Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete curing agent and preparation process thereof
The invention discloses a concrete curing agent and a preparation process thereof. The concrete curing agent is prepared from the following raw materials in parts by weight: 40-60 parts of lithium silicate, 10-20 parts of a silane coupling agent, 6-12 parts of nano titanium dioxide, 10-30 parts of a modified water reducing agent, 10-20 parts of an expanding agent and 50-80 parts of water. According to the concrete curing agent and the preparation process thereof, a modified naphthalene water reducer and an oxidized etherified starch water reducer are introduced into a stirrer to be mixed and stirred uniformly to obtain a composite naphthalene water reducer, the modified naphthalene water reducer contains a large number of hydroxyl groups (-OH) and carboxyl groups (-COOH), the hydroxyl groups (-OH) and calcium ions on the surfaces of cement particles are adsorbed to form a film, hydroxyl groups can form hydrogen bonds with the surface of cement to prevent hydration, a retarding effect on cement hydration is achieved, and an oxidized etherified starch water reducing agent and a naphthalene water reducing agent are compounded, so that the purposes of increasing the water reducing rate, improving the slump retaining property and improving the later strength of concrete are achieved.
本发明公开了一种混凝土固化剂及其制备工艺，由以下重量份原料组成：硅酸锂40‑60份、硅烷偶联剂10‑20份、纳米二氧化钛6‑12份、改性减水剂10‑30份、膨胀剂10‑20份和水50‑80份。该混凝土固化剂及其制备工艺，通过将改性萘系减水剂和氧化醚化淀粉减水剂通入搅拌机中进行混合搅拌均匀，得到复合萘系减水剂，改性萘系中含有大量的羟基(‑OH)和羧基(‑COOH)，羟基(‑OH)与水泥粒子表面的钙离子吸附形成膜，且羟基可与水泥表面形成氢键阻止水化进行，对水泥水化有缓凝作用，采用氧化醚化淀粉减水剂与萘系减水剂进行复配，以达到提高减水率、改善保坍性及提高混凝土后期强度的目的。
Concrete curing agent and preparation process thereof
The invention discloses a concrete curing agent and a preparation process thereof. The concrete curing agent is prepared from the following raw materials in parts by weight: 40-60 parts of lithium silicate, 10-20 parts of a silane coupling agent, 6-12 parts of nano titanium dioxide, 10-30 parts of a modified water reducing agent, 10-20 parts of an expanding agent and 50-80 parts of water. According to the concrete curing agent and the preparation process thereof, a modified naphthalene water reducer and an oxidized etherified starch water reducer are introduced into a stirrer to be mixed and stirred uniformly to obtain a composite naphthalene water reducer, the modified naphthalene water reducer contains a large number of hydroxyl groups (-OH) and carboxyl groups (-COOH), the hydroxyl groups (-OH) and calcium ions on the surfaces of cement particles are adsorbed to form a film, hydroxyl groups can form hydrogen bonds with the surface of cement to prevent hydration, a retarding effect on cement hydration is achieved, and an oxidized etherified starch water reducing agent and a naphthalene water reducing agent are compounded, so that the purposes of increasing the water reducing rate, improving the slump retaining property and improving the later strength of concrete are achieved.
本发明公开了一种混凝土固化剂及其制备工艺，由以下重量份原料组成：硅酸锂40‑60份、硅烷偶联剂10‑20份、纳米二氧化钛6‑12份、改性减水剂10‑30份、膨胀剂10‑20份和水50‑80份。该混凝土固化剂及其制备工艺，通过将改性萘系减水剂和氧化醚化淀粉减水剂通入搅拌机中进行混合搅拌均匀，得到复合萘系减水剂，改性萘系中含有大量的羟基(‑OH)和羧基(‑COOH)，羟基(‑OH)与水泥粒子表面的钙离子吸附形成膜，且羟基可与水泥表面形成氢键阻止水化进行，对水泥水化有缓凝作用，采用氧化醚化淀粉减水剂与萘系减水剂进行复配，以达到提高减水率、改善保坍性及提高混凝土后期强度的目的。
Concrete curing agent and preparation process thereof
一种混凝土固化剂及其制备工艺
XIAO WENJING (Autor:in) / ZHANG KAI (Autor:in) / LIU JIABAO (Autor:in)
27.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Concrete curing agent and preparation process thereof
| Europäisches Patentamt | 2021