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A platform for research: civil engineering, architecture and urbanism
High-strength concrete and construction method thereof
The invention relates to the technical field of concrete, and particularly discloses high-strength concrete and a construction method thereof. The high-strength concrete is obtained after a concrete mixture is subjected to mold entering and curing, and the concrete mixture is prepared from the following components in parts by weight: 160 to 165 parts of water, 370 to 380 parts of Portland cement, 88 to 92 parts of mineral admixture, 58 to 62 parts of tetra calcium aluminoferrite powder, 720 to 730 parts of medium sand, 980 to 1020 parts of gravel and 10.4 to 18.9 parts of polycarboxylate superplasticizer. Portland cement is partially replaced by tetra calcium aluminoferrite powder, so that the content of a gel phase and ettringite is increased. Under the combined action of the gel phase and ettringite, the shrinkage resistance of the high-strength concrete is enhanced, and the cracking phenomenon is better controlled, so that a lower compression-bending ratio is obtained, the toughness of the concrete is improved, and long-term service of the high-strength concrete is facilitated.
本申请涉及混凝土技术领域，具体公开了一种高强混凝土及其施工方法。所述高强混凝土由混凝土拌和物经过入模养护后得到，所述混凝土拌和物包括如下重量份的组分：水160‑165份，硅酸盐水泥370‑380份，矿物掺合料88‑92份，铁铝酸四钙粉料58‑62份，中砂720‑730份，碎石980‑1020份，聚羧酸减水剂10.4‑18.9份。本申请通过使用铁铝酸四钙粉料部分代替硅酸盐水泥，使得凝胶相和钙矾石的含量上升。在凝胶相和钙矾石的共同作用下，高强混凝土的抗收缩性能增强，开裂现象得到了更好的控制，从而得到了更低的压折比，改善了混凝土的韧性，有利于高强混凝土的长期服役。
High-strength concrete and construction method thereof
The invention relates to the technical field of concrete, and particularly discloses high-strength concrete and a construction method thereof. The high-strength concrete is obtained after a concrete mixture is subjected to mold entering and curing, and the concrete mixture is prepared from the following components in parts by weight: 160 to 165 parts of water, 370 to 380 parts of Portland cement, 88 to 92 parts of mineral admixture, 58 to 62 parts of tetra calcium aluminoferrite powder, 720 to 730 parts of medium sand, 980 to 1020 parts of gravel and 10.4 to 18.9 parts of polycarboxylate superplasticizer. Portland cement is partially replaced by tetra calcium aluminoferrite powder, so that the content of a gel phase and ettringite is increased. Under the combined action of the gel phase and ettringite, the shrinkage resistance of the high-strength concrete is enhanced, and the cracking phenomenon is better controlled, so that a lower compression-bending ratio is obtained, the toughness of the concrete is improved, and long-term service of the high-strength concrete is facilitated.
本申请涉及混凝土技术领域，具体公开了一种高强混凝土及其施工方法。所述高强混凝土由混凝土拌和物经过入模养护后得到，所述混凝土拌和物包括如下重量份的组分：水160‑165份，硅酸盐水泥370‑380份，矿物掺合料88‑92份，铁铝酸四钙粉料58‑62份，中砂720‑730份，碎石980‑1020份，聚羧酸减水剂10.4‑18.9份。本申请通过使用铁铝酸四钙粉料部分代替硅酸盐水泥，使得凝胶相和钙矾石的含量上升。在凝胶相和钙矾石的共同作用下，高强混凝土的抗收缩性能增强，开裂现象得到了更好的控制，从而得到了更低的压折比，改善了混凝土的韧性，有利于高强混凝土的长期服役。
High-strength concrete and construction method thereof
一种高强混凝土及其施工方法
ZHONG XIAOSHENG (author)
2023-10-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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