合比设计方法中的保罗米公式为基准,采用复合水泥强度折减系数对其进行修正,初步计算了复合微粉掺量为10%~50%的镍-矿混凝土配合比。最后,经过试配和调整,配制出了满足强度和坍落度要求的C30、C35镍-矿混凝土,从而确定了最终配合比。试验结果表明:对于镍-矿混凝土,该配合比设计方法是可行的。 Abstract: Simply replacing cement with ferronickel slag powder of the equal mass is often adverse to maintaining the concrete strength. Therefore, mix design of concrete containing a compound admixture of ferronickel slag-slag micro (F-S) powder (referred as F-S concrete hereafter) was investigated. The target concrete strength grade was C30 and C35, and the specified slump was 100~140 mm. This mix design consisted of the following three steps. Firstly, according to the tested 28 d compressive strength of the composite cement mortar with F-S powder content ranging from 10% to 50%, the strength reduction factor of composite cement mortar with different F-S powder content was defined. Secondly, the preliminary mix proportions of F-S concrete were calculated by the modified Bolomy’s formula. Thirdly, after several rounds of trial and adjustment, the final mix proportions of the target C30 and C35 F-S concrete were determined. Results from the experimental tests confirm the applicability of the proposed method to design the mix proportions of F-S concrete.
祁皑,刘旭宏,杨绵越,等.掺镍铁渣-矿渣复合微粉混凝土配合比设计[J].混凝土与水泥制品,2019(12):7-11. QI A,LIU X H,YANG M Y,et al.Mix Proportion Design of Concrete Containing Compound Admixture of Ferronickel Slag-slag Micro Powder[J].China Concrete and Cement Products,2019(12):7-11.
上一页
1

关注《混凝土与水泥制品》

总访问量 468,401   网站统计

官方微信公众号关闭
苏州混凝土水泥制品研究院有限公司

关于我们    |    联系我们    |    订购杂志    |    回到顶部

版权所有:中国混凝土与水泥制品网  苏ICP备10086386号   网站建设:中企动力 苏州

版权所有:中国混凝土与水泥制品网

苏ICP备10086386号

网站建设:中企动力 苏州