Hydraulic large-volume crack-resistant concrete and preparation method thereof
A large-volume, concrete technology, applied in the field of concrete materials, can solve the problems of insufficient crack resistance of shrinkage-compensated concrete, and achieve the effects of reducing cracks, improving crack resistance, and increasing splitting strength
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[0031] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.
[0032] This embodiment provides a large-volume anti-cracking concrete for hydraulic engineering. The components of the large-volume anti-cracking concrete for hydraulic engineering include: cement, fly ash, expansion agent, water, sand, gravel, and water reducing agent; Among them, the mass ratio of each component is: cement 5-10%, fly ash 2-4%, expansion agent 1-2%, water 5-10%, sand 28-32%, crushed stone 50-55%, The water reducing agent is 0.05-0.1%, and the total mass percentage of each component meets 100%.
[0033] Wherein, the cement is 42.5 grade ordinary Portland cement; the fly ash is F class I grade fly ash; the expansion agent includes UEA expansion agent and MgO expansion agent; the sand is inactive natural river sand The fine...
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