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

A pouring type normal temperature cementitious material and normal temperature pouring type asphalt concrete

A technology of pouring asphalt concrete, which is applied in the field of pouring normal temperature cement and normal temperature pouring asphalt concrete, can solve the problems of high construction temperature, reduce the difficulty of mixing construction, improve fluidity and enhance cohesion

Active Publication Date: 2022-05-10
CHONGQING SPECIAL ENG TECH +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of high construction temperature of poured asphalt concrete in the prior art, the present invention provides a poured normal temperature cement and normal temperature poured asphalt concrete, the purpose of which is to reduce the construction temperature of poured asphalt concrete and reduce the difficulty of construction

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
  • A pouring type normal temperature cementitious material and normal temperature pouring type asphalt concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of asphalt paste: heat No. 70 base asphalt to 150°C, add 60 parts of asphalt to 100 parts of polyetheramine D230, stir evenly to obtain asphalt paste, keep warm at 60°C for later use;

[0032] (2) Preparation of component A: 50 parts of 305, 20 parts of RWPE450 and 6.13 parts of MN-500 are vacuum dehydrated at a temperature of 100°C to 120°C for 1 to 2 hours, then cooled to 75°C and added with 20 parts of asphalt paste, aromatic hydrocarbon Mix 2 parts of oil, 0.8 parts of BYK-108, and 1 part of KH560 evenly, vacuum dehydrate for 1 to 4 hours, cool down to room temperature, add 0.07 parts of dibutyltin dilaurate and stir evenly to obtain component A;

[0033] (3) Preparation of component B: vacuum dehydrate 15 parts of 204 and 10 parts of LE-305 at a temperature of 100℃~120℃ for 1~2 hours, cool down to 50~60℃, and react with 75 parts of isophorone diisocyanate 1 to 3 hours to obtain component B;

[0034] (4) Preparation of castable normal temperature ce...

Embodiment 2

[0037] (1) Preparation of asphalt paste: heat No. 70 base asphalt to 150°C, add 60 parts of asphalt to 100 parts of polyetheramine D230, stir evenly to obtain asphalt paste, keep warm at 60°C for later use;

[0038](2) Preparation of component A: Vacuumize 50 parts of 303, 30 parts of RWPE450 and 12.32 parts of MN-700 at a temperature of 100°C to 120°C for 1 to 2 hours, then cool down to 65°C and add 5 parts of asphalt paste, ring Mix 1 part of paraffin oil, 0.6 part of Dispers710, and 1 part of KH550 evenly, vacuum dehydrate for 1-4 hours, cool down to room temperature, add 0.08 part of stannous octoate and stir evenly to obtain component A;

[0039] (3) Preparation of component B: vacuum dehydrate 10 parts of 220 and 10 parts of 360 at a temperature of 100°C to 120°C for 1 to 2 hours, then lower the temperature to 50 to 60°C, and mix with carbodiimide modified diphenyl React 30 parts of methane diisocyanate and 50 parts of diphenylmethane diisocyanate for 1-3 hours to obtain...

Embodiment 3

[0043] (1) Preparation of asphalt paste: heat No. 70 base asphalt to 150°C, add 60 parts of asphalt to 100 parts of polyetheramine D230, stir evenly to obtain asphalt paste, keep warm at 60°C for later use;

[0044] (2) Preparation of component A: Vacuum dehydrate 50 parts of DV125 and 33.95 parts of RWPE450 at a temperature of 100°C to 120°C for 1 to 2 hours, then cool down to 75°C and add 12 parts of asphalt paste, 2 parts of aromatic oil, BYK- Stir 1 part of 108 and 1 part of KH832 evenly, vacuum dehydrate for 3 hours, cool down to room temperature, add 0.05 part of dibutyltin dilaurate and stir evenly to obtain component A;

[0045] (3) Preparation of component B: vacuumize and dehydrate 10 parts of 220 and 20 parts of LE-305 at a temperature of 100°C for 2 hours, then lower the temperature to 60°C, and react with 70 parts of isophorone diisocyanate for 1 to 3 hours, namely Get B component;

[0046] (4) The ratio of component A to component B: 1:1.1;

[0047] (5) Prepara...

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

No PUM Login to View More

Abstract

The invention discloses a pouring type normal temperature cementing material and a normal temperature pouring type asphalt concrete, which belong to the field of civil engineering pavement. The invention solves the problems of high construction temperature and difficult construction of pouring asphalt concrete in the prior art. The technical proposal is as follows: normal-temperature pouring asphalt concrete includes 100 parts of graded aggregate and 10-30 parts of pouring-type normal-temperature cementing material in parts by weight. The castable room temperature cement is composed of component A and component B. In terms of weight percentage, the component A specifically includes: 81-93% polyether polyol, 5-20% asphalt paste, 1-20% immersion oil 5%, dispersant 0.2-3%, coupling agent 0.2-3%, catalyst 0.05-2%; the B component specifically includes: polyisocyanate 70-95%, polyether polyol 10-40%. The normal-temperature pouring asphalt concrete provided by the invention does not need to be heated during mixing, which reduces the difficulty of concrete mixing and construction, and compared with traditional thermoplastic asphalt materials, the high-temperature thermal stability is improved.

Description

technical field [0001] The invention belongs to the field of pavement pavement in civil engineering, and in particular relates to a pouring type normal temperature cementing material and a normal temperature pouring type asphalt concrete. Background technique [0002] Pourable asphalt concrete Guss asphalt (abbreviated as GA) refers to a kind of high asphalt content, high mineral powder content and void space that is mixed at high temperature (220 ° C ~ 260 ° C) and paved by the fluidity of the mixture itself without rolling. Asphalt mixtures with a content of less than 1%. Its main advantages are: (1) No gaps, impermeable, while protecting the safety of the bridge structure, it can prevent light, oxygen, and water by itself, and there is almost no problem of aging and freezing and thawing; (2) The temperature of the mixture is as high as 240 ° C, which is suitable There are no special requirements for the environmental conditions on site, and without rolling, the performan...

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 Patents(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B24/32C04B24/08C04B24/125C04B2103/10C04B2103/0068
Inventor 刘艳张蓉闫东波张晓华刘强罗丝雨
Owner CHONGQING SPECIAL ENG TECH