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A platform for research: civil engineering, architecture and urbanism
Bridge expansion joint anchoring area concrete with high crack resistance as well as preparation method and application thereof
The invention discloses high-crack-resistance bridge expansion joint anchoring area concrete as well as a preparation method and application thereof. The method comprises the following steps: weighing the following raw materials in parts by weight: 650 to 660 parts of cement, 200 to 210 parts of fly ash, 100 to 110 parts of slag powder, 100 to 110 parts of a high-activity internal curing agent, 500 to 550 parts of sand, 500 to 550 parts of stone, 18 to 20 parts of rubber powder, 50 to 60 parts of modified rubber particles, 1 to 1.2 parts of a water reducing agent, 60 to 70 parts of steel fibers, 8 to 9 parts of modified PAN fibers and 230 to 240 parts of water; cement, fly ash, slag powder, a high-activity internal curing agent, sand, stone, rubber powder, modified rubber particles, a water reducing agent and water are mixed and stirred, and a concrete mixture is obtained; and adding the steel fibers and the modified PAN fibers into the concrete mixture, and continuously stirring uniformly to obtain the high-crack-resistance bridge expansion joint anchoring area concrete. The diatomite-rice hull ash after high-temperature calcination is adopted as the high-activity internal curing agent, the modified rubber particles and the modified PAN fibers of the concrete, so that the problems that the concrete in the anchoring area of the expansion joint is easy to crack and damage, poor in durability and the like are well solved.
一种高抗裂性的桥梁伸缩缝锚固区混凝土及其制备方法和应用。该方法包括：按以下重量份计称取原料：水泥650~660份、粉煤灰200~210份、矿渣粉100~110份、高活性内养护剂100~110份、砂500~550份、石500~550份、胶粉18~20份、改性橡胶颗粒50~60份、减水剂1~1.2份、钢纤维60~70份、改性PAN纤维8~9份和水230~240份；对水泥、粉煤灰、矿渣粉、高活性内养护剂、砂、石、胶粉、改性橡胶颗粒、减水剂和水进行混合搅拌，得到混凝土拌合物；将钢纤维和改性PAN纤维加入到混凝土拌合物中，继续搅拌均匀，得到高抗裂性的桥梁伸缩缝锚固区混凝土。本公开通过采用高温煅烧后的硅藻土‑稻壳灰作为混凝土的高活性内养护剂、改性橡胶颗粒和改性PAN纤维，较好地解决了伸缩缝锚固区混凝土易开裂、破损和耐久性差等问题。
Bridge expansion joint anchoring area concrete with high crack resistance as well as preparation method and application thereof
The invention discloses high-crack-resistance bridge expansion joint anchoring area concrete as well as a preparation method and application thereof. The method comprises the following steps: weighing the following raw materials in parts by weight: 650 to 660 parts of cement, 200 to 210 parts of fly ash, 100 to 110 parts of slag powder, 100 to 110 parts of a high-activity internal curing agent, 500 to 550 parts of sand, 500 to 550 parts of stone, 18 to 20 parts of rubber powder, 50 to 60 parts of modified rubber particles, 1 to 1.2 parts of a water reducing agent, 60 to 70 parts of steel fibers, 8 to 9 parts of modified PAN fibers and 230 to 240 parts of water; cement, fly ash, slag powder, a high-activity internal curing agent, sand, stone, rubber powder, modified rubber particles, a water reducing agent and water are mixed and stirred, and a concrete mixture is obtained; and adding the steel fibers and the modified PAN fibers into the concrete mixture, and continuously stirring uniformly to obtain the high-crack-resistance bridge expansion joint anchoring area concrete. The diatomite-rice hull ash after high-temperature calcination is adopted as the high-activity internal curing agent, the modified rubber particles and the modified PAN fibers of the concrete, so that the problems that the concrete in the anchoring area of the expansion joint is easy to crack and damage, poor in durability and the like are well solved.
一种高抗裂性的桥梁伸缩缝锚固区混凝土及其制备方法和应用。该方法包括：按以下重量份计称取原料：水泥650~660份、粉煤灰200~210份、矿渣粉100~110份、高活性内养护剂100~110份、砂500~550份、石500~550份、胶粉18~20份、改性橡胶颗粒50~60份、减水剂1~1.2份、钢纤维60~70份、改性PAN纤维8~9份和水230~240份；对水泥、粉煤灰、矿渣粉、高活性内养护剂、砂、石、胶粉、改性橡胶颗粒、减水剂和水进行混合搅拌，得到混凝土拌合物；将钢纤维和改性PAN纤维加入到混凝土拌合物中，继续搅拌均匀，得到高抗裂性的桥梁伸缩缝锚固区混凝土。本公开通过采用高温煅烧后的硅藻土‑稻壳灰作为混凝土的高活性内养护剂、改性橡胶颗粒和改性PAN纤维，较好地解决了伸缩缝锚固区混凝土易开裂、破损和耐久性差等问题。
Bridge expansion joint anchoring area concrete with high crack resistance as well as preparation method and application thereof
高抗裂性的桥梁伸缩缝锚固区混凝土及其制备方法和应用
GAO YUAN (author) / HU SHAOPENG (author) / XIE ENHUI (author) / REN JINGHUA (author) / SU XINCHENG (author)
2025-01-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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