Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Responsive concrete antifreeze agent as well as preparation method and application thereof
The invention relates to a responsive concrete antifreeze agent as well as a preparation method and application thereof. The preparation method of the antifreeze agent comprises the following steps of: (1) adding NaOH and urea into water to obtain a NaOH/urea solution; (2) adding hydroxyethyl cellulose and carboxylated chitosan into the NaOH/urea solution to obtain a cellulose/chitosan solution; adding polyvinyl alcohol and chitin into the NaOH/urea solution to obtain a polyvinyl alcohol/chitin solution; and (3) uniformly mixing the cellulose/chitosan solution and the polyvinyl alcohol/chitinsolution, and removing bubbles to obtain the responsive concrete antifreeze agent. During application, the responsive concrete antifreeze agent is added into a concrete mixture, and the mixing amountof the responsive concrete antifreeze agent is 2-10% of the mass of a cementing material. Compared with the prior art, the freeze-thaw damage of concrete can be effectively reduced, and the service life of a concrete material under the temperature alternating condition is prolonged.
本发明涉及一种响应型混凝土抗冻剂及其制备方法与应用，抗冻剂的制备方法包括以下步骤：1)将NaOH及尿素加入至水中，得到NaOH/尿素溶液；2)将羟乙基纤维素及羧化壳聚糖加入至NaOH/尿素溶液中，得到纤维素/壳聚糖溶液；将聚乙烯醇及甲壳素加入至NaOH/尿素溶液中，得到聚乙烯醇/甲壳素溶液；3)将纤维素/壳聚糖溶液与聚乙烯醇/甲壳素溶液混合均匀并去除气泡，即得到响应型混凝土抗冻剂；应用时，将响应型混凝土抗冻剂加入至混凝土拌合物中，响应型混凝土抗冻剂的掺量为胶凝材料质量的2‑10％。与现有技术相比，本发明能够有效降低混凝土的冻融损伤，提高混凝土材料在温度交变条件下的服役寿命。
Responsive concrete antifreeze agent as well as preparation method and application thereof
The invention relates to a responsive concrete antifreeze agent as well as a preparation method and application thereof. The preparation method of the antifreeze agent comprises the following steps of: (1) adding NaOH and urea into water to obtain a NaOH/urea solution; (2) adding hydroxyethyl cellulose and carboxylated chitosan into the NaOH/urea solution to obtain a cellulose/chitosan solution; adding polyvinyl alcohol and chitin into the NaOH/urea solution to obtain a polyvinyl alcohol/chitin solution; and (3) uniformly mixing the cellulose/chitosan solution and the polyvinyl alcohol/chitinsolution, and removing bubbles to obtain the responsive concrete antifreeze agent. During application, the responsive concrete antifreeze agent is added into a concrete mixture, and the mixing amountof the responsive concrete antifreeze agent is 2-10% of the mass of a cementing material. Compared with the prior art, the freeze-thaw damage of concrete can be effectively reduced, and the service life of a concrete material under the temperature alternating condition is prolonged.
本发明涉及一种响应型混凝土抗冻剂及其制备方法与应用，抗冻剂的制备方法包括以下步骤：1)将NaOH及尿素加入至水中，得到NaOH/尿素溶液；2)将羟乙基纤维素及羧化壳聚糖加入至NaOH/尿素溶液中，得到纤维素/壳聚糖溶液；将聚乙烯醇及甲壳素加入至NaOH/尿素溶液中，得到聚乙烯醇/甲壳素溶液；3)将纤维素/壳聚糖溶液与聚乙烯醇/甲壳素溶液混合均匀并去除气泡，即得到响应型混凝土抗冻剂；应用时，将响应型混凝土抗冻剂加入至混凝土拌合物中，响应型混凝土抗冻剂的掺量为胶凝材料质量的2‑10％。与现有技术相比，本发明能够有效降低混凝土的冻融损伤，提高混凝土材料在温度交变条件下的服役寿命。
Responsive concrete antifreeze agent as well as preparation method and application thereof
一种响应型混凝土抗冻剂及其制备方法与应用
WU KAI (Autor:in) / HAN HAO (Autor:in) / LONG JIANGFENG (Autor:in) / XU LINGLIN (Autor:in) / SUN DANDAN (Autor:in) / YANG ZHENGHONG (Autor:in)
25.12.2020
Patent
Elektronische Ressource
Chinesisch
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