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Road and bridge special concrete and preparation method thereof

A technology for concrete, roads and bridges, applied in clay preparation devices, chemical instruments and methods, cement mixing devices, etc., can solve problems such as water permeability reduction, affecting the quality and service life of roads and bridges, strength uniformity, pavement compressive strength not meeting requirements, etc. , to reduce permeability, enhance agglomeration performance, and prevent cracking

Inactive Publication Date: 2018-06-19
广东粤文建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The construction of road and bridge projects has an important impact on my country's transportation industry, and is related to the development of economic construction, so the construction technology and project quality of road and bridge projects are particularly critical. In road and bridge projects, concrete is used as the main construction material, and the performance of concrete affects Considering the quality and service life of road bridges, slag and fly ash are added to the existing road bridge concrete to increase the strength of road bridge decks and reduce water permeability, thereby enhancing the service life of road bridges. However, for road bridges that often transport heavy machinery , the strength uniformity of the pavement and the compressive strength of the pavement can no longer meet the needs

Method used

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  • Road and bridge special concrete and preparation method thereof
  • Road and bridge special concrete and preparation method thereof
  • Road and bridge special concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of preparation method of special concrete for road and bridge, concrete steps are as follows:

[0036] (1) 42kg of crushed stone and 8kg of discarded broken glass slag are pulverized into particles with a particle size less than 1.5-2cm, and then 33kg of fine river sand is added and mixed evenly to obtain a mixed aggregate;

[0037] (2) Grind 11kg of waste slag, 5kg of white vermiculite, 3kg of volcanic rock and 12kg of fly ash until the particle size is less than 0.2cm for later use, add 19kg of cement and 17kg of water into the high-efficiency mixing container, stir and mix evenly, and then add 0.2kg Weather-resistant filler, 0.2kg potassium titanate spar, 1,3kg water reducer, 2.6kg silicon powder and 0.1kg solidified corrosion inhibitor, mixed at high speed for 3-5min, then added crushed waste slag, white vermiculite, volcanic stone and The fly ash is stirred and mixed evenly to obtain a bonding enhancing component;

[0038] (3) Add the bonding enhancement co...

Embodiment 2

[0046] A kind of preparation method of special concrete for road and bridge, concrete steps are as follows:

[0047] (1) 47kg of crushed stones and 12kg of discarded glass cullets are pulverized into particles with a particle size less than 1.5-2cm, and then 38kg of fine river sand is added and mixed evenly to obtain a mixed aggregate;

[0048] (2) Grind 15kg of waste slag, 7kg of white vermiculite, 7kg of volcanic rock and 15kg of fly ash until the particle size is less than 0.2cm for later use, add 23kg of cement and 21kg of water into the high-efficiency mixing container, stir and mix evenly, and then add 0.4kg Weather-resistant filler, 0.3kg potassium titanate spar, 1.7kg water reducer, 3.2kg silicon powder and 0.3kg solidified corrosion inhibitor, stir and mix at high speed for 3-5min, then add crushed waste slag, white vermiculite, volcanic stone and powder Stir and mix the coal ash evenly to obtain a bonding enhancing component;

[0049] (3) Add the bonding enhancement...

Embodiment 3

[0071] A special concrete preparation device for roads and bridges, including high-efficiency mixing containers, such as figure 1 , figure 2 with image 3 As shown, the high-efficiency mixing container includes a mixing tank 1, the top center of the mixing tank 1 is provided with an installation through hole, the bottom is provided with a discharge port, and a discharge valve is installed at the discharge port, and the side wall of the mixing tank 1 is installed with an inlet Material channel 101;

[0072] The first rotating shaft 2 is installed and fixed in the installation through hole, and the first gear 3 is installed and fixed on one end of the first rotating shaft 2, and the other end is connected with the power output end of the reduction motor, and the bottom end surface of the first gear 3 is fixed with the first gear 3. Two rotating shafts 4, the middle part of the second rotating shaft 4 is sleeved with a horizontally distributed positioning plate 5, the bottom e...

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Abstract

The invention discloses road and bridge special concrete comprising the following components by weight: 42-47 parts of gravels, 33-38 parts of fine river sand, 11-15 parts of waste ore slag, 8-12 parts of waste broken glass slag, 3 to 7 parts of vesuvianite, 12 to 15 parts of fly ash, 19 to 23 parts of cement, 0.2 to 0.4 part of a weathering filler, 0.2 to 0.3 part of potassium titanate crystal, 5-7 parts of vermiculite, 1.3 to 1.7 parts of a water reducing agent, 2.6 to 3.2 parts of silicon powder, 0.1 to 0.3 part of a curing corrosion inhibitor and 17 to 21 parts of water. The waste ore slagand the fly ash in the concrete have pozzolanic reactivity, and can reduce the permeability of the concrete and increase the strength of the concrete, and the vesuvianite, the vermiculite and the waste broken glass slag all contain inorganic silicon compounds, can effectively improve the strength of the concrete and enhance the impact resistance of roads and bridges, by the addition of the weathering filler, the weather resistance of the concrete can be improved, the roads and bridges can adapt to temperature changes of different seasons, and by the addition of the curing corrosion inhibitor,the bonding performance of the concrete can be improved, surface cracking of the roads and the bridges can be prevented, and the service life of the roads and the bridges can be prolonged.

Description

technical field [0001] The invention belongs to the field of concrete preparation, and relates to special concrete for roads and bridges and a preparation method thereof. Background technique [0002] The construction of road and bridge projects has an important impact on my country's transportation industry, and is related to the development of economic construction, so the construction technology and project quality of road and bridge projects are particularly critical. In road and bridge projects, concrete is used as the main construction material, and the performance of concrete affects Considering the quality and service life of road bridges, slag and fly ash are added to the existing road bridge concrete to increase the strength of road bridge decks and reduce water permeability, thereby enhancing the service life of road bridges. However, for road bridges that often transport heavy machinery , the strength uniformity of the pavement and the compressive strength of the p...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B20/02B28C5/00B28C5/08B28C5/16C04B111/34
CPCB28C5/003B28C5/0831B28C5/16C04B20/023C04B28/00C04B2111/343C04B14/02C04B14/06C04B18/141C04B14/22C04B14/14C04B18/08C04B14/047C04B24/36C04B24/34C04B22/08C04B14/20C04B2103/302C04B18/146C04B2103/61
Inventor 张秋月何德明陈旭
Owner 广东粤文建筑科技有限公司
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