Pump concrete and preparation method thereof

A technology for pumping concrete and concrete, used in the field of building materials, can solve the problems of rough surface, many edges and corners, and large internal friction resistance of slag, and achieve the effects of good toughness, improved workability, and high strength

Inactive Publication Date: 2016-10-12
CHINA THIRD METALLURGICAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production of iron and steel enterprises, a large amount of blast furnace heavy slag is produced every year. After crushing and screening, slag sand and slag are produced. The slag of the specification can be effectively reused. The slag of the specification has been used in the existing technology of concrete production, but due to The surface of slag is rough, with many edges and corners, large internal friction resistance, and high concrete bleeding rate; therefore, the use of slag sand instead of traditional river sand to produce all-slag concrete is yet to be developed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A pumping concrete, comprising the following components in parts by weight: cement 250, vitrified microbeads 200, slag aggregate 400, slag fine powder 80, diatomite 20-30, redispersible latex powder 8, starch ether 7. Attapulgite powder 2.5, vermiculite powder 2, boric acid 3, water 150; the amount of concrete pumping agent added is 4% of the cement weight;

[0018] The particle size of the slag micropowder is required to have a specific surface area ≥ 350m 3 / Kg; the slag aggregate is formulated according to the following particle size distribution in proportion by weight:

[0019] 3 parts by weight of slag aggregate with particle size ≥ 25mm

[0020] 16mm

[0021] 20 parts by weight of slag aggregate with a particle size of ≤16 mm.

[0022] The concrete pumping agent is NSF-5 naphthalene series pumping agent.

[0023] Said preparation method of pumping concrete comprises: except cement and pumping agent, said raw m...

Embodiment 2

[0025] A pumping concrete, comprising the following components in parts by weight: cement 200, vitrified microbeads 150, slag aggregate 300, slag fine powder 50, diatomite 30, redispersible latex powder 10, starch ether 10, Attapulgite soil powder 2, vermiculite powder 3, boric acid 3, water 200; the amount of concrete pumping agent added is 3% of the cement weight;

[0026] The particle size of the slag micropowder is required to have a specific surface area ≥ 350m 3 / Kg; the slag aggregate is formulated according to the following particle size distribution in proportion by weight:

[0027] 1 part by weight of slag aggregate with particle size ≥ 25mm

[0028] 16mm

[0029] 20 parts by weight of slag aggregate with a particle size of ≤16 mm.

[0030] The concrete pumping agent is NSF-5B naphthalene series pumping agent.

[0031] Said preparation method of pumping concrete comprises: except cement and pumping agent, said raw...

Embodiment 3

[0033] A pumping concrete, comprising the following components in parts by weight: cement 300, vitrified microbeads 250, slag aggregate 500, slag fine powder 100, diatomite 30, redispersible latex powder 10, starch ether 10, Attapulgite soil powder 3, vermiculite powder 2, boric acid 2, water 200; the amount of concrete pumping agent added is 5% of the cement weight;

[0034] The particle size of the slag micropowder is required to have a specific surface area ≥ 350m 3 / Kg; the slag aggregate is formulated according to the following particle size distribution in proportion by weight:

[0035] 5 parts by weight of slag aggregate with particle size ≥ 25mm

[0036] 30 parts by weight of slag aggregate of 16mm

[0037] 20 parts by weight of slag aggregate with a particle size of ≤16mm.

[0038] The concrete pumping agent is USF-2 naphthalene series pumping agent.

[0039] Said preparation method of pumping concrete comprises: except cement and pumping agent, sa...

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Abstract

The invention discloses pump concrete and a preparation method thereof. The pump concrete is prepared from, by weight, 200-300 parts of cement, 150-250 parts of vitrified micro bubbles, 300-500 parts of cinder aggregate, 50-100 parts of superfine slag powder, 20-30 parts of diatomite, 5-10 parts of redispersible latex powder, 5-10 parts of starch ether, 2-3 parts of attapulgite powder, 2-3 parts of vermiculite powder, 2-3 parts of boric acid and 100-200 parts of water, wherein a concrete pumping agent addition amount is 3-5% of the weight of cement. By adoption of the slag powder as a raw material and adoption of a modifier, workability of full slag concrete is improved, and fluidity is higher than 200mm and reaches pumping requirements.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a pumping concrete and a preparation method thereof. Background technique [0002] The raw materials used in the usual concrete production are crushed stones as aggregates, and then mixed with sand, cement, admixtures, and water. In the production of iron and steel enterprises, a large amount of blast furnace heavy slag is produced every year. After crushing and screening, slag sand and slag are produced. The slag of the specification can be effectively reused. The slag of the specification has been used in the existing technology of concrete production, but due to The surface of slag is rough, with many edges and corners, large internal friction resistance, and high bleeding rate of concrete; therefore, the use of slag sand instead of traditional river sand to produce all-slag concrete remains to be developed. [0003] Slag powder is a waste in the metallurgical industry. If t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/14C04B20/00
CPCC04B20/0076C04B28/00C04B2111/00146C04B14/24C04B18/141C04B14/08C04B2103/0057C04B24/383C04B14/102C04B14/202C04B22/0013C04B22/002C04B2103/0068Y02W30/91
Inventor 徐晓军丁博海周玉民王若臣潘妮红董文婷吕涛
Owner CHINA THIRD METALLURGICAL GRP
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