Hard shell pumice concrete, light building block and its preparation method

Abstract

This invention relates to a hard shell pumice concrete and light block, and their preparation. First immerse the pumice to water saturation; then dry the wet pumice, to reach surface dry; add sand, cement, water, additives in the mixer for agitation; add the pre-humid pumice in the mixer for continues agitation; the pumice after agitation and wrap carries out nature maintenance then gain hard shell pumice; at last use water to mix the cement, fine bone power and hard shell pumice to produce hard shell pumice concrete. The hard shell closes orifice of the pumice surface, increase the strength, and improve its surface roughness. It reduces cement consumption, in particular prevents cement mud being sucked into holes, reduces the density of concrete, reduce the thermal conductivity, and increase noise insulation properties. The hole of light block is designed as Oval. Because paving starch easily, so improve the lime linking quality, and reduce influence of the construction factors on the wall force-resistant and strength and incubation properties.

Description

(1) Technical field [0001] The invention relates to a building material and a preparation method thereof, in particular to a building material made of pumice and a preparation method thereof. (2) Background technology [0002] Pumice is a porous rock formed when magma is rapidly sprayed into the air during a volcanic eruption. Due to the sharp cooling and decompression, the water vapor and other gases in it expand rapidly when cooling. Because it can float on the water surface, it is named pumice stone. Pumice has a well-developed pore structure, and most of the pores are filled with amorphous glass, most of which are brown or iron black, and are reddish-brown after high-temperature baking or weathering near the crater. Its main mineral composition is: water mountain glass, feldspar, quartz, biotite and hornblende. [0003] Pumice according to SiO 2 The mass fraction can be divided into three types: acidic-rhyolitic pumice, neutral-andesitic pumice and alkaline-basaltic p...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of hard-shell pumice concrete, lightweight block and preparation method thereof, which mainly solves the technical problem that the surface of natural pumice particles has exposed open holes, which affects the quality of pumice concrete; it also solves the problem of heat preservation of existing hollow blocks The problem of poor thermal insulation performance

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