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Grouting material for sound barrier backboard

A technology of sound barrier and grouting material, applied in noise absorption devices, buildings, etc., can solve the problems of slow hardening speed, low flexural strength, large quality fluctuation, etc., achieve excellent bonding or reinforcement, and high utilization rate of solid waste , the effect of reducing production costs

Inactive Publication Date: 2018-01-19
SICHUAN SHUANGTIE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (1) Low adhesion; (2) Slow hardening speed; Difficult to reconcile the contradiction between operable time and early strength, as well as early strength growth rate and late strength steady growth; large quality fluctuations; (3) Low flexural strength , high brittleness, when the train travels at high speed and generates wind pressure and vibration, it is easy to be brittle and cracked

Method used

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  • Grouting material for sound barrier backboard

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Effect test

Embodiment 1

[0034] This embodiment provides a grouting material whose raw materials include 15 parts of salt cement, 30 parts of fly ash, 50 parts of construction waste, 10 parts of water, 0.05 part of lignosulfonate, and 0.1 part of calcium sulfoaluminate expansion agent , 0.2 parts of sodium gluconate, 0.2 parts of polyacrylamide and 0.06 parts of calcium chloride;

[0035] Prepare the grouting material according to the conventional preparation method.

Embodiment 2

[0037] This embodiment provides a grouting material whose raw materials include 25 parts of salt cement, 40 parts of fly ash, 70 parts of construction waste, 15 parts of water, 0.08 parts of polycarboxylate superplasticizer, and calcium sulfoaluminate expansion agent. 0.3 parts, 0.3 parts of citric acid, 0.3 parts of polyacrylamide and 0.1 parts of sodium chloride;

[0038] Prepare the grouting material according to the conventional preparation method.

Embodiment 3

[0040] This embodiment provides a grouting material whose raw materials include 18 parts of salt cement, 32 parts of fly ash, 55 parts of construction waste, 12 parts of water, 0.06 part of casein superplasticizer, 0.15 part of calcium oxide expansion agent, tartaric acid 0.3 parts, 0.22 parts of hydroxymethylpropyl cellulose and 0.07 parts of sodium sulfate;

[0041] Prepare the grouting material according to the conventional preparation method.

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Abstract

The invention relates to the technical field of building materials and provides a grouting material for a sound barrier backboard. The grouting material comprises the following raw materials (by weight): 15-25 parts of Portland cement, 30-40 parts of fly ash, 50-70 parts of building rubbish, 10-15 parts of water and 0.61-1.08 parts of additives. The grouting material has advantages of wide sourcesof raw materials, high utilization rate of solid wastes, low cost, rapid hardening, early strength, slight expansion, strong bonding force, good heat stability and the like, and can be used as a binder for bonding or reinforcement of engineering equipment. The sound barrier backboard is provided with multiple reinforcing holes. after the backboard is maintained to design strength, the backboard is tensioned with pre-stress steel bars or steel strands, and then the grouting material is injected to glue the pre-stress steel bars or steel strands with the sound barrier backboard as a whole. Thus, the sound barrier backboard is safe and stable and durable.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a grouting material for a sound barrier backboard. Background technique [0002] The sound barrier backboard is a light-weight, high-strength, thin-walled component made of inorganic composite materials. The tensile strength of prestressed steel bars or steel strands for reinforcement is relatively high. Oxygen resin grout, water-based epoxy resin grout, cement grout, cement mortar grout and other materials are difficult to meet the high-performance requirements of the grout for the sound barrier backplane, specifically as follows: [0003] 1. Epoxy resin pouring glue, epoxy resin grouting material [0004] (1) Short operating time: when the ambient temperature is 20°C, the operating time is 15-25min; when the ambient temperature is 40°C, the operating time is only 5-10min; (2) Serious leakage: the glue will flow along the fibers, It seeps out along the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E01F8/00C04B111/70C04B111/52
Inventor 熊伟余中华张洪
Owner SICHUAN SHUANGTIE TECH CO LTD
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