High folding resistance road concrete material and preparing method thereof

Abstract

The invention discloses a road concrete material with high folding strength and a production method thereof. The road concrete material with high folding strength mainly contains binding agent, sand stone aggregate, mixing water, concrete admixture and excitant. The binding agent is composed of common silicate cement, ore slag powder and steel slag powder. The mass percentages of the components are as follows: 60-70% of common silicate cement, 20-30 % of ore slag powder and 0-10% of steel slag powder. The additional amount of the excitant is 5.0-10.0% of the total mass of the ore slag powder and the steel slag powder. The excitant is selected from gypsum, sodium sulfate, sodium fluoride, triethanolamine or a mixture thereof. By adding the excitant, the latent activity of the ore slag and the steel slag is excited, so that the compactness of concrete is improved and the folding strength of the road concrete is greatly improved.

Description

[technical field]

[0001] The invention relates to inorganic non-metallic materials, in particular to a road concrete material and a preparation method thereof. [Background technique]

[0002] The highway construction industry is the basic industry of the economy and plays a vital role in the development of the national economy. At present, my country's highways are far ahead of the sum of other modes of transportation in terms of passenger traffic, freight volume, and passenger turnover. However, with the rapid development of roads, especially expressway construction, the problem of premature destruction of large areas of roads is also very prominent. Many newly-built or recently overhauled national and provincial roads have experienced serious early damage, which is far behind the design service life. Reasons for premature failure of concrete pavement include design, construction and use reasons. But the most important factor is that the huge load and traffic volume will...

Examples

preparation example Construction

[0030] The preparation method of high flexure-resistant road concrete material of the present invention comprises the steps:

[0031] 1) Carry out the compatibility test of the pre-prepared concrete admixture with the slurry fluidity method, and confirm that the slurry has good initial fluidity and small fluidity loss over time, and has no hardening and no bleeding;

[0032] 2) Add the weighed stone, sand, cementitious material, and fiber into the forced mixer in turn, and dry stir for 1 to 2 minutes to fully disperse the material (fiber);

[0033] 3) Add one-half of the total mixing water and admixture (mix water and admixture first) into the mixer, and stir for 1 minute to make the cementitious material wrap the sandstone aggregate and fiber;

[0034] 4) Add the remaining water and admixture, mix the materials evenly, pour them out of the mixer, and vibrate properly for casting.

[technical field]

[0001] The invention relates to inorganic non-metallic materials, in particular to a road concrete material and a preparation method thereof. [Background technique]

[0002] The highway construction industry is the basic industry of the economy and plays a vital role in the development of the national economy. At present, my country's highways are far ahead of the sum of other modes of transportation in terms of passenger traffic, freight volume, and passenger turnover. However, with the rapid development of roads, especially expressway construction, the problem of premature destruction of large areas of roads is also very prominent. Many newly-built or recently overhauled national and provincial roads have experienced serious early damage, which is far behind the design service life. Reasons for premature failure of concrete pavement include design, construction and use reasons. But the most important factor is that the huge load and traffic volume will...

Examples

preparation example Construction

[0030] The preparation method of high flexure-resistant road concrete material of the present invention comprises the steps:

[0031] 1) Carry out the compatibility test of the pre-prepared concrete admixture with the slurry fluidity method, and confirm that the slurry has good initial fluidity and small fluidity loss over time, and has no hardening and no bleeding;

[0032] 2) Add the weighed stone, sand, cementitious material, and fiber into the forced mixer in turn, and dry stir for 1 to 2 minutes to fully disperse the material (fiber);

[0033] 3) Add one-half of the total mixing water and admixture (mix water and admixture first) into the mixer, and stir for 1 minute to make the cementitious material wrap the sandstone aggregate and fiber;

[0034] 4) Add the remaining water and admixture, mix the materials evenly, pour them out of the mixer, and vibrate properly for casting.

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