Early-strength cement soil as well as preparation method and application thereof

Abstract

The invention discloses an early-strength cement soil as well as a preparation method and application thereof. The early-strength cement soil is composed of the following components in parts by weight: 23-25 parts of water, 65-75 parts of soil, 0.5-1 part of a quick-setting anti-permeability agent and 5.5-7 parts of cement, wherein the quick-setting anti-permeability agent is a mixed powder material of fly ash and water glass, and the mass ratio of the fly ash to the water glass is (90-95): (5-10). The early strength cement soil has the advantages of high early strength, short curing time, short construction period, extremely strong fluidity and self-sealing property, controllable construction quality and good impermeability.

Description

technical field [0001] The invention relates to the field of civil engineering materials, in particular to an early-strength cement soil and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the rapid development of urbanization in our country, due to the limitation of urban land use, a large number of high-rise and underground space buildings are built, and the supporting foundation pits are dug deeper and deeper. At the same time, due to the complexity and sensitivity of building functions, coupled with the narrow construction space and complex construction environment, many problems have been brought to the foundation pit cons...

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Problems solved by technology

[0004] At present, the commonly used method of backfilling fertilizer tanks in engineering is to backfill with 2:8 lime soil and compact them in layers. The disadvantage of this method is that compaction equipment is required for layered compaction. For fertilizer tanks with narrow widths, large compaction machines cannot be used , only manual compaction can be used, resulting in low construction efficiency and delaying the construction progress; secondly, the bearing capacity of the compacted lime soil is not high, and this method is not suitable for special buildings that require a certain bearing capacity; in addition, Lime soil is not waterproof, resulting in a large amount of stagnant water in the fertilizer tank of the foundation pit, causing great additional pressure on the basement wall, and the underground structure of the building needs special waterproof treatment, which greatly increases the overall construction cost

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