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A platform for research: civil engineering, architecture and urbanism
Ultra-large-volume concrete
The invention belongs to the field of concrete, and particularly relates to ultra-large-volume concrete. The ultra-large-volume concrete is prepared from the following components in parts by weight: 300 to 320 parts of cement, 70 to 80 parts of fly ash, 800 to 820 parts of sand, 150 to 250 parts of gravel with a particle size of 5 to 10 mm, 800 to 900 parts of gravel with a particle size of 10 to 25 mm, 50 to 60 parts of stone powder, 12 to 13 parts of an additive and 145 to 160 parts of water. According to the invention, the stone powder and the additive are added into the admixture; 50-60 parts of the stone powder is introduced, so the concrete has better workability; and in addition, a certain amount of a cementing material is reduced, so hydration heat is reduced, and the problems of cracks and deformation of the ultra-large-volume concrete are solved; and with to the additive, the initial setting time of the concrete is prolonged to 24 hours or more, the hydration heat of the super-large concrete in unit time is reduced, and temperature cracks and deformation of the concrete are reduced.
本发明属于混凝土领域，具体涉及一种超大体积混凝土。本超大体积混凝土组成包括：按重量份数计，水泥300～320份，粉煤灰70～80份，砂800～820份，粒径5～10mm的碎石为150～250份，粒径10～25mm的碎石为800～900份，石粉50～60份，外加剂12～13份和水145～160份；本发明掺合料中增加了石粉和外加剂；所述石粉50～60份的引入，使混凝土具有更好的和易性，此外减少了一定量的胶凝材料，从而减小水化热量，降低了超大体积混凝土出现裂缝、变形的问题；所述外加剂，使混凝土的初凝时间延长至24h以上，降低了超大混凝土单位时间水化热量，减少了混凝土的温度裂缝和变形。
Ultra-large-volume concrete
The invention belongs to the field of concrete, and particularly relates to ultra-large-volume concrete. The ultra-large-volume concrete is prepared from the following components in parts by weight: 300 to 320 parts of cement, 70 to 80 parts of fly ash, 800 to 820 parts of sand, 150 to 250 parts of gravel with a particle size of 5 to 10 mm, 800 to 900 parts of gravel with a particle size of 10 to 25 mm, 50 to 60 parts of stone powder, 12 to 13 parts of an additive and 145 to 160 parts of water. According to the invention, the stone powder and the additive are added into the admixture; 50-60 parts of the stone powder is introduced, so the concrete has better workability; and in addition, a certain amount of a cementing material is reduced, so hydration heat is reduced, and the problems of cracks and deformation of the ultra-large-volume concrete are solved; and with to the additive, the initial setting time of the concrete is prolonged to 24 hours or more, the hydration heat of the super-large concrete in unit time is reduced, and temperature cracks and deformation of the concrete are reduced.
本发明属于混凝土领域，具体涉及一种超大体积混凝土。本超大体积混凝土组成包括：按重量份数计，水泥300～320份，粉煤灰70～80份，砂800～820份，粒径5～10mm的碎石为150～250份，粒径10～25mm的碎石为800～900份，石粉50～60份，外加剂12～13份和水145～160份；本发明掺合料中增加了石粉和外加剂；所述石粉50～60份的引入，使混凝土具有更好的和易性，此外减少了一定量的胶凝材料，从而减小水化热量，降低了超大体积混凝土出现裂缝、变形的问题；所述外加剂，使混凝土的初凝时间延长至24h以上，降低了超大混凝土单位时间水化热量，减少了混凝土的温度裂缝和变形。
Ultra-large-volume concrete
超大体积混凝土
WEN JUN (author) / TU XIAOZHU (author) / LI RAN (author)
2022-01-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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