Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Durable anti-cracking concrete and preparation method thereof
The invention discloses durable anti-cracking concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by mass: 1060 to 1150 parts of coarse aggregate, 600 to 680 parts of fine aggregate, 310 to 400 parts of cement, 50 to 70 parts of fly ash, 70 to 90 parts of mineral powder, 140 to 160 parts of water, 4 to 9 parts of water reducing agent and 24 to 32 parts of maleic anhydride grafted epoxy silane oligomer, the epoxy silane oligomer is a hydrolytic polymerization product of an epoxy silane compound. An epoxy group contained in the maleic anhydride grafted epoxy silane oligomer is a hydrophobic group, so that the waterproofness of the aggregate can be remarkably improved, and water molecules are effectively blocked, thereby inhibiting an alkali-aggregate reaction; the carboxyl group introduced by the grafted maleic anhydride can effectively reduce the alkali content in the concrete, is in favor of forming a cross-linked network structure, obstructs the water absorption effect of the concrete, and improves the strength and crack resistance of the concrete.
本申请公开了一种耐久抗开裂混凝土及其制备方法，该混凝土包括以下质量份数的原料：粗骨料1060～1150份、细骨料600～680份、水泥310～400份、粉煤灰50～70份、矿粉70～90份、水140～160份、减水剂4～9份、马来酸酐接枝环氧基硅烷低聚物24～32份；所述环氧基硅烷低聚物是环氧基硅烷化合物的水解聚合产物。马来酸酐接枝环氧基硅烷低聚物中含有的环氧基为憎水性基团，可显著提高骨料的防水性，有效对水分子进行阻隔从而抑制碱骨料反应；接枝的马来酸酐引入的羧基可以有效降低混凝土中的碱含量，并有利于形成交联网状结构，阻隔混凝土的吸水作用，提高混凝土的强度和抗裂性。
Durable anti-cracking concrete and preparation method thereof
The invention discloses durable anti-cracking concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by mass: 1060 to 1150 parts of coarse aggregate, 600 to 680 parts of fine aggregate, 310 to 400 parts of cement, 50 to 70 parts of fly ash, 70 to 90 parts of mineral powder, 140 to 160 parts of water, 4 to 9 parts of water reducing agent and 24 to 32 parts of maleic anhydride grafted epoxy silane oligomer, the epoxy silane oligomer is a hydrolytic polymerization product of an epoxy silane compound. An epoxy group contained in the maleic anhydride grafted epoxy silane oligomer is a hydrophobic group, so that the waterproofness of the aggregate can be remarkably improved, and water molecules are effectively blocked, thereby inhibiting an alkali-aggregate reaction; the carboxyl group introduced by the grafted maleic anhydride can effectively reduce the alkali content in the concrete, is in favor of forming a cross-linked network structure, obstructs the water absorption effect of the concrete, and improves the strength and crack resistance of the concrete.
本申请公开了一种耐久抗开裂混凝土及其制备方法，该混凝土包括以下质量份数的原料：粗骨料1060～1150份、细骨料600～680份、水泥310～400份、粉煤灰50～70份、矿粉70～90份、水140～160份、减水剂4～9份、马来酸酐接枝环氧基硅烷低聚物24～32份；所述环氧基硅烷低聚物是环氧基硅烷化合物的水解聚合产物。马来酸酐接枝环氧基硅烷低聚物中含有的环氧基为憎水性基团，可显著提高骨料的防水性，有效对水分子进行阻隔从而抑制碱骨料反应；接枝的马来酸酐引入的羧基可以有效降低混凝土中的碱含量，并有利于形成交联网状结构，阻隔混凝土的吸水作用，提高混凝土的强度和抗裂性。
Durable anti-cracking concrete and preparation method thereof
一种耐久抗开裂混凝土及其制备方法
LAN JIANG (Autor:in) / ZHANG XIANBIN (Autor:in)
14.11.2023
Patent
Elektronische Ressource
Chinesisch
Durable anti-cracking commercial concrete and preparation method thereof
| Europäisches Patentamt | 2020
Novel concrete anti-cracking waterproof durable additive and preparation method thereof
| Europäisches Patentamt | 2020
Lightweight high-strength durable anti-cracking concrete and preparation process thereof
| Europäisches Patentamt | 2023
Anti-cracking concrete and preparation method thereof
| Europäisches Patentamt | 2023
Anti-cracking concrete and preparation method thereof
| Europäisches Patentamt | 2024