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A platform for research: civil engineering, architecture and urbanism
Anti-freezing concrete and preparation method thereof
The invention discloses anti-freezing concrete which is prepared from Portland cement, active powder, a cross-linking agent, an anti-freezing agent, an air entraining agent, a water reducing agent, an expanding agent and cellulose ether. The concrete has the advantages that the freezing point of the concrete can be reduced, ice crystals in the concrete can be effectively prevented from growing, cracks caused by over-low temperature and volume expansion of the ice crystals in the concrete in a cold region are further reduced, and the phenomena of cracks, crisping and water seepage caused by repeated thawing and freezing of the concrete due to temperature difference change can be effectively solved; the strength, toughness and stability of the concrete are improved; the addition of the air entraining agent can introduce a large amount of fine closed bubbles into the concrete structure to form a certain telescopic space, so that the concrete material has a certain buffer space under the condition of large temperature difference between morning, day and night, thereby improving the freezing resistance of the concrete material.
本发明公开了一种抗冻混凝土，由硅酸盐水泥、活性粉末、交联剂、防冻剂、引气剂、减水剂、膨胀剂和纤维素醚制备而成。本发明优点在于可降低混凝土的结冰点，有效阻止混凝土中的冰晶长大，进而减少在寒冷地区混凝土由于温度过低，混凝土内部冰晶体积膨胀产生的裂缝，可有效解决由于温差变化导致混凝土反复融冻造成的裂纹、变酥、渗水现象，提高混凝土的强度、韧性和稳定性；引气剂的加入可以在混凝土的结构内部引入大量的细小封闭气泡，形成一定的伸缩空间，使得混凝土材料早昼夜温差大的情况下有一定的缓冲的空间，从而提高混凝土材料的抗冻性。
Anti-freezing concrete and preparation method thereof
The invention discloses anti-freezing concrete which is prepared from Portland cement, active powder, a cross-linking agent, an anti-freezing agent, an air entraining agent, a water reducing agent, an expanding agent and cellulose ether. The concrete has the advantages that the freezing point of the concrete can be reduced, ice crystals in the concrete can be effectively prevented from growing, cracks caused by over-low temperature and volume expansion of the ice crystals in the concrete in a cold region are further reduced, and the phenomena of cracks, crisping and water seepage caused by repeated thawing and freezing of the concrete due to temperature difference change can be effectively solved; the strength, toughness and stability of the concrete are improved; the addition of the air entraining agent can introduce a large amount of fine closed bubbles into the concrete structure to form a certain telescopic space, so that the concrete material has a certain buffer space under the condition of large temperature difference between morning, day and night, thereby improving the freezing resistance of the concrete material.
本发明公开了一种抗冻混凝土，由硅酸盐水泥、活性粉末、交联剂、防冻剂、引气剂、减水剂、膨胀剂和纤维素醚制备而成。本发明优点在于可降低混凝土的结冰点，有效阻止混凝土中的冰晶长大，进而减少在寒冷地区混凝土由于温度过低，混凝土内部冰晶体积膨胀产生的裂缝，可有效解决由于温差变化导致混凝土反复融冻造成的裂纹、变酥、渗水现象，提高混凝土的强度、韧性和稳定性；引气剂的加入可以在混凝土的结构内部引入大量的细小封闭气泡，形成一定的伸缩空间，使得混凝土材料早昼夜温差大的情况下有一定的缓冲的空间，从而提高混凝土材料的抗冻性。
Anti-freezing concrete and preparation method thereof
一种抗冻混凝土及其制备方法
LI LIREN (author) / XIANG MING (author) / DENG YAFEN (author) / CHEN XUDONG (author) / MAO HAIJUN (author) / WU QIAOLIAN (author) / YE YINGMIAO (author) / XIANG ZUOTIE (author)
2021-06-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME