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A platform for research: civil engineering, architecture and urbanism
Green concrete with high chloride ion curing capacity
The invention belongs to the technical field of concrete preparation, and particularly relates to green concrete with high chloride ion curing capacity and a preparation method of the green concrete.The green concrete comprises the following raw materials: 460 to 550 parts of a cementitious material; 175 to 200 parts of water; 1,000 to 1,100 parts of coarse aggregate; 650 to 750 parts of fine aggregate; and 3 to 6 parts of a polycarboxylic acid water reducing agent. According to the green concrete disclosed by the invention, the curing capacity of chloride ions is improved; the service life of the concrete is prolonged; Ca(OH)2 soaking pretreatment is carried out on the recycled aggregate; a calcium hydroxide solution enters pores of the recycled fine aggregate and reacts with CO2 in airto generate a large amount of calcium carbonate; according to the method, the recycled fine aggregate is used as a raw material, so that strength support can be provided, the hardened slurry containedin the recycled fine aggregate can be prevented from being further carbonized by external CO2, hydration products in the recycled fine aggregate are protected, and the curing effect of concrete chloride ions is improved.
本发明属于技术混凝土制备领域，尤其涉及一种具有高氯离子固化能力的绿色混凝土及其制备方法，混凝土原料包括胶凝材料460‑550份；水175‑200份；粗骨料1000‑1100份；细骨料650‑750份；聚羧酸减水剂3‑6份。本发明的绿色混凝土提高了氯离子的固化能力，延长了混凝土的使用寿命，并且通过对再生骨料的Ca(OH)浸泡预处理，氢氧化钙溶液会进入再生细骨料孔隙内部与空气中的CO反应生成大量碳酸钙，既能提供强度支撑，又能防止外部CO对再生细骨料所含硬化浆体的进一步碳化，对再生细骨料中的水化产物进行保护,从而增加了混凝土氯离子的固化效果。
Green concrete with high chloride ion curing capacity
The invention belongs to the technical field of concrete preparation, and particularly relates to green concrete with high chloride ion curing capacity and a preparation method of the green concrete.The green concrete comprises the following raw materials: 460 to 550 parts of a cementitious material; 175 to 200 parts of water; 1,000 to 1,100 parts of coarse aggregate; 650 to 750 parts of fine aggregate; and 3 to 6 parts of a polycarboxylic acid water reducing agent. According to the green concrete disclosed by the invention, the curing capacity of chloride ions is improved; the service life of the concrete is prolonged; Ca(OH)2 soaking pretreatment is carried out on the recycled aggregate; a calcium hydroxide solution enters pores of the recycled fine aggregate and reacts with CO2 in airto generate a large amount of calcium carbonate; according to the method, the recycled fine aggregate is used as a raw material, so that strength support can be provided, the hardened slurry containedin the recycled fine aggregate can be prevented from being further carbonized by external CO2, hydration products in the recycled fine aggregate are protected, and the curing effect of concrete chloride ions is improved.
本发明属于技术混凝土制备领域，尤其涉及一种具有高氯离子固化能力的绿色混凝土及其制备方法，混凝土原料包括胶凝材料460‑550份；水175‑200份；粗骨料1000‑1100份；细骨料650‑750份；聚羧酸减水剂3‑6份。本发明的绿色混凝土提高了氯离子的固化能力，延长了混凝土的使用寿命，并且通过对再生骨料的Ca(OH)浸泡预处理，氢氧化钙溶液会进入再生细骨料孔隙内部与空气中的CO反应生成大量碳酸钙，既能提供强度支撑，又能防止外部CO对再生细骨料所含硬化浆体的进一步碳化，对再生细骨料中的水化产物进行保护,从而增加了混凝土氯离子的固化效果。
Green concrete with high chloride ion curing capacity
一种具有高氯离子固化能力的绿色混凝土
CHANG HONGLEI (author) / LIU JIAN (author) / CHEN FANYU (author) / LI HONGYIN (author) / XIE QUANYI (author) / QU MINGYUE (author) / WANG JIANHONG (author) / XU XIAOBIN (author)
2020-09-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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