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C250 reactive powder concrete capable of preventing high-temperature burst as well as preparation method and molding maintenance method of C250 reactive powder concrete
The invention discloses C250 reactive powder concrete capable of preventing high-temperature burst as well as a preparation method and a molding maintenance method of the C250 reactive powder concrete. The invention belongs to the field of civil engineering. The technical problems that existing concrete is low in strength, a preparation method of high-strength concrete is immature, and high-temperature burst is likely to happen are solved. The product is prepared by stirring cement, silica fume, slag, quartz sand, quartz powder, steel fibers, a water reducing agent and water. The molding maintenance method is carried out by adopting a mode of steam maintenance and dry heat maintenance in sequence. The compressive strength of the C250 reactive powder concrete can reach 250 MPa, the C250 reactive powder concrete has wide application value in dome structures and arch structures mainly under pressure, the structural span can be obviously increased, and the structural manufacturing cost isreduced. The water content is lower than 0.4-0.5%, RPC high-temperature bursting can be effectively avoided, and the fire safety of the structure is obviously improved. In addition, the maintenance time is saved, the construction cost is reduced, and application and popularization are facilitated.
一种防高温爆裂C250活性粉末混凝土及其制备和成型养护方法。本发明属于土木工程领域。本发明解决了现有混凝土强度较低、高强度混凝土的制备方法不成熟且易发生高温爆裂的技术问题。产品由由水泥、硅灰、矿渣、石英砂、石英粉、钢纤维、减水剂和水经搅拌制备而成。成型养护方法采用先蒸汽养护再干热养护的方式进行。本发明的C250活性粉末混凝土，其抗压强度可达250MPa，在受压为主的穹顶结构、拱形结构中具有广泛应用价值，可明显增加结构跨度，降低结构造价。其含水率低于0.4～0.5％，可有效避免RPC高温爆裂，明显提升该类结构的火灾安全，此外本发明的方法节省了养护时间，还降低了工程造价，便于推广应用。
C250 reactive powder concrete capable of preventing high-temperature burst as well as preparation method and molding maintenance method of C250 reactive powder concrete
The invention discloses C250 reactive powder concrete capable of preventing high-temperature burst as well as a preparation method and a molding maintenance method of the C250 reactive powder concrete. The invention belongs to the field of civil engineering. The technical problems that existing concrete is low in strength, a preparation method of high-strength concrete is immature, and high-temperature burst is likely to happen are solved. The product is prepared by stirring cement, silica fume, slag, quartz sand, quartz powder, steel fibers, a water reducing agent and water. The molding maintenance method is carried out by adopting a mode of steam maintenance and dry heat maintenance in sequence. The compressive strength of the C250 reactive powder concrete can reach 250 MPa, the C250 reactive powder concrete has wide application value in dome structures and arch structures mainly under pressure, the structural span can be obviously increased, and the structural manufacturing cost isreduced. The water content is lower than 0.4-0.5%, RPC high-temperature bursting can be effectively avoided, and the fire safety of the structure is obviously improved. In addition, the maintenance time is saved, the construction cost is reduced, and application and popularization are facilitated.
一种防高温爆裂C250活性粉末混凝土及其制备和成型养护方法。本发明属于土木工程领域。本发明解决了现有混凝土强度较低、高强度混凝土的制备方法不成熟且易发生高温爆裂的技术问题。产品由由水泥、硅灰、矿渣、石英砂、石英粉、钢纤维、减水剂和水经搅拌制备而成。成型养护方法采用先蒸汽养护再干热养护的方式进行。本发明的C250活性粉末混凝土，其抗压强度可达250MPa，在受压为主的穹顶结构、拱形结构中具有广泛应用价值，可明显增加结构跨度，降低结构造价。其含水率低于0.4～0.5％，可有效避免RPC高温爆裂，明显提升该类结构的火灾安全，此外本发明的方法节省了养护时间，还降低了工程造价，便于推广应用。
C250 reactive powder concrete capable of preventing high-temperature burst as well as preparation method and molding maintenance method of C250 reactive powder concrete
一种防高温爆裂C250活性粉末混凝土及其制备和成型养护方法
RONG QIN (author) / HOU XIAOMENG (author) / LIN LI (author) / LU SHUNAN (author)
2020-05-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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