Concrete preparation method capable of promoting quick development of strength through pre-aging

A concrete and rapid technology, applied in the direction of clay preparation equipment, chemical instruments and methods, cement mixing equipment, etc., can solve the problems that steam curing does not conform to the direction of social development, increase the cost of concrete steam, and avoid quality defects and performance degradation , shorten the demoulding time and avoid the effect of steam curing process
CN109574571AActive Publication Date: 2019-04-05CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2019-04-05

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Abstract

The invention relates to a concrete preparation method capable of promoting quick development of strength through pre-aging. The method includes: pre-preparing cement paste according to a water cementratio of construction mixing proportion, aging to be close to initial setting, and adding a water reducer to enable the cement paste to reach workability needed for construction to prepare concrete.The concrete is prepared when the cement paste is close to initial setting, and initial setting time of the cement paste is omitted, so that early-stage maintenance time of the concrete is prolonged indirectly, early-stage strength is improved, strength of a prefabricated component can be made to reach 15-25Mpa within 8-16h, requirements on quick demolding, hoisting, stacking and transporting of the prefabricated component are met, mold transfer of enterprises is accelerated, and production efficiency is improved. a steam curing process in conventional prefabricated component making processesis omitted, energy consumption is reduced, and cost is lowered. Concrete quality defect and performance degradation caused by the fact that maintenance conditions are controlled improperly in the process of steam curing can be avoided, and strength and durability of the concrete are improved.
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Description

technical field

[0001] The invention belongs to the technical field of concrete, and in particular relates to a method for preparing concrete that is pre-aged to promote the rapid development of strength Background technique

[0002] Prefabricated buildings are a major change in the way of construction. After World War II, developed countries widely adopted prefabricated construction methods in order to meet the needs of large-scale and rapid construction of housing and the needs of comprehensively improving the quality and quality of buildings. my country's current building construction is still dominated by on-site pouring operations, and the proportion of prefabricated buildings in new buildings is less than 5%, which is far behind the international advanced level. The development of prefabricated buildings is an important manifestation of firmly establishing and implementing the five development concepts of innovation, coordination, greenness, openness, and sharing, and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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