Construction Technology of Warm Mix Retardant Asphalt Mixture

2013 ◽  
Vol 361-363 ◽  
pp. 1477-1483 ◽  
Author(s):  
Hong Zhao ◽  
Xiu Shan Wang ◽  
He Quan Lu ◽  
Xiao Ling Lu
Keyword(s):  
Asphalt Mixture ◽  
Material Design ◽  
Warm Mix Asphalt ◽  
Construction Technology ◽  
Construction Quality ◽  
The Road ◽  
Environment Quality ◽  
New Material ◽  
Design Construction

As a new material, the warm mix asphalt retardant asphalt mixture has its particularity in material design, construction proportion, mixture preparation and on-site paving. This paper summarized the construction process and site construction quality inspection requirement of the warm mix asphalt retardant asphalt mixture through tracking research on-site based on the real engineering. It was shown that the road environment quality of using warm mix retardant asphalt was significantly better than normal hot mix asphalt, asphalt smoke, benzene soluble and Benzopyrene decreased 91.47%, 97.05% and 80.11% respectively. Warm mix asphalt retardant asphalt mixture had a low mixing and compaction temperature. When used in the tunnel pavement, it could not only greatly reduce harmful gas emissions in the process of construction, improve construction environment in tunnel, improve the air transparency in tunnel, be convenient for construction quality management, but also can improve the fire resilience of the tunnel pavement after be put into operation. It had broad application prospect in the tunnel pavement.

scholarly journals KARAKTERISTIK CAMPURAN AC-WC MENGGUNAKAN MATERIAL RECLAIMED ASPHALT PAVEMENT DENGAN TAMBAHAN ASPAL PEN. 60/70 YANG DISUBSTITUSI STYROFOAM

2019 ◽  
Vol 2 (2) ◽  
pp. 149-157
Author(s):  
Hendra Arianto ◽  
Sofyan M. Saleh ◽  
Renni Anggraini
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Reclaimed Asphalt Pavement ◽  
Additional Material ◽  
Reclaimed Asphalt ◽  
The Road ◽  
Concrete Type ◽  
Technical Specifications ◽  
Parameter Values

Reuse of reclaimed asphalt pavement material (RAP) is an alternative which applicated for potential enough on the roughness of the road. RAP material can be reused by adding the asphalt and the new aggregate according of the mixture composition so that it is expected will be obtained the quality as planned. One of the efforts made in improving the quality of asphalt mixture RAP material is using a modified asphalt with additional material, such as styrofoam. The use of styrofoam into the asphalt is expected to improve the technical properties of a mixture. The purpose of this research is to know the comparative characteristics of hot mix asphalt (asphalt concrete) type AC-WC that uses RAP material with additional asphalt pen. 60/70 and asphalt pen. 60/70 substitution in the styrofoam by 8%, 10% and 12% against the weight of asphalt based on levels of asphalt left on the material. The initial stages of this study is to conduct an examination of the physical properties of RAP material, then manufacturing a specimen with variations of the addition of asphalt and aggregate new levels based on the job mix diesign (JMD) Bina Marga Aceh (2013). Based on research results, parameter values marshall on all types of asphalt mixture with new aggregate as well as RAP materials and the use of 100% asphalt pen. 60/70 additional or different types of asphalt on OAC has fulfilled the technical specifications defined by the Bina Marga (2014). Best stability values obtained on asphalt mixture using RAP material with additional asphalt pen. 60/70 with 12% styrofoam substitution on OAC JMD Bina Marga Aceh, that amounted to 3,308.72 kg, the lowest value stability retrieved on asphalt mixture using a new aggregate based on the results of Department of Bina Marga Aceh on OAC i.e. of 983.94 kg.

scholarly journals ALTERNATIF PENGGUNAAN SERAT ECENG GONDOK UNTUK MENINGKATKAN INDEX PROPERTIES OF MARSHALL PADA CAMPURAN LASTON TIPE I SNI 03-1737-1989

UKaRsT ◽  
2018 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Dwi Kartikasari ◽  
Samsul Arif
Keyword(s):  
Water Hyacinth ◽  
Asphalt Mixture ◽  
Flexible Pavement ◽  
Type I ◽  
The Road ◽  
Concrete Layer ◽  
Marshall Test ◽  
Marshall Stability ◽  
Water Hyacinth Fiber

