A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Micron-sized mineral admixture for concrete
The invention discloses a micron-sized mineral admixture for concrete. The concrete admixture is prepared from fly ash, silica fume, granulated blast furnace slag powder, limestone powder, hydroxypropyl methyl cellulose, MgO expanding agent, polycarboxylate superplasticizer, citric acid, boric acid, sodium gluconate, lithium sodium persulfate, sodium tartrate, nano calcium carbonate dioxide, nanosilicon dioxide, calcium formate, calcium acetate and cellulose ether. The concrete strength can be improved, and the concrete workability is improved; meanwhile, the use amount of cement in per cubicmeter of concrete can be reduced, and hydration heat in the concrete is reduced; the use amount of free water in the concrete is reduced, the risks of shrinkage and cracking of the concrete are reduced, the compactness of the concrete is improved, and the durability of the concrete is improved.
本发明公开了一种混凝土用微米级矿物掺合料，由粉煤灰、硅灰、粒化高炉矿渣粉、石灰石粉、羟丙基甲基纤维素、MgO膨胀剂、聚羧酸减水剂、柠檬酸、硼酸、葡萄糖酸钠、过硫酸铵钠锂、酒石酸钠、纳米二氧碳酸钙、纳米二氧化硅、甲酸钙、乙酸钙、纤维素醚制备而成。本发明可提高混凝土强度、改善混凝土和易性；泌水少，同时能降低单方混凝土中水泥用量，减少混凝土中水化热；减少混凝土中自由水的用量，降低混凝土的收缩、开裂的风险、提高混凝土的密实度，提高混凝土的耐久性。
Micron-sized mineral admixture for concrete
The invention discloses a micron-sized mineral admixture for concrete. The concrete admixture is prepared from fly ash, silica fume, granulated blast furnace slag powder, limestone powder, hydroxypropyl methyl cellulose, MgO expanding agent, polycarboxylate superplasticizer, citric acid, boric acid, sodium gluconate, lithium sodium persulfate, sodium tartrate, nano calcium carbonate dioxide, nanosilicon dioxide, calcium formate, calcium acetate and cellulose ether. The concrete strength can be improved, and the concrete workability is improved; meanwhile, the use amount of cement in per cubicmeter of concrete can be reduced, and hydration heat in the concrete is reduced; the use amount of free water in the concrete is reduced, the risks of shrinkage and cracking of the concrete are reduced, the compactness of the concrete is improved, and the durability of the concrete is improved.
本发明公开了一种混凝土用微米级矿物掺合料，由粉煤灰、硅灰、粒化高炉矿渣粉、石灰石粉、羟丙基甲基纤维素、MgO膨胀剂、聚羧酸减水剂、柠檬酸、硼酸、葡萄糖酸钠、过硫酸铵钠锂、酒石酸钠、纳米二氧碳酸钙、纳米二氧化硅、甲酸钙、乙酸钙、纤维素醚制备而成。本发明可提高混凝土强度、改善混凝土和易性；泌水少，同时能降低单方混凝土中水泥用量，减少混凝土中水化热；减少混凝土中自由水的用量，降低混凝土的收缩、开裂的风险、提高混凝土的密实度，提高混凝土的耐久性。
Micron-sized mineral admixture for concrete
一种混凝土用微米级矿物掺合料
YE HONGHONG (author) / YANG YONG (author) / MA ZHENGLIN (author) / BAI XIAOBO (author) / WANG WEI (author) / FAN XINGBO (author) / WEI JIAXU (author) / LIU KUNJUE (author) / LI GUANYONG (author) / LI BAIYU (author)
2021-01-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Mineral admixture, preparation method of mineral admixture and concrete
| European Patent Office | 2023