Effect Of Water-Cement Ratio On Performance Of Seaweed-Modified Mortars

2019 ◽  
Author(s):  
Nurul Islam Siddique
Keyword(s):  
Cement Ratio ◽  
Water Cement Ratio ◽  
Effect Of Water

Effect of Water Reducer and Cellulose Ether on Sulphoaluminate Cement-Based Lightweight Thermal Insulation Board

2014 ◽  
Vol 541-542 ◽  
pp. 273-276
Author(s):  
Xiao Nan Dong ◽  
Xi Chen ◽  
Ling Chao Lu ◽  
Shuai Yang
Keyword(s):  
Mechanical Strength ◽  
Thermal Insulation ◽  
Influential Factor ◽  
Cellulose Ether ◽  
Dry Density ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Sulphoaluminate Cement ◽  
Effect Of Water ◽  
Good Workability

The effects of two admixtures content i.e. water reducer, cellulose ether and water-cement ratio on mechanical strength and dry density of cement-based lightweight thermal insulation board are studied. The result indicates that the water-cement ratio is the important influential factor, which is easier to get good workability. And based on the mechanical strength and dry density, the best range of water reducer content and cellulose ether content are 0.3%-0.6% and 0.4%-0.6% respectively.

scholarly journals Effect of Water-Cement Ratio on the Properties of NaOH-Treated Rubberized Mortar

2020 ◽  
Vol 862 ◽  
pp. 135-139
Author(s):  
Dhabit Zahin Alias Tudin ◽  
Ahmad Nurfaidhi Rizalman
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Crumb Rubber ◽  
Fine Aggregate ◽  
Volume Percentage ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Effect Of Water ◽  
Hardened Properties ◽  
Rubberized Mortar

In this study, crumb rubber was used to partially replaced fine aggregate in mortar mixture by 5, 10, 15 and 20 volume percentage (vol%) with untreated and NaOH-treated crumb rubber. There were three (3) different water-cement ratio used which are 0.45, 0.50 and 0.55. Thus, the total number of mixtures was 27. The mortars were tested for flowability, compressive strength, flexural strength and density. Based on the results, higher water cement ratio and percentage of crumb rubber replacement increased the flowability but lowered the density, compressive strength and flexural strength of the rubberized mortar. It was also discovered that the significant effect of water-cement ratio on the fresh and hardened properties of the rubberized mortar was due to the water content in the mixture. Meanwhile, the use of NaOH as treatment to crumb rubber improved the flowability, compressive strength and flexural strength of the rubberized mortar.

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