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A kind of asphalt mixture for road and preparation method thereof

A technology for asphalt mixture and road, which is applied in the field of asphalt mixture for road and its preparation, which can solve the problems of strengthening the limitations of road surface construction, increasing exhaust gas dust particles, and unfavorable environmental protection, so as to improve the synergistic effect of compounding and improve the interaction force, improving compactness and structural strength

Active Publication Date: 2021-08-24
四川志德公路工程有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the asphalt with rubber is very viscous, and the mixture needs to be heated to a very high temperature during the construction process, which brings many problems to the mixing, transportation and rolling of the asphalt mixture, and the construction cost is high, especially in high In places where the transportation distance is long and the ambient temperature is generally low in altitude mountainous areas, the temperature of the asphalt mixture drops too quickly during mixing, transportation, rolling, etc., which increases the limitations of road construction and prolongs the construction period. At the same time, the asphalt and Mineral materials also consume a lot of energy, which increases the generation of waste gas and dust particles in the production and construction process, which is not conducive to environmental protection

Method used

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  • A kind of asphalt mixture for road and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present embodiment provides a kind of preparation method of asphalt mixture for road, comprising the following steps:

[0036] Step 1: Weigh 8kg of asphalt, 35kg of basalt gravel, 20kg of limestone gravel, 40kg of pumice, 10kg of blast furnace slag powder, 5kg of sand, 3kg of warm mixing agent, 0.3kg of recycled rubber, 0.2kg of Sepiolite fibers and 0.3kg of gypsum fibers. Among them, the mixture of basalt crushed stone, limestone crushed stone and pumice was sieved together. The pass rate of the sieve mesh with a sieve size of 4.75mm was 29.3%, and the pass rate of a sieve mesh with a sieve size of 9.5mm was 57.9%. The pass rate of the 13.2mm sieve is 82.4%, and the pass rate of the 19mm sieve is 100%. Preheat basalt crushed stone, limestone crushed stone and pumice to 135°C, add sepiolite fiber and polyvinyl alcohol fiber and dry mix at 140°C for 25s to obtain a dry mixed mixture.

[0037] Step 2: Add asphalt and warm mix agent to the dry mix obtained in Step 1,...

Embodiment 2

[0039] The difference between this embodiment and embodiment 1 mainly lies in: the preparation method of the road asphalt mixture of the present embodiment comprises the following steps:

[0040] Step 1: Weigh 9kg of asphalt, 50kg of basalt crushed stone, 25kg of limestone crushed stone, 30kg of granite crushed stone, 6kg of gabbro powder, 8kg of blast furnace slag powder, 4kg of pegmatite powder, 3.5 kg of warm mixing agent, 0.2kg of high-density polyethylene, 0.2kg of recycled rubber, 0.15kg of sepiolite fiber and 0.55kg of gypsum fiber. Among them, the mixture of basalt crushed stones, limestone crushed stones and granite crushed stones was sieved together. The pass rate of the sieve with a sieve size of 4.75mm was 34.8%, and the pass rate of a sieve with a sieve size of 9.5mm was 61.2%. The pass rate of the sieve with a hole size of 13.2 mm was 85.4%, and the pass rate of a sieve with a sieve size of 19 mm was 100%. Preheat basalt crushed stone, limestone crushed stone an...

Embodiment 3

[0043] The difference between this embodiment and embodiment 1 mainly lies in: the preparation method of the road asphalt mixture of the present embodiment comprises the following steps:

[0044] Step 1: Weigh 10kg of asphalt, 48kg of basalt crushed stone, 28kg of limestone crushed stone, 32kg of granite crushed stone, 15kg of blast furnace slag powder, 5kg of pegmatite mineral powder, 4kg of warm mixing agent, 0.22kg of High-density polyethylene, 0.18kg of recycled high-density polyethylene, 0.2kg of sepiolite fiber and 0.7kg of gypsum fiber. Among them, the mixture of basalt crushed stones, limestone crushed stones and granite crushed stones was sieved together. The pass rate of the sieve with a sieve size of 4.75mm was 32.4%, and the pass rate of a sieve with a sieve size of 9.5mm was 62.3%. The pass rate of the sieve with a hole size of 13.2 mm was 80.7%, and the pass rate of a sieve with a sieve size of 19 mm was 100%. Preheat basalt crushed stone, limestone crushed ston...

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Abstract

The invention discloses an asphalt mixture for roads and a preparation method thereof. An asphalt mixture for road is made from the following raw materials in parts by weight: 8-15 parts of asphalt, 95-115 parts of aggregate, 15-25 parts of filler, 3-7 parts of warm mixing agent, 0.3-15 parts of 0.6 parts of anti-rutting agent and 0.5-1.8 parts of stabilizer. The preparation method is as follows: weighing each material according to the formula ratio, preheating aggregates and fillers, mixing dry mixing with stabilizer and anti-rutting agent, adding modified asphalt and warm mixing agent, and mixing evenly to obtain the product. The asphalt mixture prepared by the invention has the advantages of good durability, few cracks and ruts, and is convenient for transportation and construction. In addition, the preparation method of the invention has the advantage of low temperature requirements.

Description

technical field [0001] The invention relates to the technical field of road engineering, more specifically, it relates to an asphalt mixture for roads and a preparation method thereof. Background technique [0002] With the rapid development of road construction in my country, the connection between cities has been strengthened, and cultural exchanges between different regions have also been promoted. Road construction puts forward higher requirements. Asphalt pavement refers to various types of pavement paved with asphalt materials mixed with mineral materials. The asphalt mixture improves the ability of paving aggregates to resist damage to the road surface caused by driving and natural factors, making the road surface smooth and less dusty. Water permeable and durable. The currently commonly used asphalt pavement is various types of pavement formed by paving and rolling asphalt mixture. Stir the resulting mixture well. However, asphalt pavement also has various disease...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B14/14C04B14/28C04B14/16C04B18/142C04B14/06C04B18/22C04B14/4643C04B14/38C04B2103/0068C04B14/048C04B14/04C04B24/2611
Inventor 陈志强曾礼德潘瑜林红平侯超
Owner 四川志德公路工程有限责任公司
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