High-strength anti-cracking low-thermal-conductivity ceramsite concrete and preparation method thereof

Abstract

The invention discloses high-strength anti-cracking low-thermal-conductivity ceramsite concrete and a preparation method thereof. The ceramsite concrete comprises the following raw materials in partsby weight: 328 to 400 parts of Portland cement; 617 to 728 parts of ceramsite, 20 to 50 parts of silica fume, 60 to 100 parts of mineral powder, 30 to 70 parts of fly ash, 507 to 725 parts of naturalriver sand, 100 to 150 parts of water, 10 to 25 parts of rutile type nano TiO2, 50 to 150 parts of redispersible latex powder, 4 to 6 parts of polypropylene fiber and 2 to 2.5 parts of a water reducing agent. The effects of high strength, low thermal conductivity and good crack deformation resistance are achieved; the preparation method of the ceramsite concrete comprises the following steps: S1,mixing the Portland cement, the fly ash, the mineral powder, the silica fume, the redispersible latex powder and the polypropylene fibers; S2, mixing water, rutile type nano TiO2 and the water reducing agent; S3, mixing S2 and S1; and S4, adding the ceramsite and the natural river sand into the S3 to obtain the high-strength anti-cracking low-thermal-conductivity ceramsite concrete.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a high-strength crack-resistant low-thermal conductivity ceramsite concrete and a preparation method thereof. Background technique [0002] At present, the construction industry is gradually shifting from traditional buildings to new buildings, and new-age buildings pay more attention to energy saving, environmental protection, energy consumption reduction, and high-strength and light-weight structures. Traditional ordinary concrete materials have self-heaviness, low flexural strength, and large shrinkage deformation. And other shortcomings, can no longer meet the requirements of materials required for modern engineering construction, it is extremely urgent to find new building materials with excellent performance. In this context, due to the advantages of light weight, large structural span, cost saving, and good thermal insulation performance, lightweight aggregate concrete ha...

AI Technical Summary

Problems solved by technology

However, the ceramsite in this product needs to be soaked for 1 hour and drained for 12 hours to reach a saturated surface-dry state. Although it can improve the workability of the concrete mixture, it may have a certain impact on the strength of the ceramsite concrete. In addition, this treatment The process will also bring many difficulties to the actual construction. On the one hand, it will make the construction process cumbersome, and on the other hand, it will also reduce the construction efficiency.