Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-shrinkage anti-carbonization steel slag geopolymer concrete
The invention discloses low-shrinkage anti-carbonization steel slag geopolymer concrete. The steel slag geopolymer concrete comprises the following components: fly ash, mineral powder, kaolin, coarseand fine aggregates of steel slag, sodium hydroxide, sodium silicate and free water. The steel slag geopolymer concrete is characterized in that the mixing proportion of the fly ash is 271.6 kg/m<3>;the mixing proportion of the mineral powder is 38.8 kg/m<3>; the mixing proportion of a sodium hydroxide solution is 55.3 kg/m<3>; the mixing proportion of a sodium silicate solution is 138.7 kg/m<3>;the mixing proportion of the coarse aggregate of steel slag is 1200-1700 kg/m<3>; the mixing proportion of the fine aggregate of steel slag is 619.5 kg/m<3>; the mixing proportion of the kaolin is 83.7 kg/m<3>; and the mixing proportion of the free water is 13.3 kg/m<3>. Compared with the traditional slag aggregate concrete, the steel slag aggregate geopolymer concrete has higher compressive strength, can compensate shrinkage and reduce carbonization, and is enhanced in frost resistance. The mineral powder and the coal ash are mixed, so the expansibility influence of steel slag crystalline substances on the concrete is relieved and delayed. According to the invention, the used raw materials are simple, the early strength of a solidified body is improved by utilizing the waste steel slag and doping a small amount of kaolin, and the concrete has the advantages of low carbon, environmental protection performance, high strength, low shrinkage and good carbonization resistance.
本发明公开了一种低收缩、抗碳化的钢渣地聚物混凝土，包括如下各组分：粉煤灰、矿粉、高岭土、钢渣粗细骨料、氢氧化钠、硅酸钠、游离水，其特征在于，其配合比为粉煤灰为271.6kg/m，矿粉为38.8kg/m，氢氧化钠溶液为55.3kg/m，硅酸钠溶液为138.7kg/m，钢渣粗骨料为1200‑1700kg/m，钢渣细骨料为619.5kg/m，高岭土为83.7kg/m，游离水13.3kg/m。钢渣集料地聚物混凝土比传统集料矿渣集料混凝土具有更高的抗压强度，可补偿收缩，减小碳化，亦使抗冻性有所提升。矿粉、粉煤灰混合缓解延迟了钢渣结晶物质对混凝土产生的膨胀性影响。本发明使用原料简单，利用废弃钢渣且掺入少量的高岭土提高固结体早期强度，具有低碳环保、强度高、低收缩性、抗碳化性好的优点。
Low-shrinkage anti-carbonization steel slag geopolymer concrete
The invention discloses low-shrinkage anti-carbonization steel slag geopolymer concrete. The steel slag geopolymer concrete comprises the following components: fly ash, mineral powder, kaolin, coarseand fine aggregates of steel slag, sodium hydroxide, sodium silicate and free water. The steel slag geopolymer concrete is characterized in that the mixing proportion of the fly ash is 271.6 kg/m<3>;the mixing proportion of the mineral powder is 38.8 kg/m<3>; the mixing proportion of a sodium hydroxide solution is 55.3 kg/m<3>; the mixing proportion of a sodium silicate solution is 138.7 kg/m<3>;the mixing proportion of the coarse aggregate of steel slag is 1200-1700 kg/m<3>; the mixing proportion of the fine aggregate of steel slag is 619.5 kg/m<3>; the mixing proportion of the kaolin is 83.7 kg/m<3>; and the mixing proportion of the free water is 13.3 kg/m<3>. Compared with the traditional slag aggregate concrete, the steel slag aggregate geopolymer concrete has higher compressive strength, can compensate shrinkage and reduce carbonization, and is enhanced in frost resistance. The mineral powder and the coal ash are mixed, so the expansibility influence of steel slag crystalline substances on the concrete is relieved and delayed. According to the invention, the used raw materials are simple, the early strength of a solidified body is improved by utilizing the waste steel slag and doping a small amount of kaolin, and the concrete has the advantages of low carbon, environmental protection performance, high strength, low shrinkage and good carbonization resistance.
本发明公开了一种低收缩、抗碳化的钢渣地聚物混凝土，包括如下各组分：粉煤灰、矿粉、高岭土、钢渣粗细骨料、氢氧化钠、硅酸钠、游离水，其特征在于，其配合比为粉煤灰为271.6kg/m，矿粉为38.8kg/m，氢氧化钠溶液为55.3kg/m，硅酸钠溶液为138.7kg/m，钢渣粗骨料为1200‑1700kg/m，钢渣细骨料为619.5kg/m，高岭土为83.7kg/m，游离水13.3kg/m。钢渣集料地聚物混凝土比传统集料矿渣集料混凝土具有更高的抗压强度，可补偿收缩，减小碳化，亦使抗冻性有所提升。矿粉、粉煤灰混合缓解延迟了钢渣结晶物质对混凝土产生的膨胀性影响。本发明使用原料简单，利用废弃钢渣且掺入少量的高岭土提高固结体早期强度，具有低碳环保、强度高、低收缩性、抗碳化性好的优点。
Low-shrinkage anti-carbonization steel slag geopolymer concrete
一种低收缩、抗碳化的钢渣地聚物混凝土
LUO BAIFU (Autor:in) / FENG QINQIN (Autor:in) / LI CHENG (Autor:in) / ZHANG WEI (Autor:in) / WANG DONG (Autor:in)
04.09.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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