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A platform for research: civil engineering, architecture and urbanism
Low-shrinkage anti-freezing mass concrete
The invention discloses low-shrinkage anti-freezing mass concrete, belongs to the technical field of concrete materials, and solves the technical problems that existing mass concrete is high in hydration heat and easy to shrink and crack. The early-strength low-hydration-heat Portland cement mortar comprises the following raw materials by weight: 250-320 kg/m < 3 > of early-strength low-hydration-heat Portland cement, 80-150 kg/m < 3 > of fly ash, 20-40 kg/m < 3 > of an expanding agent, 0-5 kg/m < 3 > of an additive, 7-10 kg/m < 3 > of a water reducing agent, 1000-1100 kg/m < 3 > of coarse aggregate, 750-800 kg/m < 3 > of fine aggregate, and 140-160 kg/ The early-strength low-hydration-heat Portland cement is matched with the fly ash, the additive and the aggregate with a low thermal expansion coefficient to prepare the concrete, so that the hydration heat of the mass concrete is reduced, the shrinkage is reduced, the cracking is prevented, the freezing resistance is improved, and the service life of the mass concrete is prolonged.
本发明公开了一种低收缩抗冻大体积混凝土，属于混凝土材料技术领域，解决现有大体积混凝土水化热高、易收缩和开裂的技术问题。本发明包括按重量配置的以下原料：早强低水化热硅酸盐水泥250～320kg/m3、粉煤灰80～150kg/m3、膨胀剂20～40kg/m3、外加剂0～5kg/m3、减水剂7～10kg/m3、粗集料1000～1100kg/m3、细集料750～800kg/m3、水140～160kg/m3。本发明利用早强低水化热硅酸盐水泥搭配粉煤灰、外加剂和热膨胀系数低的集料制备混凝土，用于降低大体积混凝土水化热，减少收缩和防止开裂，提高抗冻性，延长大体积混凝土使用寿命。
Low-shrinkage anti-freezing mass concrete
The invention discloses low-shrinkage anti-freezing mass concrete, belongs to the technical field of concrete materials, and solves the technical problems that existing mass concrete is high in hydration heat and easy to shrink and crack. The early-strength low-hydration-heat Portland cement mortar comprises the following raw materials by weight: 250-320 kg/m < 3 > of early-strength low-hydration-heat Portland cement, 80-150 kg/m < 3 > of fly ash, 20-40 kg/m < 3 > of an expanding agent, 0-5 kg/m < 3 > of an additive, 7-10 kg/m < 3 > of a water reducing agent, 1000-1100 kg/m < 3 > of coarse aggregate, 750-800 kg/m < 3 > of fine aggregate, and 140-160 kg/ The early-strength low-hydration-heat Portland cement is matched with the fly ash, the additive and the aggregate with a low thermal expansion coefficient to prepare the concrete, so that the hydration heat of the mass concrete is reduced, the shrinkage is reduced, the cracking is prevented, the freezing resistance is improved, and the service life of the mass concrete is prolonged.
本发明公开了一种低收缩抗冻大体积混凝土，属于混凝土材料技术领域，解决现有大体积混凝土水化热高、易收缩和开裂的技术问题。本发明包括按重量配置的以下原料：早强低水化热硅酸盐水泥250～320kg/m3、粉煤灰80～150kg/m3、膨胀剂20～40kg/m3、外加剂0～5kg/m3、减水剂7～10kg/m3、粗集料1000～1100kg/m3、细集料750～800kg/m3、水140～160kg/m3。本发明利用早强低水化热硅酸盐水泥搭配粉煤灰、外加剂和热膨胀系数低的集料制备混凝土，用于降低大体积混凝土水化热，减少收缩和防止开裂，提高抗冻性，延长大体积混凝土使用寿命。
Low-shrinkage anti-freezing mass concrete
一种低收缩抗冻大体积混凝土
ZHONG WEN (author) / XU YIGANG (author) / LI JUN (author) / WANG NING (author) / CHEN XUEMEI (author) / CHONG NA (author) / XIA YANQING (author) / LIN YAN (author) / ZHANG LINGZHI (author)
2022-10-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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