Pumping impervious super-retarding concrete and preparation method thereof

A concrete and ultra-retarding technology, applied in the field of building materials, can solve the problems of high production cost, many production raw materials, difficult process control, etc., and achieve the effect of reducing the heat of hydration

Inactive Publication Date: 2017-03-22
鞍钢房地产开发集团有限公司
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Problems solved by technology

Patent CN102924017A discloses a kind of ultra-retarded concrete, which has many raw materials, difficult process control and high production cost

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  • Pumping impervious super-retarding concrete and preparation method thereof

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Embodiment Construction

[0016] Below in conjunction with embodiment the present invention is further described:

[0017] The following examples describe the present invention in detail. These examples are only to describe the best embodiment of the present invention, and do not limit the scope of the present invention.

[0018] A pumping anti-seepage super retarded concrete batching is shown in Table 1;

[0019] Table 1: C30 pumping anti-seepage super retarded concrete mix ratio (kg / m 3 )

[0020] serial number Cement 32.5 Micropowder sand gravel water Super retarded pumping agent Example 1 280 120 705 1057 180 8 Example 2 300 130 755 1134 192 9

[0021] 1) According to the mass percentage of triethanolamine, sodium gluconate and high-efficiency superplasticizer of 25%, 25%, and 50%, the super-retarding pumping agent was prepared in the admixture factory in advance, and the high-efficiency superplasticizer is UNF-5 retarding type High-efficiency wate...

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Abstract

The invention relates to pumping impervious super-retarding concrete. The mix proportion of cement to micro-powder to sand to gravel to water to a super-retarding pumping aid of the concrete is 1:1.43:2.52:3.78:0.64:0.03, the cement is P.S.B32.5 level Portland blast furnace slag cement, the micro-powder is S75 superfine slag powder, and the super-retarding pumping aid is compounded from triethanolamine, sodium gluconate and superplasticizer according to the mass percents of 25%, 25% and 50%. The pumping impervious super-retarding concrete is high-performance concrete integrating pumpability, impermeability and super-retarding performance, has construction continuity, and meets special construction requirements. Novel and special bonding-retarding prestress is formed when the pumping impervious super-retarding concrete is applied to mass concrete construction, occlusive pile construction and a bond-free prestress cement concrete system. The pumping impervious super-retarding concrete is used for preventing cracks and cold joints and controlling slump losses during concrete construction.

Description

technical field [0001] The invention relates to building materials, in particular to a pumping anti-seepage super retarded concrete and a preparation method thereof. Background technique [0002] In the hot summer mass concrete construction and bored occlusal pile engineering, a large amount of concrete is poured continuously, and the concrete loses too quickly over time and cracks appear. Therefore, retarded concrete should be used in construction. Super-retarded concrete is used according to engineering needs. [0003] Super retarded concrete is a kind of concrete specially formulated to meet special construction requirements with an initial setting time of more than 60 hours and a strength of not less than the design strength level at 28 days. Patent CN102924017A discloses a kind of super-retarded concrete, which has many raw materials, difficult process control and high production cost. Contents of the invention [0004] The technical problem to be solved by the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/141C04B14/06C04B14/02C04B24/122C04B24/10C04B2103/302
Inventor 徐明君高前时维华石爽王鹏奎
Owner 鞍钢房地产开发集团有限公司
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