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Mask fiber reinforced concrete and preparation method thereof
The invention provides fiber reinforced concrete for a mask. The fiber reinforced concrete comprises 420-440 parts of cement; 670 to 710 parts of natural sand; 1140 to 1180 parts of broken stone; 50 to 55 parts of silica fume; 2-3 parts of a water reducing agent; 110 to 130 parts of water; and 0.4 to 2.7 parts of mask fiber. The preparation method of the mask fiber reinforced concrete comprises the following steps: treating mask fibers for later use; the preparation method comprises the following steps: mixing and stirring natural sand and gravel for 2 minutes, adding cement and silica fume, and continuously stirring for 3 minutes to obtain a mixture A; a water reducing agent and water are mixed and stirred for 2 min, mask fibers are added, stirring is conducted for 4 min, and a mixture B is obtained; uniformly mixing the mixture A and the mixture B to obtain a mixture C; and pouring the mixture C into a mold, and performing standard curing on the test block for 28 days to obtain the mask fiber reinforced concrete. The mechanical property of the concrete can be effectively improved by doping the mask fibers, the polypropylene fibers in the mask are uniformly distributed in the concrete in a three-dimensional network structure due to the chemical stability and self-dispersity of the polypropylene fibers in the mask, expansion of cracks can be prevented, and the tensile strength, bending resistance and toughness of the mask are effectively improved.
本发明提出一种口罩纤维增强混凝土，包括水泥420‑440份；天然砂670‑710份；碎石1140‑1180份；硅灰50‑55份；减水剂2‑3份；水110‑130份；口罩纤维0.4‑2.7份。一种口罩纤维增强混凝土的制备方法，处理口罩纤维，备用；将天然砂和碎石混合搅拌2 min，再加入水泥和硅灰继续搅拌3 min,得到混合物A；将减水剂和水混合搅拌2 min后加入口罩纤维并搅拌4 min,得到混合物B；将混合物A和混合物B混合均匀得到混合物C；将混合物C倒入模具，并对试块进行标准养护28d后，得到所述口罩纤维增强混凝土。通过掺加口罩纤维能有效提高混凝土的力学性能，口罩中聚丙烯纤维的化学稳定性和自分散性使其以三维网状结构均匀地分布在混凝土中，可以阻止裂缝的扩大，并有效地提升其抗拉、抗弯、韧性。
Mask fiber reinforced concrete and preparation method thereof
The invention provides fiber reinforced concrete for a mask. The fiber reinforced concrete comprises 420-440 parts of cement; 670 to 710 parts of natural sand; 1140 to 1180 parts of broken stone; 50 to 55 parts of silica fume; 2-3 parts of a water reducing agent; 110 to 130 parts of water; and 0.4 to 2.7 parts of mask fiber. The preparation method of the mask fiber reinforced concrete comprises the following steps: treating mask fibers for later use; the preparation method comprises the following steps: mixing and stirring natural sand and gravel for 2 minutes, adding cement and silica fume, and continuously stirring for 3 minutes to obtain a mixture A; a water reducing agent and water are mixed and stirred for 2 min, mask fibers are added, stirring is conducted for 4 min, and a mixture B is obtained; uniformly mixing the mixture A and the mixture B to obtain a mixture C; and pouring the mixture C into a mold, and performing standard curing on the test block for 28 days to obtain the mask fiber reinforced concrete. The mechanical property of the concrete can be effectively improved by doping the mask fibers, the polypropylene fibers in the mask are uniformly distributed in the concrete in a three-dimensional network structure due to the chemical stability and self-dispersity of the polypropylene fibers in the mask, expansion of cracks can be prevented, and the tensile strength, bending resistance and toughness of the mask are effectively improved.
本发明提出一种口罩纤维增强混凝土，包括水泥420‑440份；天然砂670‑710份；碎石1140‑1180份；硅灰50‑55份；减水剂2‑3份；水110‑130份；口罩纤维0.4‑2.7份。一种口罩纤维增强混凝土的制备方法，处理口罩纤维，备用；将天然砂和碎石混合搅拌2 min，再加入水泥和硅灰继续搅拌3 min,得到混合物A；将减水剂和水混合搅拌2 min后加入口罩纤维并搅拌4 min,得到混合物B；将混合物A和混合物B混合均匀得到混合物C；将混合物C倒入模具，并对试块进行标准养护28d后，得到所述口罩纤维增强混凝土。通过掺加口罩纤维能有效提高混凝土的力学性能，口罩中聚丙烯纤维的化学稳定性和自分散性使其以三维网状结构均匀地分布在混凝土中，可以阻止裂缝的扩大，并有效地提升其抗拉、抗弯、韧性。
Mask fiber reinforced concrete and preparation method thereof
一种口罩纤维增强混凝土及其制备方法
YUAN YUQING (author) / ZHANG XIAN (author) / HU HAILONG (author) / ZHOU BINGCEN (author) / CHEN YONGSHENG (author) / CHEN JUNYANG (author) / LI SHIHAO (author)
2024-07-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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