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Correction to: Evaluation of the combined deterioration by freeze-thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

机译:校正至:评估结合了BFS,石灰石粉和硫酸钙的砂浆的冻融和碳化引起的综合劣化

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摘要

The durability performance of cementitious material is traditionally based on assessing the effect of a single degradation process. However, this study investigates the coupled deterioration properties of mortar incorporating industrial solid waste-ground granulated blast furnace slag (BFS) and different mineral admixtures, such as calcium sulfate (CS) and limestone powder (LSP). The combined deterioration properties caused by carbonation and frost damage in the mortar sample were experimentally investigated with respect to accelerated carbonation and freeze-thaw tests. Different degrees of deterioration, i.e. after subjected to 12, 30 and 60 freeze-thaw cycles, were induced in the freeze-thaw tests. The experimental investigation of single degradation revealed that the compressive strength, frost resistance and carbonation resistance decrease as the BFS replacement ratio increases by weight from 0 to 45%. The less amount of CH in the BFS cement leads to the carbonation progress more easily. Moreover, to achieve the same strength as ordinary Portland cement, 2 wt% CS and 4 wt% LSP in the BFS mortar are required. However, the data shows that incorporating LSP into the BFS mortar produces a lower frost resistance. The combined damage tests revealed that different deterioration degrees resulting from 12, 30 and 60 freeze-thaw cycles slightly decreased the carbonation resistance, which is related to the decrease in the inkbottle pore volume due to its water retention characteristics. Simultaneously, the pre-carbonation deterioration could effectively decrease the surface mass scaling of the freeze-thaw and the pore structure undergoes densification due to pre-carbonation.
机译:胶结材料的耐久性传统上是基于评估单个降解过程的效果。但是,本研究调查了掺有工业固体​​废料粉碎的高炉矿渣(BFS)和不同矿物掺合料(例如硫酸钙(CS)和石灰石粉(LSP))的砂浆的耦合劣化特性。针对加速碳化和冻融试验,通过实验研究了砂浆样品中由碳化和霜冻破坏引起的综合劣化特性。在冻融试验中引起不同程度的劣化,即在经历12、30和60次冻融循环之后。单一降解的实验研究表明,随着BFS置换率从0增至45%,抗压强度,抗冻性和抗碳化性降低。 BFS水泥中CH含量越少,越容易碳化。而且,为了获得与普通波特兰水泥相同的强度,在BFS砂浆中需要2 wt%的CS和4 wt%的LSP。但是,数据表明,将LSP掺入BFS砂浆中会产生较低的抗冻性。组合损伤测试表明,由12、30和60次冻融循环导致的不同劣化度会稍微降低抗碳化性,这与由于其保水特性而导致的墨水孔体积的减少有关。同时,预碳化的恶化可以有效地降低冻融的表面质量,并且孔结构由于预碳化而发生致密化。

著录项

  • 来源
    《Materials and structures》 |2017年第6期|242.1-242.2|共2页
  • 作者单位

    Henan Polytech Univ, Sch Mat Sci & Engn, Jiaozuo 454000, Peoples R China;

    Nippon Steel & Sumikin Cement Co Ltd, Prod Dev Dept, 64 Nakamachi, Muroran, Hokkaido 0508510, Japan;

    Muroran Inst Technol, Grad Sch Engn, Coll Environm Technol, 27-1 Mizumoto, Muroran, Hokkaido 0508585, Japan;

    Muroran Inst Technol, Grad Sch Engn, Coll Environm Technol, 27-1 Mizumoto, Muroran, Hokkaido 0508585, Japan;

    Muroran Inst Technol, Grad Sch Engn, Coll Environm Technol, 27-1 Mizumoto, Muroran, Hokkaido 0508585, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Blast furnace slag; Freeze-thaw resistance; Carbonation; Combined deterioration; Microstructure; Mass loss;

    机译:高炉矿渣;抗冻融性;碳化;复合变质;微观组织;质量损失;

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