Hoʻokō nā hui mortar e loaʻa ana he 10-15% cenospheres i ke kaulike kūpono ma ke ʻano o ka hana, ka nui, ka omo ʻana o ka wai, ka ikaika compressive, ka ikaika flexural, ke kū'ē ʻana i ke ahi, ke kū'ē ʻana i ka waikawa, a me ka maloʻo ʻana o ka shrinkage.