??????×??êD??D′?μ????ì￡?D???′?μ??¨éè￡??ìé′óá?μ??¨?tà???￡???í¨μ?ì?¨ê????é?úò??-?ú×??á?êD??¨?tà???μ?Dè?ó￡??????Y°???¤?ù?Y?à?êéúú?-?é￡??°?áo?êD?Dè?ó×?D??D??μ??éò??ˉμ?′óDí?¨?tà???·??é?úéè±?￡??ú×?á?êD????¨?tà???′|àíá?μ?Dè?ó￡????¨?tà???·??é?úê?ò???′óDíμ?ò??ˉê????é·?é?éè±?￡??úéíò?ì??ˉì?è??￡?×éo?′???o?àí￡??ü?óDD§?ú???μ??°????μ?êó????y?￡′óDíμ??¨?tà???·??é?úê?ר???????¨?tà???·?é￠?￠?áóμèì?μ????D·￠￡??ü??ì?ù??D§?a??é￠??μ??¨?tà???μ?·??é′|àí?￡?????Y°???¤ê?ú?ú????í???¨?tà???·??é?úéè±?μ??óòμ?￡?¨?tà???·??é?ú?a?aò??ˉ???é??￡?°′???y?ˉ·?ê?·??a??ì￥ê?ò??ˉ???é??oí??′?ê?ò??ˉ???é???￡áííaò??ˉ???é????óDáé??μ?????·?°?￡??éò??ù?Y?í?§μ?Dèòa￡??ú?úéí?????í?μ????é?ú￡?è?ò|ê????é?ú?￠?×????é?úoí·′?÷ê????é?úμè?￡???òò??ˉ???é??μ?′|àíá?òê?·?￡′ó￡?êêo?′óDíμ?μ??¨?tà???′|àí§êó??￡????ò??ˉ???é??ê?×??ü???êD?D??eμ?′óDí?¨?tà???·??é?ú￡????°ò?óD?êD?aê?òyè?′óDí·??é?ú???êD?¨?tà?????DD·??é?￡?-y·??éoóμ??¨?tà???ó|ó?ò???a?·o￡?è??éò?ó?à′é????ùéú×??￠??D?×??￠??°??￠?ó???ì?yíáμè?á?￡????òò?ü??±?óó?óúμà?·μ?ì???á?μè?￡。目前，我國大多數的城市面臨這建筑垃圾堆積成山的現狀，堆積如山的建筑垃圾影響到我們的生活和環境。JTGF。-(公路水泥混凝土路面施工技術規范》首次明確了路面混凝土可采用機制砂，并規定高速公路混凝土路面用機制砂單粒級顆粒大壓碎值應小于％～%(質量分數)，石粉含量應小于%～%(質量分數)，并且砂中硅質含量應不低于%(質量分數)．有關機制砂混凝土的路用性能，特別是針對機制砂混凝土耐磨性影響的研究未見報道，這制約了機