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A platform for research: civil engineering, architecture and urbanism
High-strength sulfate-corrosion-resistant concrete and preparation method thereof
The invention relates to the technical field of concrete, and discloses high-strength sulfate-corrosion-resistant concrete and a preparation method thereof. The concrete is prepared from the followingcomponents in percentage by mass: 18-22 percent of Portland cement, 6-10 percent of modified basalt fiber, 5-8 percent of silicon powder, 15-20 percent of river sand, 20-25 percent of granite brokenstone, 0.5-1.0 percent of sodium nitrite antifreezing agent, 1.0-1.5 percent of polycarboxylic acid retarding water reducer and the balance of water. The preparation method of the concrete comprises the following steps of firstly, adding the polycarboxylic acid retarding water reducer into water, stirring and dissolving to prepare a polycarboxylic acid retarding water reducer aqueous solution, adding portland cement, river sand and granite broken stone into a stirrer to be subjected to dry mixing to obtain a dry mixed material, pouring the polycarboxylic acid retarding water reducer aqueous solution into the dry-mixed material for wet mixing, then adding the modified basalt fiber, the silicon powder and the sodium nitrite, and uniformly stirring to obtain the high-strength sulfate-corrosion-resistant concrete. The prepared concrete has good mechanical properties and sulfate corrosion resistance at the same time.
本发明涉及混凝土技术领域，公开了一种高强度耐硫酸盐腐蚀混凝土及其制备方法。包括按质量百分比配比的下述组分：硅酸盐水泥18‑22%，改性玄武岩纤维6‑10%，硅粉5‑8%，河砂15‑20%，花岗岩破碎石20‑25%，亚硝酸钠防冻剂0.5‑1.0%，聚羧酸缓凝减水剂1.0‑1.5%，余量为水。混凝土制备方法为先将聚羧酸缓凝减水剂加入水中搅拌溶解配制成聚羧酸缓凝减水剂水溶液；将硅酸盐水泥、河砂和花岗岩破碎石加入搅拌机中干拌得到干拌料；将聚羧酸缓凝减水剂水溶液倒入干拌料中湿拌，然后加入改性玄武岩纤维、硅粉和亚硝酸钠，搅拌均匀即得。本发明制备得到的混凝土同时具有良好的力学性能和耐硫酸盐腐蚀性能。
High-strength sulfate-corrosion-resistant concrete and preparation method thereof
The invention relates to the technical field of concrete, and discloses high-strength sulfate-corrosion-resistant concrete and a preparation method thereof. The concrete is prepared from the followingcomponents in percentage by mass: 18-22 percent of Portland cement, 6-10 percent of modified basalt fiber, 5-8 percent of silicon powder, 15-20 percent of river sand, 20-25 percent of granite brokenstone, 0.5-1.0 percent of sodium nitrite antifreezing agent, 1.0-1.5 percent of polycarboxylic acid retarding water reducer and the balance of water. The preparation method of the concrete comprises the following steps of firstly, adding the polycarboxylic acid retarding water reducer into water, stirring and dissolving to prepare a polycarboxylic acid retarding water reducer aqueous solution, adding portland cement, river sand and granite broken stone into a stirrer to be subjected to dry mixing to obtain a dry mixed material, pouring the polycarboxylic acid retarding water reducer aqueous solution into the dry-mixed material for wet mixing, then adding the modified basalt fiber, the silicon powder and the sodium nitrite, and uniformly stirring to obtain the high-strength sulfate-corrosion-resistant concrete. The prepared concrete has good mechanical properties and sulfate corrosion resistance at the same time.
本发明涉及混凝土技术领域，公开了一种高强度耐硫酸盐腐蚀混凝土及其制备方法。包括按质量百分比配比的下述组分：硅酸盐水泥18‑22%，改性玄武岩纤维6‑10%，硅粉5‑8%，河砂15‑20%，花岗岩破碎石20‑25%，亚硝酸钠防冻剂0.5‑1.0%，聚羧酸缓凝减水剂1.0‑1.5%，余量为水。混凝土制备方法为先将聚羧酸缓凝减水剂加入水中搅拌溶解配制成聚羧酸缓凝减水剂水溶液；将硅酸盐水泥、河砂和花岗岩破碎石加入搅拌机中干拌得到干拌料；将聚羧酸缓凝减水剂水溶液倒入干拌料中湿拌，然后加入改性玄武岩纤维、硅粉和亚硝酸钠，搅拌均匀即得。本发明制备得到的混凝土同时具有良好的力学性能和耐硫酸盐腐蚀性能。
High-strength sulfate-corrosion-resistant concrete and preparation method thereof
一种高强度耐硫酸盐腐蚀混凝土及其制备方法
QIN HUANHUAN (author)
2021-01-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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