混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2014年
10期
16-20
,共5页
机制砂%混凝土%工作性能%减水剂
機製砂%混凝土%工作性能%減水劑
궤제사%혼응토%공작성능%감수제
Manufactured sand%Concrete%Workability%Water reducing agent
研究了机制砂对新拌混凝土坍落度、扩展度、含气量以及抗压强度的影响，并探讨了聚羧酸高效减水剂和萘系减水剂在机制砂混凝土中的适用性。结果表明，机制砂的掺入会对混凝土的和易性产生一定影响，新拌混凝土的流动性变差，最多下降了25%。机制砂能够显著改善低强度混凝土的抗压强度。对于机制砂混凝土，萘系减水剂具有更好的适用性，相同配比下能够获得更好的和易性以及更高的抗压强度。
研究瞭機製砂對新拌混凝土坍落度、擴展度、含氣量以及抗壓彊度的影響，併探討瞭聚羧痠高效減水劑和萘繫減水劑在機製砂混凝土中的適用性。結果錶明，機製砂的摻入會對混凝土的和易性產生一定影響，新拌混凝土的流動性變差，最多下降瞭25%。機製砂能夠顯著改善低彊度混凝土的抗壓彊度。對于機製砂混凝土，萘繫減水劑具有更好的適用性，相同配比下能夠穫得更好的和易性以及更高的抗壓彊度。
연구료궤제사대신반혼응토담락도、확전도、함기량이급항압강도적영향，병탐토료취최산고효감수제화내계감수제재궤제사혼응토중적괄용성。결과표명，궤제사적참입회대혼응토적화역성산생일정영향，신반혼응토적류동성변차，최다하강료25%。궤제사능구현저개선저강도혼응토적항압강도。대우궤제사혼응토，내계감수제구유경호적괄용성，상동배비하능구획득경호적화역성이급경고적항압강도。
The effect of manufactured sand on the performance of fresh concrete is studied, which contains slump, slump flow, gas content and compressive strength. The study on applicability of polycarboxylate and naphthalene super-plasticizer in the concrete which mixed with manufactured sand is also carried out. The result show that the workability of the concrete would be affected when mixed with manufactured sand, the mobility of the fresh concrete would decrease with the maximum rate of 25%;the compressive strength of low-strength concrete would improve significantly with the mixture of manufactured sand. Finally, with the same proportion, when mixed with naphthalene superplasticizer, the concrete mixed with manufactured sand would get a better workability and higher compressive strength, which indicates a better applicability of naphthalene superplasticizer .
