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A platform for research: civil engineering, architecture and urbanism
Sulfate-erosion-resistant recycled concrete and preparation method thereof
The invention belongs to the technical field of recycled concrete, and provides sulfate corrosion resistant recycled concrete and a preparation method thereof, the sulfate corrosion resistant recycled concrete comprises the following components by weight: 110-120 parts of recycled coarse aggregate, 30-40 parts of cement, 2-4 parts of limestone powder, 16-20 parts of water, 60-65 parts of natural fine aggregate, 0.12-0.20 part of a chelating agent, and 0.3-0.4 part of polyvinyl alcohol fiber. By optimizing the specific surface area, dosage and other parameters of the limestone powder and adding the chelating agent, the pore structure of the concrete is improved, and substances capable of generating erosion expansion reaction are reduced, so that the sulfate erosion resistance of the concrete is improved. Meanwhile, the adopted coarse aggregate is all from building solid waste, the resource utilization efficiency can be improved, sustainable development is achieved, and good social and economic benefits are achieved.
本发明属于再生混凝土技术领域，提供了一种抗硫酸盐侵蚀再生混凝土及其制备方法，包括以下重量份的组分：再生粗骨料110‑120份，水泥30‑40份，石灰石粉2‑4份，水16‑20份，天然细骨料60‑65份，螯合剂0.12‑0.20份，聚乙烯醇纤维0.3‑0.4份。本发明通过优化石灰石粉比表面积、用量等参数和加入螯合剂，改善混凝土的孔结构和减少可发生侵蚀膨胀反应的物质，以提高混凝土的抗硫酸盐侵蚀的性能。同时，本发明所采用的粗骨料均来自于建筑固废，可提高资源利用效率，具有可持续发展，具有良好的社会、经济效益。
Sulfate-erosion-resistant recycled concrete and preparation method thereof
The invention belongs to the technical field of recycled concrete, and provides sulfate corrosion resistant recycled concrete and a preparation method thereof, the sulfate corrosion resistant recycled concrete comprises the following components by weight: 110-120 parts of recycled coarse aggregate, 30-40 parts of cement, 2-4 parts of limestone powder, 16-20 parts of water, 60-65 parts of natural fine aggregate, 0.12-0.20 part of a chelating agent, and 0.3-0.4 part of polyvinyl alcohol fiber. By optimizing the specific surface area, dosage and other parameters of the limestone powder and adding the chelating agent, the pore structure of the concrete is improved, and substances capable of generating erosion expansion reaction are reduced, so that the sulfate erosion resistance of the concrete is improved. Meanwhile, the adopted coarse aggregate is all from building solid waste, the resource utilization efficiency can be improved, sustainable development is achieved, and good social and economic benefits are achieved.
本发明属于再生混凝土技术领域，提供了一种抗硫酸盐侵蚀再生混凝土及其制备方法，包括以下重量份的组分：再生粗骨料110‑120份，水泥30‑40份，石灰石粉2‑4份，水16‑20份，天然细骨料60‑65份，螯合剂0.12‑0.20份，聚乙烯醇纤维0.3‑0.4份。本发明通过优化石灰石粉比表面积、用量等参数和加入螯合剂，改善混凝土的孔结构和减少可发生侵蚀膨胀反应的物质，以提高混凝土的抗硫酸盐侵蚀的性能。同时，本发明所采用的粗骨料均来自于建筑固废，可提高资源利用效率，具有可持续发展，具有良好的社会、经济效益。
Sulfate-erosion-resistant recycled concrete and preparation method thereof
一种抗硫酸盐侵蚀再生混凝土及其制备方法
YAN XIANCUI (author) / CHEN WEN (author) / ZHU PINGHUA (author) / LIU HUI (author) / ZONG MEIRONG (author) / YANG LEI (author) / HE ZIMO (author)
2023-12-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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