Research on the properties of rubber concrete containing surface-modified rubber powders

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00343680" target="_blank" >RIV/68407700:21110/21:00343680 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jobe.2020.101991" target="_blank" >https://doi.org/10.1016/j.jobe.2020.101991</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jobe.2020.101991" target="_blank" >10.1016/j.jobe.2020.101991</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Research on the properties of rubber concrete containing surface-modified rubber powders

Popis výsledku v původním jazyce

Through the comparison of several modified rubber powders and their corresponding rubber concrete, the influence of rubber surface modification on the properties of rubber concrete and the engineering practicability of rubber concrete prepared by different rubber modification methods are understood. The surface changes of rubber modified by sodium hydroxide, sulfonation and urea were studied by contact angle and infrared spectroscopy. The basic mechanical properties and impact resistance of modified rubber concrete were studied by SEM and software image analysis. The results show that the rubber modification can improve the interaction between cement paste and rubber and improve the adhesion between them. Compared with ordinary rubber concrete, the compressive strength of rubber concrete treated with sodium hydroxide is only slightly improved, but its flexural strength，tensile splitting strength and impact resistance are greatly improved. After the rubber is modified by urea or sulfonation, a variety of polar groups are introduced on the rubber surface, which increases the mutual attraction between rubber particles and cement paste, improves the compressive strength, tensile splitting strength, flexural strength and impact resistance of rubber concrete, and greatly reduces the strength loss of rubber concrete. Rubber modification improves the performance of rubber concrete, showing good application potential.

Název v anglickém jazyce

Research on the properties of rubber concrete containing surface-modified rubber powders

Popis výsledku anglicky

Through the comparison of several modified rubber powders and their corresponding rubber concrete, the influence of rubber surface modification on the properties of rubber concrete and the engineering practicability of rubber concrete prepared by different rubber modification methods are understood. The surface changes of rubber modified by sodium hydroxide, sulfonation and urea were studied by contact angle and infrared spectroscopy. The basic mechanical properties and impact resistance of modified rubber concrete were studied by SEM and software image analysis. The results show that the rubber modification can improve the interaction between cement paste and rubber and improve the adhesion between them. Compared with ordinary rubber concrete, the compressive strength of rubber concrete treated with sodium hydroxide is only slightly improved, but its flexural strength，tensile splitting strength and impact resistance are greatly improved. After the rubber is modified by urea or sulfonation, a variety of polar groups are introduced on the rubber surface, which increases the mutual attraction between rubber particles and cement paste, improves the compressive strength, tensile splitting strength, flexural strength and impact resistance of rubber concrete, and greatly reduces the strength loss of rubber concrete. Rubber modification improves the performance of rubber concrete, showing good application potential.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/8JCH1002" target="_blank" >8JCH1002: Sdružené rejuvenační účinky u zestárnutého asfaltového pojiva z asfaltového recyklátu s využitím aditiv z bio-odpadů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Building Engineering

ISSN

2352-7102

e-ISSN

2352-7102

Svazek periodika

35

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

—

Kód UT WoS článku

000618183400003

EID výsledku v databázi Scopus

2-s2.0-85096514731