A high-strength and high-insulation block

Abstract

The invention discloses a high-strength and high-insulation block, which comprises the following materials: 20-40 parts by weight of cement, 5-60 parts by weight of yellow sand, and 0.1-8 parts by weight of a main activator; wherein , the main activator is hydrotalcite or hydrotalcite-like. In the formula composition of the block, the combination of cement, yellow sand and the main activator produces a synergistic effect: the trace multivalent metal ions in the cement produce a complex reaction with the main activator, and the multivalent metal ions in the quartz sand or the two SiO-Water interface complexes, activates the surface of cement and quartz sand, changes the conventional stacking state of cement, and forms a huge network complexation structure in the system; at the same time, when the main activator and the multivalent metal ion At the same time, the layers of the main activator are stretched, and nanopores of about 1-5nm are uniformly formed; so that the obtained block has good strength, thermal insulation performance, water retention, and construction.

Description

technical field [0001] The invention relates to building materials, in particular to a high-strength and high-insulation block, which is a multi-functional building block that can be used not only as a structural material for a weighing wall, but also as an insulation material. Background technique [0002] Ordinary blocks, including hollow blocks, mostly use coal slag, coal gangue, pumice ceramsite as coarse aggregate, fly ash, slag, etc. as fine aggregate, and ordinary Portland cement as adhesive. made. [0003] Among them, in the design of the thermal insulation block, on the one hand, the thermal insulation performance of the thermal insulation block is improved through the structural setting of the thermal insulation block, such as setting a number of hollow layers, extending the thermal bridge, etc.; The material and formula of the block are improved to improve its thermal insulation performance. In terms of the formulation of thermal insulation blocks, it is common ...

AI Technical Summary

Problems solved by technology

These two types of thermal insulation blocks have low dry density and small thermal conductivity, but their compressive strength is only about 1 / 4 of that of conventional thermal insulation blocks.

[0006] 2. The water retention rate of the block is low, and the water retention rate is uneven. The local part of the block is easy to accumulate water, which breaks out from the large pores, and the thermal insulation block is prone to local cracks due to environmental reasons such as water vapor, etc.