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The addition of such isolated protein, instead of the bacteria, into mortar also improves the strength of mortar.
Mortar properties can be adjusted by varying ingredients and their proportions, to meet the differing technical requirements
The hydrated lime is important to improve the mortar workability.
Meanwhile 70% and 100% replacement can be adopted for economical environmental mortar to suit lower strength mortar construction at 12.5 MPa and 7.7 MPa respectively.
It was found that optimum cement: Sand ratio of structural mortar is 1:2.25.
Results show that coral waste mortar presents obviously lower compressive strength and chloride resistance than conventional river sand mortar.
The type of substrate and its molarity have a significant influence on the strength of cement mortar.
The chloride binding capacity tends to decline with the increasing free chloride content in mortar, especially when free chloride content being larger than 0.1% by weight of mortar.
The results indicate that the mortar fractionates during different stages ranging from the early fresh mortar until the final hardened mortar stage.
Flow table results indicate that mortar workability is improved.