Method for preparing nano modified concrete complex mineral blending material

• Main Authors: QIAN KUANGLIANG, MENG TAO, ZHAN SHULIN, QIAN XIAOQIAN, CHENG ZHANLIAN, DING XIAOFU
• Format: Patent
• Language: Chinese; English
• Published: 06.08.2008
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

The invention discloses a method for preparing composite minerals admixture of a nano modification concrete, which comprises the following steps: a nano calcium carbonate emulsion is generated by a carbonation reactor. After carrying out a dewater treatment, the nano calcium carbonate emulsion forms a nano calcium carbonate paste with a water content of 40 percent to 60 percent. The mineral powder and the nano calcium carbonate paste are mixed in a weight ratio of 2 to 4. The nano modifier is then obtained after the mixture is dried and grinded. The composite minerals admixture and nano modifier are mixed together in a weight ratio of 1 to 3 and are then grinded for 0.5 to 1 hours. The method for preparing composite minerals admixture of a nano modification concrete has a simple preparation process. The prepared mixture can be incorporated into the concrete for using. The composite additive effect between the nano calcium carbonate paste and the active mineral powder can solve the problem that the nano calciu