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Special powdery water reducing agent for high-strength sprayed concrete
The invention discloses a special powdery water reducing agent for high-strength sprayed concrete, which comprises the following components in parts by weight: 800-850 parts of compressed silicon powder; 0-50 parts of a plasticizer; 3-5 parts of an adhesive; 0-10 parts of a surfactant; 0-50 parts of a slump retaining agent; and 50-100 parts of a high-efficiency water reducing agent, wherein the high-efficiency water reducing agent is a naphthalene sulfonate formaldehyde condensate of which the solid content is 1.5% being less than Na2SO4 content and being less than 2.5%. The special powdery water reducing agent for the high-strength sprayed concrete has the advantages that the consumption of cement and an accelerator is reduced, the water reducing agent in the sprayed concrete is canceled, the rebound rate of the sprayed concrete is reduced by 10%, the initial setting time of the sprayed concrete is shortened, the strength of the sprayed concrete is improved and the like; and the special powdery water reducing agent is of a powdery structure and is convenient to carry and store.
本发明公开了高强喷射混凝土专用粉状减水剂，包括以下重量份的组分，压缩硅粉800‑850份；塑化剂：0‑50份；粘合剂：3‑5份；表面活性剂：0‑10份；保坍剂：0‑50份；高效减水剂：50‑100份；所述高效减水剂为固含量为1.5％<2.5％的萘磺酸盐甲醛缩合物。本发明所述高强喷射混凝土专用粉状减水剂，具有降低水泥、速凝剂用量、取消喷射混凝土中减水剂、降低喷射混凝土回弹率10％、缩短喷射混凝土初凝时间、提高喷射混凝土强度等优点；并且为粉状结构，方便搬运和储存。
Special powdery water reducing agent for high-strength sprayed concrete
The invention discloses a special powdery water reducing agent for high-strength sprayed concrete, which comprises the following components in parts by weight: 800-850 parts of compressed silicon powder; 0-50 parts of a plasticizer; 3-5 parts of an adhesive; 0-10 parts of a surfactant; 0-50 parts of a slump retaining agent; and 50-100 parts of a high-efficiency water reducing agent, wherein the high-efficiency water reducing agent is a naphthalene sulfonate formaldehyde condensate of which the solid content is 1.5% being less than Na2SO4 content and being less than 2.5%. The special powdery water reducing agent for the high-strength sprayed concrete has the advantages that the consumption of cement and an accelerator is reduced, the water reducing agent in the sprayed concrete is canceled, the rebound rate of the sprayed concrete is reduced by 10%, the initial setting time of the sprayed concrete is shortened, the strength of the sprayed concrete is improved and the like; and the special powdery water reducing agent is of a powdery structure and is convenient to carry and store.
本发明公开了高强喷射混凝土专用粉状减水剂，包括以下重量份的组分，压缩硅粉800‑850份；塑化剂：0‑50份；粘合剂：3‑5份；表面活性剂：0‑10份；保坍剂：0‑50份；高效减水剂：50‑100份；所述高效减水剂为固含量为1.5％<2.5％的萘磺酸盐甲醛缩合物。本发明所述高强喷射混凝土专用粉状减水剂，具有降低水泥、速凝剂用量、取消喷射混凝土中减水剂、降低喷射混凝土回弹率10％、缩短喷射混凝土初凝时间、提高喷射混凝土强度等优点；并且为粉状结构，方便搬运和储存。
Special powdery water reducing agent for high-strength sprayed concrete
高强喷射混凝土专用粉状减水剂
LI GUANGHUI (author)
2021-04-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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