1. Survey of Scottish sands and their characteristics which affect mortar strength;Drew;Chem Ind,1981
2. Lime–cement mortars compared to the commonly used cement mortars in Belgium;Balen,1990
3. I.S. 2116-80 (reaffirmed 1998). Indian standard specification for sand for masonry mortars. New Delhi, India: Bureau of Indian Standards; 1998.
4. ASTM C 144-04. Standard specification for aggregate for masonry mortar. USA: American Society for Testing and Materials; 2004.
5. BS: 4551. British standard methods of testing mortars, screeds and plasters. UK: British Standards Institution; 1980.