Quick-setting concrete material and preparation method thereof: Fid-Bau Portal

Quick-setting concrete material and preparation method thereof

WANG KEKE / WU XIANG / FAN XIAOXIAO

The invention relates to the field of concrete, and discloses a quick-setting concrete material and a preparation method thereof. According to the invention, the epoxy resin, the cement, the coarse aggregate, the fine aggregate, the accelerator, the water reducing agent and the toughening curing agent are used as raw materials to prepare the quick-setting concrete material; the fine aggregate is modified metakaolin, melanin-like nanoparticles are prepared through the auto-oxidation performance of dopamine hydrochloride, the melanin-like nanoparticles are deposited on the metakaolin material to obtain the modified metakaolin with excellent anti-ultraviolet performance, the modified metakaolin is used as the fine aggregate to be doped into the concrete material, and the anti-ultraviolet performance of the concrete is improved. The ultraviolet aging resistance of the concrete material can be improved; the modified calcium lignosulphonate nano powder is added, so that the modified calcium lignosulphonate nano powder can be used as a water reducing agent with good compatibility with a concrete material while playing a role in preventing ultraviolet aging.

本发明涉及混凝土领域，公开了一种速凝混凝土材料及其制备方法。本发明中，以环氧树脂、水泥、粗骨料、细骨料、速凝剂、减水剂、增韧固化剂为原材料，制备得到一种速凝混凝土材料；本发明的细骨料为改性偏高岭土：通过盐酸多巴胺的自氧化性能，制备得到类黑色素纳米粒子，使其沉积在偏高岭土材料上，得到拥有优秀防紫外性能的改性偏高岭土，将改性偏高岭土作为细骨料掺入混凝土材料，可提升混凝土材料的防紫外老化性能；本发明加入了改性木质素磺酸钙纳米粉末，起到防紫外老化作用的同时，还可作为一种与混凝土材料相容性好的减水剂。

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