A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Concrete, preparation method thereof and sleeper
The invention discloses concrete, a preparation method thereof and a sleeper. Every m < 3 > of the concrete contains the following raw materials in parts by weight (kg): 400-500 parts of P.O 42.5 Portland cement, 40-60 parts of a composite admixture, 680-720 parts of fine aggregate, 320-360 parts of first coarse aggregate, 770-830 parts of second coarse aggregate, 4-7 parts of a water reducing agent and 110-150 parts of mixing water, wherein the particle size range of the first coarse aggregate is 5-10 mm, the particle size range of the second coarse aggregate is 10-20 mm, and both the first coarse aggregate and the second coarse aggregate are coarse aggregates with continuous size fractions; the composite admixture comprises fly ash, limestone mineral powder and pyrite cinder, and in the composite admixture, the mass percentages of the fly ash, the limestone mineral powder and the pyrite cinder are 30-40%, 40-50% and 10-30% respectively. According to the concrete, the compressive strength and the elastic modulus of the concrete are effectively improved, so that the crack generation resistance of a sleeper made of the concrete can be improved.
本发明公开一种混凝土及其制备方法、以及轨枕，每m3所述混凝土中含有以下重量份(kg)的原料：P·O 42.5硅酸盐水泥400～500份、复合掺合料40～60份、细骨料680～720份、第一粗骨料320～360份、第二粗骨料770～830份、减水剂4～7份以及拌和水110～150份；其中，所述第一粗骨料的粒径范围为5～10mm，所述第二粗骨料的粒径范围为10～20mm，且所述第一粗骨料和第二粗骨料均为连续粒级的粗骨料；所述复合掺合料包括粉煤灰、石灰岩矿粉和硫铁矿烧渣，且所述复合掺合料中，所述粉煤灰、石灰岩矿粉和硫酸矿烧渣的质量百分比分别为30～40％、40～50％和10～30％。本发明有效提高了所述混凝土的抗压强度和弹性模量，从而可以提高使用所述混凝土制成的轨枕的抗裂缝产生的能力。
Concrete, preparation method thereof and sleeper
The invention discloses concrete, a preparation method thereof and a sleeper. Every m < 3 > of the concrete contains the following raw materials in parts by weight (kg): 400-500 parts of P.O 42.5 Portland cement, 40-60 parts of a composite admixture, 680-720 parts of fine aggregate, 320-360 parts of first coarse aggregate, 770-830 parts of second coarse aggregate, 4-7 parts of a water reducing agent and 110-150 parts of mixing water, wherein the particle size range of the first coarse aggregate is 5-10 mm, the particle size range of the second coarse aggregate is 10-20 mm, and both the first coarse aggregate and the second coarse aggregate are coarse aggregates with continuous size fractions; the composite admixture comprises fly ash, limestone mineral powder and pyrite cinder, and in the composite admixture, the mass percentages of the fly ash, the limestone mineral powder and the pyrite cinder are 30-40%, 40-50% and 10-30% respectively. According to the concrete, the compressive strength and the elastic modulus of the concrete are effectively improved, so that the crack generation resistance of a sleeper made of the concrete can be improved.
本发明公开一种混凝土及其制备方法、以及轨枕，每m3所述混凝土中含有以下重量份(kg)的原料：P·O 42.5硅酸盐水泥400～500份、复合掺合料40～60份、细骨料680～720份、第一粗骨料320～360份、第二粗骨料770～830份、减水剂4～7份以及拌和水110～150份；其中，所述第一粗骨料的粒径范围为5～10mm，所述第二粗骨料的粒径范围为10～20mm，且所述第一粗骨料和第二粗骨料均为连续粒级的粗骨料；所述复合掺合料包括粉煤灰、石灰岩矿粉和硫铁矿烧渣，且所述复合掺合料中，所述粉煤灰、石灰岩矿粉和硫酸矿烧渣的质量百分比分别为30～40％、40～50％和10～30％。本发明有效提高了所述混凝土的抗压强度和弹性模量，从而可以提高使用所述混凝土制成的轨枕的抗裂缝产生的能力。
Concrete, preparation method thereof and sleeper
一种混凝土及其制备方法、以及轨枕
CHENG AIBIN (author) / CHEN YUYING (author) / ZHOU HAICHAO (author) / XU QING (author) / XIAO WEI (author) / ZHANG XIRUI (author) / RONG WENWEN (author) / HE XIAOGANG (author) / MENG WENQIANG (author) / ZHANG TIANBAO (author)
2021-11-09
Patent
Electronic Resource
Chinese
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