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Lightweight aggregate based on surface modification, preparation method of lightweight aggregate and lightweight concrete
The invention discloses a lightweight aggregate based on surface modification, a preparation method of the lightweight aggregate and lightweight concrete. The lightweight aggregate based on surface modification comprises EPS foam particles and a coating layer covering the surfaces of the EPS foam particles, wherein the coating layer is prepared from the following raw materials in parts by mass: 1000 parts of ordinary Portland cement, 15-30 parts of nano silicon dioxide and 3-5 parts of a polycarboxylate water reducing agent, wherein the water-binder ratio is 0.35-0.4. The preparation comprises the steps: mixing the raw materials of the coating layer, spraying the mixture on the EPS foam particles subjected to water soaking treatment, granulating, removing moisture in the granulating process, and finally curing to obtain the lightweight aggregate with porous surface and uniform particles. The preparation is simple, and the operation is convenient; and the obtained lightweight aggregate increases the hydrophilic performance of the EPS foam particles, avoids layering of EPS, is high in strength and low in stacking density, has the characteristics of light weight, energy conservation, heat preservation, sound insulation, economy, environmental protection and the like when being used in the lightweight concrete, and is easy to popularize and apply.
本发明公开了一种基于表面改性轻质集料及其制备方法和一种轻量混凝土。该基于表面改性轻质集料包括EPS泡沫颗粒和覆盖在EPS泡沫颗粒表面的包覆层，其中包覆层通过以下质量份的原料制备得到：普通硅酸盐水泥1000份、纳米二氧化硅15～30份和聚羧酸减水剂3～5份，水胶比0.35～0.4。其制备为：将包覆层原料混合后喷涂在经浸水处理的EPS泡沫颗粒上，然后进行造粒并在造粒过程中去除水分，最后养护即得表面多孔、颗粒均匀的轻质集料，制备简单，操作方便；所得轻质集料增加了EPS泡沫颗粒的亲水性能，避免EPS的分层，强度高、堆积密度低，用于轻量混凝土中兼具轻质节能、保温隔音、经济环保等特性，易于推广应用。
Lightweight aggregate based on surface modification, preparation method of lightweight aggregate and lightweight concrete
The invention discloses a lightweight aggregate based on surface modification, a preparation method of the lightweight aggregate and lightweight concrete. The lightweight aggregate based on surface modification comprises EPS foam particles and a coating layer covering the surfaces of the EPS foam particles, wherein the coating layer is prepared from the following raw materials in parts by mass: 1000 parts of ordinary Portland cement, 15-30 parts of nano silicon dioxide and 3-5 parts of a polycarboxylate water reducing agent, wherein the water-binder ratio is 0.35-0.4. The preparation comprises the steps: mixing the raw materials of the coating layer, spraying the mixture on the EPS foam particles subjected to water soaking treatment, granulating, removing moisture in the granulating process, and finally curing to obtain the lightweight aggregate with porous surface and uniform particles. The preparation is simple, and the operation is convenient; and the obtained lightweight aggregate increases the hydrophilic performance of the EPS foam particles, avoids layering of EPS, is high in strength and low in stacking density, has the characteristics of light weight, energy conservation, heat preservation, sound insulation, economy, environmental protection and the like when being used in the lightweight concrete, and is easy to popularize and apply.
本发明公开了一种基于表面改性轻质集料及其制备方法和一种轻量混凝土。该基于表面改性轻质集料包括EPS泡沫颗粒和覆盖在EPS泡沫颗粒表面的包覆层，其中包覆层通过以下质量份的原料制备得到：普通硅酸盐水泥1000份、纳米二氧化硅15～30份和聚羧酸减水剂3～5份，水胶比0.35～0.4。其制备为：将包覆层原料混合后喷涂在经浸水处理的EPS泡沫颗粒上，然后进行造粒并在造粒过程中去除水分，最后养护即得表面多孔、颗粒均匀的轻质集料，制备简单，操作方便；所得轻质集料增加了EPS泡沫颗粒的亲水性能，避免EPS的分层，强度高、堆积密度低，用于轻量混凝土中兼具轻质节能、保温隔音、经济环保等特性，易于推广应用。
Lightweight aggregate based on surface modification, preparation method of lightweight aggregate and lightweight concrete
一种基于表面改性轻质集料及其制备方法和一种轻量混凝土
DAI SHAOBIN (author) / SHANG LISHI (author) / YANG HANG (author)
2021-08-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Lightweight aggregate concrete
| Engineering Index Backfile | 1964
Lightweight Aggregate Concrete
| UB Braunschweig | 1977
| European Patent Office | 2024
Lightweight aggregate concrete
| Engineering Index Backfile | 1949