Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultra-high-performance concrete and mix proportion design method thereof
The invention relates to ultra-high-performance concrete and a mix proportion design method thereof. The method comprises the following steps of: firstly, determining ultra-high-performance concrete slurry viscosity intervals A1-A2 with steel fibers not prone to sedimentation and bubbles capable of escaping, and then determining the optimized viscosity intervals A3-A4 of the ultra-high-performanceconcrete slurry according to the distribution situation of the steel fibers and the bubbles; preparing a plurality of groups of ultrahigh-performance concrete slurry with different mineral admixtureblending ratios, carrying out a rheological property test to obtain a curve that the viscosity changes along with the mineral admixture blending ratios, and determining the mineral admixture blendingratios corresponding to optimized viscosity intervals A3-A4 as optimized mineral admixture blending ratio intervals; and implanting the two boundary values of the optimized mineral admixture mixing ratio interval, the particle size distribution of each solid component and the apparent density into the closest packing model, and calculating the volume ratio interval of each solid component. The internal pore structure of ultra-high performance concrete can be optimized, the bubble content is reduced, the compressive strength is improved, the macroscopic performance is optimized, and the methodis simple and high in universality.
本申请涉及一种超高性能混凝土及其配合比设计方法，包括如下步骤：先确定钢纤维不易沉降且气泡能逸出的超高性能混凝土浆体黏度区间A～A，再根据钢纤维和气泡的分布情况确定超高性能混凝土浆体的优化黏度区间A～A；制备多组不同矿物掺合料掺比的超高性能混凝土浆体，并进行流变性能试验，得到黏度随矿物掺合料掺比变化的曲线，确定优化黏度区间A～A对应的矿物掺合料掺比为优化矿物掺合料掺比区间；将优化矿物掺合料掺比区间的两边界值、各固体组分的粒径分布以及表观密度植入最密堆积模型，计算出各固体组分的体积比区间。本申请可优化超高性能混凝土的内部孔结构，降低气泡含量，提高抗压强度，优化其宏观性能，且该方法简单、通用性强。
Ultra-high-performance concrete and mix proportion design method thereof
The invention relates to ultra-high-performance concrete and a mix proportion design method thereof. The method comprises the following steps of: firstly, determining ultra-high-performance concrete slurry viscosity intervals A1-A2 with steel fibers not prone to sedimentation and bubbles capable of escaping, and then determining the optimized viscosity intervals A3-A4 of the ultra-high-performanceconcrete slurry according to the distribution situation of the steel fibers and the bubbles; preparing a plurality of groups of ultrahigh-performance concrete slurry with different mineral admixtureblending ratios, carrying out a rheological property test to obtain a curve that the viscosity changes along with the mineral admixture blending ratios, and determining the mineral admixture blendingratios corresponding to optimized viscosity intervals A3-A4 as optimized mineral admixture blending ratio intervals; and implanting the two boundary values of the optimized mineral admixture mixing ratio interval, the particle size distribution of each solid component and the apparent density into the closest packing model, and calculating the volume ratio interval of each solid component. The internal pore structure of ultra-high performance concrete can be optimized, the bubble content is reduced, the compressive strength is improved, the macroscopic performance is optimized, and the methodis simple and high in universality.
本申请涉及一种超高性能混凝土及其配合比设计方法，包括如下步骤：先确定钢纤维不易沉降且气泡能逸出的超高性能混凝土浆体黏度区间A～A，再根据钢纤维和气泡的分布情况确定超高性能混凝土浆体的优化黏度区间A～A；制备多组不同矿物掺合料掺比的超高性能混凝土浆体，并进行流变性能试验，得到黏度随矿物掺合料掺比变化的曲线，确定优化黏度区间A～A对应的矿物掺合料掺比为优化矿物掺合料掺比区间；将优化矿物掺合料掺比区间的两边界值、各固体组分的粒径分布以及表观密度植入最密堆积模型，计算出各固体组分的体积比区间。本申请可优化超高性能混凝土的内部孔结构，降低气泡含量，提高抗压强度，优化其宏观性能，且该方法简单、通用性强。
Ultra-high-performance concrete and mix proportion design method thereof
一种超高性能混凝土及其配合比设计方法
CHEN QIN (Autor:in) / QIN CHEN (Autor:in) / HU YING (Autor:in) / HUANG ZHANWEI (Autor:in) / XU HUAN (Autor:in) / ZHANG YU (Autor:in) / LUO YANMING (Autor:in) / WANG LIN (Autor:in) / SHAN YAOJIA (Autor:in) / WANG SHENG (Autor:in)
18.08.2020
Patent
Elektronische Ressource
Chinesisch
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