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Mass concrete block, pouring construction method and dam obtained through pouring

A large-volume concrete and concrete technology, applied in construction, artificial islands, water conservancy projects, etc., can solve problems that affect the safety and normal use of structures, and large-volume concrete temperature cracks, so as to improve the flexural strength and anti-crack performance, reduce The effect of cracking and simple preparation process

Active Publication Date: 2022-01-21
浙江艮威水利建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the temperature difference between the inside and outside of the mass concrete is large, it will cause temperature cracks in the mass concrete, which will affect the safety and normal use of the structure.

Method used

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  • Mass concrete block, pouring construction method and dam obtained through pouring
  • Mass concrete block, pouring construction method and dam obtained through pouring
  • Mass concrete block, pouring construction method and dam obtained through pouring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0052] A mass concrete block, ref. figure 1 The above-mentioned large-volume concrete block is obtained by tamping holes on the surface of the uncured large-volume concrete block after pouring the concrete slurry, and it is required to have 9 holes 1 evenly distributed on the surface of the large-volume concrete block per square meter, and each hole 1 hole The diameter is controlled at about 1cm. The above-mentioned large-volume concrete block after pouring and molding contains two porous stainless steel plates 2 arranged at intervals, and the two adjacent porous stainless steel plates 2 are fixed by plastic binding. There are a plurality of reinforcement cages 3 between two adjacent porous stainless steel plates 2, and the reinforcement cages 3 and the porous stainless steel plates 2 are fixed by binding steel wires.

[0053] The concrete slurry in this embodiment includes the components and dosages shown in Table 1. Among them, the fine aggregate is freshwater sand (namely...

Embodiment 2

[0061] A large-volume concrete block, which differs from Example 1 in that: the above-mentioned large-volume concrete block after pouring and molding contains three porous stainless steel plates 2 arranged at intervals, and plastic is used between two adjacent porous stainless steel plates 2 Binding and fixing, the above hole 1 communicates with the opening of the porous stainless steel plate 2. There are a plurality of reinforcement cages 3 between two adjacent porous stainless steel plates 2, and the reinforcement cages 3 and the porous stainless steel plates 2 are bound and fixed by plastic cable ties. Wherein, there are three holes 1 on the surface of the large-volume concrete block per square meter, and the diameter of each hole 1 is controlled at about 3 cm.

[0062] The components and dosage of the concrete slurry are different, and the components and dosage of the concrete slurry in this embodiment are shown in Table 1. Among them, the fine aggregate is freshwater san...

Embodiment 4-7

[0079] A large-volume concrete block, the difference from Example 1 is that the components and dosage of the concrete slurry are different, and the components and dosage of the concrete slurry in this example are shown in Table 1.

[0080] Table 1 Components and consumption (kg) of concrete slurry embodiment 1-7

[0081]

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Abstract

The invention relates to the technical field of concrete construction, and particularly discloses a mass concrete block, a pouring construction method and a dam obtained through pouring. The mass concrete block is obtained by tamping holes in the surface of the unsolidified mass concrete block after concrete slurry is poured, 3-12 holes are required to be formed in the surface of each square meter of the mass concrete block, and the hole diameter of each hole is controlled to be 0.5-3 cm; the concrete slurry is prepared from the following raw materials in parts by weight: 30-40 parts of Portland cement, 10-15 parts of steel fiber, 15-20 parts of fine aggregate, 35-40 parts of coarse aggregate, 0.1-0.3 part of a polycarboxylic acid water reducer, 1-3 parts of a corrosion inhibitor and 6-12 parts of water; the corrosion inhibitor is selected from an amino alcohol corrosion inhibitor. The mass concrete block has the effect of resisting temperature cracks, and the breaking strength and the cracking resistance of the mass concrete block can be effectively improved.

Description

technical field [0001] The present application relates to the technical field of concrete construction, in particular to a large-volume concrete block, a pouring construction method and a dam obtained by pouring. Background technique [0002] Mass concrete, English is concrete in mass, my country's "Mass Concrete Construction Standard" GB50496-2018 stipulates: the minimum geometric size of the concrete structure entity is not less than 1m in mass concrete, or it is expected to be hydrated due to the cementitious material in the concrete Concrete that causes harmful cracks due to temperature changes and shrinkage is called mass concrete. [0003] Modern buildings often involve large-volume concrete construction, such as high-rise building foundations, large-scale equipment foundations, water conservancy dams, etc. Its main feature is its large size, and the size of any direction of the smallest section is at least 1m. Its surface coefficient is relatively small, the release ...

Claims

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Application Information

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IPC IPC(8): C04B28/04E02D27/40E02D29/02C04B111/34
CPCC04B28/04E02D29/02E02D29/025E02D27/40C04B2111/343C04B2201/50E02D2300/002E02D2300/0029E02D2300/0064C04B14/48C04B14/06C04B14/02C04B24/122C04B2103/302
Inventor 阮海栋应军业邵永刚朱沿君王超群王约栋邱宝峰
Owner 浙江艮威水利建设有限公司
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