Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Regenerated micro-powder green cement and preparation method thereof
The invention particularly discloses regenerated micro-powder green cement and a preparation method thereof. The regenerated micro powder green cement is prepared from the following raw materials: cement, regenerated micro powder, fly ash, hydrophobic nano silicon dioxide, sodium silicate and ferric sulfate. The preparation method comprises the following steps: immersing the regenerated micro powder in a hydrochloric acid solution, stirring, filtering, drying, grinding, adding other raw materials, and uniformly stirring and mixing. After the raw materials are uniformly mixed and then water is added, micropores of the regenerated micro powder are filled with the hydrophobic nano silicon dioxide, so that the compactness of the concrete is improved, the cracking of the concrete is inhibited, colloidal precipitates are separated out through sodium silicate decomposition, the adhesion between hydrophobic nano silicon dioxide particles and the regenerated micro powder is realized, the durability of the anti-cracking effect is favorably prolonged, and the service life of the concrete is prolonged. The ferric sulfate can also react with calcium hydroxide in the concrete to generate precipitates, internal gaps of the concrete are blocked to form supports, the anti-cracking effect of the concrete is further improved, the reutilization rate of waste concrete resources is increased, and promotion and application of the regenerated micro powder are facilitated.
本申请具体公开了一种再生微粉绿色水泥及其制备方法。再生微粉绿色水泥包括以下原料：水泥、再生微粉、粉煤灰、疏水纳米二氧化硅、硅酸钠和硫酸铁；其制备方法为：将再生微粉浸没于盐酸溶液中，搅拌，过滤烘干，研磨，再加入其他原料搅拌混匀。当原料均匀混合然后加水后，疏水纳米二氧化硅将填充在再生微粉的微细孔隙内，提高混凝土的密实度，抑制混凝土开裂，硅酸钠分解析出胶质沉淀，实现疏水纳米二氧化硅颗粒和再生微粉之间的粘附，有利于延长抗裂效果的持久性，硫酸铁还可和混凝土中的氢氧化钙反应生成沉淀，堵塞混凝土内部空隙形成支撑，进一步提高混凝土的抗裂效果，并提高了废弃混凝土资源的再利用率，有助于促进再生微粉的推广使用。
Regenerated micro-powder green cement and preparation method thereof
The invention particularly discloses regenerated micro-powder green cement and a preparation method thereof. The regenerated micro powder green cement is prepared from the following raw materials: cement, regenerated micro powder, fly ash, hydrophobic nano silicon dioxide, sodium silicate and ferric sulfate. The preparation method comprises the following steps: immersing the regenerated micro powder in a hydrochloric acid solution, stirring, filtering, drying, grinding, adding other raw materials, and uniformly stirring and mixing. After the raw materials are uniformly mixed and then water is added, micropores of the regenerated micro powder are filled with the hydrophobic nano silicon dioxide, so that the compactness of the concrete is improved, the cracking of the concrete is inhibited, colloidal precipitates are separated out through sodium silicate decomposition, the adhesion between hydrophobic nano silicon dioxide particles and the regenerated micro powder is realized, the durability of the anti-cracking effect is favorably prolonged, and the service life of the concrete is prolonged. The ferric sulfate can also react with calcium hydroxide in the concrete to generate precipitates, internal gaps of the concrete are blocked to form supports, the anti-cracking effect of the concrete is further improved, the reutilization rate of waste concrete resources is increased, and promotion and application of the regenerated micro powder are facilitated.
本申请具体公开了一种再生微粉绿色水泥及其制备方法。再生微粉绿色水泥包括以下原料：水泥、再生微粉、粉煤灰、疏水纳米二氧化硅、硅酸钠和硫酸铁；其制备方法为：将再生微粉浸没于盐酸溶液中，搅拌，过滤烘干，研磨，再加入其他原料搅拌混匀。当原料均匀混合然后加水后，疏水纳米二氧化硅将填充在再生微粉的微细孔隙内，提高混凝土的密实度，抑制混凝土开裂，硅酸钠分解析出胶质沉淀，实现疏水纳米二氧化硅颗粒和再生微粉之间的粘附，有利于延长抗裂效果的持久性，硫酸铁还可和混凝土中的氢氧化钙反应生成沉淀，堵塞混凝土内部空隙形成支撑，进一步提高混凝土的抗裂效果，并提高了废弃混凝土资源的再利用率，有助于促进再生微粉的推广使用。
Regenerated micro-powder green cement and preparation method thereof
一种再生微粉绿色水泥及其制备方法
ZHANG JIYONG (Autor:in) / XIONG HAO (Autor:in)
12.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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