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Shotcrete Thickening and Rebound Adjustment Agent

喷射混凝土增稠剂及回弹调节剂

A shotcrete performance additive composed of viscosity-modifying, polymer-reinforced and nano-modified components, designed to improve workability, cohesion, water retention and rebound control in tunnel and support works.

喷射混凝土增稠剂及回弹调节剂由增黏、聚合物增强及纳米改性等复合组分构成,用于改善喷射混凝土和易性、黏聚性、保水性及回弹控制效果。

Supplied by Wuhan Ujoin Building Materials Technology Co., Ltd.

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Overview

Product overview

The shotcrete thickening and rebound adjustment agent is formulated for sprayed concrete applications. It is composed of viscosity-modifying components, polymer-reinforced components, nano-modified components and other composite materials. According to physical form, the product can be supplied as liquid or powder type.

The product improves the workability, water retention and cohesion of shotcrete, while supporting setting and early-strength development. It is intended to improve on-site shotcrete construction performance, reduce rebound and support efficient tunnel initial support and structural reinforcement works.

喷射混凝土增稠剂及回弹调节剂面向喷射混凝土应用场景,由增黏组分、聚合物增强组分、纳米改性组分及其他复合材料组成。根据物理形态,该产品可分为液体型和粉体型。

该产品可改善喷射混凝土的和易性、保水性和黏聚性,同时支持凝结及早期强度发展,有助于改善现场喷射混凝土施工状态、降低回弹率,并服务于隧道初期支护及结构修复加固工程。

Applications

Typical applications

  • Highway tunnel initial support
  • Railway tunnel initial support
  • Hydraulic culverts
  • Foundation pit slopes
  • Shotcrete repair and reinforcement works
  • Tunnel engineering shotcrete performance improvement
  • 公路隧道初期支护
  • 铁路隧道初期支护
  • 水工涵洞
  • 基坑边坡
  • 喷射混凝土修复加固工程
  • 隧道工程喷射混凝土性能提升

Features

Key product features

  • Improves shotcrete viscosity and cohesion
  • Enhances water retention and workability
  • Supports setting and early-strength development
  • Helps reduce shotcrete rebound rate
  • Available in liquid and powder forms
  • Suitable for tunnel and support engineering applications
  • 提高喷射混凝土黏度和黏聚性
  • 改善保水性与和易性
  • 促进凝结及早期强度发展
  • 有助于降低喷射混凝土回弹率
  • 可提供液体型和粉体型
  • 适用于隧道及支护工程应用

Technical Information

Technical parameters

  • The product is designed to reduce the shotcrete rebound rate to no more than 8% under appropriate project conditions.
  • Representative engineering application: In the Ganzhou-Shenzhen High-Speed Railway project, the product system was used for C25 shotcrete with a shotcrete thickness of 300–400 mm. The accelerator achieved an initial setting time of less than 2 minutes and a final setting time of less than 5 minutes. The rebound adjustment agent supported a rebound rate of no more than 8%, and the 1-day compressive strength reached at least 10 MPa.

技术参数

  • 该产品在适宜工程条件下可将喷射混凝土回弹率控制在8%以内。
  • 代表性工程应用:在赣深高速铁路项目中,该产品体系应用于C25喷射混凝土,喷射厚度为300–400 mm。配套速凝材料初凝时间小于2分钟,终凝时间小于5分钟;回弹调节剂支持回弹率控制在8%以内,1天抗压强度达到10 MPa以上。