Concrete for bored pile and preparation process thereof
A technology of concrete and bored piles, applied in the field of concrete, can solve problems such as reduced service life, corrosion, and reduced overall strength, and achieve the effects of prolonging service life, good impermeability, and reducing impact
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Embodiment 1
[0040] Embodiment 1: a kind of concrete for bored piles, each component and its corresponding parts by weight are as shown in Table 1, cement: admixture: sand: granite: water: the mixing ratio of admixture is 1: 0.47: 2.18: 3.37: 0.57: 0.029, and in the mixed material, the weight and number ratio of fly ash and slag powder is 1: 1, and the concrete used for bored piles is prepared by the following steps:
[0041] S1, fully mixing cement, sand, granite, and mixed materials to form the first mixture;
[0042] S2, adding the admixture GXN-PC1 into water, fully mixing to form a second mixture;
[0043] S3, slowly add the second mixture obtained in step S2 to the first mixture obtained in step S1, and mix uniformly to prepare.
Embodiment 2
[0044] Embodiment 2: A kind of concrete for bored piles. The difference from Embodiment 1 is that each component and its corresponding parts by weight are shown in Table 1. Wherein, defoamer is GPE type defoamer, and the preparation step of the concrete that bored pile is used is:
[0045] S1, fully mixing cement, sand, granite, and mixed materials to form the first mixture;
[0046] S2, adding the corresponding admixture GXN-PC1 and defoamer into water, and fully mixing to form a second mixture;
[0047] S3, slowly add the second mixture obtained in step S2 to the first mixture obtained in step S1, and mix uniformly to prepare.
[0048] Among them, the cement is Yuexiu brand, the variety is P.O, and the strength grade is 42.5R, which is purchased from Guangzhou Zhujiang Cement Co., Ltd.; the granite is purchased from Qingyuan Stone Field, with a needle-like particle content of 5% and a bulk density of 1460kg / m 3 ;The origin of the sand is Xijiang, the fineness modulus is 2....
Embodiment 3
[0050] Embodiment 3: A concrete for bored piles. The difference from Embodiment 2 is that each component and its corresponding parts by weight are shown in Table 1. Among them, in the water reducer, sulfonated lignin, sulfonated The ratio of parts by weight of melamine formaldehyde resin is 2.23:1. In step S2 of preparing concrete for bored piles, the corresponding admixture GXN-PC1, defoamer, and water reducer are added to water and mixed thoroughly to form a second mixture.
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