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High-crack-resistance concrete and preparation method thereof
The invention discloses high-crack-resistance concrete and a preparation method thereof. The high-crack-resistance concrete is prepared from the following components in parts by weight: 220 to 280 parts of cement, 130 to 230 parts of mineral admixture, 635 to 705 parts of river sand, 1055 to 1125 parts of gravel, 1.15 to 4.6 parts of modified basalt fiber, 4.0 to 6.5 parts of water reducing agent and 140 to 160 parts of water, the modified basalt fiber is obtained by modifying nano SiO2 through a silane coupling agent and then mechanically mixing the modified basalt fiber with xanthan gum and cellulose ether. The prepared high-crack-resistance concrete has excellent mechanical properties and crack resistance, the modified basalt fibers and the cement concrete have higher mechanical occlusal force and chemical bonding force, the fibers and a matrix are bonded more tightly, and the mechanical properties of the cement concrete are improved. When the concrete is cracked, the disorderly distributed modified basalt fibers play a powerful role in dragging the development of cracks, so that the crack resistance of the concrete is greatly improved; meanwhile, the water-retaining property and cohesiveness of the concrete are improved, and the bleeding phenomenon of the concrete is improved.
本发明公开了一种高抗裂混凝土及其制备方法，其高抗裂混凝土按照重量份数包括：水泥220～280份、矿物掺和料130～230份、河砂635～705份、碎石1055～1125份、改性玄武岩纤维1.15～4.6份、减水剂4.0～6.5份、水140～160份；所述改性玄武岩纤维采用纳米SiO2通过硅烷偶联剂对其进行改性，再与黄原胶和纤维素醚机械混合得到。本发明制备的高抗裂混凝土具有优异的力学性能和抗裂性能，其中改性玄武岩纤维与水泥混凝土有更强的机械咬合力和化学键合力，纤维与基体的粘接更为紧密，提高了水泥混凝土的力学性能。而且当混凝土发生开裂时，乱向分布的改性玄武岩纤维对裂缝的发展起到了强有力的牵扯作用，混凝土的抗裂性得到了较大幅度的提高；同时提高了混凝土的保水性和粘聚性，改善了混凝土泌水现象。
High-crack-resistance concrete and preparation method thereof
The invention discloses high-crack-resistance concrete and a preparation method thereof. The high-crack-resistance concrete is prepared from the following components in parts by weight: 220 to 280 parts of cement, 130 to 230 parts of mineral admixture, 635 to 705 parts of river sand, 1055 to 1125 parts of gravel, 1.15 to 4.6 parts of modified basalt fiber, 4.0 to 6.5 parts of water reducing agent and 140 to 160 parts of water, the modified basalt fiber is obtained by modifying nano SiO2 through a silane coupling agent and then mechanically mixing the modified basalt fiber with xanthan gum and cellulose ether. The prepared high-crack-resistance concrete has excellent mechanical properties and crack resistance, the modified basalt fibers and the cement concrete have higher mechanical occlusal force and chemical bonding force, the fibers and a matrix are bonded more tightly, and the mechanical properties of the cement concrete are improved. When the concrete is cracked, the disorderly distributed modified basalt fibers play a powerful role in dragging the development of cracks, so that the crack resistance of the concrete is greatly improved; meanwhile, the water-retaining property and cohesiveness of the concrete are improved, and the bleeding phenomenon of the concrete is improved.
本发明公开了一种高抗裂混凝土及其制备方法，其高抗裂混凝土按照重量份数包括：水泥220～280份、矿物掺和料130～230份、河砂635～705份、碎石1055～1125份、改性玄武岩纤维1.15～4.6份、减水剂4.0～6.5份、水140～160份；所述改性玄武岩纤维采用纳米SiO2通过硅烷偶联剂对其进行改性，再与黄原胶和纤维素醚机械混合得到。本发明制备的高抗裂混凝土具有优异的力学性能和抗裂性能，其中改性玄武岩纤维与水泥混凝土有更强的机械咬合力和化学键合力，纤维与基体的粘接更为紧密，提高了水泥混凝土的力学性能。而且当混凝土发生开裂时，乱向分布的改性玄武岩纤维对裂缝的发展起到了强有力的牵扯作用，混凝土的抗裂性得到了较大幅度的提高；同时提高了混凝土的保水性和粘聚性，改善了混凝土泌水现象。
High-crack-resistance concrete and preparation method thereof
一种高抗裂混凝土及其制备方法
LI LINXIANG (author) / TAN YANBIN (author) / QI JING (author) / WU JUNJIE (author) / WANG ZHIYONG (author) / YANG LU (author) / GE XIN (author) / ZHENG YONGJIE (author) / WANG HAO (author) / YUE CHENGJUN (author)
2024-04-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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