A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High performance expandable pre-stressed concrete and preparation method thereof
The invention belongs to the technical field of civil engineering, and specifically relates to a high performance expandable pre-stressed concrete and a preparation method thereof. The concrete comprises a cementing material, modified water-absorbing zeolite, an expanding agent, a water reducer, water, fine aggregate, and coarse aggregate. The modified water-absorbing zeolite is modified in two steps and is saturated by water in vacuum. An in-concrete curing technology and a contraction compensating technology are used, under a low water-cement ratio, an expanding agent can be fully hydrated;the problem that an expanding agent cannot be used in high strength concrete with a low water-cement ratio is solved; and the problem of strength loss of concrete in the later period due to excessiveexpanding agent is also solved.
本发明属于土木工程技术领域，具体涉及一种高性能膨胀预应力混凝土及其制备方法，该混凝土的成分包括胶凝材料、改性吸水沸石、膨胀剂、减水剂、水、细骨料和粗骨料；所述改性吸水沸石通过两步改性后真空饱水而得。该混凝土综合使用混凝土内养护技术和收缩补偿技术，在维持较低水灰比的条件下仍能够使膨胀剂充分水化，解决了膨胀剂不能在低水灰比的高强混凝土中应用的问题，以及过量使用膨胀剂导致混凝土后期强度损失等工程难题。
High performance expandable pre-stressed concrete and preparation method thereof
The invention belongs to the technical field of civil engineering, and specifically relates to a high performance expandable pre-stressed concrete and a preparation method thereof. The concrete comprises a cementing material, modified water-absorbing zeolite, an expanding agent, a water reducer, water, fine aggregate, and coarse aggregate. The modified water-absorbing zeolite is modified in two steps and is saturated by water in vacuum. An in-concrete curing technology and a contraction compensating technology are used, under a low water-cement ratio, an expanding agent can be fully hydrated;the problem that an expanding agent cannot be used in high strength concrete with a low water-cement ratio is solved; and the problem of strength loss of concrete in the later period due to excessiveexpanding agent is also solved.
本发明属于土木工程技术领域，具体涉及一种高性能膨胀预应力混凝土及其制备方法，该混凝土的成分包括胶凝材料、改性吸水沸石、膨胀剂、减水剂、水、细骨料和粗骨料；所述改性吸水沸石通过两步改性后真空饱水而得。该混凝土综合使用混凝土内养护技术和收缩补偿技术，在维持较低水灰比的条件下仍能够使膨胀剂充分水化，解决了膨胀剂不能在低水灰比的高强混凝土中应用的问题，以及过量使用膨胀剂导致混凝土后期强度损失等工程难题。
High performance expandable pre-stressed concrete and preparation method thereof
一种高性能膨胀预应力混凝土及其制备方法
HOU DONGWEI (author) / HAN YUDONG (author) / SUN GUOHUI (author) / SUN HEPING (author) / YUAN ZHEN (author) / LIU WEIJING (author) / XU BING (author) / LYU XINMING (author) / LIU DONGSHENG (author) / GAO WENLIANG (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
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| Engineering Index Backfile | 1948
- PRE-STRESSED CONCRETE STRUCTURE AND MANUFACTURING METHOD THEREOF
| European Patent Office | 2020