Unlock instant, AI-driven research and patent intelligence for your innovation.

Super-early-strength water-reducing concrete and preparation method thereof

A concrete and water reducing agent technology, applied in the field of concrete, can solve the problems of concrete age, cost, slump, air volume strength and other problems, and achieve the effect of shortening the construction period, small creep coefficient and strong crack resistance

Inactive Publication Date: 2021-01-15
青岛青泰建筑科技有限公司 +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the poor performance of concrete age, cost, slump, air volume changes, strength performance and other properties in the prior art, as well as the cracks caused by early-strength cement, the present invention provides a super early-strength water concrete

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Super-early-strength water-reducing concrete and preparation method thereof
  • Super-early-strength water-reducing concrete and preparation method thereof
  • Super-early-strength water-reducing concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 prepares super early strength water-reducing concrete of the present invention

[0024] Super early strength water-reducing concrete includes the following components, early-strength Portland cement, AE water reducer, coarse aggregate, fine aggregate and water; the unit water volume of the concrete is 180kg / m 3 , the unit amount of cement is 300kg / m 3 , the unit amount of fine aggregate is 699kg / m 3 , the unit coarse aggregate amount is 947kg / m 3 , AE water reducing agent lignosulfonate water reducing dosage is 2.5kg / m 3 , the water-cement ratio (w / c) of the concrete is 40%, and the sand rate is 48.5%.

[0025] The preparation method of described super early strength water-reducing concrete is as follows:

[0026] 1) Aggregate pretreatment Weigh each raw material according to the proportion, mix the coarse aggregate, fine aggregate and early-strength Portland cement and mix evenly, and mix and stir to obtain the pretreated aggregate;

[0027] 2) Concre...

Embodiment 2

[0028] Embodiment 2 prepares super early strength water-reducing concrete of the present invention

[0029] Super early strength water-reducing concrete includes the following components, early-strength Portland cement, AE water reducer, coarse aggregate, fine aggregate and water; the unit water volume of the concrete is 180kg / m 3 , the unit amount of cement is 450kg / m 3 , the unit amount of fine aggregate is 853kg / m 3 , the unit coarse aggregate amount is 979kg / m 3 , the amount of AE superplasticizer naphthenate superplasticizer is 4.32kg / m 3 , the water-cement ratio (w / c) of the concrete is 60%, and the sand rate is 48.5%;

[0030] The preparation method of described super early strength water-reducing concrete is as follows:

[0031] 1) Aggregate pretreatment Weigh each raw material according to the proportion, mix the coarse aggregate, fine aggregate and early-strength Portland cement and mix evenly, and mix and stir to obtain the pretreated aggregate;

[0032]2) Conc...

Embodiment 3

[0033] Embodiment 3 prepares super early strength water-reducing concrete of the present invention

[0034] Super early strength water-reducing concrete includes the following components, early-strength Portland cement, AE water reducer, coarse aggregate, fine aggregate, polyalkylene glycol compounds and water; the unit water volume of the concrete is 180kg / m 3 , the unit cement volume is 380kg / m 3 , the unit amount of fine aggregate is 776kg / m 3 , the unit coarse aggregate amount is 963kg / m 3 , AE water reducing agent lignosulfonate water reducing dosage is 3.41kg / m 3 , the water-cement ratio (w / c) of the concrete is 50%, and the sand rate is 45.6%.

[0035] The preparation method of described super early strength water-reducing concrete is as follows:

[0036] 1) Aggregate pretreatment Weigh each raw material according to the proportion, mix the coarse aggregate, fine aggregate and early-strength Portland cement and mix evenly, and mix and stir to obtain the pretreated a...

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
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
densityaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of concrete, and particularly relates to super-early-strength water-reducing concrete and a preparation method thereof. The early-strength Portland cementconcrete comprises the following components: early-strength Portland cement, an AE water reducing agent, coarse aggregate, fine aggregate and water. The concrete has the unit water quantity of 180 kg / m<3>, the unit cement quantity of 300-450 kg / m<3>, the unit fine aggregate quantity of 699-853 kg / m<3>, the unit coarse aggregate quantity of 947-979 kg / m<3>, the AE water reducing dosage of 2.5-4.32kg / m<3>, the water cement ratio (w / c) of 40-60% and the sand ratio of 42.8-48.5%. The concrete provided by the invention has better properties such as age, cost, slump, change of air quantity, strength and the like, and the problem of cracks caused by early strength cement is improved to a certain extent.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a super-early-strength water-reducing concrete and a preparation method thereof. Background technique [0002] The factors that affect the age of concrete have been a topic that researchers of building materials have been paying attention to in the past 20 to 30 years. In the construction of cast-in-place reinforced concrete structures, after the concrete is poured, the time and process of other operations need to wait before its strength reaches the formwork removal strength and design standard strength. It has been recognized for decades. On the other hand, if the main body of the building structure is constructed with a steel structure, there is no need to consider this factor at all. In construction projects, it is a big issue to make the age of concrete equal to that of steel. If the concrete can reach its strength a little super fast, that is, eliminate the "age constra...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/05C04B2201/50C04B2103/302C04B18/12C04B14/06
Inventor 铃木计夫张峻然
Owner 青岛青泰建筑科技有限公司