Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Novel modification process of concrete admixture
The invention relates to a novel modification process of a concrete admixture. The concrete admixture is prepared from a modified polycarboxylate superplasticizer, polypropylene fibers and silica fume. A concrete product prepared from the concrete admixture has good water reducing effect, dispersibility, fluidity, compressive strength and breaking strength, which indicates that the modified admixture can more effectively reduce the mixing water amount required by concrete, and can better disperse cement particles; the stability and the flowability of cement paste are improved, and the slump and the expansion degree of the product have small time-dependent variation, which means that the working performance of the concrete is kept better; according to the modified polycarboxylic acid water reducer prepared by introducing the unsaturated phosphoric acid functional monomer, cement particles can be better dispersed, and the situation that the effect of the water reducer is affected due to the fact that the mud content of gravel aggregate is increased is avoided, so that the uniformity of concrete is kept, the fluidity and stability of cement paste are improved, and the service life of the water reducer is prolonged. And the concrete is easier to pour and form.
一种混凝土外加剂的新型改性工艺，其通过改性聚羧酸减水剂、聚丙烯纤维、微硅粉为原料制备而成；本发明本发明通过混凝土外加剂制备得到的混凝土产品的减水效果、分散性、流动性和抗压强度和抗折强度均表现良好，表明改性外加剂能更有效地减少混凝土所需的拌合水量，改性外加剂能更好地分散水泥颗粒，提高水泥浆体的稳定性和流动性，且产品的坍落度和扩展度经时变化量较小，意味着混凝土的工作性能保持得更好；本发明通过不饱和磷酸功能单体的引入制备得到的改性聚羧酸减水剂，能更好地分散水泥颗粒，避免因砂石骨料含泥量增加而影响减水剂的效果，从而保持混凝土的均匀性，有助于提高水泥浆体的流动性和稳定性，使混凝土更容易浇筑和成型。
Novel modification process of concrete admixture
The invention relates to a novel modification process of a concrete admixture. The concrete admixture is prepared from a modified polycarboxylate superplasticizer, polypropylene fibers and silica fume. A concrete product prepared from the concrete admixture has good water reducing effect, dispersibility, fluidity, compressive strength and breaking strength, which indicates that the modified admixture can more effectively reduce the mixing water amount required by concrete, and can better disperse cement particles; the stability and the flowability of cement paste are improved, and the slump and the expansion degree of the product have small time-dependent variation, which means that the working performance of the concrete is kept better; according to the modified polycarboxylic acid water reducer prepared by introducing the unsaturated phosphoric acid functional monomer, cement particles can be better dispersed, and the situation that the effect of the water reducer is affected due to the fact that the mud content of gravel aggregate is increased is avoided, so that the uniformity of concrete is kept, the fluidity and stability of cement paste are improved, and the service life of the water reducer is prolonged. And the concrete is easier to pour and form.
一种混凝土外加剂的新型改性工艺，其通过改性聚羧酸减水剂、聚丙烯纤维、微硅粉为原料制备而成；本发明本发明通过混凝土外加剂制备得到的混凝土产品的减水效果、分散性、流动性和抗压强度和抗折强度均表现良好，表明改性外加剂能更有效地减少混凝土所需的拌合水量，改性外加剂能更好地分散水泥颗粒，提高水泥浆体的稳定性和流动性，且产品的坍落度和扩展度经时变化量较小，意味着混凝土的工作性能保持得更好；本发明通过不饱和磷酸功能单体的引入制备得到的改性聚羧酸减水剂，能更好地分散水泥颗粒，避免因砂石骨料含泥量增加而影响减水剂的效果，从而保持混凝土的均匀性，有助于提高水泥浆体的流动性和稳定性，使混凝土更容易浇筑和成型。
Novel modification process of concrete admixture
一种混凝土外加剂的新型改性工艺
PI ZHONGCHENG (Autor:in) / WANG LYUQIU (Autor:in) / ZHANG HAOYU (Autor:in) / HE YU (Autor:in)
29.10.2024
Patent
Elektronische Ressource
Chinesisch
Concrete admixture material surface modification method
| Europäisches Patentamt | 2024