Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete compactness enhancer and preparation method thereof
The invention relates to the technical field of building materials, and especially relates to a concrete compactness enhancer and a preparation method thereof. The concrete compactness enhancer comprises, by weight, 45-55 parts of acrylic acid, 95-105 parts of water, 30-40 parts of a chain transfer agent and 4-6 parts of an initiator. The crack resistance and the compactness of the concrete can beeffectively improved. The preparation method of the concrete compactness enhancer comprises the following steps: diluting the chain transfer agent: adding the chain transfer agent into water, and heating to 50-85 DEG C; performing a polymerization reaction: mixing acrylic acid and the initiator, adding the diluted chain transfer agent, and stirring to react for 2.5-3.5 hours to obtain sodium polyacrylate; and adjusting the pH: after the polymerization reaction is finished, cooling to 38-42 DEG C, then adopting NaOH for adjusting the pH of sodium polyacrylate to adjust the pH to 8.0-9.0. The preparation process is simple, and the prepared concrete compactness enhancer is better in effect.
本发明涉及建筑材料的技术领域，具体涉及一种混凝土密实增强剂及其制备方法。一种混凝土密实增强剂，包括如下重量份的各组分：丙烯酸45‑55份，水95‑105份，链转移剂30‑40份，引发剂4‑6份。其可以有效提高混凝土的抗裂性和密实度。混凝土密实增强剂的制备方法，包括如下步骤：链转移剂稀释：将链转移剂加入水中，并加热至50‑85℃；聚合反应：将丙烯酸和引发剂混合，再加入稀释的链转移剂，搅拌反应2.5‑3.5h，得到聚丙烯酸钠；调pH：聚合反应结束后，冷却至38‑42℃，再采用NaOH调聚丙烯酸钠的pH，将pH调至8.0‑9.0。其制备流程简单，制备的混凝土密实增强剂效果更佳。
Concrete compactness enhancer and preparation method thereof
The invention relates to the technical field of building materials, and especially relates to a concrete compactness enhancer and a preparation method thereof. The concrete compactness enhancer comprises, by weight, 45-55 parts of acrylic acid, 95-105 parts of water, 30-40 parts of a chain transfer agent and 4-6 parts of an initiator. The crack resistance and the compactness of the concrete can beeffectively improved. The preparation method of the concrete compactness enhancer comprises the following steps: diluting the chain transfer agent: adding the chain transfer agent into water, and heating to 50-85 DEG C; performing a polymerization reaction: mixing acrylic acid and the initiator, adding the diluted chain transfer agent, and stirring to react for 2.5-3.5 hours to obtain sodium polyacrylate; and adjusting the pH: after the polymerization reaction is finished, cooling to 38-42 DEG C, then adopting NaOH for adjusting the pH of sodium polyacrylate to adjust the pH to 8.0-9.0. The preparation process is simple, and the prepared concrete compactness enhancer is better in effect.
本发明涉及建筑材料的技术领域，具体涉及一种混凝土密实增强剂及其制备方法。一种混凝土密实增强剂，包括如下重量份的各组分：丙烯酸45‑55份，水95‑105份，链转移剂30‑40份，引发剂4‑6份。其可以有效提高混凝土的抗裂性和密实度。混凝土密实增强剂的制备方法，包括如下步骤：链转移剂稀释：将链转移剂加入水中，并加热至50‑85℃；聚合反应：将丙烯酸和引发剂混合，再加入稀释的链转移剂，搅拌反应2.5‑3.5h，得到聚丙烯酸钠；调pH：聚合反应结束后，冷却至38‑42℃，再采用NaOH调聚丙烯酸钠的pH，将pH调至8.0‑9.0。其制备流程简单，制备的混凝土密实增强剂效果更佳。
Concrete compactness enhancer and preparation method thereof
一种混凝土密实增强剂及其制备方法
ZHONG GENYA (Autor:in) / TENG WENSHENG (Autor:in) / SUN LIANG (Autor:in) / ZHANG JIYE (Autor:in)
18.09.2020
Patent
Elektronische Ressource
Chinesisch
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