A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides recycled concrete based on waste concrete and a preparation method thereof. The recycled concrete is prepared from, by mass, 22-35% of the waste concrete, 20-35% of cement, 20-40% of aggregate, 3-5% of a superplasticizer and 2-4% of a modifier. According to the recycled concrete, by means of reasonable raw material matching and targeted process optimization, the auxiliary matching and cooperation effect among the components is high, the performance stability of the product is improved by more than one time, a water reducing rate is high, the slump loss resistance and workability of the cement are also remarkably improved, and the 28-d compressive strength of the cement can reach 60 MPa or above.
本发明提出了一种基于废弃混凝土的再生混凝土及其制备方法，该再生混凝土包括以下质量百分含量组分：废弃混凝土22‑35%、水泥20‑35%、骨料20‑40%、高效减水剂3‑5%、改性剂2‑4%，本发明通过合理的原料选配和针对性的工艺优化，组分间辅配协作效果强，产品性能稳定性提高了一倍以上，减水率高，保坍型和易性也具有显著的改善，28d抗压强度可达60MPa以上。
The invention provides recycled concrete based on waste concrete and a preparation method thereof. The recycled concrete is prepared from, by mass, 22-35% of the waste concrete, 20-35% of cement, 20-40% of aggregate, 3-5% of a superplasticizer and 2-4% of a modifier. According to the recycled concrete, by means of reasonable raw material matching and targeted process optimization, the auxiliary matching and cooperation effect among the components is high, the performance stability of the product is improved by more than one time, a water reducing rate is high, the slump loss resistance and workability of the cement are also remarkably improved, and the 28-d compressive strength of the cement can reach 60 MPa or above.
本发明提出了一种基于废弃混凝土的再生混凝土及其制备方法，该再生混凝土包括以下质量百分含量组分：废弃混凝土22‑35%、水泥20‑35%、骨料20‑40%、高效减水剂3‑5%、改性剂2‑4%，本发明通过合理的原料选配和针对性的工艺优化，组分间辅配协作效果强，产品性能稳定性提高了一倍以上，减水率高，保坍型和易性也具有显著的改善，28d抗压强度可达60MPa以上。
Recycled concrete based on waste concrete and preparation method thereof
| European Patent Office | 2020
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| European Patent Office | 2020