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A platform for research: civil engineering, architecture and urbanism
Preparation method of rapidly carbonized seawater sea sand concrete
The invention relates to a preparation method of quickly carbonized seawater and sea sand concrete, which comprises the following steps: mixing high-porosity coarse aggregate, cement, sea sand and seawater, pouring and wrapping the mixture outside an FRP (Fiber Reinforced Plastic) rib, making a prefabricated part or pouring in place according to the use condition, and forming a protective layer through quick carbonization, thereby improving the performance and durability of the FRP rib-seawater and sea sand recycled concrete. Compared with the prior art, the sea sand is used as the fine aggregate, the recycled coarse aggregate or the coral coarse aggregate is selected as the coarse aggregate, the undisturbed seawater is selected as the mixing water, the carbonization speed and the carbonization depth of the concrete are improved by using the high-porosity and large-aperture coarse aggregate, and the solubility of calcium hydroxide is improved by using chlorine salt in the seawater sea sand; therefore, the alkalinity of the concrete is improved, the carbonization degree of the concrete is improved, and the performance of the concrete and the durability of the FRP rib are improved.
本发明涉及一种快速碳化的海水海砂混凝土的制备方法，包括：将高孔隙率粗骨料、水泥、海砂、海水混合，并浇注包裹于FRP筋外，根据使用情况做成预制构件或现场浇筑，通过快速碳化，形成保护层，从而提高FRP筋‑海水海砂再生混凝土性能及耐久性。与现有技术相比，本发明以海砂为细骨料，选用再生粗骨料或者珊瑚粗骨料为粗骨料，选用原状海水为拌合水，利用高孔隙率、大孔径粗骨料提高混凝土碳化速度和碳化深度，利用海水海砂中的氯盐提高氢氧化钙的溶解度，从而提升混凝土碱度，提高混凝土的碳化程度，进而有利于提高混凝土的性能以及FRP筋的耐久性。
Preparation method of rapidly carbonized seawater sea sand concrete
The invention relates to a preparation method of quickly carbonized seawater and sea sand concrete, which comprises the following steps: mixing high-porosity coarse aggregate, cement, sea sand and seawater, pouring and wrapping the mixture outside an FRP (Fiber Reinforced Plastic) rib, making a prefabricated part or pouring in place according to the use condition, and forming a protective layer through quick carbonization, thereby improving the performance and durability of the FRP rib-seawater and sea sand recycled concrete. Compared with the prior art, the sea sand is used as the fine aggregate, the recycled coarse aggregate or the coral coarse aggregate is selected as the coarse aggregate, the undisturbed seawater is selected as the mixing water, the carbonization speed and the carbonization depth of the concrete are improved by using the high-porosity and large-aperture coarse aggregate, and the solubility of calcium hydroxide is improved by using chlorine salt in the seawater sea sand; therefore, the alkalinity of the concrete is improved, the carbonization degree of the concrete is improved, and the performance of the concrete and the durability of the FRP rib are improved.
本发明涉及一种快速碳化的海水海砂混凝土的制备方法，包括：将高孔隙率粗骨料、水泥、海砂、海水混合，并浇注包裹于FRP筋外，根据使用情况做成预制构件或现场浇筑，通过快速碳化，形成保护层，从而提高FRP筋‑海水海砂再生混凝土性能及耐久性。与现有技术相比，本发明以海砂为细骨料，选用再生粗骨料或者珊瑚粗骨料为粗骨料，选用原状海水为拌合水，利用高孔隙率、大孔径粗骨料提高混凝土碳化速度和碳化深度，利用海水海砂中的氯盐提高氢氧化钙的溶解度，从而提升混凝土碱度，提高混凝土的碳化程度，进而有利于提高混凝土的性能以及FRP筋的耐久性。
Preparation method of rapidly carbonized seawater sea sand concrete
一种快速碳化的海水海砂混凝土的制备方法
XIAO JIANZHUANG (author) / HU XIAOLONG (author) / ZHANG KAIJIAN (author) / SHEN JIANYU (author) / WANG TIANCHAO (author)
2022-11-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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