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A platform for research: civil engineering, architecture and urbanism
Preparation method of polycarboxylic acid admixture for machine-made sand high-strength concrete
The invention discloses a preparation method of a polycarboxylic acid admixture for machine-made sand high-strength concrete, and the admixture comprises the following components in percentage by weight: 16.0-18.0% of polycarboxylic acid high-performance water-reducing mother liquor, 30.0-32.0% of six-carbon comprehensive mother liquor, 38.0-40.0% of polycarboxylic acid high-performance slump-retaining mother liquor, 4.0-6.0% of sodium gluconate, 4.0-10.0% of white sugar, 6-7 parts per ten thousand of 740 defoaming agent and the balance of water. The admixture is applied to super high-rise pumping machine-made sand ultrahigh-strength concrete, and the problems that the machine-made sand ultrahigh-strength concrete is prone to pump segregation, and the viscosity is too large, the fluidity is small, and the pumpability is poor due to the low water-binder ratio and the large mixing amount of a binder material can be effectively solved; the admixture can meet the adaptability problem of high-strength concrete raw materials, meanwhile, by using the admixture, the 4h slump loss of a mixture can be zero, and the requirement of pumping construction of super high-rise buildings can be met.
本发明公开了一种机制砂高强混凝土聚羧酸外加剂的制备方法，该外加剂各组分的重量百分比为：聚羧酸高性能减水母液16.0‑18.0%，六碳综合母液30.0‑32.0%，聚羧酸高性能保坍母液38.0‑40.0%，葡钠4.0‑6.0%，白糖4.0‑10.0%，740消泡万分之6‑万分之7，将本发明应用于超高层泵送的机制砂超高强混凝土，可有效改善机制砂超高泵送高强混凝土易泵离析以及低水胶比、大掺量胶材带来的粘度过大、流动度小、可泵送性差等问题，同时该外加剂的适应性强，能够满足高强混凝土原材料的适应性问题，同时使用该外加剂能够使拌合物的4h坍落度损失为零，能够满足超高层建筑泵送施工的要求。
Preparation method of polycarboxylic acid admixture for machine-made sand high-strength concrete
The invention discloses a preparation method of a polycarboxylic acid admixture for machine-made sand high-strength concrete, and the admixture comprises the following components in percentage by weight: 16.0-18.0% of polycarboxylic acid high-performance water-reducing mother liquor, 30.0-32.0% of six-carbon comprehensive mother liquor, 38.0-40.0% of polycarboxylic acid high-performance slump-retaining mother liquor, 4.0-6.0% of sodium gluconate, 4.0-10.0% of white sugar, 6-7 parts per ten thousand of 740 defoaming agent and the balance of water. The admixture is applied to super high-rise pumping machine-made sand ultrahigh-strength concrete, and the problems that the machine-made sand ultrahigh-strength concrete is prone to pump segregation, and the viscosity is too large, the fluidity is small, and the pumpability is poor due to the low water-binder ratio and the large mixing amount of a binder material can be effectively solved; the admixture can meet the adaptability problem of high-strength concrete raw materials, meanwhile, by using the admixture, the 4h slump loss of a mixture can be zero, and the requirement of pumping construction of super high-rise buildings can be met.
本发明公开了一种机制砂高强混凝土聚羧酸外加剂的制备方法，该外加剂各组分的重量百分比为：聚羧酸高性能减水母液16.0‑18.0%，六碳综合母液30.0‑32.0%，聚羧酸高性能保坍母液38.0‑40.0%，葡钠4.0‑6.0%，白糖4.0‑10.0%，740消泡万分之6‑万分之7，将本发明应用于超高层泵送的机制砂超高强混凝土，可有效改善机制砂超高泵送高强混凝土易泵离析以及低水胶比、大掺量胶材带来的粘度过大、流动度小、可泵送性差等问题，同时该外加剂的适应性强，能够满足高强混凝土原材料的适应性问题，同时使用该外加剂能够使拌合物的4h坍落度损失为零，能够满足超高层建筑泵送施工的要求。
Preparation method of polycarboxylic acid admixture for machine-made sand high-strength concrete
一种机制砂高强混凝土聚羧酸外加剂的制备方法
YE HONGHONG (author) / MA ZHENGLIN (author) / LI GUANYONG (author) / FAN XINGBO (author) / CHEN ZHIXUAN (author) / WANG WEI (author) / LUO SHUNJIANG (author) / WEI JIAXU (author) / HU JUN (author) / LEE BAEK-WOO (author)
2022-07-15
Patent
Electronic Resource
Chinese
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