Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Waterproof concrete pipe and preparation method thereof
The invention belongs to the technical field of concrete pipes, and relates to a waterproof concrete pipe and a preparation method thereof. The waterproof concrete pipe comprises, by weight, 2400-2500 parts of the following raw materials: 100-500 parts of cement; 500-800 parts by weight of sand; 10-150 parts by weight of fly ash; 10-150 parts by weight of mineral powder; 900 to 1400 parts by weight of broken stone; 0.5-6 parts by weight of an octyl silane waterproof agent, wherein the octyl silane waterproof agent is an oil-in-water emulsion; 1-6 parts by weight of a shrinkage reducing agent; 1-8 parts by weight of a water reducing agent; and 120-180 parts by weight of water. According to the waterproof concrete pipe and the preparation method thereof of the present invention, the siloxane group on the octyl silane waterproof agent is hydrolyzed so as to perform a condensation reaction with the silicon hydroxyl group on the cement hydration product C-S-H gel so as to be chemically anchored on capillary pore walls, and the hydrophobic group on the octyl silane waterproof agent faces capillary pores, such that the hydrophobic structure provides the excellent waterproofness for the waterproof concrete pipe. The preparation method of the waterproof concrete pipe comprises the following steps of: 1) weighing and stirring; (2) vibration core forming; and 3) steam curing and form removal.
本发明属于混凝土管材技术领域，尤其涉及一种防水混凝土管材及其制备方法。该防水混凝土管材包括总重量共2400～2500重量份的以下原料：100‑500重量份的水泥；500‑800重量份的砂；10‑150重量份的粉煤灰；10‑150重量份的矿粉；900‑1400重量份的碎石；0.5‑6重量份的辛基硅烷防水剂，辛基硅烷防水剂为水包油乳液；1‑6重量份的减缩剂；1‑8重量份的减水剂以及120‑180重量份的水。辛基硅烷防水剂上的硅氧烷基团发生水解进而与水泥水化产物C‑S‑H凝胶上的硅羟基发生缩合反应，从而化学锚定在毛细孔壁上，而辛基硅烷防水剂上的疏水基团朝向毛细孔，这样的疏水结构赋予了防水混凝土管材优异的防水性。该防水混凝土管材的制备方法，包括以下步骤：1)称量、搅拌；2)振芯成型；3)蒸养、拆模。
Waterproof concrete pipe and preparation method thereof
The invention belongs to the technical field of concrete pipes, and relates to a waterproof concrete pipe and a preparation method thereof. The waterproof concrete pipe comprises, by weight, 2400-2500 parts of the following raw materials: 100-500 parts of cement; 500-800 parts by weight of sand; 10-150 parts by weight of fly ash; 10-150 parts by weight of mineral powder; 900 to 1400 parts by weight of broken stone; 0.5-6 parts by weight of an octyl silane waterproof agent, wherein the octyl silane waterproof agent is an oil-in-water emulsion; 1-6 parts by weight of a shrinkage reducing agent; 1-8 parts by weight of a water reducing agent; and 120-180 parts by weight of water. According to the waterproof concrete pipe and the preparation method thereof of the present invention, the siloxane group on the octyl silane waterproof agent is hydrolyzed so as to perform a condensation reaction with the silicon hydroxyl group on the cement hydration product C-S-H gel so as to be chemically anchored on capillary pore walls, and the hydrophobic group on the octyl silane waterproof agent faces capillary pores, such that the hydrophobic structure provides the excellent waterproofness for the waterproof concrete pipe. The preparation method of the waterproof concrete pipe comprises the following steps of: 1) weighing and stirring; (2) vibration core forming; and 3) steam curing and form removal.
本发明属于混凝土管材技术领域，尤其涉及一种防水混凝土管材及其制备方法。该防水混凝土管材包括总重量共2400～2500重量份的以下原料：100‑500重量份的水泥；500‑800重量份的砂；10‑150重量份的粉煤灰；10‑150重量份的矿粉；900‑1400重量份的碎石；0.5‑6重量份的辛基硅烷防水剂，辛基硅烷防水剂为水包油乳液；1‑6重量份的减缩剂；1‑8重量份的减水剂以及120‑180重量份的水。辛基硅烷防水剂上的硅氧烷基团发生水解进而与水泥水化产物C‑S‑H凝胶上的硅羟基发生缩合反应，从而化学锚定在毛细孔壁上，而辛基硅烷防水剂上的疏水基团朝向毛细孔，这样的疏水结构赋予了防水混凝土管材优异的防水性。该防水混凝土管材的制备方法，包括以下步骤：1)称量、搅拌；2)振芯成型；3)蒸养、拆模。
Waterproof concrete pipe and preparation method thereof
一种防水混凝土管材及其制备方法
CHAI TANG (Autor:in) / JIANG LINGFEI (Autor:in) / HUANG DONG (Autor:in)
12.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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