Roller-compacted concrete and preparation method thereof

A technology of roller compacted concrete and mixture, which is applied in the field of concrete, and can solve the problems of unsatisfactory compressive and flexural properties of concrete, insufficient durability, and increased concrete preparation costs, and achieve good durability, reduced dosage, and reduced costs.

Inactive Publication Date: 2019-04-02
武汉中阳明建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This concrete solves the problem of insufficient durability of concrete, but a large amount of fly ash is used in its formula, which increase

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Select surface dry specific gravity as 2.2g / cm 3 Sand; select surface dry specific gravity of 2.3g / cm 3 , Crushed stone with a particle size of 5mm.

[0040] Take by weighing 132kg cement, 20kg fly ash, 17kg limestone powder, 545kg gravel and 400kg sand, wherein the ratio of coarse sand to fine sand is 3:1; and mix it uniformly to obtain a mixture one;

[0041] Take by weighing 50g rosin soap, 200g calcium lignosulfonate, 500g anti-crack fiber and 1.635kg silicone zirconium, mix well weighed rosin soap, calcium lignosulfonate, anti-crack fiber and silicone zirconium to obtain mix two;

[0042] Stir Mixture 1 and Mixture 2 evenly, and add 87.8kg of water into them, and stir evenly to obtain roller compacted concrete.

Embodiment 2

[0044] Select surface dry specific gravity as 2.5g / cm 3 Sand; select surface dry specific gravity of 2.5g / cm 3 , gravel with a particle size of 7mm.

[0045] Take by weighing 135kg cement, 24kg fly ash, 21kg limestone powder, 470kg gravel and 355kg sand, wherein the ratio of coarse sand to fine sand is 3.4:1; and mix it uniformly to obtain a mixture one;

[0046] Take by weighing 100g rosin soap, 300g calcium lignosulfonate, 1kg anti-crack fiber and 1.3kg silicone zirconium, mix well weighed rosin soap, calcium lignosulfonate, anti-crack fiber and silicone zirconium to obtain mix two;

[0047] Stir Mixture 1 and Mixture 2 evenly, and add 88.3kg of water into them, and stir evenly to obtain roller compacted concrete.

Embodiment 3

[0049] Select surface dry specific gravity as 2.8g / cm 3 Sand; select surface dry specific gravity of 2.7g / cm 3 , Crushed stone with a particle size of 15mm.

[0050] Take by weighing 130kg cement, 20kg fly ash, 19kg limestone powder, 546kg gravel and 447kg sand, wherein the ratio of coarse sand to fine sand is 3.6:1; and mix it uniformly to obtain a mixture one;

[0051] Take by weighing 250g rosin soap, 750g calcium lignosulfonate, 1.3kg crack-resistant fiber and 235g silicone zirconium, mix well weighed rosin soap, calcium lignosulfonate, crack-resistant fiber and silicone zirconium, and get mix two;

[0052] Stir Mixture 1 and Mixture 2 evenly, and add 87.9kg of water into them, and stir evenly to obtain roller compacted concrete.

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Abstract

The invention discloses roller-compacted concrete and a preparation method thereof, and relates to the technical field of concrete. The roller-compacted concrete is prepared from the following raw materials in parts by weight: 258-270 parts of cement, 40-48 parts of fly ash, 34-42 parts of an admixture, 1650-1986 parts of filler, 0.5-3 parts of an air entraining agent, 1-2.6 parts of an anti-cracking agent, 0.47-3.27 parts of a waterproof agent and 175.2-189.4 parts of water. According to the roller-compacted concrete, the usage amount of the fly ash can be reduced, cost is reduced, and good compression resistance and bending resistance are achieved. The preparation method comprises the following steps: weighing the components according to a set ratio, and uniformly mixing the cement, thefly ash, the admixture and the filler to obtain a mixed material I; uniformly mixing the air entraining agent, the anti-cracking agent and the waterproof agent to obtain a mixture II; and uniformly mixing the mixture I, the mixture II and water by stirring to obtain the compacted concrete. The preparation method has simple steps and is easy to implement.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a roller compacted concrete and a preparation method thereof. Background technique [0002] Roller compacted concrete is a kind of cement-poor concrete that achieves high density and high strength through vibratory rolling construction technology. It is a kind of dry hard cement concrete with zero slump. Compared with ordinary concrete, RCC obtains strength by interlocking between coarse aggregates. It uses less water, has low consistency, and can save a lot of cement. , and the construction speed is fast and the maintenance time is short. It is mainly used for road pavement engineering and hydraulic dam engineering. [0003] The Chinese patent whose publication number is CN101168482A discloses a kind of roller compacted high-performance concrete and its preparation method, which is made of cementitious material, aggregate, water and external water reducing agent, wherein the c...

Claims

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Application Information

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IPC IPC(8): C04B28/00
CPCC04B28/00C04B2201/50C04B14/02C04B14/06C04B14/28C04B18/08C04B16/02C04B14/38C04B24/18C04B24/40C04B24/34
Inventor 舒鹏飞杜明胜
Owner 武汉中阳明建材有限公司
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