水-稳-碎-石-基层技术交底（Water - stability - fragmentation - stone - Grassroots technical disclosure）.docVIP

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水-稳-碎-石-基层技术交底（Water - stability - fragmentation - stone - Grassroots technical disclosure）.doc

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水-稳-碎-石-基层技术交底（Water - stability - fragmentation - stone - Grassroots technical disclosure）

水-稳-碎-石-基层技术交底（Water - stability - fragmentation - stone - Grassroots technical disclosure） QQQQQQ introduction: cement stabilized macadam is generally applicable to the grass-roots or subbase, the thickness is generally in the 15 ~ 22cm, in order to ensure its quality, standardize the construction process, specially formulated the cement macadam construction technical disclosure. The technical disclosure is only for JTJ034-2000 technical specifications for construction of highway pavement, drawings, tender technical specifications, the annex to the contract in cement stabilized soil chapter supplement, all units should be implemented. Key words: Cement Macadam Base technical disclosure Cement stabilized macadam is generally applicable to the grass-roots or subbase, the thickness is generally in the 15 ~ 22cm, in order to ensure its quality, standardize the construction process, specially formulated the cement macadam construction technical disclosure. The technical disclosure is only for JTJ034-2000 technical specifications for construction of highway pavement, drawings, tender technical specifications, the annex to the contract in cement stabilized soil chapter supplement, all units should be implemented. 1 materials 1.1 road cement, gravel, sand and other materials must be approved by the supervision engineer. Unauthorized entry is not allowed, nor is it permitted to use. 1.2 cement: choose final setting time is longer (should be in more than 6 hours), and should use 325# slag and ordinary Portland cement. Quick hardening cement, early strength cement and damp cement are strictly prohibited. The cement brand should consider its quality stability, production quantity, distance and other factors. The cement shall be certified before each approach, and shall be checked every 200T for the setting time and mark of the cement. 1.3 crushed stone: requirements of its crushing value of not more than 30%, the maximum particle size is not greater than 30mm., gravel particle