Anti-radiation concrete and its preparation method
A concrete and radiation protection technology, applied in the field of radiation protection building materials, can solve the problems of difficulty, aggregate sinking, poor workability, etc., and achieves the effect of satisfying bulk density, easy pouring and vibrating, and good construction performance
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[0076] Weigh 385Kg of cement, 1355Kg of barite sand, 1600Kg of barite crushed stone, 60Kg of 30*0.5mm shear wave steel fiber, 6.8Kg of water reducing agent, 155Kg of water, and weigh barite sand and barite crushed stone After fully mixing, add steel fiber, polycarboxylate superplasticizer and water, and stir for 100s to obtain concrete slurry, and observe that the slump of the concrete slurry is 180mm; transport the concrete slurry to the site by tanker, and reduce the loading by half; transport After arriving at the site, use the crane to place the concrete directly for construction, and the time from mixing to pouring is within 30 minutes. After the construction is completed and the final setting is completed, the film covering maintenance is adopted in time. After the curing time is 7 days, the effect is good, the concrete has no cracks, and the on-site bulk density spot check is 3580kg / m 3 , 28d intensity reaches 44.8Mpa.
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