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A platform for research: civil engineering, architecture and urbanism
Chloride ion erosion resistant sea sand concrete and preparation method thereof
The invention relates to chloride ion erosion resistant sea sand concrete and a preparation method thereof. The chloride ion erosion resistant sea sand concrete comprises the following components in parts by weight: 200-250 parts of cement; 165 to 175 parts of water; 40 to 140 parts of granulated blast furnace slag powder; 40 to 100 parts of fly ash; 700 to 800 parts of pretreated sea sand; 900 to 1100 parts of coarse aggregate; 3-4 parts of an efficient water reducing agent; and 0.12 to 0.16 part of a chemical viscosity reducer. After the sea sand treated by the slightly alkaline calcium silicate hydrate gel is doped, the structural performance of the sea sand-cement-based interface layer, especially the interface layer of the area below the sea sand, is effectively improved, and chloride ions in the sea sand are prevented from being released. Besides, the superfine mineral powder and the fly ash are compounded and doped, so that the compactness of a concrete cementing material matrix is effectively improved, external chloride ions are effectively prevented from invading, the durability of a reinforced concrete structure can be effectively improved, and the green transformation requirement of traditional concrete is met.
本发明涉及一种耐氯离子侵蚀海砂混凝土及其制备方法，包括如下重量份数的各组分：水泥200～250份；水165～175份；粒化高炉矿渣粉40～140份；粉煤灰40～100份；预处理海砂700～800份；粗骨料900～1100份；高效减水剂3～4份；化学降粘剂0.12～0.16份。掺入偏碱性水化硅酸钙凝胶处理的海砂后，海砂‑水泥基界面层尤其海砂下方区域的界面层结构性能得到了有效改善，阻止了海砂中氯离子的释出。另外，超细矿粉与粉煤灰的复合掺入，有效提高了混凝土胶凝材料基质的密实程度，有效阻止了外部氯离子的侵入，可有效提高钢筋混凝土结构耐久性，顺应了传统混凝土绿色化转型需求。
Chloride ion erosion resistant sea sand concrete and preparation method thereof
The invention relates to chloride ion erosion resistant sea sand concrete and a preparation method thereof. The chloride ion erosion resistant sea sand concrete comprises the following components in parts by weight: 200-250 parts of cement; 165 to 175 parts of water; 40 to 140 parts of granulated blast furnace slag powder; 40 to 100 parts of fly ash; 700 to 800 parts of pretreated sea sand; 900 to 1100 parts of coarse aggregate; 3-4 parts of an efficient water reducing agent; and 0.12 to 0.16 part of a chemical viscosity reducer. After the sea sand treated by the slightly alkaline calcium silicate hydrate gel is doped, the structural performance of the sea sand-cement-based interface layer, especially the interface layer of the area below the sea sand, is effectively improved, and chloride ions in the sea sand are prevented from being released. Besides, the superfine mineral powder and the fly ash are compounded and doped, so that the compactness of a concrete cementing material matrix is effectively improved, external chloride ions are effectively prevented from invading, the durability of a reinforced concrete structure can be effectively improved, and the green transformation requirement of traditional concrete is met.
本发明涉及一种耐氯离子侵蚀海砂混凝土及其制备方法，包括如下重量份数的各组分：水泥200～250份；水165～175份；粒化高炉矿渣粉40～140份；粉煤灰40～100份；预处理海砂700～800份；粗骨料900～1100份；高效减水剂3～4份；化学降粘剂0.12～0.16份。掺入偏碱性水化硅酸钙凝胶处理的海砂后，海砂‑水泥基界面层尤其海砂下方区域的界面层结构性能得到了有效改善，阻止了海砂中氯离子的释出。另外，超细矿粉与粉煤灰的复合掺入，有效提高了混凝土胶凝材料基质的密实程度，有效阻止了外部氯离子的侵入，可有效提高钢筋混凝土结构耐久性，顺应了传统混凝土绿色化转型需求。
Chloride ion erosion resistant sea sand concrete and preparation method thereof
一种耐氯离子侵蚀海砂混凝土及其制备方法
WANG SHENGYI (author) / XU LIJUAN (author) / SUN FEIPENG (author) / ZHOU YUCHENG (author)
2023-09-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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