Influence of Metakaolin on Mechanical Properties of High-performance Concrete

机译：metakaolin对高性能混凝土力学性能的影响

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Kaolin is a material with broad sources and a low price. Metakaolin is made from kaolin which is calcined, finely ground at an optimum temperature of 750°C being kept constant for 4 hours. High strength and performance concrete can be mixed from metakaolin as a substitute for equal mass cement. The influences of 5%, 10% and 15% metakaolin in substitution of equal cement masses were studied on the mechanical properties of high-performance concrete. The test results showed that the addition of metakaolin improved the cubic compressive strength, splitting tensile strength and flexural strength of HPC, among which the improvement in compressive strength was the most siginificant, and simultaneously, there was also an improvement in concrete toughness in a certain degree. The optimum content of metakaolin is 10% resulting in an increase of the cubic compressive strength of concrete by 8.3% correspondingly.

机译：高岭土是一种具有广泛来源和低价格的材料。使得易果菌素由高岭土制成，该高岭土煅烧，在最佳温度为750℃的最佳温度下保持恒定4小时。高强度和性能混凝土可以从甲状腺素混合作为相等质量水泥的替代品。研究了在高性能混凝土的机械性能下研究了5％，10％和15％的偏达林蛋白在等水泥质量中的影响。测试结果表明，甲状腺素的添加改善了立方抗压强度，分裂拉伸强度和HPC的抗弯强度，其中抗压强度的改善是最简单的，同时，在某种程度上还存在改善混凝土韧性的改善程度。 Metakaolin的最佳含量为10％，导致混凝土的立方抗压强度增加8.3％，相应地增加了8.3％。

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《International Conference on Structures and Building Materials》|2011年||共6页
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Baomin Wang; Wei Liu;
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中图分类 TB3-532;
关键词
Metakaolin; Strength; Toughness; Concrete;

机译：metakaolin;强度;韧性;混凝土;

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2. INFLUENCE OF NANO SILICA AND METAKAOLIN ADMIXED CONCRETES OF DIFFERENT GRADES ON MECHANICAL PROPERTIES [J] . J. PRABAKAR The Indian concrete journal . 2019,第6期

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3. Influence of the calcination temperature of kaolin on the mechanical properties of mortars and concretes containing metakaolin [J] . R. MEJIA DE GUTIERREZ, J. TORRES, C. VIZCAYNO, Clay Minerals . 2008,第2期

机译：高岭土的煅烧温度对含偏高岭土的砂浆和混凝土力学性能的影响
4. Influence of Metakaolin on Mechanical Properties of High-performance Concrete [C] . Baomin Wang, Wei Liu International Conference on Structures and Building Materials . 2011

机译：metakaolin对高性能混凝土力学性能的影响
5. Compatibility between cements and superplasticizers in high-performance concrete: Influence of alkali content in cement and of the molecular weight of PNS on the properties of cement pastes and concretes. [D] . Kim, Byung-Gi. 2000

机译：高性能混凝土中水泥与高效减水剂的相容性：水泥中碱含量和PNS分子量对水泥浆和混凝土性能的影响。
6. Effect of Size of Coarse Aggregate on Mechanical Properties of Metakaolin-Based Geopolymer Concrete and Ordinary Concrete [O] . Hamed Fazli, Dongming Yan, Yajun Zhang, 2021

机译：粗骨料尺寸对甲酚基地质晶体混凝土和普通混凝土力学性能的影响
7. Mechanical properties of various concrete after high temperature exposure Mechanical property of various types of concrete after high temperature exposure is investigated. Considering compressive strength requirement for a vertical element in high rise building, concrete specimens with various design strengths of 35, 80, 100, and 150 MPa were tested. Particularly, the influence of incorporated steel fiber on fire resistance is of interest in this study. Experimental results show that the fire resistance depends on the design strength and steel fiber content. Normal strength concrete (NSC) of a design strength of 35 MPa or high performance concrete (HPC) of 80-100 MPa does not spall when exposed to 100-400 °C of temperature. However, an explosive spalling occurs at 300 °C when the HPCs contain 1 vol. of steel fiber. Ultra-high performance concrete (UHPC) of a design strength of 150 MPa and 1.5 vol. of steel fiber also shows dramatic spalling at 300 °C. The experimental results found in this study can contribute to a better understanding of the behaviors of HPC and UHPC under fire and the role of steel fiber on the fire resistance. [O] . 2017

机译：研究了高温暴露后各种混凝土高温曝光机械性能各种混凝土的机械性能。考虑到高层建筑中垂直元件的抗压强度要求，测试了35,80,100和150MPa各种设计强度的混凝土试样。特别是，在这项研究中，掺入钢纤维对耐火性的影响。实验结果表明，耐火性取决于设计强度和钢纤维含量。在暴露于100-400°C的温度时，80-100MPa的设计强度为35MPa或高性能混凝土（HPC）的正常强度混凝土（NSC）不会击落。然而，当HPC含有1体积的钢纤维的百分比时，爆炸性剥落发生在300℃。超高性能混凝土（UHPC）的设计强度为150 MPa和1.5 Vol。钢纤维的百分比也显示出300℃的剧烈剥落。本研究中发现的实验结果可以有助于更好地了解在火灾中的HPC和UHPC的行为以及钢纤维对耐火性的作用。

Influence of Metakaolin on Mechanical Properties of High-performance Concrete

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