L-8 "Grout :
Grouts specified shall be of two types:
1. Types G1 : A sand-cement grout prepared from basic material on site. Cement shall be Portland Cement in accordance with BS12. Sand shall meet all the requirements for fine aggregate as specified in BS882.
2. Type G2 : A factory prepared, proprietary, non-shrink, non-metallic grout which shall be installed in accordance with the manufacturer’s recommendations.
3. Compressive strength of the grout at 7 days shall be not less than 25 N/mm2."