Anti-seepage and anti-cracking concrete and preparation method thereof

Abstract

The invention discloses anti-seepage and anti-cracking concrete and a preparation method thereof. Raw materials of the concrete comprise the following components: 150-200 parts of cement; 260-340 parts of sand; 450-620 parts of aggregate; 60-80 parts of fly ash; 30-50 parts of metakaolin; 11-16 parts of reinforced fibers; 30-45 parts of a water-absorbing elastomer; 2-4 parts of a water reducing agent; and 60-90 parts of water. According to the scheme, the technical prejudice is broken through, the scheme of shielding moisture through pretreatment is adopted, the water-absorbing elastomer is ingeniously applied to a concrete formula, the impermeability of the concrete formula is improved, and meanwhile, the reinforcing fibers are added to improve the cracking resistance of the concrete, so that the concrete in the scheme is good in impermeability and cracking resistance, convenient to construct and high in strength.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to an anti-seepage and anti-cracking concrete and a preparation method thereof. Background technique [0002] As an indispensable material in urban construction, road and bridge construction, and water conservancy projects, concrete not only plays the role of structural support, but also requires concrete to have good impermeability and crack resistance in some special scenarios, such as: water conservancy projects , road and bridge projects with large temperature differences, etc., and because concrete is still exposed to cold and heat, moisture or liquid infiltration during use, these external disturbances directly affect the anti-seepage and anti-cracking performance of concrete. In some scenarios, if the concrete encounters load-bearing or other stress conditions, it may crack due to its own thermal expansion and contraction combined with external forces, resulting in a decline...

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Problems solved by technology

[0002] As an indispensable material in urban construction, road and bridge construction, and water conservancy projects, concrete not only plays the role of structural support, but also requires concrete to have good impermeability and crack resistance in some special scenarios, such as: water conservancy projects , road and bridge projects with large temperature differences, etc., and because concrete is still exposed to cold and heat, moisture or liquid infiltration during use, these external disturbances directly affect the anti-seepage and anti-cracking performance of concrete. In some scenarios, if the concrete encounters load-bearing or other stress conditions, it may crack due to its own thermal expansion and contraction combined with external forces, resulting in a decline in its performance. In addition, once the concrete cracks, even the surface It cannot be clearly observed, but the bonding density of its internal components is also broken, which directly affects the impermeability of concrete. Although some concrete currently on the market enhances its bonding strength by adding fibers and Add slag, fly ash, etc. to help increase the density to indirectly improve the bonding density of concrete. This composite modification method may have a certain immediate effect in the short term, but there may still be certain hidden dangers in long-term use. Therefore, , to find out how to improve the concrete anti-seepage, anti-cracking better scheme is still a subject of continuous research by technicians in this field, and it is also a project of great practical significance

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