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A platform for research: civil engineering, architecture and urbanism
Aerated concrete dry-mixed plastering mortar and preparation method thereof
The invention discloses an aerated concrete dry-mixed plastering mortar and a preparation method thereof. The plastering mortar is prepared from the following components in parts by weight: 80 to 110parts of ordinary Portland cement, 60 to 90 parts of machine-made sand, 25 to 50 parts of fly ash, 15 to 30 parts of attapulgite clay, 3 to 6 parts of expanded perlite fine powder-modified EVA emulsion powder compound, 2 to 8 parts of an efficient water reducer, 2 to 5 parts of hydroxypropyl methyl cellulose ether and 1 to 2.5 parts of an anti-cracking agent. According to the modified EVA emulsionpowder, diallyl phthalate with an active reaction group is connected to a molecular chain of an EVA copolymer, so that a hollowing phenomenon is effectively avoided; the density of the expanded perlite fine powder is small; high water retention capability is realized; the expanded perlite fine powder is compounded with the modified EVA emulsion powder to form a polymer colloid-powder-hydrated cement matrix interpenetrating matrix mixture, the reduction of the soaking bonding strength of the modified EVA emulsion powder is supplemented, the soaking bonding strength of the mortar is improved, cracks and hollowing phenomena are inhibited, even expansion is realized, and the breaking strength of the mortar is enhanced.
一种加气混凝土干混抹灰砂浆及其制备方法，按重量份包括如下成分：普硅水泥80‑110份、机制砂60‑90份、粉煤灰25‑50份、凹凸棒黏土15‑30份、膨胀珍珠岩细粉‑改性EVA乳胶粉复合物3‑6份、高效减水剂2‑8份、羟丙基甲基纤维素醚2‑5份、抗裂剂1‑2.5份；本发明提供的改性EVA乳胶粉是将具有活性反应基团的邻苯二甲酸二烯丙酯接入EVA共聚物的分子链上，有效地避免了空鼓现象的发生；膨胀珍珠岩细粉密度较小，具有较强的保水能力，将其与改性EVA乳胶粉复合，形成聚合物胶体‑粉体‑水化水泥基体互穿基质的混合体，补充了改性EVA乳胶粉的浸水粘结强度的下降，使得砂浆的浸水粘结强度反而有所提升，抑制了裂缝以及空鼓现象的发生甚至扩展，使得砂浆的抗折强度得到增强。
Aerated concrete dry-mixed plastering mortar and preparation method thereof
The invention discloses an aerated concrete dry-mixed plastering mortar and a preparation method thereof. The plastering mortar is prepared from the following components in parts by weight: 80 to 110parts of ordinary Portland cement, 60 to 90 parts of machine-made sand, 25 to 50 parts of fly ash, 15 to 30 parts of attapulgite clay, 3 to 6 parts of expanded perlite fine powder-modified EVA emulsion powder compound, 2 to 8 parts of an efficient water reducer, 2 to 5 parts of hydroxypropyl methyl cellulose ether and 1 to 2.5 parts of an anti-cracking agent. According to the modified EVA emulsionpowder, diallyl phthalate with an active reaction group is connected to a molecular chain of an EVA copolymer, so that a hollowing phenomenon is effectively avoided; the density of the expanded perlite fine powder is small; high water retention capability is realized; the expanded perlite fine powder is compounded with the modified EVA emulsion powder to form a polymer colloid-powder-hydrated cement matrix interpenetrating matrix mixture, the reduction of the soaking bonding strength of the modified EVA emulsion powder is supplemented, the soaking bonding strength of the mortar is improved, cracks and hollowing phenomena are inhibited, even expansion is realized, and the breaking strength of the mortar is enhanced.
一种加气混凝土干混抹灰砂浆及其制备方法，按重量份包括如下成分：普硅水泥80‑110份、机制砂60‑90份、粉煤灰25‑50份、凹凸棒黏土15‑30份、膨胀珍珠岩细粉‑改性EVA乳胶粉复合物3‑6份、高效减水剂2‑8份、羟丙基甲基纤维素醚2‑5份、抗裂剂1‑2.5份；本发明提供的改性EVA乳胶粉是将具有活性反应基团的邻苯二甲酸二烯丙酯接入EVA共聚物的分子链上，有效地避免了空鼓现象的发生；膨胀珍珠岩细粉密度较小，具有较强的保水能力，将其与改性EVA乳胶粉复合，形成聚合物胶体‑粉体‑水化水泥基体互穿基质的混合体，补充了改性EVA乳胶粉的浸水粘结强度的下降，使得砂浆的浸水粘结强度反而有所提升，抑制了裂缝以及空鼓现象的发生甚至扩展，使得砂浆的抗折强度得到增强。
Aerated concrete dry-mixed plastering mortar and preparation method thereof
一种加气混凝土干混抹灰砂浆及其制备方法
WANG XINGWEN (author) / XU RONGPING (author)
2020-11-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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