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A platform for research: civil engineering, architecture and urbanism
The invention belongs to the technical field of concrete admixtures, and discloses a composite admixture for shotcrete. The composite admixture is prepared from the following substances in parts by weight: 5 to 20 parts of polycarboxylate superplasticizer, 1 to 5 parts of disodium alcohol ether sulfosuccinate, 2 to 8 parts of tackifier, 1 to 3 parts of ammonium nitrate, 5 to 10 parts of alcohol amine carboxylate, 0.01 to 0.1 part of sodium dodecyl benzene sulfonate, 0.01 to 0.1 part of organic silicon defoamer and 30 to 80 parts of ultrafine fly ash. After the admixture is added, the contact performance of concrete and a spraying surface is good, the problem of serious springback of sprayed concrete is effectively solved, coagulation and solidification of the sprayed concrete can be accelerated, and the strength of the concrete is improved.
本发明属于混凝土外加剂技术领域，公开了一种喷射混凝土用复合外加剂，由以下重量份数的物质组成：聚羧酸减水剂5‑20份、醇醚磺基琥珀酸单酯二钠盐1‑5份、增粘剂2‑8份、硝酸铵1‑3份、醇胺羧酸酯5‑10份、十二烷基苯磺酸钠0.01‑0.1份、有机硅消泡剂0.01‑0.1份，超细粉煤灰30‑80份。添加该外加剂后，可使混凝土与喷射面接触性好，有效解决喷射混凝土回弹严重的问题，还可可加速喷射混凝土凝结固化，提高混凝土强度。
The invention belongs to the technical field of concrete admixtures, and discloses a composite admixture for shotcrete. The composite admixture is prepared from the following substances in parts by weight: 5 to 20 parts of polycarboxylate superplasticizer, 1 to 5 parts of disodium alcohol ether sulfosuccinate, 2 to 8 parts of tackifier, 1 to 3 parts of ammonium nitrate, 5 to 10 parts of alcohol amine carboxylate, 0.01 to 0.1 part of sodium dodecyl benzene sulfonate, 0.01 to 0.1 part of organic silicon defoamer and 30 to 80 parts of ultrafine fly ash. After the admixture is added, the contact performance of concrete and a spraying surface is good, the problem of serious springback of sprayed concrete is effectively solved, coagulation and solidification of the sprayed concrete can be accelerated, and the strength of the concrete is improved.
本发明属于混凝土外加剂技术领域，公开了一种喷射混凝土用复合外加剂，由以下重量份数的物质组成：聚羧酸减水剂5‑20份、醇醚磺基琥珀酸单酯二钠盐1‑5份、增粘剂2‑8份、硝酸铵1‑3份、醇胺羧酸酯5‑10份、十二烷基苯磺酸钠0.01‑0.1份、有机硅消泡剂0.01‑0.1份，超细粉煤灰30‑80份。添加该外加剂后，可使混凝土与喷射面接触性好，有效解决喷射混凝土回弹严重的问题，还可可加速喷射混凝土凝结固化，提高混凝土强度。
Composite admixture for shotcrete
一种喷射混凝土用复合外加剂
PING QIAOLI (author)
2020-11-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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