Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Calcium sulfate whisker hybrid basalt fiber reinforced concrete and preparation method thereof
The invention discloses calcium sulfate whisker hybrid basalt fiber reinforced concrete and a preparation method thereof, the calcium sulfate whisker hybrid basalt fiber reinforced concrete comprises calcium sulfate whiskers, short-cut basalt fiber bundles and short-cut basalt fibers, and the three scales of fibers have good compatibility with the concrete; the calcium sulfate whiskers serve as sub-nano-scale fibers, the size effect, the physical filling effect and the fiber characteristics of the calcium sulfate whiskers are fully exerted, the calcium sulfate whiskers can participate in a cement hydration reaction to generate ettringite, the pore structure of the concrete is optimized, and the chloride ion permeability resistance of the concrete is improved. In the crack development stage of the concrete, the crystal whiskers, the fibers and the fiber bundles inhibit crack development from the microscopic scale, the microcosmic scale and the macrocosmic scale respectively, so that the performance of the concrete is enhanced. The three fibers complement each other, and the concrete is reinforced by exerting a forward mixing effect at different stress stages; the compressive strength is improved by more than 9%, the splitting tensile strength is improved by more than 40%, the breaking strength is improved by more than 25%, the chloride ion permeability coefficient is reduced by more than 9%, and the freezing resistance is improved by more than 40%.
本发明公开了一种硫酸钙晶须混杂玄武岩纤维增强混凝土及其制备方法，包括硫酸钙晶须、短切玄武岩纤维束和短切玄武岩纤维，三种尺度的纤维均与混凝土有很好的相容性；硫酸钙晶须作为亚纳米级纤维，充分发挥其尺寸效应、物理填充效应及纤维特性，而且硫酸钙晶须可参与水泥水化反应生成钙矾石，优化混凝土孔隙结构，提高混凝土抗氯离子渗透性。在混凝土的裂缝发展阶段，晶须、纤维和纤维束分别从微观、细观和宏观尺度抑制裂缝的发展，以此增强混凝土的性能。三种纤维取长补短，在不同受力阶段发挥正向混掺效应来增强混凝土；抗压强度提高9%以上，劈裂抗拉强度提高40%以上，抗折强度提高25%以上，氯离子渗透系数降低9%以上，抗冻性提高40%以上。
Calcium sulfate whisker hybrid basalt fiber reinforced concrete and preparation method thereof
The invention discloses calcium sulfate whisker hybrid basalt fiber reinforced concrete and a preparation method thereof, the calcium sulfate whisker hybrid basalt fiber reinforced concrete comprises calcium sulfate whiskers, short-cut basalt fiber bundles and short-cut basalt fibers, and the three scales of fibers have good compatibility with the concrete; the calcium sulfate whiskers serve as sub-nano-scale fibers, the size effect, the physical filling effect and the fiber characteristics of the calcium sulfate whiskers are fully exerted, the calcium sulfate whiskers can participate in a cement hydration reaction to generate ettringite, the pore structure of the concrete is optimized, and the chloride ion permeability resistance of the concrete is improved. In the crack development stage of the concrete, the crystal whiskers, the fibers and the fiber bundles inhibit crack development from the microscopic scale, the microcosmic scale and the macrocosmic scale respectively, so that the performance of the concrete is enhanced. The three fibers complement each other, and the concrete is reinforced by exerting a forward mixing effect at different stress stages; the compressive strength is improved by more than 9%, the splitting tensile strength is improved by more than 40%, the breaking strength is improved by more than 25%, the chloride ion permeability coefficient is reduced by more than 9%, and the freezing resistance is improved by more than 40%.
本发明公开了一种硫酸钙晶须混杂玄武岩纤维增强混凝土及其制备方法，包括硫酸钙晶须、短切玄武岩纤维束和短切玄武岩纤维，三种尺度的纤维均与混凝土有很好的相容性；硫酸钙晶须作为亚纳米级纤维，充分发挥其尺寸效应、物理填充效应及纤维特性，而且硫酸钙晶须可参与水泥水化反应生成钙矾石，优化混凝土孔隙结构，提高混凝土抗氯离子渗透性。在混凝土的裂缝发展阶段，晶须、纤维和纤维束分别从微观、细观和宏观尺度抑制裂缝的发展，以此增强混凝土的性能。三种纤维取长补短，在不同受力阶段发挥正向混掺效应来增强混凝土；抗压强度提高9%以上，劈裂抗拉强度提高40%以上，抗折强度提高25%以上，氯离子渗透系数降低9%以上，抗冻性提高40%以上。
Calcium sulfate whisker hybrid basalt fiber reinforced concrete and preparation method thereof
一种硫酸钙晶须混杂玄武岩纤维增强混凝土及其制备方法
LI CHENCHEN (Autor:in) / ZHANG PU (Autor:in) / XING XIAONAN (Autor:in) / MA JIAO (Autor:in) / TANG MINGHU (Autor:in) / CHEN ANLEI (Autor:in) / WEI FEIFAN (Autor:in)
12.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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