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Bridge support mortar foundation material taking cement and gypsum as bottom materials and preparation method thereof

A technology for bridge bearing mortar and basic materials, applied in the field of building materials, can solve the problems of complex materials and high cost, and achieve the effect of simple materials and low cost

Inactive Publication Date: 2018-03-13
芜湖铁路桥梁制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of complex materials and high cost in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A bridge support mortar base material with cement as the base material. The total weight of the bridge support base material is 1000kg, and the weight ratio of each component is cement: gypsum: expansion agent: water reducing agent: water retaining agent: early strength type Admixture: retarder: defoamer = 20:5:2:0.1:0.1:0.01:0.2:0.01.

[0025] Among them, the cement is Portland cement; the expansion agent is a concrete expansion agent; the water reducer is a conventional lignosulfonate water reducer; the water retention agent is polyacrylamide; the early strength admixture is nitrite; The agent is a conventional retarder; the defoamer is polydimethylsiloxane.

Embodiment 2

[0027] A bridge support mortar base material with cement as the base material. The total weight of the bridge support base material is 1500kg, and the weight ratio of each component is cement: gypsum: expansion agent: water reducing agent: water retaining agent: early strength type Admixture: retarder: defoamer = 40:8:10:0.8:0.8:0.08:1:0.05.

[0028] The cement is aluminate cement; the expansion agent is concrete expansion agent; the water reducer is naphthalene-based high-efficiency water reducer; the water retention agent is sodium polyacrylate; the early strength admixture is chromate; the defoamer is polyoxyethylene glyceryl ether.

Embodiment 3

[0030] A bridge support mortar base material with cement as the base material. The total weight of the bridge support base material is 2000kg, and the weight ratio of each component is cement: gypsum: expansion agent: water reducing agent: water retaining agent: early strength type Admixture: retarder: defoamer = 30: 10: 8: 0.5: 0.5: 0.05: 0.8: 0.03.

[0031] The cement is phosphate cement; the expansion agent is concrete expansion agent; the water reducer is polycarboxylate high-efficiency water reducer; the water retention agent is starch grafted acrylate; the early strength admixture is calcium formate; Oxyethylene polyoxypropylene pentaerythritol ether.

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PUM

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Abstract

The invention discloses a bridge support mortar foundation material taking cement and gypsum as bottom materials and a preparation method thereof. The bridge support foundation material is prepared from the following components in parts by weight: 20 to 40 parts of the cement, 5 to 10 parts of the gypsum, 2 to 10 parts of an expanding agent, 0.1 to 0.8 part of a water reducing agent, 0.1 to 0.8 part of a water retaining agent, 0.01 to 0.08 part of an early strength type additive, 0.2 to 1 part of a retarder and 0.01 to 0.05 part of a de-foaming agent. In the second aspect, the preparation method of the bridge support mortar foundation material, provided by the invention, comprises the step of uniformly mixing all the components according to the formula. The bridge support mortar foundationmaterial disclosed by the invention has the beneficial effects of simple materials and low cost.

Description

technical field [0001] The invention belongs to the field of building materials, and more specifically relates to a bridge support mortar base material with cement and gypsum as base materials and a preparation method thereof. Background technique [0002] Bridge bearings are important structural components connecting the bridge superstructure and substructure. It can reliably transmit the reaction force and deformation (displacement and rotation angle) of the bridge superstructure to the bridge substructure, so that the actual stress of the structure is consistent with the calculated theoretical diagram. [0003] Chinese patent CN 104370511 B discloses bridge support mortar and its production method. The bridge support mortar includes the following raw materials in parts by weight: 45-60 parts of graded quartz sand, 30-40 parts of 42.5 sulfoaluminate cement , 5-15 parts of 42.5 ordinary silicon cement, 1-10 parts of U-type expansion agent, 0.1-1 part of water-reducing agen...

Claims

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Application Information

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IPC IPC(8): C04B28/34C04B28/04C04B28/06
CPCC04B28/04C04B28/06C04B28/34C04B22/143C04B2103/302C04B2103/465C04B2103/22C04B2103/50C04B2103/12
Inventor 陈辰杨明黄海峰
Owner 芜湖铁路桥梁制造有限公司
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