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A platform for research: civil engineering, architecture and urbanism
Method for preparing concrete from industrial residue fine aggregate
The invention discloses a method for preparing concrete from industrial residue fine aggregate. The method comprises the following steps: S1, mixing cement with water to form cement paste; S2, addingcoarse aggregate, fine aggregate and river sand into the cement paste obtained in the step S1, and carrying out uniform stirring and mixing; S3, adding industrial residues and silica fume into the paste uniformly mixed in S2, and carrying out uniform stirring and mixing; and S4, uniformly mixing an auxiliary agent, a polycarboxylate superplasticizer and a balancing amount of water, then adding theobtained mixture into the paste uniformly mixed in the S3, and carrying out uniform tirring and mixing to obtain concrete. A preparation method of the polycarboxylate superplasticizer comprises the following steps: (1) mixing maleic anhydride with deionized water to obtain a solution A; (2) mixing hydroxypropyl acrylate, isopentenyl polyoxyethylene ether, sodium methallyl sulfonate and deionizedwater to obtain a solution B; and (3) dropwise adding the solution B into the solution A, cnduccting reacting at a constant temperature, and regulating a pH value to be 7 by using NaOH to obtain the ether polycarboxylate superplasticizer. According to the method, the strength of concrete is improved, and problem in recycling of industrial residues are solved.
本发明公开了一种工业废渣微细骨料配置混凝土方法，其方法步骤如下：S1：将水泥与水混合，形成水泥浆；S2：将粗骨料、细骨料、河砂加入S1水泥浆中并搅拌混匀；S3：将工业废渣、硅灰加入S2中混匀后的浆料中并搅拌混匀；S4：将助剂、聚羧酸减水剂和余量的水混匀后再加入S3中混匀后的浆料中并搅拌混匀，得混凝土；聚羧酸减水剂制备的方法为：(1)将马来酸酐和去离子水混合，得溶液A；(2)将丙烯酸羟丙酯、异戊烯基聚氧乙烯醚、甲基丙烯磺酸钠与去离子水混合，得溶液B；(3)将溶液B滴加到溶液A中，恒温反应，并用NaOH调节至中性得醚类聚羧酸减水剂。本发明提高了混凝土的强度，解决了工业废渣再利用的问题。
Method for preparing concrete from industrial residue fine aggregate
The invention discloses a method for preparing concrete from industrial residue fine aggregate. The method comprises the following steps: S1, mixing cement with water to form cement paste; S2, addingcoarse aggregate, fine aggregate and river sand into the cement paste obtained in the step S1, and carrying out uniform stirring and mixing; S3, adding industrial residues and silica fume into the paste uniformly mixed in S2, and carrying out uniform stirring and mixing; and S4, uniformly mixing an auxiliary agent, a polycarboxylate superplasticizer and a balancing amount of water, then adding theobtained mixture into the paste uniformly mixed in the S3, and carrying out uniform tirring and mixing to obtain concrete. A preparation method of the polycarboxylate superplasticizer comprises the following steps: (1) mixing maleic anhydride with deionized water to obtain a solution A; (2) mixing hydroxypropyl acrylate, isopentenyl polyoxyethylene ether, sodium methallyl sulfonate and deionizedwater to obtain a solution B; and (3) dropwise adding the solution B into the solution A, cnduccting reacting at a constant temperature, and regulating a pH value to be 7 by using NaOH to obtain the ether polycarboxylate superplasticizer. According to the method, the strength of concrete is improved, and problem in recycling of industrial residues are solved.
本发明公开了一种工业废渣微细骨料配置混凝土方法，其方法步骤如下：S1：将水泥与水混合，形成水泥浆；S2：将粗骨料、细骨料、河砂加入S1水泥浆中并搅拌混匀；S3：将工业废渣、硅灰加入S2中混匀后的浆料中并搅拌混匀；S4：将助剂、聚羧酸减水剂和余量的水混匀后再加入S3中混匀后的浆料中并搅拌混匀，得混凝土；聚羧酸减水剂制备的方法为：(1)将马来酸酐和去离子水混合，得溶液A；(2)将丙烯酸羟丙酯、异戊烯基聚氧乙烯醚、甲基丙烯磺酸钠与去离子水混合，得溶液B；(3)将溶液B滴加到溶液A中，恒温反应，并用NaOH调节至中性得醚类聚羧酸减水剂。本发明提高了混凝土的强度，解决了工业废渣再利用的问题。
Method for preparing concrete from industrial residue fine aggregate
工业废渣微细骨料配置混凝土方法
LI GUOHONG (author) / JIA CUIYING (author) / LIU CHAO (author) / LI PEI (author) / YE TING (author) / LUO JUN (author) / ZHANG DEXIN (author) / CHEN YUANLONG (author)
2020-08-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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