Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the field and particularly discloses high-strength anti-cracking concrete and a preparation process thereof. The high-strength anti-cracking concrete comprises the following components: cement, fly ash, coarse aggregate, fine aggregate, mineral powder, modified ceramsite, a polycarboxylate superplasticizer, ceramic fibers, chitosan microspheres and water. The preparation process for the modified ceramsite comprises the following steps: (1) putting rice hull ash into a dopamine solution with a concentration of 1 g/L, and successively carrying out uniform stirring, centrifuging, cleaning and drying to obtain pretreated rice hull ash; (2) mixing the pretreated rice hull ash with polyethylene glycol and an absolute ethyl alcohol solution, conducting stirring, performing heating to 45-50 DEG C, and carrying out stirring to prepare a modified rice hull ash solution; and (3) soaking porous ceramsite in the modified rice hull ash solution, conducting vacuumizing, taking out the porous ceramsite, cooling the porous ceramsite, and encapsulating the porous ceramsite with an encapsulating material to obtain modified ceramsite. The high-strength anti-cracking concrete has the advantages of high strength, high crack resistance and good self-repairing effect.
本申请涉及领域，具体公开了一种高强度抗开裂混凝土及其制备工艺。高强度抗开裂混凝土包括以下组分：水泥、粉煤灰、粗骨料、细骨料、矿粉、改性陶粒、聚羧酸减水剂、陶瓷纤维、壳聚糖微球，水；所述改性陶粒由以下方法制成：（1）将稻壳灰置于浓度为1g/L的多巴胺溶液中，搅拌均匀，离心，清洗，干燥，获得预处理稻壳灰；（2）将预处理稻壳灰与聚乙二醇、无水乙醇溶液混合，搅拌，升温至45‑50℃，搅拌，制成改性稻壳灰溶液；（3）将多孔陶粒浸渍在改性稻壳灰溶液中，抽真空，将多孔陶粒取出，冷却，然后使用封装材料进行包封，制得改性陶粒。本申请的高强度抗开裂混凝土具有强度高、抗裂性强、自修复效果好的优点。
The invention relates to the field and particularly discloses high-strength anti-cracking concrete and a preparation process thereof. The high-strength anti-cracking concrete comprises the following components: cement, fly ash, coarse aggregate, fine aggregate, mineral powder, modified ceramsite, a polycarboxylate superplasticizer, ceramic fibers, chitosan microspheres and water. The preparation process for the modified ceramsite comprises the following steps: (1) putting rice hull ash into a dopamine solution with a concentration of 1 g/L, and successively carrying out uniform stirring, centrifuging, cleaning and drying to obtain pretreated rice hull ash; (2) mixing the pretreated rice hull ash with polyethylene glycol and an absolute ethyl alcohol solution, conducting stirring, performing heating to 45-50 DEG C, and carrying out stirring to prepare a modified rice hull ash solution; and (3) soaking porous ceramsite in the modified rice hull ash solution, conducting vacuumizing, taking out the porous ceramsite, cooling the porous ceramsite, and encapsulating the porous ceramsite with an encapsulating material to obtain modified ceramsite. The high-strength anti-cracking concrete has the advantages of high strength, high crack resistance and good self-repairing effect.
本申请涉及领域，具体公开了一种高强度抗开裂混凝土及其制备工艺。高强度抗开裂混凝土包括以下组分：水泥、粉煤灰、粗骨料、细骨料、矿粉、改性陶粒、聚羧酸减水剂、陶瓷纤维、壳聚糖微球，水；所述改性陶粒由以下方法制成：（1）将稻壳灰置于浓度为1g/L的多巴胺溶液中，搅拌均匀，离心，清洗，干燥，获得预处理稻壳灰；（2）将预处理稻壳灰与聚乙二醇、无水乙醇溶液混合，搅拌，升温至45‑50℃，搅拌，制成改性稻壳灰溶液；（3）将多孔陶粒浸渍在改性稻壳灰溶液中，抽真空，将多孔陶粒取出，冷却，然后使用封装材料进行包封，制得改性陶粒。本申请的高强度抗开裂混凝土具有强度高、抗裂性强、自修复效果好的优点。
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