Characteristic analysis of air bubbles on the rheological properties of cement mortar

2022 ◽  
Vol 316 ◽  
pp. 125812
Author(s):  
Tengfei Guo ◽  
Min Qiao ◽  
Xin Shu ◽  
Lei Dong ◽  
Guangcheng Shan ◽  
...  
Author(s):  
Sandipan Kaushik ◽  
Mohammed Sonebi ◽  
Giuseppina Amato ◽  
Arnaud Perrot ◽  
Utpal Kumar Das

This paper aims to discuss the influence of mix composition of cement mortar on fresh and rheological properties of cement mortar. Two different natural fibres, basalt (BA) and sisal (SL) are selected based on fresh and rheological behaviour for its usability in a cementitious mixture. The workability and rheological behaviour are evaluated by flow table test, cone penetrometer and slump test of the mixture. A full factorial design method was used to investigate the effects of four mix components: dosage of cement content (B), percentage of fly-ash (FA) by mass of cement, dosage of basalt fibre (BA) and dosage of superplasticizer (SP) along with a water/binder ratio of 0.41. A mathematical model which predicts the main effect and interactions of these components for each of the measured properties are derived using the factorial design. The proposed mixtures consist of two levels of binder content as 550 kg/m3 and 650 kg/m3, FA as 5% and 20% by mass of cement, BA as 1 kg/m3 to 3 kg/m3 and SP as 2 kg/m3 to 4 kg/m3. By reducing the number of test batches needed, the mathematical models produced with this method can expedite optimizing the mixture proportions of cement mortar to achieve desired fresh and rheological properties.


Mortar is a significant glue used to tie building squares, for example, stones, squares, and solid square work units together, fill and seal the sporadic holes among them, and from time to time join flawless shades or models in workmanship dividers. In its broadest sense mortar wires pitch, dull top, and delicate mud or soil, for example, utilized between mud blocks The sort and degree of the fix mortar is coordinated by a mortar examination. There are a couple of sorts of bond mortars and included substance. The tamarind tree produces unit like common item, which contain a consumable crush that is used in cooking styles the world over. Various livelihoods of the crush join standard medicine and metal clean. The wood can be used for carpentry, and tamarind seed oil can be isolated from the seeds. Because of the tamarind's various uses, advancement has spread far and wide in tropical and subtropical zones. The magnificent gelling cum bond properties of the decorticated seed powder can incite a couple of uses in sustenance and pharmaceutical ventures which are evident by the amount of research papers similarly as patent applications. This article thusly bases on the possible results of using the seed in a couple of sustenance and non-sustenance endeavors with explicit reference to physical and structuring properties, hydration direct, rheological properties, valuable and healthy qualities, and the planning of the tamarind seed for progressively broad applications


Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 754
Author(s):  
Fang Liu ◽  
Baomin Wang ◽  
Yunqing Xing ◽  
Kunkun Zhang ◽  
Wei Jiang

Polyvinyl alcohol (PVA) is a kind of water-soluble polymer, which has been widely used in different industries due to its excellent mechanical and chemical properties. In this paper, the effects of polyvinyl alcohol with different hydrolysis and polymerization degrees on the rheological properties of cement mortar are studied. The results show that the rheological properties of PVA-modified cement mortar can be described by the modified Bingham model. The yield stress of modified cement mortar is less than that of unmodified mortar when the degree of polymerization and the content of PVA are small. With the increase of polyvinyl alcohol content and polymerization degree, the yield stress and plastic viscosity of modified cement mortar increase sharply, which are larger than those of the unmodified cement mortar. However, the effect of hydrolysis degree of PVA on yield stress and plastic viscosity of modified cement mortar is not obvious.


2017 ◽  
Vol 144 ◽  
pp. 65-73 ◽  
Author(s):  
Rui Wang ◽  
Xiaojian Gao ◽  
Huanghuang Huang ◽  
Guangshuai Han

2014 ◽  
Vol 651-653 ◽  
pp. 165-168
Author(s):  
Da Wei Huang ◽  
Ren Juan Sun ◽  
Shan Shan Wei ◽  
Yi Zhang Hu ◽  
Yuan Yuan Wang ◽  
...  

Adding different kinds of additives will change rheological properties of cement slurry, same to the concrete. The relationship between fluid shear stress (Γ) and the shear rate (Ds) called rheological properties. In this paper we studied the influence of different additives (Olyacryamide, polycarboxylate superplasticizer , nanoCaCO3) on the slurry rheological properties and the effects of polyacrylamide on cement mortar liquidity.


Physics ◽  
1933 ◽  
Vol 4 (3) ◽  
pp. 88-96 ◽  
Author(s):  
Eugene C. Bingham ◽  
Markus Reiner

2007 ◽  
Vol 177 (4S) ◽  
pp. 612-612
Author(s):  
Motoo Araki ◽  
Po N. Lam ◽  
Daniel J. Culkin ◽  
Pamela E. Fox ◽  
Glenn M. Sulley ◽  
...  

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