Road concrete prepared from waterworks sludge powder and coral fine aggregate

A technology of waterworks and sludge powder, which is applied in the field of building materials, can solve the problems of land secondary pollution, etc., and achieve the effect of improving early strength, improving activity, and improving interface transition zone
CN112430040AInactive Publication Date: 2021-03-02SHAOXING MUNICIPAL DESIGN INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAOXING MUNICIPAL DESIGN INST
Publication Date
2021-03-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses road concrete prepared from waterworks sludge powder and coral fine aggregate. The road concrete comprises the following components in parts by weight: 370-430 parts of cement,36-43 parts of waterworks sludge powder, 570-590 parts of river sand, 36-46 parts of coral fine aggregate, 1120-1170 parts of broken stone, 4-16 parts of quicklime powder, 1-4 parts of gypsum powder,166-183 parts of water and 5-9 parts of water reducing agent, wherein the water-binder ratio is 0.35-0.45. According to the invention, waterworks sludge powder is used as a mineral admixture to replace part of cement, and quicklime powder and gypsum powder are doped to further stimulate and improve the activity of the waterworks sludge powder; and coral fine aggregate is used for replacing part of river sand, aggregate grain composition and the 'micro-pump' effect of the coral aggregate are further improved, the local water-binder ratio of the aggregate surface can be adjusted, and the performance of concrete for roads is improved. The concrete for the road is prepared from the perspective of optimal design of cementing materials and aggregates, so that the performance of the concrete isimproved, the high-added-value green application of sludge powder and coral fine aggregates of waterworks is facilitated, and the comprehensive benefit is high.
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Description

technical field

[0001] The invention relates to the technical field of building materials, in particular to road concrete prepared from waterworks sludge powder and coral fine aggregate. Background technique

[0002] Since the advent of concrete, it has greatly accelerated the development of national infrastructure projects, especially the development of road construction. The design strength of concrete for highways generally adopts the 28-day bending and tensile strength of cement concrete. Compared with ordinary concrete that uses the 28-day cubic compressive strength as the design strength, its strength requirements are higher, and the design bending and tensile strength of the traffic load class is light. 4.0MPa, medium grade is 4.5MPa, heavy, extra heavy and extremely heavy grade is above 5.0MPa. With the increasing scale of my country's infrastructure, traditional raw materials such as cement and natural aggregates can no longer meet the construction needs. Therefore...

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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