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A platform for research: civil engineering, architecture and urbanism
Phosphogypsum concrete-filled steel tube and preparation method thereof
The invention relates to a phosphogypsum concrete-filled steel tube and a preparation method thereof. The phosphogypsum concrete-filled steel tube is prepared from the following components in parts byweight: 420 to 500 parts of phosphogypsum cement, 100 to 200 parts of pottery sand, 480 to 550 parts of river sand, 500 to 700 parts of phosphogypsum coarse aggregate, 2.1 to 3.5 parts of water reducing agent and 140 to 170 parts of water. The phosphogypsum concrete is filled in the steel tube, so that the disadvantages of the phosphogypsum concrete are converted into advantages. The micro-expansibility of the concrete comes from a hydration reaction of phosphogypsum cement, an expanding agent does not need to be doped, the phosphogypsum concrete is longer than ordinary Portland cement in setting time, and the setting time of the prepared concrete is matched with a concrete-filled steel tube pumping construction process, the steel pipe serves as an outer wrapping layer of the concrete, the phosphogypsum concrete can be protected against corrosion of CO2, and the overall carbonization resistance of the phosphogypsum concrete-filled steel tube is guaranteed.
本发明涉及一种磷石膏钢管混凝土及其制备方法。所述磷石膏钢管混凝土包括重量份计的以下组分：磷石膏水泥420‑500份，陶砂100‑200份，江砂480‑550份，磷石膏粗集料500‑700份，减水剂2.1‑3.5份，水140‑170份。磷石膏混凝土内填于钢管中，将磷石膏混凝土的劣势转化为优势。混凝土的微膨胀性来源于磷石膏水泥自身的水化反应，无需掺入膨胀剂；磷石膏水泥较普通硅酸盐水泥凝结时间长，配制的混凝土凝结时间与钢管混凝土泵送施工工艺匹配；钢管作为混凝土的外包裹层，能保护磷石膏混凝土免受CO的侵蚀，保证了磷石膏钢管混凝土整体抗碳化性能。
Phosphogypsum concrete-filled steel tube and preparation method thereof
The invention relates to a phosphogypsum concrete-filled steel tube and a preparation method thereof. The phosphogypsum concrete-filled steel tube is prepared from the following components in parts byweight: 420 to 500 parts of phosphogypsum cement, 100 to 200 parts of pottery sand, 480 to 550 parts of river sand, 500 to 700 parts of phosphogypsum coarse aggregate, 2.1 to 3.5 parts of water reducing agent and 140 to 170 parts of water. The phosphogypsum concrete is filled in the steel tube, so that the disadvantages of the phosphogypsum concrete are converted into advantages. The micro-expansibility of the concrete comes from a hydration reaction of phosphogypsum cement, an expanding agent does not need to be doped, the phosphogypsum concrete is longer than ordinary Portland cement in setting time, and the setting time of the prepared concrete is matched with a concrete-filled steel tube pumping construction process, the steel pipe serves as an outer wrapping layer of the concrete, the phosphogypsum concrete can be protected against corrosion of CO2, and the overall carbonization resistance of the phosphogypsum concrete-filled steel tube is guaranteed.
本发明涉及一种磷石膏钢管混凝土及其制备方法。所述磷石膏钢管混凝土包括重量份计的以下组分：磷石膏水泥420‑500份，陶砂100‑200份，江砂480‑550份，磷石膏粗集料500‑700份，减水剂2.1‑3.5份，水140‑170份。磷石膏混凝土内填于钢管中，将磷石膏混凝土的劣势转化为优势。混凝土的微膨胀性来源于磷石膏水泥自身的水化反应，无需掺入膨胀剂；磷石膏水泥较普通硅酸盐水泥凝结时间长，配制的混凝土凝结时间与钢管混凝土泵送施工工艺匹配；钢管作为混凝土的外包裹层，能保护磷石膏混凝土免受CO的侵蚀，保证了磷石膏钢管混凝土整体抗碳化性能。
Phosphogypsum concrete-filled steel tube and preparation method thereof
一种磷石膏钢管混凝土及其制备方法
LI GUOGANG (author) / YIN SUHONG (author) / LI FANGXIAN (author)
2020-05-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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