Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for accurately controlling porosity of concrete and application thereof
The invention belongs to the technical field of building materials. The invention relates to the technical field of concrete preparation, in particular to a method for accurately controlling concreteporosity and an application of the method in pumice concrete preparation in cold regions. The method specifically comprises the steps that rubber particles approximately serve as pores in concrete, anatural pumice concrete strength empirical formula based on target porosity is established, the target porosity can be equivalent to the total porosity in concrete, the volume of the rubber particlesrequired to be doped is calculated according to the required target porosity, the mass loss rate and the dynamic elastic modulus of the concrete are analyzed to obtain that the rubber particles slow down the freeze-thaw damage of the natural pumice concrete. CT image scanning analysis of the concrete shows that the pumice concrete prepared by the method is more compact in an internal structure, and the durability of the concrete is also improved on the premise of ensuring the strength. The method is suitable for northeast, northwest and other severe cold areas.
本发明属于建筑材料技术领域，具体涉及一种准确控制混凝土孔隙率的方法及其在寒冷地区浮石混凝土制备中的应用，具体为：将橡胶颗粒近似作为混凝土中孔隙，建立基于目标孔隙率的天然浮石混凝土强度经验公式，以目标孔隙率可以等效混凝土中的总孔隙率。根据所需的目标孔隙率，计算出需要掺杂橡胶颗粒的体积。并且从混凝土的质量损失率和动弹性模量分析得出橡胶颗粒减缓天然浮石混凝土冻融损伤。从混凝土CT图像扫描分析得出用该方法制备的浮石混凝土内部结构更为密实，在保证强度的前提下，也提高了混凝土的耐久性。这种方法适用于东北、西北等严寒地区。
Method for accurately controlling porosity of concrete and application thereof
The invention belongs to the technical field of building materials. The invention relates to the technical field of concrete preparation, in particular to a method for accurately controlling concreteporosity and an application of the method in pumice concrete preparation in cold regions. The method specifically comprises the steps that rubber particles approximately serve as pores in concrete, anatural pumice concrete strength empirical formula based on target porosity is established, the target porosity can be equivalent to the total porosity in concrete, the volume of the rubber particlesrequired to be doped is calculated according to the required target porosity, the mass loss rate and the dynamic elastic modulus of the concrete are analyzed to obtain that the rubber particles slow down the freeze-thaw damage of the natural pumice concrete. CT image scanning analysis of the concrete shows that the pumice concrete prepared by the method is more compact in an internal structure, and the durability of the concrete is also improved on the premise of ensuring the strength. The method is suitable for northeast, northwest and other severe cold areas.
本发明属于建筑材料技术领域，具体涉及一种准确控制混凝土孔隙率的方法及其在寒冷地区浮石混凝土制备中的应用，具体为：将橡胶颗粒近似作为混凝土中孔隙，建立基于目标孔隙率的天然浮石混凝土强度经验公式，以目标孔隙率可以等效混凝土中的总孔隙率。根据所需的目标孔隙率，计算出需要掺杂橡胶颗粒的体积。并且从混凝土的质量损失率和动弹性模量分析得出橡胶颗粒减缓天然浮石混凝土冻融损伤。从混凝土CT图像扫描分析得出用该方法制备的浮石混凝土内部结构更为密实，在保证强度的前提下，也提高了混凝土的耐久性。这种方法适用于东北、西北等严寒地区。
Method for accurately controlling porosity of concrete and application thereof
一种准确控制混凝土孔隙率的方法及其应用
BAI YAN (Autor:in) / YIN XINSHENG (Autor:in) / ZHAO CHUANHAI (Autor:in)
28.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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