Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete capable of improving crack resistance and preparation method thereof
The invention discloses concrete capable of improving crack resistance and a preparation method thereof, and the concrete is prepared from the following materials in parts by weight: 300-400 parts of cement, 400-500 parts of coarse and fine aggregate, 60-100 parts of anti-crack fiber, 120-200 parts of active mineral fine admixture, 100-200 parts of black chromium coating and 150-280 parts of limestone, the preparation method comprises the following steps: firstly, preparing cement, coarse and fine aggregate, anti-crack fiber, a water reducing agent, an active mineral fine admixture, a black chromium coating, limestone and other raw materials to a certain amount, then storing and placing the raw materials in a low-temperature shady and cool area, then carrying out cooling operation, and reducing the initial temperature of the material by using relatively low-temperature cooling water during stirring and mixing so as to obtain a mixed material; the temperature of the mixture is correspondingly reduced. According to the concrete capable of improving the crack resistance and the preparation method of the concrete, in the preparation process, mixing operation is carried out by using mixed water with the temperature of-10 DEG C to 4 DEG C, and meanwhile, the raw materials are preliminarily refrigerated, so that generated heat is conveniently reduced in the later mixing process, large temperature difference stress is avoided, and cracks are prevented from being generated on the surface of the concrete.
本发明公开了一种可提高抗裂性的混凝土及其制备方法，由以下材料的重量份的成分组成：水泥300‑400份、粗细骨料400‑500份、抗裂纤维60‑100份、活性矿物细掺合料120‑200份、黑铬涂层100‑200份和石灰石150‑280份，先对水泥、粗细骨料、抗裂纤维、减水剂、活性矿物细掺合料、黑铬涂层、石灰石等原料进行一定量的准备，然后再将原料储存放置在低温阴凉的区域，接着进行降温操作，在搅拌混合时用温度较低的冷却水，降低材料的初始温度，相应降低了拌合物的温度。该可提高抗裂性的混凝土及其制备方法在制备的过程中通过使用‑10~4℃的混合水进行混合作业，同时也对原料初步进行了冷藏处理，从而便于后期混合时减少产生的热量，避免引起较大的温差应力，从而避免混凝土表面产生裂缝。
Concrete capable of improving crack resistance and preparation method thereof
The invention discloses concrete capable of improving crack resistance and a preparation method thereof, and the concrete is prepared from the following materials in parts by weight: 300-400 parts of cement, 400-500 parts of coarse and fine aggregate, 60-100 parts of anti-crack fiber, 120-200 parts of active mineral fine admixture, 100-200 parts of black chromium coating and 150-280 parts of limestone, the preparation method comprises the following steps: firstly, preparing cement, coarse and fine aggregate, anti-crack fiber, a water reducing agent, an active mineral fine admixture, a black chromium coating, limestone and other raw materials to a certain amount, then storing and placing the raw materials in a low-temperature shady and cool area, then carrying out cooling operation, and reducing the initial temperature of the material by using relatively low-temperature cooling water during stirring and mixing so as to obtain a mixed material; the temperature of the mixture is correspondingly reduced. According to the concrete capable of improving the crack resistance and the preparation method of the concrete, in the preparation process, mixing operation is carried out by using mixed water with the temperature of-10 DEG C to 4 DEG C, and meanwhile, the raw materials are preliminarily refrigerated, so that generated heat is conveniently reduced in the later mixing process, large temperature difference stress is avoided, and cracks are prevented from being generated on the surface of the concrete.
本发明公开了一种可提高抗裂性的混凝土及其制备方法，由以下材料的重量份的成分组成：水泥300‑400份、粗细骨料400‑500份、抗裂纤维60‑100份、活性矿物细掺合料120‑200份、黑铬涂层100‑200份和石灰石150‑280份，先对水泥、粗细骨料、抗裂纤维、减水剂、活性矿物细掺合料、黑铬涂层、石灰石等原料进行一定量的准备，然后再将原料储存放置在低温阴凉的区域，接着进行降温操作，在搅拌混合时用温度较低的冷却水，降低材料的初始温度，相应降低了拌合物的温度。该可提高抗裂性的混凝土及其制备方法在制备的过程中通过使用‑10~4℃的混合水进行混合作业，同时也对原料初步进行了冷藏处理，从而便于后期混合时减少产生的热量，避免引起较大的温差应力，从而避免混凝土表面产生裂缝。
Concrete capable of improving crack resistance and preparation method thereof
一种可提高抗裂性的混凝土及其制备方法
PAN PINGPING (Autor:in)
07.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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