|Table of Contents|

Preparation and performance of high performance grouting sealant for asphalt pavement in humid and hot areas(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2023年5期
Page:
11-20
Research Field:
道路工程
Publishing date:

Info

Title:
Preparation and performance of high performance grouting sealant for asphalt pavement in humid and hot areas
Author(s):
FENG Xin-jun;  LIANG Hui;  PENG Cheng
(School of Traffic and Transportation Engineering, Changsha University of Science & Technology,Changsha 410114, Hunan, China)
Keywords:
road engineering;  humid and hot area;  grouting sealant;  orthogonal test;  optimal mix ratio;  performance evaluation
PACS:
U414
DOI:
10.19721/j.cnki.1671-8879.2023.05.002
Abstract:
In order to develop a high-performance grouting adhesive that suitable for asphalt pavement in hot and humid areas and to improve the durability of asphalt pavement, SBS polymer, waste rubber powder, bio-oil, sulfur and C9 petroleum resin were used to modify SK70# base asphalt, and based on the five-factors, four-levels orthogonal test, the flow value of the grouting adhesive for asphalt pavements, the softening point, the 5 ℃ ductility, the taper degree and the elasticity of the elasticity of the restoration test were used as the evaluation indexes. Polar deviation analysis and hierarchical analysis were used to investigate the effects of SBS polymer dosage, waste rubber powder dosage, bio-oil dosage, sulfur dosage and C9 petroleum resin dosage on the technical indexes of asphalt pavement grouting adhesive, and to determine the optimal mixing ratios of high-performance grouting adhesive for hot and humid asphalt pavements. The construction and ease of high-performance grouting adhesive were evaluated by Brinell rotational viscosity test, and the construction aging performance of high-performance grouting adhesive and the aging performance in use process were evaluated by simulated construction aging test and asphalt rotating film heating test(RTFOT), and the water stability of high-performance grouting adhesive for hot and humid areas of asphalt pavements were evaluated based on the freezing and thawing cyclic pullout test of the MTS universal testing machine. The results show that hot and humid areas of asphalt pavement high-performance grouting adhesive with the optimal ratio of SBS polymer dosage(mass fraction, the same below)of 8%, powder dosage of 14%, bio-oil dosage of 3%, sulfur dosage of 0.2%, C9 petroleum resin dosage of 0%. Preparation of hot and humid areas of asphalt pavement high-performance grouting adhesive conventional physical properties to meet the specification requirements, and the softening point exceeds the specification requirements of 10.1 ℃, taper less than the specification requirements of the maximum limit of 41.1%, 5 ℃ elongation up to 32.3 cm, elasticity recovery rate of the specification range of close to the high value of the reasonable construction temperature of 182 ℃, and has excellent aging resistance and water stability.11 tabs, 5 figs, 24 refs.

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Last Update: 2023-10-10