Light sand-free backfill material for floor heating backfill, and preparation method thereof

Abstract

The invention relates to the field of building materials, and especially relates to a light sand-free backfill material for floor heating backfill, and a preparation method thereof. The material is composed of 2.5 to 3.5 parts of ordinary Portland cement, 1.5 to 2.5 parts of sulphoaluminate cement, 0.8 to 1.3 parts of gypsum, 0.01 to 0.02 part of a polycarboxylate superplasticizer, 0.01 to 0.03 part of cellulose ether, 0.008 to 0.013 part of a PP fiber, 0.008 to 0.013 part of an early strength agent, 0.03 to 0.05 part of manganese dioxide, 0.3 to 0.5 part of hydrogen peroxide and 3 to 4 partsof water. The method is simple, all the raw materials form the backfill material, and when the material is used for floor heating filling, the quality is stable, and the cost is low.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a light-weight sand-free backfill material for floor heating backfill and a preparation method thereof. Background technique [0002] With the large-scale promotion of floor heating, the market capacity of floor heating backfill materials is also increasing. At present, the most widely used backfill materials are ordinary pea-stone concrete and thick-layer self-leveling mortar, and bean-rock concrete backfill is difficult to control. , and the construction efficiency is low, it is the initial backfilling method, which is gradually being replaced by thick-layer self-leveling mortar. control, which can reduce the risk of cracking and hollowing, and its flatness is unmatched by manual troweling. However, the material consumption of the first two mortars in backfilling construction is huge, especially the consumption of sand and gravel; with the increasing pressure of environmental ...

AI Technical Summary

Problems solved by technology

[0002] With the large-scale promotion of floor heating, the market capacity of floor heating backfill materials is also increasing. At present, the most widely used backfill materials are ordinary pea-stone concrete and thick-layer self-leveling mortar, and bean-rock concrete backfill is difficult to control. , and the construction efficiency is low, it is the initial backfilling method, which is gradually being replaced by thick-layer self-leveling mortar. control, which can reduce the risk of cracking and hollowing, and its flatness is unmatched by manual troweling. However, the material consumption of the first two mortars in backfilling construction is huge, especially the consumption of sand and gravel; with the increasing pressure of environmental protection Whether it is the mining of sand and gravel or the production of other raw materials, its production capacity is constantly shrinking. How to save raw materials and meet the performance requirements of mortar has become a problem that the industry has to consider