研究了集料-基体两相协调性对混凝土强度的影响.试验研究了碎石、钢、砂浆、陶粒和加气混凝土5种强度差异较大的集料在3种不同强度等级基体下的混凝土抗压强度及其发展规律.研究结果表明粗集料和砂浆基体对混凝土抗压强度影响十分显著.在基体强度一定时,粗集料强度达到一定程度后再增加对提高混凝土强度作用不大;当集料强度比基体强度低时,单纯通过增大基体强度来提高混凝土强度效果不明显;集料与基体的差异对强度发展规律和混凝土绝对强度有很大影响.只有在两者相互协调的基础上,才能充分发挥集料和基体的作用.
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