A kind of pump concrete and preparation method thereof

Abstract

The application relates to the field of concrete, and specifically discloses a pumping concrete and a preparation method thereof; the pumping concrete is made of raw materials containing the following parts by weight: 280-400 parts of cement, 50-70 parts of fly ash, mineral powder 80‑100 parts, 585‑680 parts of river sand, 1050‑1110 parts of coated gravel, 140‑155 parts of water, 7‑10.5 parts of admixture, 8‑12 parts of modified composite fiber; the modified composite fiber is composed of bamboo fiber and It is made by mixing polyurethane fibers; its preparation method is: take coated crushed stone, modified composite fiber, and water and mix and stir to make a mixture; weigh cement, fly ash, mineral powder, river sand, The admixture is added to the mixture prepared by S1, and the concrete mixture is prepared after stirring and mixing, pumped and poured into the mold, and the pumped concrete is made after curing; it has the function of making the pumped concrete not easy to block the pipeline during pumping , and has the advantage of higher strength after curing.

Description

technical field [0001] The present application relates to the field of concrete, and more specifically, it relates to a pumping concrete and a preparation method thereof. Background technique [0002] Pumping concrete is to use the pressure of the concrete pump to transport the concrete mixture to the pouring construction site through the pipeline. The pumping concrete has the advantages of good quality, high efficiency and fast speed, and can realize long-distance transportation; it is widely used in roads, Construction of railways, water conservancy, high-rise and super high-rise buildings and buildings. [0003] The long-distance transportation of pumped concrete requires the use of conveying pipes. Generally, in order to avoid coarse aggregates from clogging the conveying pipes, pebbles are often used as coarse aggregates, because pebbles have good pumpability, but in road construction, concrete needs to be pumped. It has high flexural strength, but the binding force be...

AI Technical Summary

Problems solved by technology

[0003] The long-distance transportation of pumped concrete requires the use of conveying pipes. Generally, in order to avoid coarse aggregates from clogging the conveying pipes, pebbles are often used as coarse aggregates, because pebbles have good pumpability, but in road construction, concrete needs to be pumped. It has high flexural strength, but the binding force between pebbles and cement is low, adding pebbles as coarse aggregate will make the strength of pumped concrete low, which is not suitable for road construction

[0004] If crushed stone is used as the coarse aggregate of pumped concrete, the binding force between crushed stone and cement is high, which can significantly improve the strength of pumped concrete, but the fluidity and workability of crushed stone are poor, and it is easy to medium clogged pipe

Images