The impact of changes in the geological conditions of road bedrock layers while road was in use

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27120%2F19%3A10242488" target="_blank" >RIV/61989100:27120/19:10242488 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.2478/otmcj-2019-0008" target="_blank" >https://doi.org/10.2478/otmcj-2019-0008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/otmcj-2019-0008" target="_blank" >10.2478/otmcj-2019-0008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The impact of changes in the geological conditions of road bedrock layers while road was in use

Popis výsledku v původním jazyce

This article examines the effective road reconstruction technologies applied during construction processes to ensure a required final quality of construction work. The construction quality and especially the overall levelness of roads is influenced by several factors. These factors include high-quality implementation of road structural layers, including active zones, which can be adversely affected by undisciplined application of technology, insufficient engineering and poor geological surveys. Suitable and effective reconstruction technology n provides the required quality of construction work yet does not significantly extend construction time. The authors propose stabilization using cement or lime during reconstruction. This stabilization method is used if the structure of the bedrock layers is finely granular. The stabilization process consists of excavating the unacceptable bedrock layer and mixing it with additives and water. New additives for bitumen and bentonite bedrock have recently been developed. Their application achieves strength characteristics of the road base layers comparable to conventional additives. A principally different bedrock stabilization method consists of completely replacing it with a gravel layer, which is used when individual base layers are diverse and stabilization using additives would not guarantee the required results, i.e. improved strength characteristics. In some cases, the existing base layers are not suitable for use as road base layers because of their characteristics, such as volumetric instability. For this reason, they must be replaced with more suitable materials. This topic is documented using a practical example.

Název v anglickém jazyce

The impact of changes in the geological conditions of road bedrock layers while road was in use

Popis výsledku anglicky

This article examines the effective road reconstruction technologies applied during construction processes to ensure a required final quality of construction work. The construction quality and especially the overall levelness of roads is influenced by several factors. These factors include high-quality implementation of road structural layers, including active zones, which can be adversely affected by undisciplined application of technology, insufficient engineering and poor geological surveys. Suitable and effective reconstruction technology n provides the required quality of construction work yet does not significantly extend construction time. The authors propose stabilization using cement or lime during reconstruction. This stabilization method is used if the structure of the bedrock layers is finely granular. The stabilization process consists of excavating the unacceptable bedrock layer and mixing it with additives and water. New additives for bitumen and bentonite bedrock have recently been developed. Their application achieves strength characteristics of the road base layers comparable to conventional additives. A principally different bedrock stabilization method consists of completely replacing it with a gravel layer, which is used when individual base layers are diverse and stabilization using additives would not guarantee the required results, i.e. improved strength characteristics. In some cases, the existing base layers are not suitable for use as road base layers because of their characteristics, such as volumetric instability. For this reason, they must be replaced with more suitable materials. This topic is documented using a practical example.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Organization, Technology and Management in Construction

ISSN

1847-5450

e-ISSN

—

Svazek periodika

19

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

13

Strana od-do

2009-2021

Kód UT WoS článku

000495893000001

EID výsledku v databázi Scopus

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