A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Recycled concrete, and preparation method and application thereof
The invention provides a preparation method of recycled concrete. The preparation method comprises the following steps: 1, pretreating waste concrete; 2, acidifying the waste concrete; 3, modifying the waste concrete: adding the acidified product obtained in step 2 into a polyvinylpyrrolidone solution under a 40-DEG C water bath stirring condition, and completely dispersing and cooling the acidified product to room temperature to obtain a suspension I, adding a mixed solution of ferrous chloride and ferric chloride in a molar ratio of 1:2 into the polyvinylpyrrolidone solution, slowly dropwiseadding a trihydroxymethyl aminomethane solution under the condition of 90-DEG C water bath stirring, and obtaining a solution II after drop-by-drop adding is finished; dropwise adding the suspensionI into the solution II, and cooling to 40 DEG C after a reaction is finished so as to obtain a solution III; and 4, preparing the recycled concrete. The recycled concrete prepared by the method has magnetism and can be applied to the technical field of magnetic therapy.
本发明提供一种再生混凝土的制备方法，包括以下步骤：步骤一，废弃混凝土的预处理；步骤二，废弃混凝土的酸化；步骤三，废弃混凝土的改性：在40度水浴搅拌条件下，将步骤二得到的酸化产物加入聚乙烯吡咯烷酮溶液中，待酸化产物完全分散冷却至室温后得到悬浊液一；将摩尔比为1:2的氯化亚铁和氯化铁混合溶液加入聚乙烯吡咯烷酮溶液中，在90度水浴搅拌条件下，缓慢滴加三羟甲基氨基甲烷溶液，滴加完毕后得到溶液二；将悬浊液一滴加至溶液二中，反应结束后冷却至40度后得到溶液三；步骤四，再生混凝土制备；采用该方法制备出再生混凝土具有磁性，可以应用于磁疗技术领域。
Recycled concrete, and preparation method and application thereof
The invention provides a preparation method of recycled concrete. The preparation method comprises the following steps: 1, pretreating waste concrete; 2, acidifying the waste concrete; 3, modifying the waste concrete: adding the acidified product obtained in step 2 into a polyvinylpyrrolidone solution under a 40-DEG C water bath stirring condition, and completely dispersing and cooling the acidified product to room temperature to obtain a suspension I, adding a mixed solution of ferrous chloride and ferric chloride in a molar ratio of 1:2 into the polyvinylpyrrolidone solution, slowly dropwiseadding a trihydroxymethyl aminomethane solution under the condition of 90-DEG C water bath stirring, and obtaining a solution II after drop-by-drop adding is finished; dropwise adding the suspensionI into the solution II, and cooling to 40 DEG C after a reaction is finished so as to obtain a solution III; and 4, preparing the recycled concrete. The recycled concrete prepared by the method has magnetism and can be applied to the technical field of magnetic therapy.
本发明提供一种再生混凝土的制备方法，包括以下步骤：步骤一，废弃混凝土的预处理；步骤二，废弃混凝土的酸化；步骤三，废弃混凝土的改性：在40度水浴搅拌条件下，将步骤二得到的酸化产物加入聚乙烯吡咯烷酮溶液中，待酸化产物完全分散冷却至室温后得到悬浊液一；将摩尔比为1:2的氯化亚铁和氯化铁混合溶液加入聚乙烯吡咯烷酮溶液中，在90度水浴搅拌条件下，缓慢滴加三羟甲基氨基甲烷溶液，滴加完毕后得到溶液二；将悬浊液一滴加至溶液二中，反应结束后冷却至40度后得到溶液三；步骤四，再生混凝土制备；采用该方法制备出再生混凝土具有磁性，可以应用于磁疗技术领域。
Recycled concrete, and preparation method and application thereof
一种再生混凝土、制备方法及其应用
ZHANG BIN (author) / ZHANG YANJUN (author)
2020-06-02
Patent
Electronic Resource
Chinese
Recycled concrete, recycled concrete prefabricated part and preparation method thereof
| European Patent Office | 2021