Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Geological polymer recycled concrete and preparation method thereof
The invention relates to geological polymer recycled concrete and a preparation method thereof, and the geological polymer recycled concrete comprises the following components in parts by mass: 20-30 parts of fly ash, 30-40 parts of recycled coarse aggregate, 10-15 parts of natural river sand, 20-30 parts of an alkali activator, 1-2 parts of nano SiO2, 0.5-1.5 parts of MgO and 5-8 parts of water. Nano silicon dioxide and magnesium oxide are added into geopolymer recycled concrete, generation of micro-cracks is reduced by utilizing the filling seed crystal nucleation effect of nano silicon dioxide, shrinkage of geopolymer concrete is inhibited by utilizing the expansion effect of magnesium oxide after reaction, and the geopolymer recycled concrete can be recycled under the synergistic effect of nano silicon dioxide and magnesium oxide. The durability and the impermeability of the geopolymer recycled concrete can be obviously improved. In order to solve the problem that the adhesion degree of the recycled coarse aggregate is not enough in the polymerization procedure, the recycled coarse aggregate is pretreated, so that the recycled coarse aggregate adsorbs a mixed solution composed of orthosilicate and a silane coupling agent, the adhesion effect can be greatly improved, and the microporous structure is optimized while the strength of the polymer recycled concrete is effectively improved.
本申请涉及一种地质聚物再生混凝土及其制备方法，其按照质量份数比，包括以下组分：粉煤灰20~30份，再生粗骨料30~40份，天然河沙10~15份，碱激发剂20~30份，纳米SiO21~2份，MgO 0.5~1.5份，水5~8份。本申请中在地质聚合物再生混凝土中加入了纳米二氧化硅和氧化镁，利用纳米二氧化硅的填充性晶种成核作用，减少微裂缝的产生，利用氧化镁反应后膨胀作用，抑制地聚物混凝土的收缩，两者的协同作用，可以明显的改善地质聚合物再生混凝土的耐久性和抗渗性。针对再生粗骨料在聚合规程中粘合度不够的问题，本申请中对再生粗骨料进行预处理，使其吸附了正硅酸酯和硅烷偶联剂组成的混合溶液，可以大幅度的提升粘合效果，在有效提升聚合物再生混凝土的强度同时优化微孔结构。
Geological polymer recycled concrete and preparation method thereof
The invention relates to geological polymer recycled concrete and a preparation method thereof, and the geological polymer recycled concrete comprises the following components in parts by mass: 20-30 parts of fly ash, 30-40 parts of recycled coarse aggregate, 10-15 parts of natural river sand, 20-30 parts of an alkali activator, 1-2 parts of nano SiO2, 0.5-1.5 parts of MgO and 5-8 parts of water. Nano silicon dioxide and magnesium oxide are added into geopolymer recycled concrete, generation of micro-cracks is reduced by utilizing the filling seed crystal nucleation effect of nano silicon dioxide, shrinkage of geopolymer concrete is inhibited by utilizing the expansion effect of magnesium oxide after reaction, and the geopolymer recycled concrete can be recycled under the synergistic effect of nano silicon dioxide and magnesium oxide. The durability and the impermeability of the geopolymer recycled concrete can be obviously improved. In order to solve the problem that the adhesion degree of the recycled coarse aggregate is not enough in the polymerization procedure, the recycled coarse aggregate is pretreated, so that the recycled coarse aggregate adsorbs a mixed solution composed of orthosilicate and a silane coupling agent, the adhesion effect can be greatly improved, and the microporous structure is optimized while the strength of the polymer recycled concrete is effectively improved.
本申请涉及一种地质聚物再生混凝土及其制备方法，其按照质量份数比，包括以下组分：粉煤灰20~30份，再生粗骨料30~40份，天然河沙10~15份，碱激发剂20~30份，纳米SiO21~2份，MgO 0.5~1.5份，水5~8份。本申请中在地质聚合物再生混凝土中加入了纳米二氧化硅和氧化镁，利用纳米二氧化硅的填充性晶种成核作用，减少微裂缝的产生，利用氧化镁反应后膨胀作用，抑制地聚物混凝土的收缩，两者的协同作用，可以明显的改善地质聚合物再生混凝土的耐久性和抗渗性。针对再生粗骨料在聚合规程中粘合度不够的问题，本申请中对再生粗骨料进行预处理，使其吸附了正硅酸酯和硅烷偶联剂组成的混合溶液，可以大幅度的提升粘合效果，在有效提升聚合物再生混凝土的强度同时优化微孔结构。
Geological polymer recycled concrete and preparation method thereof
一种地质聚物再生混凝土及其制备方法
ZHANG WENHUA (Autor:in) / YU DENGPING (Autor:in)
04.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Recycled polymer concrete material and preparation method thereof
| Europäisches Patentamt | 2023
Green polymer concrete recycled brick and preparation method thereof
| Europäisches Patentamt | 2020
Recycled concrete, recycled concrete prefabricated part and preparation method thereof
| Europäisches Patentamt | 2021
High polymer environment-friendly recycled concrete and preparation method thereof
| Europäisches Patentamt | 2023
High polymer environment-friendly recycled concrete and preparation method thereof
| Europäisches Patentamt | 2022