Magnesium phosphate cement recycled aggregate structure concrete and preparation method thereof

• Main Authors: YANGJIANMING, YINHONGYU, SUNSHUAI, ZHIZHENGDONG, XUNYONG
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2014
• 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 magnesium phosphate cement recycled aggregate structure concrete and a preparation method thereof. The magnesium phosphate cement recycled aggregate structure concrete comprises the following components by weight percent: 12-30% of magnesium oxide, 8-20% of phosphate, 2-10% of composite retarder, 5-15% of admixture, 5-20% of recycled fine aggregate, 5-30% of recycled coarse aggregate, 0-10% of natural fine aggregate, 0-15% of natural coarse aggregate, and the balance being water. High early strength, small shrinkage rate, strong adhesive property and good corrosion resistance of the concrete are ensured by the magnesium phosphate cement; stable growth of the strength of the concrete is ensured by the admixture, and the durability and the volume stability are improved. The magnesium phosphate cement recycled aggregate structure concrete has the beneficial effects that the concrete material is applicable to the structure concrete and high-performance recycled aggregate concrete, can be a