Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of sulfate-erosion-resistant concrete
The invention provides a preparation method of sulfate corrosion resistant concrete. The method comprises the following steps: doping 8-12% of PBL powder into freshly mixed ordinary Portland cement concrete; wherein the PBL powder is prepared from ardealite, magnesite and limestone according to the dry basis mass ratio of 4: 2: 1 by adopting a grinding process. As long as 8-12% of PBL powder is doped into ordinary Portland cement concrete greater than or equal to C30, sulfate erosion reaction does not occur even if an erosion medium sulfate permeates into service concrete, so that even in a strong-corrosion erosion environment, the corrosion resistance of the concrete is greatly improved, and the service life of the concrete is prolonged. And engineering measures such as waterproof layer, environmental water erosion reduction, drainage, filling replacement, underground water level reduction and protection layer arrangement are not required to be adopted according to the specification of DL/T5801-2019 Technical Regulations for Application of Sulfate Erosion Resistant Concrete.
本发明提供一种抗硫酸盐侵蚀混凝土的制备方法，该方法包括：在新拌普通硅酸盐水泥混凝土中掺入8%~12%的PBL粉末；其中，所述PBL粉末由磷石膏、菱镁矿和石灰石按4:2:1的干基质量比，采取粉磨工艺制备而成。只要在≥C30普通硅酸盐水泥混凝土中掺入8%~12%的PBL粉末，即使侵蚀介质硫酸盐渗入服役混凝土中以后，也不会发生硫酸盐侵蚀反应，因此即使在强腐蚀侵蚀环境中，也不需要按DL/T5801—2019《抗硫酸盐侵蚀混凝土应用技术规程》的规定采用防水层、降低环境水侵蚀性、排水、换填土、降低地下水位及设置防护层等工程措施。
Preparation method of sulfate-erosion-resistant concrete
The invention provides a preparation method of sulfate corrosion resistant concrete. The method comprises the following steps: doping 8-12% of PBL powder into freshly mixed ordinary Portland cement concrete; wherein the PBL powder is prepared from ardealite, magnesite and limestone according to the dry basis mass ratio of 4: 2: 1 by adopting a grinding process. As long as 8-12% of PBL powder is doped into ordinary Portland cement concrete greater than or equal to C30, sulfate erosion reaction does not occur even if an erosion medium sulfate permeates into service concrete, so that even in a strong-corrosion erosion environment, the corrosion resistance of the concrete is greatly improved, and the service life of the concrete is prolonged. And engineering measures such as waterproof layer, environmental water erosion reduction, drainage, filling replacement, underground water level reduction and protection layer arrangement are not required to be adopted according to the specification of DL/T5801-2019 Technical Regulations for Application of Sulfate Erosion Resistant Concrete.
本发明提供一种抗硫酸盐侵蚀混凝土的制备方法，该方法包括：在新拌普通硅酸盐水泥混凝土中掺入8%~12%的PBL粉末；其中，所述PBL粉末由磷石膏、菱镁矿和石灰石按4:2:1的干基质量比，采取粉磨工艺制备而成。只要在≥C30普通硅酸盐水泥混凝土中掺入8%~12%的PBL粉末，即使侵蚀介质硫酸盐渗入服役混凝土中以后，也不会发生硫酸盐侵蚀反应，因此即使在强腐蚀侵蚀环境中，也不需要按DL/T5801—2019《抗硫酸盐侵蚀混凝土应用技术规程》的规定采用防水层、降低环境水侵蚀性、排水、换填土、降低地下水位及设置防护层等工程措施。
Preparation method of sulfate-erosion-resistant concrete
一种抗硫酸盐侵蚀混凝土的制备方法
LUO JING (Autor:in) / YU ZIHAN (Autor:in) / ZHANG SHITING (Autor:in) / ZHANG BING (Autor:in) / TANG XIAOCHUN (Autor:in)
10.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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