Preparation method of porous calcium carbonate microspheres capable of loading regenerant to delay asphalt aging

• Main Authors: DENG WEILIN, HUANG CHONGQIU, HUANG WENKE, ZENG XINGBIN
• Format: Patent
• Language: Chinese; English
• Published: 14.10.2022
• Subjects: CHEMISTRY; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; INORGANIC CHEMISTRY; METALLURGY

The invention relates to the field of road asphalt aging resistance, and discloses a preparation method of porous calcium carbonate microspheres capable of loading a regenerant to delay asphalt aging, which comprises the following steps: 1, taking out sodium carbonate, calcium chloride, polyacrylic acid and sodium polystyrenesulfonate, adding deionized water, and uniformly stirring; preparing a sodium carbonate solution, a calcium chloride solution, 1-5g/L of a polyacrylic acid solution and a sodium polystyrenesulfonate solution L; 2, mixing a sodium carbonate solution with a polyacrylic acid solution to obtain a solution A, and mixing a calcium chloride solution with the polyacrylic acid solution to obtain a solution B; 3, pouring a sodium polystyrenesulfonate solution into the solution A, and then adding the solution B to obtain a solution C; 4, the solution C is subjected to a heat preservation stirring reaction, the heat preservation temperature of the heat preservation stirring reaction ranges from 60 DE