Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Basic magnesium sulfate cement and preparation method thereof
The invention discloses basic magnesium sulfate cement which comprises the following components in parts by mass: 100 parts of active magnesium oxide powder, 30-100 parts of a magnesium sulfate solution, 0.01-0.05 part of an additive and 0.1-5 parts of a magnesium oxysulfate crystal nucleating agent, the magnesium sulfate solution is an aqueous solution of crystallized magnesium sulfate, and the mass fraction of the magnesium sulfate solution is 15-20%; the magnesium oxysulfate crystal nucleating agent is prepared by the following method: step 1, mixing 50-100 parts by mass of light calcined magnesite powder with the active MgO mass fraction of 55%-85%, 70-300 parts by mass of a magnesium sulfate solution with the active MgO mass fraction of 10%-25% and 0.01-0.05 part by mass of phosphoricacid; and 2, putting the paste obtained in the step 1 into a sealed bag, curing at 20+/-3 DEG C for 28 days to promote hardening, and finally grinding the hardened sample into powder through ball milling to obtain the actual magnesium oxysulfide crystal nucleating agent. The basic magnesium sulfate cement has the advantages of short setting time, early strength, high strength and the like.
本发明公开了一种碱式硫酸镁水泥，包括以下组份：100质量份的活性氧化镁粉、30～100质量份的硫酸镁溶液、0.01～0.05质量份的外加剂和0.1～5质量份的硫氧化镁晶体成核剂，其中硫酸镁溶液为结晶硫酸镁的水溶液，其质量分数为15‑20％；所述硫氧化镁晶体成核剂采用以下方法制备：步骤一、将50～100质量份活性MgO质量分数为55％～85％的轻烧菱镁粉、70～300质量份质量分数为10％～25％的硫酸镁溶液、0.01～0.05质量份磷酸混合；步骤二、步骤一所得糊状物，放入密封袋中，并在20±3℃下固化28天，以促进硬化，最后通过球磨将硬化后的样品研磨成粉得到事实硫氧化镁晶体成核剂。本发明具有凝结时间短、早强高强等优点。
Basic magnesium sulfate cement and preparation method thereof
The invention discloses basic magnesium sulfate cement which comprises the following components in parts by mass: 100 parts of active magnesium oxide powder, 30-100 parts of a magnesium sulfate solution, 0.01-0.05 part of an additive and 0.1-5 parts of a magnesium oxysulfate crystal nucleating agent, the magnesium sulfate solution is an aqueous solution of crystallized magnesium sulfate, and the mass fraction of the magnesium sulfate solution is 15-20%; the magnesium oxysulfate crystal nucleating agent is prepared by the following method: step 1, mixing 50-100 parts by mass of light calcined magnesite powder with the active MgO mass fraction of 55%-85%, 70-300 parts by mass of a magnesium sulfate solution with the active MgO mass fraction of 10%-25% and 0.01-0.05 part by mass of phosphoricacid; and 2, putting the paste obtained in the step 1 into a sealed bag, curing at 20+/-3 DEG C for 28 days to promote hardening, and finally grinding the hardened sample into powder through ball milling to obtain the actual magnesium oxysulfide crystal nucleating agent. The basic magnesium sulfate cement has the advantages of short setting time, early strength, high strength and the like.
本发明公开了一种碱式硫酸镁水泥，包括以下组份：100质量份的活性氧化镁粉、30～100质量份的硫酸镁溶液、0.01～0.05质量份的外加剂和0.1～5质量份的硫氧化镁晶体成核剂，其中硫酸镁溶液为结晶硫酸镁的水溶液，其质量分数为15‑20％；所述硫氧化镁晶体成核剂采用以下方法制备：步骤一、将50～100质量份活性MgO质量分数为55％～85％的轻烧菱镁粉、70～300质量份质量分数为10％～25％的硫酸镁溶液、0.01～0.05质量份磷酸混合；步骤二、步骤一所得糊状物，放入密封袋中，并在20±3℃下固化28天，以促进硬化，最后通过球磨将硬化后的样品研磨成粉得到事实硫氧化镁晶体成核剂。本发明具有凝结时间短、早强高强等优点。
Basic magnesium sulfate cement and preparation method thereof
一种碱式硫酸镁水泥及其制备方法
YU HONGFA (Autor:in) / WU CHENGYOU (Autor:in) / ZONG JINGPING (Autor:in) / LUO KEJIA (Autor:in) / GONG XU (Autor:in) / KOU XIHU (Autor:in) / MA HAIYAN (Autor:in)
16.03.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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