However, flexible pavement has many disadvantages, such as early damage to the road surface after some time has passed by traffic so the road cannot reach the planned age. For this reason, a research was carried out to add hot asphalt mixture which aims to improve the quality of the mixture, the selected material is natural water hyacinth. The method used is trial and error with reference SNI 031737-1989. Variations used were 3%, 5%, and 7% of asphalt weight, the level of asphalt used was 4.48%. Of the 3 variations of the mixture used in Type I Asphalt Concrete Layer, the results obtained that the water hyacinth fiber content that has the best score and meet the specifications of SNI 03-1737- 1989 is the percentage of 7% obtained. from the calculation data using graphs and regression models where Marshall Stability is 889.73 Kg, VFWA (voids filled with asphalt) are equal to 65.97%, VIM (voids in mixtures) are equal to 1.757%, VMA (voids in mineral aggregates ) is equal to 20.30%, density 2.420 gr / cc, Flow 3.37 mm, and Marshall Quotient of 265.80 Kg / mm.Keywords : flexible pavement, water hyacinth fiber, Marshall test.

Study on the Capacity Increasing and Dam Heighten of Plain Reservoirs

2013 ◽  
Vol 353-356 ◽  
pp. 2531-2536
Author(s):  
Xiu Guang Song ◽  
Zhi Dong Zhou ◽  
Hong Bo Zhang ◽  
Hong Ya Yue
Keyword(s):  
Numerical Simulation ◽  
Comparative Analysis ◽  
Site Investigation ◽  
Seepage Flow ◽  
Differential Settlement ◽  
Construction Technology ◽  
Dam Stability ◽  
The Stability ◽  
Design Construction

In order to solve the problem of differential settlement, seepage flow and stability between the new and old dam boundary in capacity increasing of the plain reservoirs, the comparative analysis on the stability of the dam slope with different methods on dealing with the new and old dam boundary was performed by numerical simulation with FLAC3D. The result shows that combining the new and old dam by using geogrid indicates superiority for reducing differential settlement, improving the dam stability and safety, etc. In the meantime, on the basis of actual site investigation and theoretical analysis, combined with the requirements of design, construction and management in capacity increasing of the plain reservoirs, the key construction technology was put forward and widely applied foreground, which can improve the quality of the construction, reduce engineering disease and provide references for capacity increasing engineering of in plain reservoirs.

scholarly journals Study on Slope treatment and Greening construction technology of Road Engineering

2020 ◽  
Vol 165 ◽  
pp. 04005
Author(s):  
Zhengwei Feng ◽  
Longbin Lin
Keyword(s):  
Direct Seeding ◽  
Ecological Environment ◽  
Construction Technology ◽  
Large Area ◽  
Road Engineering ◽  
Engineering Construction ◽  
The Road ◽  
Construction Techniques ◽  
Slope Treatment

Slope greening is an important part of road engineering construction. Its main purpose is to improve the ecological environment on the side of the road and improve its ability to resist geological disasters.The engineering features of this paper are long road engineering, large area of slope treatment. It analyzes the technical difficulties in the construction of slope greening project, such as large excavation depth, more stone slopes along the road, serious exfoliation of external soil and less nutrients in the soil. In view of the above technical difficulties, the key construction techniques such as excavation and filling slope construction, external soil direct seeding, spray seeding of external soil with hanging net, slope maintenance, combination of skeleton protection and plant slope protection are studied. It ensured the quality of the project and provided reference for the construction of related projects.

Research on Application of Warm Mix Asphalt Technology in Hot In-Place Recycled Engineering

2013 ◽  
Vol 361-363 ◽  
pp. 1655-1658
Author(s):  
Xiao Li Li ◽  
Qing Zhou Wang ◽  
Shu Yan Liu
Keyword(s):  
Asphalt Mixture ◽  
Temperature Stability ◽  
Warm Mix Asphalt ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Recycled Asphalt ◽  
Marshall Test ◽  
Recycling Technology ◽  
Research On Application

Because of the heating limitation of old pavement and the restriction of climate, the quality of hot in-place recycled pavement was different to control. The warm m,ix asphalt technology was introduced to improve the heterogeneity and compactness of the hot in-place recycled pavement and decrease its construction temperature. The compaction characteristics of warm in-place recycled asphalt mixture were analyzed and its molding temperature was determined through the Marshall test. The pavement performance of warm in-place recycled asphalt mixture was analyzed whose results indicated that the introduction of warm mix asphalt technology was able to improve the compactness, the high temperature stability and water stability of hot in-place recycled asphalt mixture and reduce the influence of environment over its construction quality. A warm in-place recycled engineering of Shian expressway was introduced to verify the feasibility of warm in-place recycling technology which demonstrated that the warm in-place recycling technology was able to improve the heterogeneity and compaction quality of the recycled pavement and weaken the environmental pollution.

scholarly journals Discussion on the Safe and Guaranteed Access of Interchange Widening in Reconstruction and Extension of Highway

