Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Formula and preparation method of high-strength recycled concrete
The invention relates to the field of recycled concrete, and discloses a high-strength recycled concrete formula and a preparation method thereof, the high-strength recycled concrete formula comprises the following raw materials by weight: 180-240 parts of cement, 600-800 parts of hydrophobic modified recycled coarse aggregate, 180-280 parts of recycled fine aggregate, 400-600 parts of sand, 300-500 parts of fly ash, 60-120 parts of silica fume, and 20-30 parts of a water reducer, the modified waste rubber powder is prepared from, by weight, 25-35 parts of modified waste rubber powder, 10-40 parts of polyethylene wax, 2-4 parts of m-phenylenediamine and 12-16 parts of tetramethyl orthosilicate. In the invention, by using a large amount of recycled aggregate (coarse aggregate and fine aggregate), the exploitation of new natural resources is effectively reduced, the reutilization rate of building wastes is improved, and by optimizing the proportion and adding a plurality of modifiers (such as silica fume, fly ash, modified waste rubber powder and the like), the mechanical properties such as compression resistance, fracture resistance and the like of the concrete are remarkably improved; by adding the hydrophobic modified recycled coarse aggregate and the penetrant, the impermeability and durability of the concrete are enhanced, so that the performance and the application range of the recycled concrete are improved.
本发明涉及再生混凝土的领域，公开了一种高强度再生混凝土的配方及其配制方法，该高强度再生混凝土的配方，原料按重量份包括：水泥180‑240份，疏水改性再生粗骨料600‑800份，再生细骨料180‑280份，砂400‑600份，粉煤灰300‑500份，硅灰60‑120份，减水剂20‑30份，改性废弃橡胶粉末25‑35份，聚乙烯蜡10‑40份，间苯二胺2‑4份，正硅酸甲酯12‑16份。在本发明中，通过大量使用再生骨料(粗骨料和细骨料)，有效减少了对新自然资源的开采，提高了建筑废弃物的再利用率，通过优化配比和添加多种改性剂(如硅灰、粉煤灰、改性废弃橡胶粉末等)，显著提高了混凝土的抗压、抗折等力学性能，疏水改性再生粗骨料和渗透剂的加入，增强了混凝土的抗渗性和耐久性，从而提高了再生混凝土性能与应用范围。
Formula and preparation method of high-strength recycled concrete
The invention relates to the field of recycled concrete, and discloses a high-strength recycled concrete formula and a preparation method thereof, the high-strength recycled concrete formula comprises the following raw materials by weight: 180-240 parts of cement, 600-800 parts of hydrophobic modified recycled coarse aggregate, 180-280 parts of recycled fine aggregate, 400-600 parts of sand, 300-500 parts of fly ash, 60-120 parts of silica fume, and 20-30 parts of a water reducer, the modified waste rubber powder is prepared from, by weight, 25-35 parts of modified waste rubber powder, 10-40 parts of polyethylene wax, 2-4 parts of m-phenylenediamine and 12-16 parts of tetramethyl orthosilicate. In the invention, by using a large amount of recycled aggregate (coarse aggregate and fine aggregate), the exploitation of new natural resources is effectively reduced, the reutilization rate of building wastes is improved, and by optimizing the proportion and adding a plurality of modifiers (such as silica fume, fly ash, modified waste rubber powder and the like), the mechanical properties such as compression resistance, fracture resistance and the like of the concrete are remarkably improved; by adding the hydrophobic modified recycled coarse aggregate and the penetrant, the impermeability and durability of the concrete are enhanced, so that the performance and the application range of the recycled concrete are improved.
本发明涉及再生混凝土的领域，公开了一种高强度再生混凝土的配方及其配制方法，该高强度再生混凝土的配方，原料按重量份包括：水泥180‑240份，疏水改性再生粗骨料600‑800份，再生细骨料180‑280份，砂400‑600份，粉煤灰300‑500份，硅灰60‑120份，减水剂20‑30份，改性废弃橡胶粉末25‑35份，聚乙烯蜡10‑40份，间苯二胺2‑4份，正硅酸甲酯12‑16份。在本发明中，通过大量使用再生骨料(粗骨料和细骨料)，有效减少了对新自然资源的开采，提高了建筑废弃物的再利用率，通过优化配比和添加多种改性剂(如硅灰、粉煤灰、改性废弃橡胶粉末等)，显著提高了混凝土的抗压、抗折等力学性能，疏水改性再生粗骨料和渗透剂的加入，增强了混凝土的抗渗性和耐久性，从而提高了再生混凝土性能与应用范围。
Formula and preparation method of high-strength recycled concrete
一种高强度再生混凝土的配方及其配制方法
ZHOU GENLIANG (Autor:in) / ZHOU HUILIANG (Autor:in) / TANG YINGJIE (Autor:in)
07.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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