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A platform for research: civil engineering, architecture and urbanism
Repair admixture for premixed concrete, quick-hardening early-strength concrete and preparation method of quick-hardening early-strength concrete
The invention discloses a repairing admixture for premixed concrete, quick-hardening early-strength concrete and a preparation method of the quick-hardening early-strength concrete. The repairing admixture for the premixed concrete is prepared from 10-30 parts by weight of a retarder, 40-70 parts by weight of an early-strength agent and 1-5 parts by weight of a dispersing aid, and the retarder is selected from one or a combination of sodium citrate and sodium tartrate; the early strength agent is selected from one or a combination of aluminum sulfate and sodium metaaluminate; the dispersing aid is selected from one or a combination of sodium dodecyl benzene sulfonate, sodium alcohol ether phosphate and potassium alcohol ether phosphate. According to the repairing admixture for the premixed concrete, the premixed concrete has the early strength characteristic while the setting time of the premixed concrete is adjusted, when the repairing admixture is used, the premixed concrete is added and stirred, then pouring and compacting are conducted immediately, road repairing can be completed, and traffic is opened within the set time (4-6 h) (the compressive strength must be larger than or equal to 28.0 MPa).
本发明公开了一种预拌混凝土用修复外加剂、快硬早强混凝土及其制备方法，所述预拌混凝土用修复外加剂由10‑30重量份的缓凝剂，40‑70重量份的早强剂，1‑5重量份的分散助剂组成，所述缓凝剂选自柠檬酸钠、酒石酸钠中的一种或其组合；所述早强剂选自硫酸铝、偏铝酸钠中的一种或其组合；所述分散助剂选自十二烷基苯磺酸钠、醇醚磷酸酯钠、醇醚磷酸酯钾中的一种或其组合。所述预拌混凝土用修复外加剂在调节预拌混凝土凝结时间的同时使预拌混凝土具有早强特性，在使用时加入预拌混凝土搅拌后立即浇筑密实，即可完成道路修复并在规定时间(4‑6h)内开放交通(抗压强度必须大于等于28.0MPa)。
Repair admixture for premixed concrete, quick-hardening early-strength concrete and preparation method of quick-hardening early-strength concrete
The invention discloses a repairing admixture for premixed concrete, quick-hardening early-strength concrete and a preparation method of the quick-hardening early-strength concrete. The repairing admixture for the premixed concrete is prepared from 10-30 parts by weight of a retarder, 40-70 parts by weight of an early-strength agent and 1-5 parts by weight of a dispersing aid, and the retarder is selected from one or a combination of sodium citrate and sodium tartrate; the early strength agent is selected from one or a combination of aluminum sulfate and sodium metaaluminate; the dispersing aid is selected from one or a combination of sodium dodecyl benzene sulfonate, sodium alcohol ether phosphate and potassium alcohol ether phosphate. According to the repairing admixture for the premixed concrete, the premixed concrete has the early strength characteristic while the setting time of the premixed concrete is adjusted, when the repairing admixture is used, the premixed concrete is added and stirred, then pouring and compacting are conducted immediately, road repairing can be completed, and traffic is opened within the set time (4-6 h) (the compressive strength must be larger than or equal to 28.0 MPa).
本发明公开了一种预拌混凝土用修复外加剂、快硬早强混凝土及其制备方法，所述预拌混凝土用修复外加剂由10‑30重量份的缓凝剂，40‑70重量份的早强剂，1‑5重量份的分散助剂组成，所述缓凝剂选自柠檬酸钠、酒石酸钠中的一种或其组合；所述早强剂选自硫酸铝、偏铝酸钠中的一种或其组合；所述分散助剂选自十二烷基苯磺酸钠、醇醚磷酸酯钠、醇醚磷酸酯钾中的一种或其组合。所述预拌混凝土用修复外加剂在调节预拌混凝土凝结时间的同时使预拌混凝土具有早强特性，在使用时加入预拌混凝土搅拌后立即浇筑密实，即可完成道路修复并在规定时间(4‑6h)内开放交通(抗压强度必须大于等于28.0MPa)。
Repair admixture for premixed concrete, quick-hardening early-strength concrete and preparation method of quick-hardening early-strength concrete
预拌混凝土用修复外加剂、快硬早强混凝土及其制备方法
DONG HUAN (author) / SUN ZHENPING (author) / LI HUANHUAN (author) / PANG MIN (author) / TAO HOUXING (author) / YANG LU (author) / YOU ZIYANG (author) / ZHU WEIFENG (author)
2024-03-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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