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High-strength compression-resistant crack-resistant lightweight aggregate concrete and preparation method thereof
The invention provides high-strength compression-resistant crack-resistant lightweight aggregate concrete and a preparation method thereof. The high-strength compression-resistant crack-resistant lightweight aggregate concrete is prepared from the following raw materials: 400 to 500 parts of cement, 50 to 60 parts of fly ash, 500 to 700 parts of lightweight aggregate, 600 to 800 parts of fine aggregate, 50 to 60 parts of reinforcing and toughening agent, 120 to 140 parts of water, 0.3 to 0.5 part of retarder and 6 to 8 parts of water reducing agent. The reinforcing and toughening agent provided by the invention is composed of fillers such as nano silicon dioxide powder, hollow glass beads and calcium sulfate whiskers and a polyurethane-epoxy resin emulsion, and the fillers are pretreated by a silane coupling agent before being added so as to improve the dispersity and form a unique and compact three-dimensional network structure; meanwhile, the powdery and spherical fillers are distributed in crystal whisker gaps to generate a synergistic effect so as to be lapped into a cross-linked colloid skeleton, and the distribution in a cement matrix greatly improves the strength of the concrete. Moreover, the preparation process is simple, excellent in performance and suitable for popularization and application.
本发明提供了一种高强度抗压抗裂轻骨料混凝土及其制备方法，原料：水泥400‑500份，粉煤灰50‑60份，轻骨料500‑700份，细骨料600‑800份，增强增韧剂50‑60份，水120‑140份，缓凝剂0.3‑0.5份，减水剂6‑8份。本发明提供的增强增韧剂是由纳米二氧化硅粉、空心玻璃微珠、硫酸钙晶须这些填料与聚氨酯‑环氧树脂乳液组成，填料在加入之前事先经硅烷偶联剂预处理，以提高分散性，形成独特紧密的立体网络状结构，同时粉末状和球形填料分布在晶须空隙中，产生协同效应而搭接成交联胶质骨架，在水泥基体中分布大大提高了混凝土的强度。而且，制备工艺简单，性能优异，适宜推广应用。
High-strength compression-resistant crack-resistant lightweight aggregate concrete and preparation method thereof
The invention provides high-strength compression-resistant crack-resistant lightweight aggregate concrete and a preparation method thereof. The high-strength compression-resistant crack-resistant lightweight aggregate concrete is prepared from the following raw materials: 400 to 500 parts of cement, 50 to 60 parts of fly ash, 500 to 700 parts of lightweight aggregate, 600 to 800 parts of fine aggregate, 50 to 60 parts of reinforcing and toughening agent, 120 to 140 parts of water, 0.3 to 0.5 part of retarder and 6 to 8 parts of water reducing agent. The reinforcing and toughening agent provided by the invention is composed of fillers such as nano silicon dioxide powder, hollow glass beads and calcium sulfate whiskers and a polyurethane-epoxy resin emulsion, and the fillers are pretreated by a silane coupling agent before being added so as to improve the dispersity and form a unique and compact three-dimensional network structure; meanwhile, the powdery and spherical fillers are distributed in crystal whisker gaps to generate a synergistic effect so as to be lapped into a cross-linked colloid skeleton, and the distribution in a cement matrix greatly improves the strength of the concrete. Moreover, the preparation process is simple, excellent in performance and suitable for popularization and application.
本发明提供了一种高强度抗压抗裂轻骨料混凝土及其制备方法，原料：水泥400‑500份，粉煤灰50‑60份，轻骨料500‑700份，细骨料600‑800份，增强增韧剂50‑60份，水120‑140份，缓凝剂0.3‑0.5份，减水剂6‑8份。本发明提供的增强增韧剂是由纳米二氧化硅粉、空心玻璃微珠、硫酸钙晶须这些填料与聚氨酯‑环氧树脂乳液组成，填料在加入之前事先经硅烷偶联剂预处理，以提高分散性，形成独特紧密的立体网络状结构，同时粉末状和球形填料分布在晶须空隙中，产生协同效应而搭接成交联胶质骨架，在水泥基体中分布大大提高了混凝土的强度。而且，制备工艺简单，性能优异，适宜推广应用。
High-strength compression-resistant crack-resistant lightweight aggregate concrete and preparation method thereof
一种高强度抗压抗裂轻骨料混凝土及其制备方法
ZHOU LIU (author) / YE PING (author) / XIA MUYUAN (author) / WANG SHUHUA (author) / ZOU JUN (author) / SUO XIMEI (author)
2023-09-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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