Preparation method of super high-early-strength mortar

Abstract

The invention discloses a preparation method of super high-early-strength mortar, which solves the problems that the high-early-strength mortar is slow in growth and short in operation time and is characterized in that cement, sand, mineral powder, solid early-strength component, liquid early-strength component and tap water are mixed and fully stirred by weight ratio into preferred cementing material, the best ratio of the mineral powder and sulphoaluminate cement is searched, construction aggregate is preferred, and the best ratio of the construction aggregate and the cementing material is researched, the early-strength and setting time are adjusted by the early-strength component and water-reducing and low-setting component, the weight ratio of the super high-early-strength mortal is finally determined as follows: 100 parts of the cement, 270-290 parts of the sand, 45-55 parts of the mineral powder, 5-7 parts of the early-strength component, 6-9 parts of the water-reducing and low-setting component, and 45-50 parts of the tap water, and the super high-early-strength mortar prepared by the preparation method is fast in strength growth, is good in concretion fluidity, is long in operation time, is wide in application and can be applied to occasions of the site repair with time limit.

Description

technical field [0001] The invention specifically relates to a method for preparing super-early-strength mortar, which belongs to the technical field of building material production, and in particular relates to a super-early-strength mortar material with adjustable setting time and strength. It is suitable for reinforcement grouting or emergency repair projects of airports, railways, highways, bridges, etc., as well as rapid anchoring of anchor bolts and other projects. technical background: [0002] At present, the early-strength mortar used in my country's engineering has slow strength growth and short operating time, which cannot meet the requirements of modern engineering for early strength, high strength, large fluidity, and operating time of more than half an hour. According to the domestic research results at this stage, the maximum strength of super early strength mortar is close to 20MPa in 2 hours, and the operation time is short and the fluidity is small. The in...

AI Technical Summary

Problems solved by technology

[0002] At present, the early-strength mortar used in my country's engineering has slow strength growth and short operating time, which cannot meet the requirements of modern engineering for early strength, high strength, large fluidity, and operating time of more than half an hour.