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Heng Zhang ◽  
Xuguang Zheng ◽  
Jing Zhou
Keyword(s):  
Construction Technology ◽  
Construction Quality ◽  
Important Thing ◽  
Safeguard Measures ◽  
Specific Construction ◽  
Main Construction

In the process of reconstruction and extension of highways, the most important thing is to ensure that the overall level of the widening of interchanges is comprehensively improved to ensure safe traffic. However, due to the heavy and difficult tasks in the widening of interchanges, higher requirements are put forward for the construction quality of the project. In the actual construction of the project, it is necessary to actively analyze and explain the specific construction of the interchange widening project to ensure that the improvement level of the interchange widening in highway reconstruction and extension project is effectively upgraded. This paper gives a detailed introduction to the main construction technology for interchange widening project, clarifies the technical points of safety and guaranteed access, and proposes corresponding safeguard measures to ensure the comprehensive upgrade of the construction quality and standard of interchange widening in highway reconstruction and extension.

scholarly journals SERAT ECENG GONDOK SEBAGAI BAHAN ALTERNATIF ADMIXTURE PADA LASTON TIPE XI SNI 03-1737-1989 DITINJAU TERHADAP NILAI-NILAI UJI MARSHALL

Jurnal CIVILA ◽  
2018 ◽  
Vol 3 (2) ◽  
pp. 154
Author(s):  
Errine Yulia Rizqi Intanti ◽  
Zulkifli Lubis
Keyword(s):  
Water Hyacinth ◽  
Asphalt Mixture ◽  
Road Construction ◽  
Flexible Pavement ◽  
The Road ◽  
Concrete Layer ◽  
Wide Range ◽  
On The Road ◽  
Marshall Stability

In Indonesia, the road construction has experienced a fairly good development. From a wide range of road constructions, flexible pavement is the most chosen one because its characteristics: easy, fast, and efficient. However, flexible pavement has many weaknesses, for example the premature damage on the road surface after some time passed by the traffic so that the road cannot reach the planned age. For that, it is done a research to add a hot asphalt mixture material that aims to improve the quality of the mixture results. The selected ingredient is natural water hyacinth. The method used is trial and error with reference of SNI 03-1737-1989. Variations used are 2%, 4%, 6%, 8% and 10% of the asphalt weight, asphalt level used is 5.72 %. Of the 5 variations of mixture used on Type XI Asphalt Concrete Layer, it is obtained the result that the water hyacinth fiber level which has the best score and meet the specifications of SNI 03-1737-1989 is on the percentage of 6% which obtained from calculation data using graphs and regression model where Marshall Stability is equal to 644,46 Kg, flow 3,39 mm, VMA (voids in the mineral aggregate) is equal to 13,83 %, VFWA (voids filled with asphalt) is equal to 65,35%, VIM (voids in the mix) is equal to 2,52 %, density of 2.31 gr/cc, and Marshall Quotient of 164.03 Kg / mm.

scholarly journals An Analysis on the Construction Technology and Management of Water Resources and Hydropower Projects

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Yong Xiao ◽  
Jidong Chai ◽  
Shun Xiao
Keyword(s):  
Social Benefits ◽  
Construction Technology ◽  
Construction Quality ◽  
Construction Companies ◽  
Quality Of Water ◽  
Water Conservancy ◽  
Construction Efficiency ◽  
National Infrastructure ◽  
Construction Works

As an important national infrastructure, the construction quality of water conservancy and hydropower projects is not only related to people's production and life, but also directly linked to the development of the national economy. Therefore, ensuring the quality of construction works is of great significance. The construction quality of water conservancy and hydropower projects depends to a large extent on the level of construction technology. In addition, construction technology is also inextricably linked to construction efficiency and construction cost. Therefore, construction companies must pay attention to the construction technology management of water conservancy and hydropower projects, and adopt scientific and reasonable construction technology to ensure the project according to the actual situation of construction Quality, give full play to the economic and social benefits brought by the construction of water conservancy and hydropower projects.

Aerated Concrete Block Filler Wall Construction Technology and Quality Control of Preventive Measures

2014 ◽  
Vol 1004-1005 ◽  
pp. 1492-1495
Author(s):  
Li Mei Wang ◽  
Feng Mei Pi ◽  
Ya Jie Yuan
Keyword(s):  
Preventive Measures ◽  
Material Design ◽  
Concrete Block ◽  
Effective Control ◽  
Wall Material ◽  
Construction Technology ◽  
Block Wall ◽  
Aerated Concrete ◽  
Wall Construction ◽  
Design Construction

Based on aerated concrete block wall material, design, construction three aspects under effective control, so as to avoid the cracking of the wall and carry out.

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