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Concrete containing recycled aggregate and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses recycled aggregate-containing concrete, which is prepared from the following components: water, cement, fly ash, fine sand, modified recycled aggregate, broken stone and a water reducing agent, and a modification method of the modified recycled aggregate comprises the following steps: 1) preparing a liquid culture medium and a modification liquid; 2) adding streptococcus thermophilus, bacillus subtilis and brown azotobacter to obtain a bacterial suspension; 3) putting the recycled aggregate into the bacterial suspension, soaking, and filtering out the recycled aggregate to obtain pretreated recycled aggregate; 4, the pretreated recycled aggregate is cultured at the constant temperature of 25-30 DEG C and the relative humidity of 80-95% for 7-10 d and dried, and the modified recycled aggregate is obtained.The method has the advantages that the negative influence of the recycled aggregate on the concrete strength is reduced, accumulated waste concrete solids can be better digested, the method is more environmentally friendly, and environmental pollution can be better reduced.
本发明涉及混凝土技术领域，具体公开了一种含有再生骨料的混凝土，包括以下组分：水、水泥、粉煤灰、细砂、改性再生骨料、碎石、减水剂，改性再生骨料的改性方法：1），配置液体培养基及改性液；2），投入嗜热乳酸链球菌、枯草芽孢杆菌、棕色固氮菌，得菌悬液；3），将再生骨料投入菌悬液中，浸泡，滤出再生骨料，得预处理再生骨料；4），将预处理再生骨料在温度为25‑30℃、相对湿度80‑95%下恒温培养7‑10d，干燥，得改性再生骨料；本发明具有减少再生骨料对混凝土强度的负面影响从而能更好地消化累积的废弃混凝土固体，对环境更为友好，能更好地减少环境污染的优点。
Concrete containing recycled aggregate and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses recycled aggregate-containing concrete, which is prepared from the following components: water, cement, fly ash, fine sand, modified recycled aggregate, broken stone and a water reducing agent, and a modification method of the modified recycled aggregate comprises the following steps: 1) preparing a liquid culture medium and a modification liquid; 2) adding streptococcus thermophilus, bacillus subtilis and brown azotobacter to obtain a bacterial suspension; 3) putting the recycled aggregate into the bacterial suspension, soaking, and filtering out the recycled aggregate to obtain pretreated recycled aggregate; 4, the pretreated recycled aggregate is cultured at the constant temperature of 25-30 DEG C and the relative humidity of 80-95% for 7-10 d and dried, and the modified recycled aggregate is obtained.The method has the advantages that the negative influence of the recycled aggregate on the concrete strength is reduced, accumulated waste concrete solids can be better digested, the method is more environmentally friendly, and environmental pollution can be better reduced.
本发明涉及混凝土技术领域，具体公开了一种含有再生骨料的混凝土，包括以下组分：水、水泥、粉煤灰、细砂、改性再生骨料、碎石、减水剂，改性再生骨料的改性方法：1），配置液体培养基及改性液；2），投入嗜热乳酸链球菌、枯草芽孢杆菌、棕色固氮菌，得菌悬液；3），将再生骨料投入菌悬液中，浸泡，滤出再生骨料，得预处理再生骨料；4），将预处理再生骨料在温度为25‑30℃、相对湿度80‑95%下恒温培养7‑10d，干燥，得改性再生骨料；本发明具有减少再生骨料对混凝土强度的负面影响从而能更好地消化累积的废弃混凝土固体，对环境更为友好，能更好地减少环境污染的优点。
Concrete containing recycled aggregate and preparation method thereof
一种含有再生骨料的混凝土及其制备方法
CHEN JINGBANG (author)
2024-02-02
Patent
Electronic Resource
Chinese
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