No-shrinkage grouting filler with adjustable performance

Abstract

The present invention belongs to the field of building material, and is especially one kind of no-shrinkage grouting filler with adjustable performance. The no-shrinkage grouting filler is hydraulic mixture comprising Portland cement and fly ash or silica fume as cementing material, quartzite, water reducing agent, expanding agent, water loss reducing agent, early settling preventing agent and early contract preventing agent. It has high flowability, no settling, no weeping, micro plastic expansion, no shrinkage, no cracking, adjustable performance, and no plastic settling and other excellent performance, and may be applied widely in installing large precise equipment, large area leveling, emergency repair engineering, etc.

Description

1. Technical field [0001] The invention relates to a grouting material for foundation engineering, especially a non-shrinkage grouting material with adjustable performance, which is mainly used for large-scale high-precision equipment installation, large-area automatic leveling and emergency repair projects, underground projects, tunnel projects, and anchoring projects , water interception and plugging, reinforcement engineering, etc., which belong to the field of building materials. 2. Background technology [0002] In recent years, with the increasing expansion and prosperity of the construction market, construction material manufacturers and research institutes are constantly updating equipment and researching new construction materials, thus a large number of new construction materials have emerged in the construction market. [0003] In order to ensure the installation and commissioning of the equipment, the secondary grouting layer is usually filled with fine concrete ...

AI Technical Summary

Problems solved by technology

Because there are obstacles such as anchor bolts in the space of the secondary grouting layer, it is difficult to really fill it

Ordinary cement mortar or concrete has drying shrinkage, so that after the grouting layer is hardened, a tight bond cannot be formed between the equipment base and the concrete foundation, resulting in looseness of the equipment base, which affects long-term use. When the grouting layer thickness is small, construction very difficult

For this reason, some developed countries have developed special secondary perfusion materials and entered the domestic market with the equipment, but the price is expensive

my country has also successfully developed perfusion materials to replace imported products, but the price is still relatively high, and there are also some shortcomings

For example, cracks are generated due to the shrinkage of the grouting material during use; the grouting material cannot fill the entire space due to insufficient fluidity, and grouting voids appear, etc.