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A platform for research: civil engineering, architecture and urbanism
Low-heat high-crack-resistance large-volume radiation-proof concrete and preparation method thereof
The invention provides low-heat high-crack-resistance large-volume radiation-proof concrete and a preparation method thereof, and mainly relates to the technical field of concrete. The low-heat high-crack-resistance large-volume radiation-proof concrete comprises the following components in parts by weight: 200-250 parts of low-heat crack-resistance cement; 80 to 140 parts of mineral admixture; 25-30 parts of an expanding agent; 3-4 parts of borax; 1000 to 1090 parts of coarse aggregate; 780 to 860 parts of fine aggregate; 5-10 parts of an additive; and 145 to 160 parts of water. According to the invention, low-heat cement and fly ash are adopted as a new cementing material system, so that early hydration heat release and hydration heat release rate are reduced, early stability of concrete is improved, and early temperature rise of an anti-radiation large-volume structure is effectively reduced under the condition that a cooling water pipe is not allowed to be pre-buried; and the early cracking risk caused by the temperature is reduced.
本发明提供一种低热高抗裂大体积防辐射混凝土及其制备方法，主要涉及混凝土技术领域，以重量份计包括：低热抗裂水泥：200～250；矿物掺合料：80‑140；膨胀剂：25～30；硼砂：3～4；粗骨料：1000～1090；细骨料：780～860；外加剂：5～10；水：145～160。本发明通过采用低热水泥以及粉煤灰作为新胶凝材料体系降低早期水化放热量及水化放热速率，提高混凝土前期稳定性，有效解决防了辐射大体积结构在不允许预埋冷却水管的条件下降低早期温升，降低由于温度而引起的早期开裂风险。
Low-heat high-crack-resistance large-volume radiation-proof concrete and preparation method thereof
The invention provides low-heat high-crack-resistance large-volume radiation-proof concrete and a preparation method thereof, and mainly relates to the technical field of concrete. The low-heat high-crack-resistance large-volume radiation-proof concrete comprises the following components in parts by weight: 200-250 parts of low-heat crack-resistance cement; 80 to 140 parts of mineral admixture; 25-30 parts of an expanding agent; 3-4 parts of borax; 1000 to 1090 parts of coarse aggregate; 780 to 860 parts of fine aggregate; 5-10 parts of an additive; and 145 to 160 parts of water. According to the invention, low-heat cement and fly ash are adopted as a new cementing material system, so that early hydration heat release and hydration heat release rate are reduced, early stability of concrete is improved, and early temperature rise of an anti-radiation large-volume structure is effectively reduced under the condition that a cooling water pipe is not allowed to be pre-buried; and the early cracking risk caused by the temperature is reduced.
本发明提供一种低热高抗裂大体积防辐射混凝土及其制备方法，主要涉及混凝土技术领域，以重量份计包括：低热抗裂水泥：200～250；矿物掺合料：80‑140；膨胀剂：25～30；硼砂：3～4；粗骨料：1000～1090；细骨料：780～860；外加剂：5～10；水：145～160。本发明通过采用低热水泥以及粉煤灰作为新胶凝材料体系降低早期水化放热量及水化放热速率，提高混凝土前期稳定性，有效解决防了辐射大体积结构在不允许预埋冷却水管的条件下降低早期温升，降低由于温度而引起的早期开裂风险。
Low-heat high-crack-resistance large-volume radiation-proof concrete and preparation method thereof
一种低热高抗裂大体积防辐射混凝土及其制备方法
XIE YONG (author) / XIAO ZHIYONG (author) / ZHOU JUN (author) / YANG CHUANXIN (author) / YAN AN (author) / GUO JINGSHEN (author) / TU JUNXIAO (author) / DU HAITAO (author) / WU XIN (author) / PENG WENBIN (author)
2023-02-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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