A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Anti-crack road base material and preparation method thereof
The invention discloses an anti-crack road base material and a preparation method thereof, the base material depends on actual engineering, base and surface layer continuous construction, an anti-crack agent is added into a cement stabilized macadam base material, the anti-crack agent takes ardealite as a main expansion and delayed coagulation material and citric acid as an auxiliary delayed coagulation material, and the cement stabilized macadam base material is prepared by mixing the main expansion and delayed coagulation material and the auxiliary delayed coagulation material. The mass ratio of phosphogypsum to citric acid is (60-180): 1, and the anti-crack agent can prolong the initial setting time of a cement stabilizing material by 6-10 h, has micro-expansibility and compactness, and reduces the porosity performance of cement stabilized macadam. According to the base material prepared by the invention, on one hand, the setting and hardening time of a base can be delayed, so that the implementation of continuous construction can be realized on the aspect of construction process time, and on the other hand, the dry shrinkage and temperature shrinkage cracking resistance of the semi-rigid base is improved, and the early damage problem of a semi-rigid base asphalt pavement is overcome or relieved; particularly, reflection cracks and slippage diseases can be prevented.
本发明公开了一种抗裂道路基层材料及其制备方法，所述基层材料依托实际工程，基、面层连续施工，在水泥稳定碎石基层材料中加入抗裂缝剂，该抗裂缝剂为磷石膏为主要膨胀和缓凝材料，柠檬酸为辅助调凝材料，其质量比为磷石膏：柠檬酸＝60～180:1，该抗裂缝剂可以使水泥稳定材料初凝时间延长6～10h，并具有微膨胀性和致密性，减少水泥稳定碎石的孔隙率性能。本发明制备的基层材料，一方面可以延迟基层凝结硬化的时间，使得连续施工的实施在施工工艺可以时间上可以实现，另一方面，提高半刚性基层抵抗干缩、温缩开裂的性能，克服或者缓解半刚性基层沥青路面的早期破坏问题，尤其是反射裂缝与滑移病害的发生。
Anti-crack road base material and preparation method thereof
The invention discloses an anti-crack road base material and a preparation method thereof, the base material depends on actual engineering, base and surface layer continuous construction, an anti-crack agent is added into a cement stabilized macadam base material, the anti-crack agent takes ardealite as a main expansion and delayed coagulation material and citric acid as an auxiliary delayed coagulation material, and the cement stabilized macadam base material is prepared by mixing the main expansion and delayed coagulation material and the auxiliary delayed coagulation material. The mass ratio of phosphogypsum to citric acid is (60-180): 1, and the anti-crack agent can prolong the initial setting time of a cement stabilizing material by 6-10 h, has micro-expansibility and compactness, and reduces the porosity performance of cement stabilized macadam. According to the base material prepared by the invention, on one hand, the setting and hardening time of a base can be delayed, so that the implementation of continuous construction can be realized on the aspect of construction process time, and on the other hand, the dry shrinkage and temperature shrinkage cracking resistance of the semi-rigid base is improved, and the early damage problem of a semi-rigid base asphalt pavement is overcome or relieved; particularly, reflection cracks and slippage diseases can be prevented.
本发明公开了一种抗裂道路基层材料及其制备方法，所述基层材料依托实际工程，基、面层连续施工，在水泥稳定碎石基层材料中加入抗裂缝剂，该抗裂缝剂为磷石膏为主要膨胀和缓凝材料，柠檬酸为辅助调凝材料，其质量比为磷石膏：柠檬酸＝60～180:1，该抗裂缝剂可以使水泥稳定材料初凝时间延长6～10h，并具有微膨胀性和致密性，减少水泥稳定碎石的孔隙率性能。本发明制备的基层材料，一方面可以延迟基层凝结硬化的时间，使得连续施工的实施在施工工艺可以时间上可以实现，另一方面，提高半刚性基层抵抗干缩、温缩开裂的性能，克服或者缓解半刚性基层沥青路面的早期破坏问题，尤其是反射裂缝与滑移病害的发生。
Anti-crack road base material and preparation method thereof
一种抗裂道路基层材料及其制备方法
SUN YANGANG (author) / LI GUANJIE (author) / AN SHUHAO (author) / TIAN WEI (author) / PENG CHENG (author)
2022-05-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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