Silt-cement light building block, method for preparing same and application of silt-cement light building block

Abstract

The invention discloses a silt-cement light building block, a method for preparing the same and application of the silt-cement light building block. The silt-cement light building block comprises, by weight, 13-56 parts of cement, 17-19 parts of coal ash, 15-69 parts of silt, 0.7-3.6 parts of foaming agents, 1.2 parts of foam stabilizers and activators. The weight of the activators accounts for 6% of that of the foaming agents. The method includes metering the cement, the coal ash, the foam stabilizers, the activators, water and the saturated silt and then feeding the cement, the coal ash, the foam stabilizers, the activators, the water and the saturated silt into a stirring machine; uniformly stirring the cement, the coal ash, the foam stabilizers, the activators, the water and the saturated silt to obtain first mixtures, then metering the foaming agents and adding the foaming agents into the stirring machine; stirring the foaming agents and the first mixtures briefly to obtain second mixtures, pouring the second mixtures in molds and maintaining the second mixtures. The silt-cement light building block, the method and the application have the advantages that energy consumption can be reduced during production, and the building block can be lightened, has certain strength and is low in production cost.

Description

technical field [0001] The invention belongs to the technical field of road traffic engineering materials, and relates to a silt-cement lightweight building block and its preparation method and application. Background technique [0002] Since the reform and opening up, my country's highway construction has achieved rapid development. By the end of 2003, the total mileage of national highways had reached 1,809,800 kilometers, including nearly 30,000 kilometers of expressways and 240,000 kilometers of roads above Class II. Judging from the high-grade highways in operation, especially expressways, vehicle jumping at the bridge head is one of the main diseases. The so-called "jumping at the bridge head" refers to the settlement of structures such as bridges and culverts and the back of the abutment due to the driving load and self-weight. Usually, the settlement of the structure is inconsistent with the settlement of the back of the abutment, resulting in uneven settlement, resu...

AI Technical Summary

Problems solved by technology

In the existing research, the silt is stabilized by compounding (such as cement, lime, slaked lime, fly ash, etc.), but the above methods inevitably suffer from large drying shrinkage and easy cracking of the solidified silt. As a result, when the external environmental conditions change, the silt solidified body is prone to cracking or settlement due to volume expansion and contraction changes.

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