A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Additive for reducing springback rate of sprayed concrete as well as preparation method and application of additive
The invention belongs to the technical field of sprayed concrete, and particularly relates to an additive for reducing the rebound rate of sprayed concrete and a preparation method and application thereof, the additive is prepared from the following raw materials in percentage by mass: 10%-15% of a high-performance water reducing agent, 10%-15% of aluminum sulfate, 2%-7% of a stabilizer, 0.3%-0.6% of etherified starch and the balance of water; the admixture disclosed by the invention has the characteristics of semitransparent liquid, does not have the problems of layering, precipitation and the like, can adopt a metering and adding mode similar to a water reducing agent, is easier to mix uniformly during use, and ensures the stability of controlling the springback amount of wet sprayed concrete; the admixture can greatly reduce the springback rate of sprayed concrete, improve the working performance of the concrete, improve the strength and durability of the concrete, reduce the cracking risk of the concrete and make up the adverse effect of the accelerator on the sprayed concrete at a lower cost under the condition of reducing the using amount of the accelerator.
本发明属于喷射混凝土技术领域，尤其涉及一种降低喷射混凝土回弹率的外加剂及其制备方法和应用，所述外加剂由如下质量百分比的原料组成：高性能减水剂10％～15％、硫酸铝10％～15％、稳定剂2％～7％、醚化淀粉0.3％～0.6％，余量为水；本发明的外加剂具有半透明液体状特性，不存在分层析出等问题，可以采用类似减水剂的计量及添加方式，使用时更易混合均匀，保证了湿喷射混凝土回弹量控制的稳定性；本发明外加剂可在降低速凝剂用量的情况下，以较低的成本，大大降低喷射混凝土回弹率，改善混凝土工作性能，同时提高混凝土强度和耐久性，减少混凝土开裂风险，弥补速凝剂对喷射混凝土带来的不利影响。
Additive for reducing springback rate of sprayed concrete as well as preparation method and application of additive
The invention belongs to the technical field of sprayed concrete, and particularly relates to an additive for reducing the rebound rate of sprayed concrete and a preparation method and application thereof, the additive is prepared from the following raw materials in percentage by mass: 10%-15% of a high-performance water reducing agent, 10%-15% of aluminum sulfate, 2%-7% of a stabilizer, 0.3%-0.6% of etherified starch and the balance of water; the admixture disclosed by the invention has the characteristics of semitransparent liquid, does not have the problems of layering, precipitation and the like, can adopt a metering and adding mode similar to a water reducing agent, is easier to mix uniformly during use, and ensures the stability of controlling the springback amount of wet sprayed concrete; the admixture can greatly reduce the springback rate of sprayed concrete, improve the working performance of the concrete, improve the strength and durability of the concrete, reduce the cracking risk of the concrete and make up the adverse effect of the accelerator on the sprayed concrete at a lower cost under the condition of reducing the using amount of the accelerator.
本发明属于喷射混凝土技术领域，尤其涉及一种降低喷射混凝土回弹率的外加剂及其制备方法和应用，所述外加剂由如下质量百分比的原料组成：高性能减水剂10％～15％、硫酸铝10％～15％、稳定剂2％～7％、醚化淀粉0.3％～0.6％，余量为水；本发明的外加剂具有半透明液体状特性，不存在分层析出等问题，可以采用类似减水剂的计量及添加方式，使用时更易混合均匀，保证了湿喷射混凝土回弹量控制的稳定性；本发明外加剂可在降低速凝剂用量的情况下，以较低的成本，大大降低喷射混凝土回弹率，改善混凝土工作性能，同时提高混凝土强度和耐久性，减少混凝土开裂风险，弥补速凝剂对喷射混凝土带来的不利影响。
Additive for reducing springback rate of sprayed concrete as well as preparation method and application of additive
一种降低喷射混凝土回弹率的外加剂及其制备方法和应用
QIAN SHAOYU (author) / WANG NIANFENG (author) / CHEN XIUWEN (author) / WANG TIANTANG (author) / LI PENG (author) / WU YUZHU (author) / ZHAO SEN (author) / LIAO LIYU (author) / KONG ZHAOGUANG (author) / ZHAO JING (author)
2024-03-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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