Wytrzymałość mechaniczna i wodoszczelność kompozytu z karbonatyzowanego gipsu półwodnego i wapna gaszonego

Tian, Yanchao; Wang, Yuli; Zhang, Haibo; Luo, Shuqiong

doi:10.32047/CWB.2023.28.6.2

Artykuł - szczegóły

Tytuł artykułu

Wytrzymałość mechaniczna i wodoszczelność kompozytu z karbonatyzowanego gipsu półwodnego i wapna gaszonego

Autorzy

Tian Yanchao , Wang Yuli , Zhang Haibo , Luo Shuqiong

Wybrane pełne teksty z tego czasopisma

http://www.cementwapnobeton.pl/

Identyfikatory

DOI

10.32047/CWB.2023.28.6.2

Warianty tytułu

Mechanical performance and water resistance of a carbonated hemihydrate gypsum and slaked lime composite

Języki publikacji

PL EN

Abstrakty

W celu poprawy wytrzymałości i odporności na wodę zaczynów z gipsu półwodnego, dodano wapno gaszone i zastosowano technikę utwardzania dwutlenkiem węgla. W pierwszej kolejności wymieszano gips półwodny, wapno gaszone i wodę w różnych proporcjach. Mieszanina została sprasowana pod ciśnieniem 3 MPa w bloki i umieszczona w komorze wypełnionej dwutlenkiem węgla pod ciśnieniem 0,3 MPa. Wyniki testów wytrzymałości mechanicznej pokazują, że gdy stosunek gipsu do wapna wynosi 7 do 3, a stosunek wody do substancji stałej wynosi 0,2, wytrzymałość na ściskanie próbki utwardzonej pod działaniem CO2 może osiągnąć 29,1 MPa, a współczynnik rozmiękania wynosi 1,05. Wyniki badań mikrostruktury pokazują, że głównymi składnikami są gips dwuwodny i węglan wapnia. Te wyniki będą stanowiły wytyczne dla zastosowania karbonatyzowanego kompozytu gipsu półwodnego z wapnem gaszonym.

In order to improve the strength and water resistance of hemihydrate gypsum, slaked lime was incorporated and a carbon dioxide curing technique was used. First, hemihydrate gypsum, slaked lime, and water were mixed at different proportions. The mixture was pressed into block samples by a compression machine at a pressure of 3 MPa and placed a curing kettle full of CO2 at a pressure of 0.3 MPa. The results of mechanical performance tests show that when the ratio of gypsum to lime is 7 to 3 and the water to solid ratio is 0.2, the compressive strength of the sample cured under CO2 can reach 29.1 MPa and the softening coefficient is 1.05. The results of microscopic characterization show that the main constituents are dihydrate gypsum and calcium carbonate. These observations will provide guidance to the application of carbonated hemihydrate gypsum and slaked lime composite.

Słowa kluczowe

siarczan wapnia półwodny wapno gaszone pielęgnacja dwutlenek węgla wodoodporność wytrzymałość na ściskanie

hemihydrate gypsum slaked lime carbon dioxide curing water resistance compressive strength

Wydawca

Fundacja Cement, Wapno, Beton

Czasopismo

Cement Wapno Beton

Rocznik

2023

Tom

R. 28, nr 6

Strony

375--388

Opis fizyczny

Bibliogr. 46 poz., il., tab.

Twórcy

autor

Tian Yanchao

Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering Henan Polytechnic University, Jiaozuo, China

autor

Wang Yuli

Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering Henan Polytechnic University, Jiaozuo, China

autor

Zhang Haibo

Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering Henan Polytechnic University, Jiaozuo, China

autor

Luo Shuqiong

luoshuqiong@hpu.edu.cn

Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering Henan Polytechnic University, Jiaozuo, China

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Bibliografia

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